Add a limit on the number of SPARK, LFLARE and FLARE effects drawn in one frame.

ICE contains arbitrary elements in ctype as well and should track this in saves
Fix "missing custom elements" warnings when loading saves with RSST/RSSS; mark SNOW as carrying ctype as well
2024-04-22 22:49:00 +07:00 · 2024-04-21 00:11:55 -04:00 · 2024-04-19 23:31:20 -04:00 · 2024-04-14 20:36:05 +02:00 · 2024-04-14 20:34:34 +02:00 · 2024-04-13 22:32:43 +02:00
79 changed files with 414 additions and 392 deletions
--- a/.github/build.sh
+++ b/.github/build.sh
@ -199,7 +199,7 @@ meson_configure+=$'\t'-Dapp_exe=$APP_EXE
 meson_configure+=$'\t'-Dapp_id=$APP_ID
 meson_configure+=$'\t'-Dapp_data=$APP_DATA
 meson_configure+=$'\t'-Dapp_vendor=$APP_VENDOR
-meson_configure+=$'\t'-Db_strip=false
+meson_configure+=$'\t'-Dstrip=false
 meson_configure+=$'\t'-Db_staticpic=false
 meson_configure+=$'\t'-Dmod_id=$MOD_ID
 case $BSH_HOST_ARCH-$BSH_HOST_PLATFORM-$BSH_HOST_LIBC-$BSH_DEBUG_RELEASE in
@ -290,6 +290,10 @@ if [[ $RELEASE_TYPE == snapshot ]] && [[ $MOD_ID != 0 ]]; then
 fi
 if [[ $RELEASE_TYPE == snapshot ]] || [[ $MOD_ID != 0 ]]; then
 	meson_configure+=$'\t'-Dupdate_server=starcatcher.us/TPT
+	if [[ $BSH_HOST_PLATFORM == emscripten ]]; then
+		meson_configure+=$'\t'-Dserver=tptserv.starcatcher.us
+		meson_configure+=$'\t'-Dstatic_server=tptserv.starcatcher.us/Static
+	fi
 fi
 if [[ $RELEASE_TYPE != dev ]]; then
 	meson_configure+=$'\t'-Dignore_updates=false
--- a/.github/prepare.py
+++ b/.github/prepare.py
@ -114,7 +114,7 @@ for        arch,     platform,         libc,   statdyn, bplatform,         runso
 	(  'x86_64',    'windows',       'msvc',  'static', 'windows', 'windows-2019', '.exe',   False,    False,      None,         None,                    None,   'debug',        0 ), # priority = 0: static debug build
 	(  'x86_64',    'windows',       'msvc',  'static', 'windows', 'windows-2019', '.exe',    True,     True,    '.pdb',         None,'x86_64-win-msvc-static', 'release',       10 ),
 	(  'x86_64',    'windows',       'msvc', 'dynamic', 'windows', 'windows-2019', '.exe',   False,    False,      None,         None,                    None,   'debug',       10 ),
-	(  'x86_64',    'windows',       'msvc', 'dynamic', 'windows', 'windows-2019', '.exe',   False,    False,      None,  'backendvs',                    None,   'debug',        0 ), # priority = 0: backend=vs build
+	# (  'x86_64',    'windows',       'msvc', 'dynamic', 'windows', 'windows-2019', '.exe',   False,    False,      None,  'backendvs',                    None,   'debug',        0 ), # priority = 0: backend=vs build
 	(  'x86_64',    'windows',       'msvc', 'dynamic', 'windows', 'windows-2019', '.exe',   False,    False,      None,         None,                    None, 'release',       10 ),
 	(     'x86',    'windows',       'msvc',  'static', 'windows', 'windows-2019', '.exe',   False,    False,      None,         None,                    None,   'debug',        0 ), # priority = 0: static debug build
 	(     'x86',    'windows',       'msvc',  'static', 'windows', 'windows-2019', '.exe',    True,     True,    '.pdb',         None,  'i686-win-msvc-static', 'release',       10 ),
--- a/.github/starcatcher-publish.sh
+++ b/.github/starcatcher-publish.sh
@ -13,6 +13,8 @@ chmod 660 ~/.netrc
 mountpoint=ftpmnt
 mkdir $mountpoint
 curlftpfs "$PUBLISH_HOSTPORT" $mountpoint -o ssl,ciphers='ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES128-GCM-SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256:TLS_AES_128_CCM_8_SHA256:TLS_AES_128_CCM_SHA256'
-cp $PUBLISH_FILENAME $mountpoint/${PUBLISH_DIRECTORY:-.}/
+if [[ -z ${PUBLISH_ACCESSCHECK-} ]]; then
+	cp $PUBLISH_FILENAME $mountpoint/${PUBLISH_DIRECTORY:-.}/
+fi
 fusermount -u $mountpoint
 rmdir $mountpoint
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@ -41,6 +41,13 @@ jobs:
        env:
          PUBLISH_HOSTPORT: ${{ secrets.STARCATCHER_PUBLISH_HOSTPORT }}
          GITHUB_REF: ${{ github.ref }}
+      - if: steps.prepare.outputs.do_publish == 'yes'
+        run: sudo apt update && sudo apt install curlftpfs && bash -c './.github/starcatcher-publish.sh'
+        env:
+          PUBLISH_HOSTPORT: ${{ secrets.STARCATCHER_PUBLISH_HOSTPORT }}
+          PUBLISH_USERNAME: ${{ secrets.STARCATCHER_PUBLISH_USERNAME }}
+          PUBLISH_PASSWORD: ${{ secrets.STARCATCHER_PUBLISH_PASSWORD }}
+          PUBLISH_ACCESSCHECK: yes
      - if: steps.prepare.outputs.do_release == 'yes'
        id: create_release
        env:
--- a/README.md
+++ b/README.md
@ -1,4 +1,4 @@
-The Powder Toy - January 2023
+The Powder Toy - April 2024
 ==========================

 Get the latest version [from the Powder Toy website](https://powdertoy.co.uk/Download.html).
@ -108,6 +108,7 @@ Controls
 | Shift + R               | Horizontal mirror for selected area when pasting stamps         |
 | Ctrl + Shift + R        | Vertical mirror for selected area when pasting stamps           |
 | R                       | Rotate selected area counterclockwise when pasting stamps       |
+| F11                     | Toggle fullscreen                                               |

 Command Line
 ---------------------------------------------------------------------------
--- a/meson.build
+++ b/meson.build
@ -376,6 +376,22 @@ if host_platform == 'emscripten'
 		'-o', app_exe + '.js', # so we get a .wasm, and a .js
 	]
 endif
+if get_option('export_lua_symbols')
+	if is_static and lua_variant != 'none' and not project_export_dynamic
+		if host_platform == 'windows'
+			error('Lua symbols are currently impossible to export correctly on Windows')
+		elif c_compiler.has_link_argument('-Wl,--export-dynamic-symbol')
+			project_link_args += [
+				'-Wl,--export-dynamic-symbol=lua_*',
+				'-Wl,--export-dynamic-symbol=luaL_*',
+				'-Wl,--export-dynamic-symbol=luaopen_*',
+			]
+		else
+			warning('your linker does not support -Wl,--export-dynamic-symbol so Meson will be instructed to export all symbols in order to enable loading Lua shared modules, which may blow up the size of the resulting binary')
+			project_export_dynamic = true
+		endif
+	endif
+endif

 if get_option('build_powder')
 	powder_deps += project_deps + [
--- a/meson_options.txt
+++ b/meson_options.txt
@ -40,42 +40,42 @@ option(
 	'display_version_major',
 	type: 'integer',
 	min: 0,
-	value: 97,
+	value: 98,
 	description: 'Major component of the display version, should more or less map to the MINOR version in semantic versioning'
 )
 option(
 	'display_version_minor',
 	type: 'integer',
 	min: 0,
-	value: 0,
+	value: 2,
 	description: 'Minor component of the display version, should more or less map to the PATCH version in semantic versioning'
 )
 option(
 	'build_num',
 	type: 'integer',
 	min: 0,
-	value: 360,
+	value: 365,
 	description: 'Build number, should be strictly monotonously increasing across public releases'
 )
 option(
 	'upstream_version_major',
 	type: 'integer',
 	min: 0,
-	value: 97,
+	value: 98,
 	description: 'Major component of the upstream display version, mod owners should not change this but merge upstream changes to it'
 )
 option(
 	'upstream_version_minor',
 	type: 'integer',
 	min: 0,
-	value: 0,
+	value: 2,
 	description: 'Minor component of the upstream display version, mod owners should not change this but merge upstream changes to it'
 )
 option(
 	'upstream_build_num',
 	type: 'integer',
 	min: 0,
-	value: 360,
+	value: 365,
 	description: 'Upstream build number, mod owners should not change this but merge upstream changes to it'
 )
 option(
@ -305,3 +305,9 @@ option(
 	value: true,
 	description: 'Ask Windows nicely for UTF-8 as the codepage'
 )
+option(
+	'export_lua_symbols',
+	type: 'boolean',
+	value: false,
+	description: 'Export Lua symbols to enable loading of Lua shared modules'
+)
--- a/src/PowderToy.cpp
+++ b/src/PowderToy.cpp
@ -445,19 +445,20 @@ int Main(int argc, char *argv[])
 	engine.Begin();
 	engine.SetFastQuit(prefs.Get("FastQuit", true));
 	engine.TouchUI = prefs.Get("TouchUI", DEFAULT_TOUCH_UI);
+	engine.windowFrameOps = windowFrameOps;
+
+	SDLOpen();
+
 	if (Client::Ref().IsFirstRun() && FORCE_WINDOW_FRAME_OPS == forceWindowFrameOpsNone)
 	{
 		auto guessed = GuessBestScale();
-		if (windowFrameOps.scale != guessed)
+		if (engine.windowFrameOps.scale != guessed)
 		{
-			windowFrameOps.scale = guessed;
+			engine.windowFrameOps.scale = guessed;
 			prefs.Set("Scale", windowFrameOps.scale);
 			showLargeScreenDialog = true;
 		}
 	}
-	engine.windowFrameOps = windowFrameOps;
-
-	SDLOpen();

 	bool enableBluescreen = USE_BLUESCREEN && !true_arg(arguments["disable-bluescreen"]);
 	if (enableBluescreen)
--- a/src/PowderToyRenderer.cpp
+++ b/src/PowderToyRenderer.cpp
@ -22,6 +22,8 @@ int main(int argc, char *argv[])
 	auto inputFilename = ByteString(argv[1]);
 	auto outputFilename = ByteString(argv[2]) + ".png";

+	auto simulationData = std::make_unique<SimulationData>();
+
 	std::vector<char> fileData;
 	if (!Platform::ReadFile(fileData, inputFilename))
 	{
@ -40,7 +42,6 @@ int main(int argc, char *argv[])
 			throw e;
 	}

-	auto simulationData = std::make_unique<SimulationData>();
 	Simulation * sim = new Simulation();
 	Renderer * ren = new Renderer(sim);

@ -63,6 +64,7 @@ int main(int argc, char *argv[])
 	}
 	else
 	{
+		ren->clearScreen();
 		int w = Graphics::TextSize("Save file invalid").X + 15, x = (XRES-w)/2, y = (YRES-24)/2;
 		ren->DrawRect(RectSized(Vec2{ x, y }, Vec2{ w, 24 }), 0xC0C0C0_rgb);
 		ren->BlendText({ x+8, y+8 }, "Save file invalid", 0xC0C0F0_rgb .WithAlpha(255));
--- a/src/client/Client.cpp
+++ b/src/client/Client.cpp
@ -3,7 +3,6 @@
 #include "client/http/StartupRequest.h"
 #include "ClientListener.h"
 #include "Format.h"
-#include "MD5.h"
 #include "client/GameSave.h"
 #include "client/SaveFile.h"
 #include "client/SaveInfo.h"
@ -118,7 +117,7 @@ void Client::Tick()
 	{
 		if (versionCheckRequest->StatusCode() == 618)
 		{
-			AddServerNotification({ "Failed to load SSL certificates", ByteString(SCHEME) + "powdertoy.co.uk/FAQ.html" });
+			AddServerNotification({ "Failed to load SSL certificates", ByteString::Build(SCHEME, SERVER, "/FAQ.html") });
 		}
 		try
 		{
@ -378,7 +377,6 @@ void Client::RescanStamps()
 			newStampIDs.push_back(stampID);
 		}
 	}
-	auto oldCount = newStampIDs.size();
 	auto stampIDsSet = std::set<ByteString>(stampIDs.begin(), stampIDs.end());
 	for (auto &stampID : stampFilesSet)
 	{
@ -390,8 +388,6 @@ void Client::RescanStamps()
 	}
 	if (changed)
 	{
-		// Move newly discovered stamps to front.
-		std::rotate(newStampIDs.begin(), newStampIDs.begin() + oldCount, newStampIDs.end());
 		stampIDs = newStampIDs;
 		WriteStamps();
 	}
--- a/src/client/GameSave.cpp
+++ b/src/client/GameSave.cpp
@ -51,9 +51,18 @@ GameSave::GameSave(const std::vector<char> &data, bool newWantAuthors)
 void GameSave::MapPalette()
 {
 	int partMap[PT_NUM];
+	bool ignoreMissingErrors[PT_NUM];
 	for(int i = 0; i < PT_NUM; i++)
 	{
 		partMap[i] = i;
+		ignoreMissingErrors[i] = false;
+	}
+	if (version <= Version(98, 2))
+	{
+		ignoreMissingErrors[PT_ICEI] = true;
+		ignoreMissingErrors[PT_SNOW] = true;
+		ignoreMissingErrors[PT_RSST] = true;
+		ignoreMissingErrors[PT_RSSS] = true;
 	}

 	auto &sd = SimulationData::CRef();
@ -90,12 +99,14 @@ void GameSave::MapPalette()
 			}
 		}
 	}
-	auto paletteLookup = [this, &partMap](int type) {
+	auto paletteLookup = [this, &partMap](int type, bool ignoreMissingErrors) {
 		if (type > 0 && type < PT_NUM)
 		{
 			auto carriedType = partMap[type];
 			if (!carriedType) // type is not 0 so this shouldn't be 0 either
 			{
+				if (ignoreMissingErrors)
+					return type;
 				missingElements.ids.insert(type);
 			}
 			type = carriedType;
@ -113,7 +124,7 @@ void GameSave::MapPalette()
 		{
 			continue;
 		}
-		tempPart.type = paletteLookup(tempPart.type);
+		tempPart.type = paletteLookup(tempPart.type, false);
 		for (auto index : possiblyCarriesType)
 		{
 			if (elements[tempPart.type].CarriesTypeIn & (1U << index))
@ -121,7 +132,7 @@ void GameSave::MapPalette()
 				auto *prop = reinterpret_cast<int *>(reinterpret_cast<char *>(&tempPart) + properties[index].Offset);
 				auto carriedType = *prop & int(pmapmask);
 				auto extra = *prop >> pmapbits;
-				carriedType = paletteLookup(carriedType);
+				carriedType = paletteLookup(carriedType, ignoreMissingErrors[tempPart.type]);
 				*prop = PMAP(extra, carriedType);
 			}
 		}
@ -2336,6 +2347,14 @@ std::pair<bool, std::vector<char>> GameSave::serialiseOPS() const
 			{
 				RESTRICTVERSION(97, 0);
 			}
+			if (particles[i].type == PT_RSST || particles[i].type == PT_RSSS)
+			{
+				RESTRICTVERSION(98, 0);
+			}
+			if (particles[i].type == PT_ETRD && (particles[i].tmp || particles[i].tmp2))
+			{
+				RESTRICTVERSION(98, 0);
+			}

 			//Get the pmap entry for the next particle in the same position
 			i = partsPosLink[i];
--- a/src/client/MD5.cpp
+++ b/src/client/MD5.cpp
@ -1,231 +0,0 @@
-// based on public-domain code from Colin Plumb (1993)
-#include "MD5.h"
-#include <cstring>
-
-static unsigned getu32(const unsigned char *addr)
-{
-	return (((((unsigned long)addr[3] << 8) | addr[2]) << 8) | addr[1]) << 8 | addr[0];
-}
-
-static void putu32(unsigned data, unsigned char *addr)
-{
-	addr[0] = (unsigned char)data;
-	addr[1] = (unsigned char)(data >> 8);
-	addr[2] = (unsigned char)(data >> 16);
-	addr[3] = (unsigned char)(data >> 24);
-}
-
-void md5_init(struct md5_context *ctx)
-{
-	ctx->buf[0] = 0x67452301;
-	ctx->buf[1] = 0xefcdab89;
-	ctx->buf[2] = 0x98badcfe;
-	ctx->buf[3] = 0x10325476;
-
-	ctx->bits[0] = 0;
-	ctx->bits[1] = 0;
-}
-
-void md5_update(struct md5_context *ctx, unsigned char const *buf, unsigned len)
-{
-	unsigned t;
-
-	// update bit count
-	t = ctx->bits[0];
-	if ((ctx->bits[0] = (t + ((unsigned)len << 3)) & 0xffffffff) < t)
-		ctx->bits[1]++; // carry
-	ctx->bits[1] += len >> 29;
-
-	t = (t >> 3) & 0x3f;
-
-	// use leading data to top up the buffer
-
-	if (t)
-	{
-		unsigned char *p = ctx->in + t;
-
-		t = 64-t;
-		if (len < t)
-		{
-			memcpy(p, buf, len);
-			return;
-		}
-		memcpy(p, buf, t);
-		md5_transform(ctx->buf, ctx->in);
-		buf += t;
-		len -= t;
-	}
-
-	// following 64-byte chunks
-
-	while (len >= 64)
-	{
-		memcpy(ctx->in, buf, 64);
-		md5_transform(ctx->buf, ctx->in);
-		buf += 64;
-		len -= 64;
-	}
-
-	// save rest of bytes for later
-
-	memcpy(ctx->in, buf, len);
-}
-
-void md5_final(unsigned char digest[16], struct md5_context *ctx)
-{
-	unsigned count;
-	unsigned char *p;
-
-	// #bytes mod64
-	count = (ctx->bits[0] >> 3) & 0x3F;
-
-	// first char of padding = 0x80
-	p = ctx->in + count;
-	*p++ = 0x80;
-
-	// calculate # of bytes to pad
-	count = 64 - 1 - count;
-
-	// Pad out to 56 mod 64
-	if (count < 8)
-	{
-		// we need to finish a whole block before padding
-		memset(p, 0, count);
-		md5_transform(ctx->buf, ctx->in);
-		memset(ctx->in, 0, 56);
-	}
-	else
-	{
-		// just pad to 56 bytes
-		memset(p, 0, count-8);
-	}
-
-	// append length & final transform
-	putu32(ctx->bits[0], ctx->in + 56);
-	putu32(ctx->bits[1], ctx->in + 60);
-
-	md5_transform(ctx->buf, ctx->in);
-	putu32(ctx->buf[0], digest);
-	putu32(ctx->buf[1], digest + 4);
-	putu32(ctx->buf[2], digest + 8);
-	putu32(ctx->buf[3], digest + 12);
-	memset(&ctx, 0, sizeof(ctx));
-}
-
-#define F1(x, y, z) (z ^ (x & (y ^ z)))
-#define F2(x, y, z) F1(z, x, y)
-#define F3(x, y, z) (x ^ y ^ z)
-#define F4(x, y, z) (y ^ (x | ~z))
-
-#define MD5STEP(f, w, x, y, z, data, s) \
-	( w += f(x, y, z) + data, w &= 0xffffffff, w = w<<s | w>>(32-s), w += x )
-
-void md5_transform(unsigned buf[4], const unsigned char inraw[64])
-{
-	unsigned a, b, c, d;
-	unsigned in[16];
-	int i;
-
-	for (i = 0; i < 16; ++i)
-		in[i] = getu32 (inraw + 4 * i);
-
-	a = buf[0];
-	b = buf[1];
-	c = buf[2];
-	d = buf[3];
-
-	MD5STEP(F1, a, b, c, d, in[ 0]+0xd76aa478,  7);
-	MD5STEP(F1, d, a, b, c, in[ 1]+0xe8c7b756, 12);
-	MD5STEP(F1, c, d, a, b, in[ 2]+0x242070db, 17);
-	MD5STEP(F1, b, c, d, a, in[ 3]+0xc1bdceee, 22);
-	MD5STEP(F1, a, b, c, d, in[ 4]+0xf57c0faf,  7);
-	MD5STEP(F1, d, a, b, c, in[ 5]+0x4787c62a, 12);
-	MD5STEP(F1, c, d, a, b, in[ 6]+0xa8304613, 17);
-	MD5STEP(F1, b, c, d, a, in[ 7]+0xfd469501, 22);
-	MD5STEP(F1, a, b, c, d, in[ 8]+0x698098d8,  7);
-	MD5STEP(F1, d, a, b, c, in[ 9]+0x8b44f7af, 12);
-	MD5STEP(F1, c, d, a, b, in[10]+0xffff5bb1, 17);
-	MD5STEP(F1, b, c, d, a, in[11]+0x895cd7be, 22);
-	MD5STEP(F1, a, b, c, d, in[12]+0x6b901122,  7);
-	MD5STEP(F1, d, a, b, c, in[13]+0xfd987193, 12);
-	MD5STEP(F1, c, d, a, b, in[14]+0xa679438e, 17);
-	MD5STEP(F1, b, c, d, a, in[15]+0x49b40821, 22);
-
-	MD5STEP(F2, a, b, c, d, in[ 1]+0xf61e2562,  5);
-	MD5STEP(F2, d, a, b, c, in[ 6]+0xc040b340,  9);
-	MD5STEP(F2, c, d, a, b, in[11]+0x265e5a51, 14);
-	MD5STEP(F2, b, c, d, a, in[ 0]+0xe9b6c7aa, 20);
-	MD5STEP(F2, a, b, c, d, in[ 5]+0xd62f105d,  5);
-	MD5STEP(F2, d, a, b, c, in[10]+0x02441453,  9);
-	MD5STEP(F2, c, d, a, b, in[15]+0xd8a1e681, 14);
-	MD5STEP(F2, b, c, d, a, in[ 4]+0xe7d3fbc8, 20);
-	MD5STEP(F2, a, b, c, d, in[ 9]+0x21e1cde6,  5);
-	MD5STEP(F2, d, a, b, c, in[14]+0xc33707d6,  9);
-	MD5STEP(F2, c, d, a, b, in[ 3]+0xf4d50d87, 14);
-	MD5STEP(F2, b, c, d, a, in[ 8]+0x455a14ed, 20);
-	MD5STEP(F2, a, b, c, d, in[13]+0xa9e3e905,  5);
-	MD5STEP(F2, d, a, b, c, in[ 2]+0xfcefa3f8,  9);
-	MD5STEP(F2, c, d, a, b, in[ 7]+0x676f02d9, 14);
-	MD5STEP(F2, b, c, d, a, in[12]+0x8d2a4c8a, 20);
-
-	MD5STEP(F3, a, b, c, d, in[ 5]+0xfffa3942,  4);
-	MD5STEP(F3, d, a, b, c, in[ 8]+0x8771f681, 11);
-	MD5STEP(F3, c, d, a, b, in[11]+0x6d9d6122, 16);
-	MD5STEP(F3, b, c, d, a, in[14]+0xfde5380c, 23);
-	MD5STEP(F3, a, b, c, d, in[ 1]+0xa4beea44,  4);
-	MD5STEP(F3, d, a, b, c, in[ 4]+0x4bdecfa9, 11);
-	MD5STEP(F3, c, d, a, b, in[ 7]+0xf6bb4b60, 16);
-	MD5STEP(F3, b, c, d, a, in[10]+0xbebfbc70, 23);
-	MD5STEP(F3, a, b, c, d, in[13]+0x289b7ec6,  4);
-	MD5STEP(F3, d, a, b, c, in[ 0]+0xeaa127fa, 11);
-	MD5STEP(F3, c, d, a, b, in[ 3]+0xd4ef3085, 16);
-	MD5STEP(F3, b, c, d, a, in[ 6]+0x04881d05, 23);
-	MD5STEP(F3, a, b, c, d, in[ 9]+0xd9d4d039,  4);
-	MD5STEP(F3, d, a, b, c, in[12]+0xe6db99e5, 11);
-	MD5STEP(F3, c, d, a, b, in[15]+0x1fa27cf8, 16);
-	MD5STEP(F3, b, c, d, a, in[ 2]+0xc4ac5665, 23);
-
-	MD5STEP(F4, a, b, c, d, in[ 0]+0xf4292244,  6);
-	MD5STEP(F4, d, a, b, c, in[ 7]+0x432aff97, 10);
-	MD5STEP(F4, c, d, a, b, in[14]+0xab9423a7, 15);
-	MD5STEP(F4, b, c, d, a, in[ 5]+0xfc93a039, 21);
-	MD5STEP(F4, a, b, c, d, in[12]+0x655b59c3,  6);
-	MD5STEP(F4, d, a, b, c, in[ 3]+0x8f0ccc92, 10);
-	MD5STEP(F4, c, d, a, b, in[10]+0xffeff47d, 15);
-	MD5STEP(F4, b, c, d, a, in[ 1]+0x85845dd1, 21);
-	MD5STEP(F4, a, b, c, d, in[ 8]+0x6fa87e4f,  6);
-	MD5STEP(F4, d, a, b, c, in[15]+0xfe2ce6e0, 10);
-	MD5STEP(F4, c, d, a, b, in[ 6]+0xa3014314, 15);
-	MD5STEP(F4, b, c, d, a, in[13]+0x4e0811a1, 21);
-	MD5STEP(F4, a, b, c, d, in[ 4]+0xf7537e82,  6);
-	MD5STEP(F4, d, a, b, c, in[11]+0xbd3af235, 10);
-	MD5STEP(F4, c, d, a, b, in[ 2]+0x2ad7d2bb, 15);
-	MD5STEP(F4, b, c, d, a, in[ 9]+0xeb86d391, 21);
-
-	buf[0] += a;
-	buf[1] += b;
-	buf[2] += c;
-	buf[3] += d;
-}
-
-static char hexChars[] = "0123456789abcdef";
-void md5_ascii(char *result, unsigned char const *buf, unsigned len)
-{
-	struct md5_context md5;
-	unsigned char hash[16];
-	int i;
-
-	if (len==0)
-		len = strlen((char *)buf);
-
-	md5_init(&md5);
-	md5_update(&md5, buf, len);
-	md5_final(hash, &md5);
-
-	for (i=0; i<16; i++)
-	{
-		result[i*2] = hexChars[(hash[i]>>4)&0xF];
-		result[i*2+1] = hexChars[hash[i]&0x0F];
-	}
-	result[32] = 0;
-}
--- a/src/client/MD5.h
+++ b/src/client/MD5.h
@ -1,15 +0,0 @@
-#pragma once
-
-struct md5_context
-{
-	unsigned buf[4];
-	unsigned bits[2];
-	unsigned char in[64];
-};
-
-void md5_init(struct md5_context *context);
-void md5_update(struct md5_context *context, unsigned char const *buf, unsigned len);
-void md5_final(unsigned char digest[16], struct md5_context *context);
-void md5_transform(unsigned buf[4], const unsigned char in[64]);
-
-void md5_ascii(char *result, unsigned char const *buf, unsigned len);
--- a/src/client/Search.h
+++ b/src/client/Search.h
@ -14,4 +14,13 @@ namespace http
 		sortByVotes,
 		sortByDate,
 	};
+
+	enum Period
+	{
+		allSaves,
+		todaySaves,
+		weekSaves,
+		monthSaves,
+		yearSaves,
+	};
 }
--- a/src/client/http/SearchSavesRequest.cpp
+++ b/src/client/http/SearchSavesRequest.cpp
@ -1,3 +1,4 @@
+#include <ctime>
 #include "SearchSavesRequest.h"
 #include "Config.h"
 #include "client/Client.h"
@ -6,7 +7,7 @@

 namespace http
 {
-	static ByteString Url(int start, int count, ByteString query, Sort sort, Category category)
+	static ByteString Url(int start, int count, ByteString query, Period period, Sort sort, Category category)
 	{
 		ByteStringBuilder builder;
 		builder << SCHEME << SERVER << "/Browse.json?Start=" << start << "&Count=" << count;
@ -17,6 +18,38 @@ namespace http
 			}
 			query += str;
 		};
+
+		time_t currentTime = time(NULL);
+
+		if(period)
+		{
+			switch (period)
+			{
+				case todaySaves:
+					currentTime -= 60*60*24; // One day
+					break;
+				case weekSaves:
+					currentTime -= 60*60*24*7; // One week
+					break;
+				case monthSaves:
+					currentTime -= 60*60*24*31; // One month
+					break;
+				case yearSaves:
+					currentTime -= 60*60*24*365; // One year
+					break;
+				default:
+					break;
+			}
+
+			struct tm currentTimeData = *localtime(&currentTime);
+			ByteStringBuilder afterQuery;
+
+			afterQuery << "after:" << currentTimeData.tm_year+1900 << "-" <<
+			       	(currentTimeData.tm_mon < 9 ? "0" : "") << currentTimeData.tm_mon+1 << "-" <<
+			       	(currentTimeData.tm_mday < 10 ? "0" : "") << currentTimeData.tm_mday;
+			appendToQuery(afterQuery.Build());
+		}
+
 		switch (sort)
 		{
 		case sortByDate:
@ -48,7 +81,7 @@ namespace http
 		return builder.Build();
 	}

-	SearchSavesRequest::SearchSavesRequest(int start, int count, ByteString query, Sort sort, Category category) : APIRequest(Url(start, count, query, sort, category), authUse, false)
+	SearchSavesRequest::SearchSavesRequest(int start, int count, ByteString query, Period period, Sort sort, Category category) : APIRequest(Url(start, count, query, period, sort, category), authUse, false)
 	{
 	}

--- a/src/client/http/SearchSavesRequest.h
+++ b/src/client/http/SearchSavesRequest.h
@ -8,7 +8,7 @@ namespace http
 	class SearchSavesRequest : public APIRequest
 	{
 	public:
-		SearchSavesRequest(int start, int count, ByteString query, Sort sort, Category category);
+		SearchSavesRequest(int start, int count, ByteString query, Period period, Sort sort, Category category);

 		std::pair<int, std::vector<std::unique_ptr<SaveInfo>>> Finish();
 	};
--- a/src/client/http/StartupRequest.cpp
+++ b/src/client/http/StartupRequest.cpp
@ -52,6 +52,10 @@ namespace http
 						return;
 					}
 					auto &info = versions[key];
+					if (info.isNull())
+					{
+						return;
+					}
 					auto getOr = [&info](ByteString key, int defaultValue) -> int {
 						if (!info.isMember(key))
 						{
@ -59,7 +63,7 @@ namespace http
 						}
 						return info[key].asInt();
 					};
-					auto build = getOr(key == "Snapshot" ? "Snapshot" : "Build", -1);
+					auto build = getOr(key == "Snapshot" ? "Snapshot" : "Build", 0);
 					if (!updateAvailableFunc(build))
 					{
 						return;
@ -68,8 +72,8 @@ namespace http
 						channel,
 						ByteString::Build(SCHEME, alternate ? UPDATESERVER : SERVER, info["File"].asString()),
 						ByteString(info["Changelog"].asString()).FromUtf8(),
-						getOr("Major", -1),
-						getOr("Minor", -1),
+						getOr("Major", 0),
+						getOr("Minor", 0),
 						build,
 					};
 				};
--- a/src/client/meson.build
+++ b/src/client/meson.build
@ -1,5 +1,4 @@
 client_files = files(
-	'MD5.cpp',
 	'SaveFile.cpp',
 	'SaveInfo.cpp',
 	'ThumbnailRendererTask.cpp',
--- a/src/common/Vec2.h
+++ b/src/common/Vec2.h
@ -112,6 +112,14 @@ struct Vec2
 		);
 	}

+	Vec2<T> Min(Vec2<T> other) const
+	{
+		return Vec2<T>(
+			std::min(X, other.X),
+			std::min(Y, other.Y)
+		);
+	}
+
 	// Return a rectangle starting at origin, whose dimensions match this vector
 	template<typename S = T, typename = std::enable_if_t<std::is_integral_v<S>>>
 	constexpr inline Rect<T> OriginRect() const
--- a/src/common/platform/Common.cpp
+++ b/src/common/platform/Common.cpp
@ -58,7 +58,7 @@ bool ReadFile(std::vector<char> &fileData, ByteString filename)
 	if (f) f.seekg(0, std::ios::end);
 	if (f) fileData.resize(f.tellg());
 	if (f) f.seekg(0);
-	if (f) f.read(&fileData[0], fileData.size());
+	if (f && fileData.size()) f.read(&fileData[0], fileData.size());
 	if (!f)
 	{
 		std::cerr << "ReadFile: " << filename << ": " << strerror(errno) << std::endl;
--- a/src/graphics/Renderer.cpp
+++ b/src/graphics/Renderer.cpp
@ -183,6 +183,8 @@ void Renderer::render_parts()
 	gfctx.pipeSubcallTpart = nullptr;
 	int deca, decr, decg, decb, cola, colr, colg, colb, firea, firer, fireg, fireb, pixel_mode, q, i, t, nx, ny, x, y;
 	int orbd[4] = {0, 0, 0, 0}, orbl[4] = {0, 0, 0, 0};
+	int drawing_budget = 1000000; //Serves as an upper bound for costly effects such as SPARK, FLARE and LFLARE
+
 	if(!sim)
 		return;
 	auto *parts = sim->parts;
@ -633,7 +635,7 @@ void Renderer::render_parts()
 				{
 					auto flicker = float(gfctx.rng()%20);
 					auto gradv = 4*sim->parts[i].life + flicker;
-					for (x = 0; gradv>0.5; x++) {
+					for (x = 0; (gradv>0.5) && (drawing_budget > 0); x++) {
 						auto col = RGBA<uint8_t>(
 							std::min(0xFF, colr * int(gradv) / 255),
 							std::min(0xFF, colg * int(gradv) / 255),
@ -644,6 +646,7 @@ void Renderer::render_parts()
 						AddPixel({ nx, ny+x }, col);
 						AddPixel({ nx, ny-x }, col);
 						gradv = gradv/1.5f;
+						drawing_budget--;
 					}
 				}
 				if(pixel_mode & PMODE_FLARE)
@ -660,12 +663,13 @@ void Renderer::render_parts()
 					BlendPixel({ nx-1, ny-1 }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 					BlendPixel({ nx+1, ny+1 }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 					BlendPixel({ nx-1, ny+1 }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
-					for (x = 1; gradv>0.5; x++) {
+					for (x = 1; (gradv>0.5) && (drawing_budget > 0); x++) {
 						AddPixel({ nx+x, ny }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 						AddPixel({ nx-x, ny }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 						AddPixel({ nx, ny+x }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 						AddPixel({ nx, ny-x }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 						gradv = gradv/1.2f;
+						drawing_budget--;
 					}
 				}
 				if(pixel_mode & PMODE_LFLARE)
@ -682,12 +686,13 @@ void Renderer::render_parts()
 					BlendPixel({ nx-1, ny-1 }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 					BlendPixel({ nx+1, ny+1 }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 					BlendPixel({ nx-1, ny+1 }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
-					for (x = 1; gradv>0.5; x++) {
+					for (x = 1; (gradv>0.5) && (drawing_budget > 0); x++) {
 						AddPixel({ nx+x, ny }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 						AddPixel({ nx-x, ny }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 						AddPixel({ nx, ny+x }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 						AddPixel({ nx, ny-x }, RGBA<uint8_t>(colr, colg, colb, int(gradv)));
 						gradv = gradv/1.01f;
+						drawing_budget--;
 					}
 				}
 				if (pixel_mode & EFFECT_GRAVIN)
--- a/src/gui/elementsearch/ElementSearchActivity.cpp
+++ b/src/gui/elementsearch/ElementSearchActivity.cpp
@ -192,7 +192,11 @@ void ElementSearchActivity::searchTools(String query)
 		}
 	}

-	scrollPanel->InnerSize = ui::Point(scrollPanel->Size.X, current.Y + 1);
+	if (current.X == 0)
+	{
+		current.Y -= 19;
+	}
+	scrollPanel->InnerSize = ui::Point(scrollPanel->Size.X, current.Y + 20);
 }

 void ElementSearchActivity::SetActiveTool(int selectionState, Tool * tool)
--- a/src/gui/filebrowser/FileBrowserActivity.cpp
+++ b/src/gui/filebrowser/FileBrowserActivity.cpp
@ -39,7 +39,7 @@ class LoadFilesTask: public Task
 	bool doWork() override
 	{
 		std::vector<ByteString> files = Platform::DirectorySearch(directory, search, { ".cps" });
-		std::sort(files.rbegin(), files.rend(), [](ByteString a, ByteString b) { return a.ToLower() < b.ToLower(); });
+		std::sort(files.rbegin(), files.rend(), [](ByteString a, ByteString b) { return a.ToLower() > b.ToLower(); });

 		notifyProgress(-1);
 		for(std::vector<ByteString>::iterator iter = files.begin(), end = files.end(); iter != end; ++iter)
--- a/src/gui/game/GameController.cpp
+++ b/src/gui/game/GameController.cpp
@ -552,7 +552,7 @@ bool GameController::MouseUp(int x, int y, unsigned button, MouseupReason reason
 						}
 						break;
 					case sign::Type::Thread:
-						Platform::OpenURI(ByteString::Build(SCHEME, "powdertoy.co.uk/Discussions/Thread/View.html?Thread=", str.Substr(3, si.first - 3).ToUtf8()));
+						Platform::OpenURI(ByteString::Build(SCHEME, SERVER, "/Discussions/Thread/View.html?Thread=", str.Substr(3, si.first - 3).ToUtf8()));
 						break;
 					case sign::Type::Search:
 						OpenSearch(str.Substr(3, si.first - 3));
@ -1111,8 +1111,11 @@ void GameController::SetActiveTool(int toolSelection, Tool * tool)
 	gameModel->SetLastTool(tool);
 	for(int i = 0; i < 3; i++)
 	{
-		if(gameModel->GetActiveTool(i) == gameModel->GetMenuList().at(SC_WALL)->GetToolList().at(WL_GRAV))
+		auto *activeTool = gameModel->GetActiveTool(i);
+		if (activeTool && activeTool->Identifier == "DEFAULT_WL_GRVTY")
+		{
 			gameModel->GetRenderer()->gravityZonesEnabled = true;
+		}
 	}
 	if (tool->Identifier == "DEFAULT_UI_PROPERTY")
 	{
--- a/src/gui/game/IntroText.h
+++ b/src/gui/game/IntroText.h
@ -76,7 +76,7 @@ inline ByteString IntroText()
 	}
 	else
 	{
-		sb << "\bgTo use online features such as saving, you need to register at: \brhttps://powdertoy.co.uk/Register.html\n";
+		sb << "\bgTo use online features such as saving, you need to register at: \brhttps://" << SERVER << "/Register.html\n";
 	}
 	sb << "\n\bt" << VersionInfo();
 	return sb.Build();
--- a/src/gui/interface/DropDown.cpp
+++ b/src/gui/interface/DropDown.cpp
@ -15,7 +15,8 @@ class DropDownWindow : public ui::Window

 public:
 	DropDownWindow(DropDown * dropDown):
-		Window(dropDown->GetScreenPos() + ui::Point(-1, -1 - dropDown->optionIndex * 16), ui::Point(dropDown->Size.X+2, 2+dropDown->options.size()*16)),
+		Window(dropDown->GetScreenPos() + ui::Point(-1, -1 - (dropDown->optionIndex*16 < dropDown->GetScreenPos().Y ? dropDown->optionIndex*16 : 0)),
+						  ui::Point(dropDown->Size.X+2, 2+dropDown->options.size()*16)),
 		dropDown(dropDown),
 		appearance(dropDown->Appearance)
 	{
--- a/src/gui/interface/Engine.cpp
+++ b/src/gui/interface/Engine.cpp
@ -83,6 +83,8 @@ void Engine::ShowWindow(Window * window)
 	{
 		window->Position.Y = (g->Size().Y - window->Size.Y) / 2;
 	}
+	window->Size = window->Size.Min(g->Size());
+	window->Position = window->Position.Clamp(RectBetween<int>({0, 0}, g->Size()));
 	/*if(window->Position.Y > 0)
 	{
 		windowTargetPosition = window->Position;
--- a/src/gui/interface/Panel.cpp
+++ b/src/gui/interface/Panel.cpp
@ -114,32 +114,35 @@ void Panel::OnMouseClick(int localx, int localy, unsigned button)

 void Panel::OnMouseDown(int x, int y, unsigned button)
 {
-	auto localx = x - Position.X;
-	auto localy = y - Position.Y;
-	//check if clicked a child
-	for(int i = children.size()-1; i >= 0 ; --i)
+	if (MouseDownInside)
 	{
-		//child must be enabled
-		if(children[i]->Enabled)
+		auto localx = x - Position.X;
+		auto localy = y - Position.Y;
+		//check if clicked a child
+		for(int i = children.size()-1; i >= 0 ; --i)
 		{
-			//is mouse inside?
-			if( localx >= children[i]->Position.X + ViewportPosition.X &&
-				localy >= children[i]->Position.Y + ViewportPosition.Y &&
-				localx < children[i]->Position.X + ViewportPosition.X + children[i]->Size.X &&
-				localy < children[i]->Position.Y + ViewportPosition.Y + children[i]->Size.Y )
+			//child must be enabled
+			if(children[i]->Enabled)
 			{
-				GetParentWindow()->FocusComponent(children[i]);
-				children[i]->MouseDownInside = true;
-				break;
+				//is mouse inside?
+				if( localx >= children[i]->Position.X + ViewportPosition.X &&
+					localy >= children[i]->Position.Y + ViewportPosition.Y &&
+					localx < children[i]->Position.X + ViewportPosition.X + children[i]->Size.X &&
+					localy < children[i]->Position.Y + ViewportPosition.Y + children[i]->Size.Y )
+				{
+					GetParentWindow()->FocusComponent(children[i]);
+					children[i]->MouseDownInside = true;
+					break;
+				}
 			}
 		}
-	}

-	XOnMouseDown(x, y, button);
-	for (size_t i = 0; i < children.size(); ++i)
-	{
-		if(children[i]->Enabled)
-			children[i]->OnMouseDown(x - Position.X - ViewportPosition.X, y - Position.Y - ViewportPosition.Y, button);
+		XOnMouseDown(x, y, button);
+		for (size_t i = 0; i < children.size(); ++i)
+		{
+			if(children[i]->Enabled)
+				children[i]->OnMouseDown(x - Position.X - ViewportPosition.X, y - Position.Y - ViewportPosition.Y, button);
+		}
 	}
 }

@ -150,12 +153,14 @@ void Panel::OnMouseHover(int localx, int localy)
 	{
 		if (children[i]->Enabled)
 		{
-			if( localx >= children[i]->Position.X &&
-				localy >= children[i]->Position.Y &&
-				localx < children[i]->Position.X + children[i]->Size.X &&
-				localy < children[i]->Position.Y + children[i]->Size.Y )
+			auto px = children[i]->Position.X + ViewportPosition.X;
+			auto py = children[i]->Position.Y + ViewportPosition.Y;
+			if( localx >= px &&
+				localy >= py &&
+				localx < px + children[i]->Size.X &&
+				localy < py + children[i]->Size.Y )
 			{
-				children[i]->OnMouseHover(localx - children[i]->Position.X, localy - children[i]->Position.Y);
+				children[i]->OnMouseHover(localx - px, localy - py);
 				break;
 			}
 		}
--- a/src/gui/interface/SaveButton.cpp
+++ b/src/gui/interface/SaveButton.cpp
@ -361,10 +361,10 @@ void SaveButton::OnMouseMoved(int x, int y)
 	isMouseInsideHistory = false;
 	if (MouseInside)
 	{
-		if(y > Size.Y-11)
+		if (y > Size.Y-11)
 			isMouseInsideAuthor = true;

-		if(showVotes && y > Size.Y-29 && y < Size.Y - 18 && x > 0 && x < 9)
+		if (y > Size.Y-29 && y < Size.Y - 18 && x > 0 && x < 9)
 			isMouseInsideHistory = true;
 	}
 }
--- a/src/gui/interface/ScrollPanel.cpp
+++ b/src/gui/interface/ScrollPanel.cpp
@ -75,6 +75,7 @@ void ScrollPanel::XOnMouseDown(int x, int y, unsigned int button)
 {
 	if (MouseDownInside)
 	{
+		CancelPanning();
 		if (isMouseInsideScrollbar)
 		{
 			scrollbarSelected = true;
@ -86,24 +87,31 @@ void ScrollPanel::XOnMouseDown(int x, int y, unsigned int button)
 	}
 }

+void ScrollPanel::CancelPanning()
+{
+	panning = false;
+	panHistory = {};
+	yScrollVel = 0;
+}
+
 void ScrollPanel::XOnMouseUp(int x, int y, unsigned int button)
 {
 	scrollbarSelected = false;
-	panning = false;
+	auto oldPanHistory = panHistory;
+	CancelPanning();
 	{
-		auto it = panHistory.end();
-		while (it != panHistory.begin() && *(it - 1))
+		auto it = oldPanHistory.end();
+		while (it != oldPanHistory.begin() && *(it - 1))
 		{
 			--it;
 		}
-		if (it < panHistory.end())
+		if (it < oldPanHistory.end())
 		{
-			auto offsetYDiff = panHistory.back()->offsetY - (*it)->offsetY;
-			auto tickDiff = panHistory.back()->ticks - (*it)->ticks;
+			auto offsetYDiff = oldPanHistory.back()->offsetY - (*it)->offsetY;
+			auto tickDiff = oldPanHistory.back()->ticks - (*it)->ticks;
 			yScrollVel += offsetYDiff / tickDiff * (1000.f / Engine::Ref().GetFps());
 		}
 	}
-	panHistory = {};
 	isMouseInsideScrollbarArea = false;
 	scrollbarClickLocation = 0;
 }
--- a/src/gui/interface/ScrollPanel.h
+++ b/src/gui/interface/ScrollPanel.h
@ -7,6 +7,8 @@ namespace ui
 {
 	class ScrollPanel: public Panel
 	{
+		void CancelPanning();
+
 	protected:
 		int scrollBarWidth;
 		Point maxOffset;
--- a/src/gui/interface/Slider.cpp
+++ b/src/gui/interface/Slider.cpp
@ -50,8 +50,11 @@ void Slider::OnMouseMoved(int x, int y)

 void Slider::OnMouseDown(int x, int y, unsigned button)
 {
-	isMouseDown = true;
-	updatePosition(x - Position.X);
+	if (MouseDownInside)
+	{
+		isMouseDown = true;
+		updatePosition(x - Position.X);
+	}
 }

 void Slider::OnMouseUp(int x, int y, unsigned button)
--- a/src/gui/localbrowser/LocalBrowserModel.cpp
+++ b/src/gui/localbrowser/LocalBrowserModel.cpp
@ -59,6 +59,8 @@ void LocalBrowserModel::OpenSave(int index)
 {
 	stamp = std::move(savesList[index]);
 	savesList.clear();
+	notifyPageChanged();
+	notifySavesListChanged();
 }

 bool LocalBrowserModel::GetMoveToFront()
--- a/src/gui/login/LoginModel.cpp
+++ b/src/gui/login/LoginModel.cpp
@ -1,5 +1,6 @@
 #include "LoginModel.h"
 #include "LoginView.h"
+#include "Config.h"
 #include "client/Client.h"
 #include "client/http/LoginRequest.h"
 #include "client/http/LogoutRequest.h"
@ -8,7 +9,7 @@ void LoginModel::Login(ByteString username, ByteString password)
 {
 	if (username.Contains("@"))
 	{
-		statusText = "Use your Powder Toy account to log in, not your email. If you don't have a Powder Toy account, you can create one at https://powdertoy.co.uk/Register.html";
+		statusText = String::Build("Use your Powder Toy account to log in, not your email. If you don't have a Powder Toy account, you can create one at https://", SERVER, "/Register.html");
 		loginStatus = loginIdle;
 		notifyStatusChanged();
 		return;
--- a/src/gui/options/OptionsView.cpp
+++ b/src/gui/options/OptionsView.cpp
@ -76,13 +76,13 @@ OptionsView::OptionsView() : ui::Window(ui::Point(-1, -1), ui::Point(320, 340))
 		auto *checkbox = new ui::Checkbox(ui::Point(8 + indent * 15, currentY), ui::Point(1, 16), text, "");
 		autoWidth(checkbox, 0);
 		checkbox->SetActionCallback({ action });
-		scrollPanel->AddChild(checkbox);
 		currentY += 14;
 		if (info.size())
 		{
 			addLabel(indent, info);
 		}
 		currentY += 4;
+		scrollPanel->AddChild(checkbox);
 		return checkbox;
 	};
 	auto addDropDown = [this, &currentY, &autoWidth](String info, std::vector<std::pair<String, int>> options, std::function<void ()> action) {
@ -137,10 +137,11 @@ OptionsView::OptionsView() : ui::Window(ui::Point(-1, -1), ui::Point(320, 340))
 		ambientAirTemp->SetDefocusCallback({ [this] {
 			UpdateAirTemp(ambientAirTemp->GetText(), true);
 		}});
+		ambientAirTemp->SetLimit(9);
 		scrollPanel->AddChild(ambientAirTemp);
 		ambientAirTempPreview = new ui::Button(ui::Point(Size.X-31, currentY), ui::Point(16, 16), "", "Preview");
 		scrollPanel->AddChild(ambientAirTempPreview);
-		auto *label = new ui::Label(ui::Point(8, currentY), ui::Point(Size.X-96, 16), "Ambient air temperature");
+		auto *label = new ui::Label(ui::Point(8, currentY), ui::Point(Size.X-105, 16), "Ambient air temperature");
 		label->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 		label->Appearance.VerticalAlign = ui::Appearance::AlignMiddle;
 		scrollPanel->AddChild(label);
--- a/src/gui/preview/PreviewModel.cpp
+++ b/src/gui/preview/PreviewModel.cpp
@ -147,7 +147,7 @@ void PreviewModel::OnSaveReady()
 	{
 		auto gameSave = std::make_unique<GameSave>(*saveData);
 		if (gameSave->fromNewerVersion)
-			new ErrorMessage("This save is from a newer version", "Please update TPT in game or at https://powdertoy.co.uk");
+			new ErrorMessage("This save is from a newer version", String::Build("Please update TPT in game or at https://", SERVER));
 		saveInfo->SetGameSave(std::move(gameSave));
 	}
 	catch(ParseException &e)
--- a/src/gui/preview/PreviewView.cpp
+++ b/src/gui/preview/PreviewView.cpp
@ -111,9 +111,9 @@ PreviewView::PreviewView(std::unique_ptr<VideoBuffer> newSavePreview):
 	AddComponent(missingElementsButton);

 	if(showAvatars)
-		saveNameLabel = new ui::Label(ui::Point(39, (YRES/2)+4), ui::Point(180, 16), "");
+		saveNameLabel = new ui::Label(ui::Point(39, (YRES/2)+4), ui::Point(265, 16), "");
 	else
-		saveNameLabel = new ui::Label(ui::Point(5, (YRES/2)+4), ui::Point(200, 16), "");
+		saveNameLabel = new ui::Label(ui::Point(5, (YRES/2)+4), ui::Point(300, 16), "");
 	saveNameLabel->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	saveNameLabel->Appearance.VerticalAlign = ui::Appearance::AlignMiddle;
 	AddComponent(saveNameLabel);
@ -129,9 +129,9 @@ PreviewView::PreviewView(std::unique_ptr<VideoBuffer> newSavePreview):
 	AddComponent(saveDescriptionLabel);

 	if(showAvatars)
-		authorDateLabel = new ui::Label(ui::Point(39, (YRES/2)+4+15), ui::Point(180, 16), "");
+		authorDateLabel = new ui::Label(ui::Point(39, (YRES/2)+4+15), ui::Point(200, 16), "");
 	else
-		authorDateLabel = new ui::Label(ui::Point(5, (YRES/2)+4+15), ui::Point(200, 16), "");
+		authorDateLabel = new ui::Label(ui::Point(5, (YRES/2)+4+15), ui::Point(220, 16), "");
 	authorDateLabel->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	authorDateLabel->Appearance.VerticalAlign = ui::Appearance::AlignMiddle;
 	AddComponent(authorDateLabel);
@ -148,7 +148,7 @@ PreviewView::PreviewView(std::unique_ptr<VideoBuffer> newSavePreview):
 		AddComponent(avatarButton);
 	}

-	viewsLabel = new ui::Label(ui::Point((XRES/2)-80, (YRES/2)+4+15), ui::Point(80, 16), "");
+	viewsLabel = new ui::Label(ui::Point((XRES/2)-88, (YRES/2)+4+15), ui::Point(88, 16), "");
 	viewsLabel->Appearance.HorizontalAlign = ui::Appearance::AlignRight;
 	viewsLabel->Appearance.VerticalAlign = ui::Appearance::AlignMiddle;
 	AddComponent(viewsLabel);
@ -644,6 +644,7 @@ void PreviewView::NotifyCommentBoxEnabledChanged(PreviewModel * sender)
 		} });
 		addCommentBox->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 		addCommentBox->SetMultiline(true);
+		addCommentBox->SetLimit(1000);
 		AddComponent(addCommentBox);
 		submitCommentButton = new ui::Button(ui::Point(Size.X-40, Size.Y-19), ui::Point(40, 19), "Submit");
 		submitCommentButton->SetActionCallback({ [this] { submitComment(); } });
--- a/src/gui/profile/ProfileActivity.cpp
+++ b/src/gui/profile/ProfileActivity.cpp
@ -70,7 +70,7 @@ void ProfileActivity::setUserInfo(UserInfo newInfo)
 	int currentY = 5;

 	// username label
-	ui::Label * title = new ui::Label(ui::Point(4, currentY), ui::Point(Size.X-8-(40+8+75), 15), info.username.FromUtf8());
+	ui::Label * title = new ui::Label(ui::Point(4, currentY), ui::Point(Size.X-8-(40+16+75), 15), info.username.FromUtf8());
 	title->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	scrollPanel->AddChild(title);

@ -90,13 +90,13 @@ void ProfileActivity::setUserInfo(UserInfo newInfo)
 	currentY += 23;

 	// age
-	ui::Label * ageTitle = new ui::Label(ui::Point(4, currentY), ui::Point(18, 15), "Age:");
+	ui::Label * ageTitle = new ui::Label(ui::Point(4, currentY), ui::Point(23, 15), "Age:");
 	ageTitle->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	ageTitle->SetTextColour(ui::Colour(180, 180, 180));
 	scrollPanel->AddChild(ageTitle);

 	// can't figure out how to tell a null from a 0 in the json library we use
-	ui::Label *age = new ui::Label(ui::Point(8+ageTitle->Size.X, currentY), ui::Point(40, 15), info.age ? String::Build(info.age) : "\bgNot Provided");
+	ui::Label *age = new ui::Label(ui::Point(5+ageTitle->Size.X, currentY), ui::Point(Size.X-ageTitle->Size.X-56, 15), info.age ? String::Build(info.age) : "\bgNot Provided");
 	age->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	scrollPanel->AddChild(age);
 	currentY += 2+age->Size.Y;
@ -108,20 +108,25 @@ void ProfileActivity::setUserInfo(UserInfo newInfo)
 	scrollPanel->AddChild(locationTitle);

 	if (editable)
-		location = new ui::Textbox(ui::Point(8+locationTitle->Size.X, currentY), ui::Point(Size.X-locationTitle->Size.X-16, 17), info.location);
+	{
+		location = new ui::Textbox(ui::Point(5+locationTitle->Size.X, currentY), ui::Point(Size.X-locationTitle->Size.X-16, 17), info.location);
+		((ui::Textbox*)location)->SetLimit(40);
+	}
 	else
-		location = new ui::Label(ui::Point(4+locationTitle->Size.X, currentY), ui::Point(Size.X-locationTitle->Size.X-14, 17), info.location);
+	{
+		location = new ui::Label(ui::Point(5+locationTitle->Size.X, currentY), ui::Point(Size.X-locationTitle->Size.X-14, 17), info.location);
+	}
 	location->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	scrollPanel->AddChild(location);
 	currentY += 2+location->Size.Y;

 	// website
-	ui::Label * websiteTitle = new ui::Label(ui::Point(4, currentY), ui::Point(38, 15), "Website:");
+	ui::Label * websiteTitle = new ui::Label(ui::Point(1, currentY), ui::Point(42, 15), "Website:");
 	websiteTitle->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	websiteTitle->SetTextColour(ui::Colour(180, 180, 180));
 	scrollPanel->AddChild(websiteTitle);

-	ui::Label *website = new ui::Label(ui::Point(8+websiteTitle->Size.X, currentY), ui::Point(Size.X-websiteTitle->Size.X-16, 15), info.website.FromUtf8());
+	ui::Label *website = new ui::Label(ui::Point(2+websiteTitle->Size.X, currentY), ui::Point(Size.X-websiteTitle->Size.X-16, 15), info.website.FromUtf8());
 	website->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	scrollPanel->AddChild(website);
 	currentY += 2+website->Size.Y;
@ -134,34 +139,34 @@ void ProfileActivity::setUserInfo(UserInfo newInfo)
 	currentY += savesTitle->Size.Y;

 		// saves count
-		ui::Label * saveCountTitle = new ui::Label(ui::Point(12, currentY), ui::Point(30, 15), "Count:");
+		ui::Label * saveCountTitle = new ui::Label(ui::Point(12, currentY), ui::Point(32, 15), "Count:");
 		saveCountTitle->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 		saveCountTitle->SetTextColour(ui::Colour(180, 180, 180));
 		scrollPanel->AddChild(saveCountTitle);

-		ui::Label *savesCount = new ui::Label(ui::Point(12+saveCountTitle->Size.X, currentY), ui::Point(Size.X-saveCountTitle->Size.X-16, 15), String::Build(info.saveCount));
+		ui::Label *savesCount = new ui::Label(ui::Point(13+saveCountTitle->Size.X, currentY), ui::Point(Size.X-saveCountTitle->Size.X-24, 15), String::Build(info.saveCount));
 		savesCount->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 		scrollPanel->AddChild(savesCount);
 		currentY += savesCount->Size.Y;

 		// average score
-		ui::Label * averageScoreTitle = new ui::Label(ui::Point(12, currentY), ui::Point(70, 15), "Average Score:");
+		ui::Label * averageScoreTitle = new ui::Label(ui::Point(12, currentY), ui::Point(72, 15), "Average Score:");
 		averageScoreTitle->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 		averageScoreTitle->SetTextColour(ui::Colour(180, 180, 180));
 		scrollPanel->AddChild(averageScoreTitle);

-		ui::Label *averageScore = new ui::Label(ui::Point(12+averageScoreTitle->Size.X, currentY), ui::Point(Size.X-averageScoreTitle->Size.X-16, 15), String::Build(info.averageScore));
+		ui::Label *averageScore = new ui::Label(ui::Point(13+averageScoreTitle->Size.X, currentY), ui::Point(Size.X-averageScoreTitle->Size.X-24, 15), String::Build(info.averageScore));
 		averageScore->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 		scrollPanel->AddChild(averageScore);
 		currentY += averageScore->Size.Y;

 		// highest score
-		ui::Label * highestScoreTitle = new ui::Label(ui::Point(12, currentY), ui::Point(69, 15), "Highest Score:");
+		ui::Label * highestScoreTitle = new ui::Label(ui::Point(12, currentY), ui::Point(71, 15), "Highest Score:");
 		highestScoreTitle->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 		highestScoreTitle->SetTextColour(ui::Colour(180, 180, 180));
 		scrollPanel->AddChild(highestScoreTitle);

-		ui::Label *highestScore = new ui::Label(ui::Point(12+highestScoreTitle->Size.X, currentY), ui::Point(Size.X-highestScoreTitle->Size.X-16, 15), String::Build(info.highestScore));
+		ui::Label *highestScore = new ui::Label(ui::Point(13+highestScoreTitle->Size.X, currentY), ui::Point(Size.X-highestScoreTitle->Size.X-24, 15), String::Build(info.highestScore));
 		highestScore->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 		scrollPanel->AddChild(highestScore);
 		currentY += 2+highestScore->Size.Y;
--- a/src/gui/save/ServerSaveActivity.cpp
+++ b/src/gui/save/ServerSaveActivity.cpp
@ -79,6 +79,7 @@ ServerSaveActivity::ServerSaveActivity(std::unique_ptr<SaveInfo> newSave, OnUplo
 	nameField->Appearance.VerticalAlign = ui::Appearance::AlignMiddle;
 	nameField->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	nameField->SetActionCallback({ [this] { CheckName(nameField->GetText()); } });
+	nameField->SetLimit(50);
 	AddComponent(nameField);
 	FocusComponent(nameField);

--- a/src/gui/search/SearchController.cpp
+++ b/src/gui/search/SearchController.cpp
@ -136,6 +136,32 @@ void SearchController::SetPageRelative(int offset)
 		searchModel->UpdateSaveList(page, searchModel->GetLastQuery());
 }

+void SearchController::ChangePeriod(int period)
+{
+	switch(period)
+	{
+		case 0:
+			searchModel->SetPeriod(http::allSaves);
+			break;
+		case 1:
+			searchModel->SetPeriod(http::todaySaves);
+			break;
+		case 2:
+			searchModel->SetPeriod(http::weekSaves);
+			break;
+		case 3:
+			searchModel->SetPeriod(http::monthSaves);
+			break;
+		case 4:
+			searchModel->SetPeriod(http::yearSaves);
+			break;
+		default:
+			searchModel->SetPeriod(http::allSaves);
+	}
+
+	searchModel->UpdateSaveList(1, searchModel->GetLastQuery());
+}
+
 void SearchController::ChangeSort()
 {
 	if(searchModel->GetSort() == http::sortByDate)
--- a/src/gui/search/SearchController.h
+++ b/src/gui/search/SearchController.h
@ -37,6 +37,7 @@ public:
 	void Refresh();
 	void SetPage(int page);
 	void SetPageRelative(int offset);
+	void ChangePeriod(int period);
 	void ChangeSort();
 	void ShowOwn(bool show);
 	void ShowFavourite(bool show);
--- a/src/gui/search/SearchModel.cpp
+++ b/src/gui/search/SearchModel.cpp
@ -11,6 +11,7 @@
 #include <cmath>

 SearchModel::SearchModel():
+	currentPeriod(http::allSaves),
 	currentSort(http::sortByVotes),
 	currentPage(1),
 	resultCount(0),
@ -30,11 +31,11 @@ bool SearchModel::GetShowTags()
 	return showTags;
 }

-void SearchModel::BeginSearchSaves(int start, int count, String query, http::Sort sort, http::Category category)
+void SearchModel::BeginSearchSaves(int start, int count, String query, http::Period period, http::Sort sort, http::Category category)
 {
 	lastError = "";
 	resultCount = 0;
-	searchSaves = std::make_unique<http::SearchSavesRequest>(start, count, query.ToUtf8(), sort, category);
+	searchSaves = std::make_unique<http::SearchSavesRequest>(start, count, query.ToUtf8(), period, sort, category);
 	searchSaves->Start();
 }

@ -95,7 +96,7 @@ bool SearchModel::UpdateSaveList(int pageNumber, String query)
 		//resultCount = 0;
 		currentPage = pageNumber;

-		if(pageNumber == 1 && !showOwn && !showFavourite && currentSort == http::sortByVotes && query == "")
+		if(pageNumber == 1 && !showOwn && !showFavourite && currentPeriod == http::allSaves && currentSort == http::sortByVotes && query == "")
 			SetShowTags(true);
 		else
 			SetShowTags(false);
@ -120,7 +121,7 @@ bool SearchModel::UpdateSaveList(int pageNumber, String query)
 		{
 			category = http::categoryMyOwn;
 		}
-		BeginSearchSaves((currentPage-1)*20, 20, lastQuery, currentSort, category);
+		BeginSearchSaves((currentPage-1)*20, 20, lastQuery, currentPeriod, currentSort, category);
 		return true;
 	}
 	return false;
@ -178,6 +179,7 @@ void SearchModel::AddObserver(SearchView * observer)
 	observers.push_back(observer);
 	observer->NotifySaveListChanged(this);
 	observer->NotifyPageChanged(this);
+	observer->NotifyPeriodChanged(this);
 	observer->NotifySortChanged(this);
 	observer->NotifyShowOwnChanged(this);
 	observer->NotifyTagListChanged(this);
@ -258,6 +260,15 @@ void SearchModel::notifyPageChanged()
 	}
 }

+void SearchModel::notifyPeriodChanged()
+{
+	for (size_t i = 0; i < observers.size(); i++)
+	{
+		SearchView* cObserver = observers[i];
+		cObserver->NotifyPeriodChanged(this);
+	}
+}
+
 void SearchModel::notifySortChanged()
 {
 	for (size_t i = 0; i < observers.size(); i++)
@ -296,7 +307,7 @@ void SearchModel::notifySelectedChanged()

 int SearchModel::GetPageCount()
 {
-	if (!showOwn && !showFavourite && currentSort == http::sortByVotes && lastQuery == "")
+	if (!showOwn && !showFavourite && currentPeriod == http::allSaves && currentSort == http::sortByVotes && lastQuery == "")
 		return std::max(1, (int)(ceil(resultCount/20.0f))+1); //add one for front page (front page saves are repeated twice)
 	else
 		return std::max(1, (int)(ceil(resultCount/20.0f)));
--- a/src/gui/search/SearchModel.h
+++ b/src/gui/search/SearchModel.h
@ -18,7 +18,7 @@ class SearchModel
 {
 private:
 	std::unique_ptr<http::SearchSavesRequest> searchSaves;
-	void BeginSearchSaves(int start, int count, String query, http::Sort sort, http::Category category);
+	void BeginSearchSaves(int start, int count, String query, http::Period period, http::Sort sort, http::Category category);
 	std::vector<std::unique_ptr<SaveInfo>> EndSearchSaves();

 	void BeginGetTags(int start, int count, String query);
@ -26,6 +26,7 @@ private:
 	std::unique_ptr<http::SearchTagsRequest> getTags;

 	std::unique_ptr<SaveInfo> loadedSave;
+	http::Period currentPeriod;
 	http::Sort currentSort;
 	String lastQuery;
 	String lastError;
@ -42,6 +43,7 @@ private:
 	void notifyTagListChanged();
 	void notifySelectedChanged();
 	void notifyPageChanged();
+	void notifyPeriodChanged();
 	void notifySortChanged();
 	void notifyShowOwnChanged();
 	void notifyShowFavouriteChanged();
@ -61,6 +63,8 @@ public:
 	int GetPageCount();
 	int GetPageNum() { return currentPage; }
 	String GetLastQuery() { return lastQuery; }
+	void SetPeriod(http::Period period) { if(!searchSaves) { currentPeriod = period; } notifyPeriodChanged(); }
+	http::Period GetPeriod() { return currentPeriod; }
 	void SetSort(http::Sort sort) { if(!searchSaves) { currentSort = sort; } notifySortChanged(); }
 	http::Sort GetSort() { return currentSort; }
 	void SetShowOwn(bool show) { if(!searchSaves) { if(show!=showOwn) { showOwn = show; } } notifyShowOwnChanged();  }
--- a/src/gui/search/SearchView.cpp
+++ b/src/gui/search/SearchView.cpp
@ -9,6 +9,7 @@
 #include "gui/interface/RichLabel.h"
 #include "gui/interface/Textbox.h"
 #include "gui/interface/Spinner.h"
+#include "gui/interface/DropDown.h"
 #include "PowderToySDL.h"
 #include "graphics/Graphics.h"
 #include "SimulationConfig.h"
@ -43,13 +44,25 @@ SearchView::SearchView():
 	AddComponent(pageCountLabel);
 	AddComponent(pageTextbox);

-	searchField = new ui::Textbox(ui::Point(60, 10), ui::Point(WINDOWW-238, 17), "", "[search]");
+	searchField = new ui::Textbox(ui::Point(60, 10), ui::Point(WINDOWW-283, 17), "", "[search]");
 	searchField->Appearance.icon = IconSearch;
 	searchField->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	searchField->Appearance.VerticalAlign = ui::Appearance::AlignMiddle;
 	searchField->SetActionCallback({ [this] { doSearch(); } });
+	searchField->SetLimit(100);
 	FocusComponent(searchField);

+	dateRange = new ui::DropDown(ui::Point(WINDOWW-185, 10), ui::Point(36, 17));
+	dateRange->SetActionCallback({ [this] { c->ChangePeriod(dateRange->GetOption().second); } });
+	dateRange->AddOption({"All", 0});
+	dateRange->AddOption({"Day", 1});
+	dateRange->AddOption({"Week", 2});
+	dateRange->AddOption({"Month", 3});
+	dateRange->AddOption({"Year", 4});
+	dateRange->Appearance.HorizontalAlign = ui::Appearance::AlignCentre;
+	dateRange->Appearance.VerticalAlign = ui::Appearance::AlignMiddle;
+	AddComponent(dateRange);
+
 	sortButton = new ui::Button(ui::Point(WINDOWW-140, 10), ui::Point(61, 17), "Sort");
 	sortButton->SetIcon(IconVoteSort);
 	sortButton->SetTogglable(true);
@ -201,6 +214,11 @@ void SearchView::Search(String query)
 	c->DoSearch(query, true);
 }

+void SearchView::NotifyPeriodChanged(SearchModel * sender)
+{
+	dateRange->SetOption(sender->GetPeriod());
+}
+
 void SearchView::NotifySortChanged(SearchModel * sender)
 {
 	if(sender->GetSort() == http::sortByVotes)
@ -489,7 +507,7 @@ void SearchView::NotifySaveListChanged(SearchModel * sender)
 		loadingSpinner->Visible = false;
 		if (!errorLabel)
 		{
-			errorLabel = new ui::Label(ui::Point((WINDOWW/2)-100, (WINDOWH/2)-6), ui::Point(200, 12), "Error");
+			errorLabel = new ui::Label(ui::Point(0, (WINDOWH/2)-6), ui::Point(WINDOWW, 12), "Error");
 			AddComponent(errorLabel);
 		}
 		if (!sender->GetSavesLoaded())
--- a/src/gui/search/SearchView.h
+++ b/src/gui/search/SearchView.h
@ -11,6 +11,7 @@ namespace ui
 	class Label;
 	class Spinner;
 	class Textbox;
+	class DropDown;
 }

 class SearchModel;
@ -32,6 +33,7 @@ private:
 	ui::Label * pageCountLabel;
 	ui::Label * tagsLabel;
 	ui::RichLabel * motdLabel = nullptr;
+	ui::DropDown * dateRange;
 	ui::Button * sortButton;
 	ui::Button * ownButton;
 	ui::Spinner * loadingSpinner;
@ -52,6 +54,7 @@ public:
 	void NotifySaveListChanged(SearchModel * sender);
 	void NotifySelectedChanged(SearchModel * sender);
 	void NotifyPageChanged(SearchModel * sender);
+	void NotifyPeriodChanged(SearchModel * sender);
 	void NotifySortChanged(SearchModel * sender);
 	void NotifyShowOwnChanged(SearchModel * sender);
 	void NotifyShowFavouriteChanged(SearchModel * sender);
--- a/src/gui/tags/TagsView.cpp
+++ b/src/gui/tags/TagsView.cpp
@ -30,6 +30,7 @@ TagsView::TagsView():
 	tagInput->Appearance.icon = IconTag;
 	tagInput->Appearance.HorizontalAlign = ui::Appearance::AlignLeft;
 	tagInput->Appearance.VerticalAlign = ui::Appearance::AlignMiddle;
+	tagInput->SetLimit(16);
 	AddComponent(tagInput);
 	FocusComponent(tagInput);

--- a/src/gui/update/UpdateActivity.cpp
+++ b/src/gui/update/UpdateActivity.cpp
@ -151,7 +151,7 @@ void UpdateActivity::NotifyError(Task * sender)
 	new ConfirmPrompt("Autoupdate failed", sb.Build(), { [this] {
 		if constexpr (!USE_UPDATESERVER)
 		{
-			Platform::OpenURI(ByteString(SCHEME) + "powdertoy.co.uk/Download.html");
+			Platform::OpenURI(ByteString::Build(SCHEME, SERVER, "/Download.html"));
 		}
 		Exit();
 	}, [this] { Exit(); } });
--- a/src/lua/LuaElements.cpp
+++ b/src/lua/LuaElements.cpp
@ -856,7 +856,7 @@ void LuaElements::Open(lua_State *L)
 	LCONST(TYPE_GAS);
 	LCONST(TYPE_ENERGY);
 	LCONST(PROP_CONDUCTS);
-	LCONST(PROP_BLACK);
+	LCONST(PROP_PHOTPASS);
 	LCONST(PROP_NEUTPENETRATE);
 	LCONST(PROP_NEUTABSORB);
 	LCONST(PROP_NEUTPASS);
--- a/src/lua/LuaInterface.cpp
+++ b/src/lua/LuaInterface.cpp
@ -50,7 +50,10 @@ static int beginMessageBox(lua_State *L)
 	auto message = PickIfType(L, 2, String("Message"));
 	auto large = PickIfType(L, 3, false);
 	auto cb = std::make_shared<LuaSmartRef>(); // * Bind to main lua state (might be different from L).
-	cb->Assign(L, lua_gettop(L));
+	if (lua_gettop(L))
+	{
+		cb->Assign(L, lua_gettop(L));
+	}
 	new InformationMessage(title, message, large, { [cb]() {
 		auto *lsi = GetLSI();
 		auto L = lsi->L;
@ -74,7 +77,10 @@ static int beginThrowError(lua_State *L)
 {
 	auto errorMessage = PickIfType(L, 1, String("Error text"));
 	auto cb = std::make_shared<LuaSmartRef>(); // * Bind to main lua state (might be different from L).
-	cb->Assign(L, lua_gettop(L));
+	if (lua_gettop(L))
+	{
+		cb->Assign(L, lua_gettop(L));
+	}
 	new ErrorMessage("Error", errorMessage, { [cb]() {
 		auto *lsi = GetLSI();
 		auto L = lsi->L;
@ -101,7 +107,10 @@ static int beginInput(lua_State *L)
 	auto text = PickIfType(L, 3, String(""));
 	auto shadow = PickIfType(L, 4, String(""));
 	auto cb = std::make_shared<LuaSmartRef>(); // * Bind to main lua state (might be different from L).
-	cb->Assign(L, lua_gettop(L));
+	if (lua_gettop(L))
+	{
+		cb->Assign(L, lua_gettop(L));
+	}
 	auto handle = [cb](std::optional<String> input) {
 		auto *lsi = GetLSI();
 		auto L = lsi->L;
@ -140,7 +149,10 @@ static int beginConfirm(lua_State *L)
 	auto message = PickIfType(L, 2, String("Message"));
 	auto buttonText = PickIfType(L, 3, String("Confirm"));
 	auto cb = std::make_shared<LuaSmartRef>(); // * Bind to main lua state (might be different from L).
-	cb->Assign(L, lua_gettop(L));
+	if (lua_gettop(L))
+	{
+		cb->Assign(L, lua_gettop(L));
+	}
 	auto handle = [cb](int result) {
 		auto *lsi = GetLSI();
 		auto L = lsi->L;
--- a/src/lua/LuaSimulation.cpp
+++ b/src/lua/LuaSimulation.cpp
@ -1960,9 +1960,11 @@ void LuaSimulation::Open(lua_State *L)
 	};
 	lua_newtable(L);
 	luaL_register(L, NULL, reg);
+
 #define LCONST(v) lua_pushinteger(L, int(v)); lua_setfield(L, -2, #v)
 #define LCONSTF(v) lua_pushnumber(L, float(v)); lua_setfield(L, -2, #v)
 #define LCONSTAS(k, v) lua_pushinteger(L, int(v)); lua_setfield(L, -2, k)
+
 	LCONST(CELL);
 	LCONST(XCELLS);
 	LCONST(YCELLS);
@ -1987,6 +1989,7 @@ void LuaSimulation::Open(lua_State *L)
 	LCONST(ISTP);
 	LCONSTF(CFDS);
 	LCONSTF(MAX_VELOCITY);
+
 	LCONST(TOOL_HEAT);
 	LCONST(TOOL_COOL);
 	LCONST(TOOL_VAC);
@ -1996,6 +1999,7 @@ void LuaSimulation::Open(lua_State *L)
 	LCONST(TOOL_MIX);
 	LCONST(TOOL_CYCL);
 	LCONSTAS("TOOL_WIND", sd.tools.size());
+
 	LCONST(DECO_DRAW);
 	LCONST(DECO_CLEAR);
 	LCONST(DECO_ADD);
@ -2003,32 +2007,45 @@ void LuaSimulation::Open(lua_State *L)
 	LCONST(DECO_MULTIPLY);
 	LCONST(DECO_DIVIDE);
 	LCONST(DECO_SMUDGE);
+
 	LCONST(FLAG_STAGNANT);
 	LCONST(FLAG_SKIPMOVE);
 	LCONST(FLAG_MOVABLE);
 	LCONST(FLAG_PHOTDECO);
+
 	LCONST(PMAPBITS);
 	LCONST(PMAPMASK);
+
 	LCONST(BRUSH_CIRCLE);
 	LCONST(BRUSH_SQUARE);
 	LCONST(BRUSH_TRIANGLE);
 	LCONST(NUM_DEFAULTBRUSHES);
 	LCONSTAS("NUM_BRUSHES", lsi->gameModel->BrushListSize());
+
 	LCONST(EDGE_VOID);
 	LCONST(EDGE_SOLID);
 	LCONST(EDGE_LOOP);
 	LCONST(NUM_EDGEMODES);
+
 	LCONST(AIR_ON);
 	LCONST(AIR_PRESSUREOFF);
 	LCONST(AIR_VELOCITYOFF);
 	LCONST(AIR_OFF);
 	LCONST(AIR_NOUPDATE);
 	LCONST(NUM_AIRMODES);
+
 	LCONST(GRAV_VERTICAL);
 	LCONST(GRAV_OFF);
 	LCONST(GRAV_RADIAL);
 	LCONST(GRAV_CUSTOM);
 	LCONST(NUM_GRAVMODES);
+
+	LCONST(DECOSPACE_SRGB);
+	LCONST(DECOSPACE_LINEAR);
+	LCONST(DECOSPACE_GAMMA22);
+	LCONST(DECOSPACE_GAMMA18);
+	LCONST(NUM_DECOSPACES);
+
 	{
 		lua_newtable(L);
 		for (int i = 0; i < UI_WALLCOUNT; i++)
--- a/src/lua/luascripts/compat.lua
+++ b/src/lua/luascripts/compat.lua
@ -9,6 +9,7 @@ elem.FLAG_MOVABLE       = sim.FLAG_MOVABLE
 elem.FLAG_PHOTDECO      = sim.FLAG_PHOTDECO
 elem.FLAG_SKIPMOVE      = sim.FLAG_SKIPMOVE
 elem.FLAG_STAGNANT      = sim.FLAG_STAGNANT
+elem.PROP_BLACK         = 0
 elem.PROP_DRAWONCTYPE   = 0
 elem.ST_GAS             = 0
 elem.ST_LIQUID          = 0
--- a/src/prefs/Prefs.cpp
+++ b/src/prefs/Prefs.cpp
@ -20,6 +20,11 @@ void Prefs::Read()
 	Json::CharReaderBuilder rbuilder;
 	std::unique_ptr<Json::CharReader> const reader(rbuilder.newCharReader());
 	ByteString errs;
+	if (!data.size())
+	{
+		std::cerr << "no json data" << std::endl;
+		return;
+	}
 	if (!reader->parse(&data[0], &data[0] + data.size(), &root, &errs))
 	{
 		std::cerr << errs << std::endl;
--- a/src/simulation/ElementDefs.h
+++ b/src/simulation/ElementDefs.h
@ -17,7 +17,7 @@ constexpr auto TYPE_GAS           = UINT32_C(0x00000008);  //8 Gases (Includes p
 constexpr auto TYPE_ENERGY        = UINT32_C(0x00000010);  //16 Energy (Thunder, Light, Neutrons etc.)
 constexpr auto STATE_FLAGS        = UINT32_C(0x0000001F);
 constexpr auto PROP_CONDUCTS      = UINT32_C(0x00000020);  //32 Conducts electricity
-constexpr auto PROP_BLACK         = UINT32_C(0x00000040);  //64 Absorbs Photons (not currently implemented or used, a photwl attribute might be better)
+constexpr auto PROP_PHOTPASS      = UINT32_C(0x00000040);  //64 Photons pass through (may refract as in glass)
 constexpr auto PROP_NEUTPENETRATE = UINT32_C(0x00000080);  //128 Penetrated by neutrons
 constexpr auto PROP_NEUTABSORB    = UINT32_C(0x00000100);  //256 Absorbs neutrons, reflect is default
 constexpr auto PROP_NEUTPASS      = UINT32_C(0x00000200);  //512 Neutrons pass through, such as with glass
--- a/src/simulation/SimulationData.cpp
+++ b/src/simulation/SimulationData.cpp
@ -186,16 +186,14 @@ void SimulationData::init_can_move()
 		if (elements[movingType].Properties & TYPE_PART)
 			can_move[movingType][PT_SAWD] = 0;
 	}
-	//a list of lots of things PHOT can move through
-	// TODO: replace with property
+
 	for (destinationType = 0; destinationType < PT_NUM; destinationType++)
 	{
-		if (destinationType == PT_GLAS || destinationType == PT_PHOT || destinationType == PT_FILT || destinationType == PT_INVIS
-		 || destinationType == PT_CLNE || destinationType == PT_PCLN || destinationType == PT_BCLN || destinationType == PT_PBCN
-		 || destinationType == PT_WATR || destinationType == PT_DSTW || destinationType == PT_SLTW || destinationType == PT_GLOW
-		 || destinationType == PT_ISOZ || destinationType == PT_ISZS || destinationType == PT_QRTZ || destinationType == PT_PQRT
-		 || destinationType == PT_H2   || destinationType == PT_BGLA || destinationType == PT_C5 || destinationType == PT_RSST)
+		//a list of lots of things PHOT can move through
+		if (elements[destinationType].Properties & PROP_PHOTPASS)
 			can_move[PT_PHOT][destinationType] = 2;
+
+		//Things PROT and GRVT cannot move through
 		if (destinationType != PT_DMND && destinationType != PT_INSL && destinationType != PT_VOID && destinationType != PT_PVOD && destinationType != PT_VIBR && destinationType != PT_BVBR && destinationType != PT_PRTI && destinationType != PT_PRTO)
 		{
 			can_move[PT_PROT][destinationType] = 2;
--- a/src/simulation/elements/BCLN.cpp
+++ b/src/simulation/elements/BCLN.cpp
@ -31,7 +31,7 @@ void Element::Element_BCLN()
 	HeatConduct = 251;
 	Description = "Breakable Clone.";

-	Properties = TYPE_SOLID | PROP_LIFE_DEC | PROP_LIFE_KILL_DEC | PROP_NOCTYPEDRAW;
+	Properties = TYPE_SOLID | PROP_PHOTPASS | PROP_LIFE_DEC | PROP_LIFE_KILL_DEC | PROP_NOCTYPEDRAW;
 	CarriesTypeIn = 1U << FIELD_CTYPE;

 	LowPressure = IPL;
--- a/src/simulation/elements/BGLA.cpp
+++ b/src/simulation/elements/BGLA.cpp
@ -29,7 +29,7 @@ void Element::Element_BGLA()
 	HeatConduct = 150;
 	Description = "Broken Glass, heavy particles formed when glass breaks under pressure. Meltable. Bagels.";

-	Properties = TYPE_PART | PROP_NEUTPASS | PROP_HOT_GLOW;
+	Properties = TYPE_PART | PROP_NEUTPASS | PROP_PHOTPASS | PROP_HOT_GLOW;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/C5.cpp
+++ b/src/simulation/elements/C5.cpp
@ -32,7 +32,7 @@ void Element::Element_C5()
 	HeatConduct = 88;
 	Description = "Cold explosive, set off by anything cold.";

-	Properties = TYPE_SOLID | PROP_NEUTPENETRATE | PROP_LIFE_DEC;
+	Properties = TYPE_SOLID | PROP_NEUTPENETRATE | PROP_PHOTPASS | PROP_LIFE_DEC;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/CLNE.cpp
+++ b/src/simulation/elements/CLNE.cpp
@ -31,7 +31,7 @@ void Element::Element_CLNE()
 	HeatConduct = 251;
 	Description = "Clone. Duplicates any particles it touches.";

-	Properties = TYPE_SOLID | PROP_NOCTYPEDRAW;
+	Properties = TYPE_SOLID | PROP_PHOTPASS | PROP_NOCTYPEDRAW;
 	CarriesTypeIn = 1U << FIELD_CTYPE;

 	LowPressure = IPL;
--- a/src/simulation/elements/DSTW.cpp
+++ b/src/simulation/elements/DSTW.cpp
@ -33,7 +33,7 @@ void Element::Element_DSTW()
 	LatentHeat = 7500;
 	Description = "Distilled water, does not conduct electricity.";

-	Properties = TYPE_LIQUID|PROP_NEUTPASS;
+	Properties = TYPE_LIQUID | PROP_NEUTPASS | PROP_PHOTPASS;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/FILT.cpp
+++ b/src/simulation/elements/FILT.cpp
@ -33,7 +33,7 @@ void Element::Element_FILT()
 	HeatConduct = 251;
 	Description = "Filter for photons, changes the color.";

-	Properties = TYPE_SOLID | PROP_NOAMBHEAT | PROP_LIFE_DEC;
+	Properties = TYPE_SOLID | PROP_PHOTPASS | PROP_NOAMBHEAT | PROP_LIFE_DEC;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/GLAS.cpp
+++ b/src/simulation/elements/GLAS.cpp
@ -32,7 +32,7 @@ void Element::Element_GLAS()
 	HeatConduct = 150;
 	Description = "Glass. Meltable. Shatters under pressure, and refracts photons.";

-	Properties = TYPE_SOLID | PROP_NEUTPASS | PROP_HOT_GLOW | PROP_SPARKSETTLE;
+	Properties = TYPE_SOLID | PROP_NEUTPASS | PROP_PHOTPASS | PROP_HOT_GLOW | PROP_SPARKSETTLE;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/GLOW.cpp
+++ b/src/simulation/elements/GLOW.cpp
@ -33,7 +33,7 @@ void Element::Element_GLOW()
 	HeatConduct = 44;
 	Description = "Glow, Glows under pressure.";

-	Properties = TYPE_LIQUID | PROP_LIFE_DEC;
+	Properties = TYPE_LIQUID | PROP_PHOTPASS | PROP_LIFE_DEC;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
@ -59,17 +59,21 @@ static int update(UPDATE_FUNC_ARGS)
 				auto r = pmap[y+ry][x+rx];
 				if (!r)
 					continue;
+
 				if (TYP(r)==PT_WATR && sim->rng.chance(1, 400))
 				{
 					sim->kill_part(i);
 					sim->part_change_type(ID(r),x+rx,y+ry,PT_DEUT);
 					parts[ID(r)].life = 10;
+
 					return 1;
 				}
 				else if (TYP(r) == PT_GEL) //GLOW + GEL = RSST
 				{
 					sim->kill_part(i);
 					sim->part_change_type(ID(r),x+rx,y+ry,PT_RSST);
+					parts[ID(r)].tmp = 0;
+
 					return 1;
 				}
 			}
--- a/src/simulation/elements/H2.cpp
+++ b/src/simulation/elements/H2.cpp
@ -31,7 +31,7 @@ void Element::Element_H2()
 	HeatConduct = 251;
 	Description = "Hydrogen. Combusts with OXYG to make WATR. Undergoes fusion at high temperature and pressure.";

-	Properties = TYPE_GAS;
+	Properties = TYPE_GAS | PROP_PHOTPASS;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/ICEI.cpp
+++ b/src/simulation/elements/ICEI.cpp
@ -34,6 +34,7 @@ void Element::Element_ICEI()
 	Description = "Crushes under pressure. Cools down air.";

 	Properties = TYPE_SOLID|PROP_LIFE_DEC|PROP_NEUTPASS;
+	CarriesTypeIn = 1U << FIELD_CTYPE;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/INVIS.cpp
+++ b/src/simulation/elements/INVIS.cpp
@ -32,7 +32,7 @@ void Element::Element_INVIS()
 	HeatConduct = 164;
 	Description = "Invisible to particles while under pressure.";

-	Properties = TYPE_SOLID | PROP_NEUTPASS;
+	Properties = TYPE_SOLID | PROP_NEUTPASS | PROP_PHOTPASS;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/ISOZ.cpp
+++ b/src/simulation/elements/ISOZ.cpp
@ -32,7 +32,7 @@ void Element::Element_ISOZ()
 	HeatConduct = 29;
 	Description = "Isotope-Z. Radioactive liquid, decays into photons when touching PHOT or under negative pressure.";

-	Properties = TYPE_LIQUID|PROP_NEUTPENETRATE;
+	Properties = TYPE_LIQUID | PROP_NEUTPENETRATE | PROP_PHOTPASS;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/ISZS.cpp
+++ b/src/simulation/elements/ISZS.cpp
@ -32,7 +32,7 @@ void Element::Element_ISZS()
 	HeatConduct = 251;
 	Description = "Solid form of ISOZ, slowly decays into PHOT.";

-	Properties = TYPE_SOLID;
+	Properties = TYPE_SOLID | PROP_PHOTPASS;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/NEUT.cpp
+++ b/src/simulation/elements/NEUT.cpp
@ -54,6 +54,8 @@ void Element::Element_NEUT()

 static int update(UPDATE_FUNC_ARGS)
 {
+	auto &sd = SimulationData::CRef();
+	auto &elements = sd.elements;
 	unsigned int pressureFactor = 3 + (int)sim->pv[y/CELL][x/CELL];
 	for (int rx = -1; rx <= 1; rx++)
 	{
@ -178,7 +180,7 @@ static int update(UPDATE_FUNC_ARGS)
 						sim->create_part(ID(r), x, y, ct_under);

 						//If there's a correct tmp set, use it for ctype
-						if(tmp_under > 0 && ct_under < PT_NUM)
+						if((tmp_under > 0) && (tmp_under < PT_NUM) && (elements[ct_under].CarriesTypeIn & (1U << FIELD_CTYPE)))
 							parts[ID(r)].ctype = tmp_under;
 					}
 					else
--- a/src/simulation/elements/PBCN.cpp
+++ b/src/simulation/elements/PBCN.cpp
@ -33,7 +33,7 @@ void Element::Element_PBCN()
 	HeatConduct = 251;
 	Description = "Powered breakable clone.";

-	Properties = TYPE_SOLID | PROP_NOCTYPEDRAW;
+	Properties = TYPE_SOLID | PROP_PHOTPASS | PROP_NOCTYPEDRAW;
 	CarriesTypeIn = 1U << FIELD_CTYPE;

 	LowPressure = IPL;
--- a/src/simulation/elements/PCLN.cpp
+++ b/src/simulation/elements/PCLN.cpp
@ -33,7 +33,7 @@ void Element::Element_PCLN()
 	HeatConduct = 251;
 	Description = "Powered clone. When activated, duplicates any particles it touches.";

-	Properties = TYPE_SOLID | PROP_NOCTYPEDRAW;
+	Properties = TYPE_SOLID | PROP_PHOTPASS | PROP_NOCTYPEDRAW;
 	CarriesTypeIn = 1U << FIELD_CTYPE;

 	LowPressure = IPL;
--- a/src/simulation/elements/PHOT.cpp
+++ b/src/simulation/elements/PHOT.cpp
@ -36,7 +36,7 @@ void Element::Element_PHOT()
 	HeatConduct = 251;
 	Description = "Photons. Refracts through glass, scattered by quartz, and color-changed by different elements. Ignites flammable materials.";

-	Properties = TYPE_ENERGY|PROP_LIFE_DEC|PROP_LIFE_KILL_DEC;
+	Properties = TYPE_ENERGY | PROP_PHOTPASS | PROP_LIFE_DEC | PROP_LIFE_KILL_DEC;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
@ -57,6 +57,9 @@ void Element::Element_PHOT()

 static int update(UPDATE_FUNC_ARGS)
 {
+	auto &sd = SimulationData::CRef();
+	auto &elements = sd.elements;
+
 	if (!(parts[i].ctype&0x3FFFFFFF)) {
 		sim->kill_part(i);
 		return 1;
@ -121,7 +124,7 @@ static int update(UPDATE_FUNC_ARGS)
 					sim->create_part(ID(r), x, y, ct_under);

 					//If there's a correct tmp set, use it for ctype
-					if(tmp_under > 0 && ct_under < PT_NUM)
+					if((tmp_under > 0) && (tmp_under < PT_NUM) && (elements[ct_under].CarriesTypeIn & (1U << FIELD_CTYPE)))
 						parts[ID(r)].ctype = tmp_under;
 				}
 				else
--- a/src/simulation/elements/PQRT.cpp
+++ b/src/simulation/elements/PQRT.cpp
@ -32,7 +32,7 @@ void Element::Element_PQRT()
 	HeatConduct = 3;
 	Description = "Powdered quartz, broken form of QRTZ.";

-	Properties = TYPE_PART| PROP_HOT_GLOW;
+	Properties = TYPE_PART | PROP_PHOTPASS | PROP_HOT_GLOW;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/PTNM.cpp
+++ b/src/simulation/elements/PTNM.cpp
@ -238,7 +238,7 @@ static int update(UPDATE_FUNC_ARGS)
 						break;

 					case PT_RSST: // RSST -> BIZR
-						sim->part_change_type(ID(r), x + rx, y + ry, PT_BIZR);
+						sim->create_part(ID(r), x + rx, y + ry, PT_BIZR);
 						break;
 					}
 				}
--- a/src/simulation/elements/QRTZ.cpp
+++ b/src/simulation/elements/QRTZ.cpp
@ -32,7 +32,7 @@ void Element::Element_QRTZ()
 	HeatConduct = 3;
 	Description = "Quartz, breakable mineral. Conducts but becomes brittle at lower temperatures.";

-	Properties = TYPE_SOLID|PROP_HOT_GLOW|PROP_LIFE_DEC;
+	Properties = TYPE_SOLID | PROP_PHOTPASS | PROP_HOT_GLOW | PROP_LIFE_DEC;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/RSSS.cpp
+++ b/src/simulation/elements/RSSS.cpp
@ -33,6 +33,7 @@ void Element::Element_RSSS()
 	Description = "Solidified resist. Blocks pressure and insulates electricity. Liquefies on contact with neutrons.";

 	Properties = TYPE_SOLID|PROP_NEUTPASS;
+	CarriesTypeIn = (1U << FIELD_CTYPE) | (1U << FIELD_TMP);

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/RSST.cpp
+++ b/src/simulation/elements/RSST.cpp
@ -32,7 +32,8 @@ void Element::Element_RSST()
 	HeatConduct = 55;
 	Description = "Resist. Solidifies on contact with photons, is destroyed by electrons and spark.";

-	Properties = TYPE_LIQUID|PROP_CONDUCTS|PROP_LIFE_DEC|PROP_NEUTPASS;
+	Properties = TYPE_LIQUID | PROP_CONDUCTS | PROP_LIFE_DEC | PROP_NEUTPASS | PROP_PHOTPASS;
+	CarriesTypeIn = (1U << FIELD_CTYPE) | (1U << FIELD_TMP);

 	LowPressure = IPL;
 	LowPressureTransition = NT;
@ -60,7 +61,7 @@ int update(UPDATE_FUNC_ARGS)
 			// RSST + GUNP = FIRW
 			if(TYP(r) == PT_GUNP)
 			{
-				sim->part_change_type(i, x, y, PT_FIRW);
+				sim->create_part(i, x, y, PT_FIRW);
 				sim->kill_part(ID(r));
 				return 1;
 			}
@ -68,7 +69,7 @@ int update(UPDATE_FUNC_ARGS)
 			// RSST + BCOL = FSEP
 			if(TYP(r) == PT_BCOL)
 			{
-				sim->part_change_type(i, x, y, PT_FSEP);
+				sim->create_part(i, x, y, PT_FSEP);
 				parts[i].life = 50;
 				sim->kill_part(ID(r));
 				return 1;
@ -80,6 +81,13 @@ int update(UPDATE_FUNC_ARGS)
 				if(parts[ID(r)].ctype != PT_RSST)
 					parts[i].ctype = parts[ID(r)].ctype;
 			}
+
+			// Set RSST tmp from nearby breakable clone
+			if((TYP(r) == PT_BCLN) || (TYP(r) == PT_PBCN))
+			{
+				if(parts[ID(r)].ctype != PT_RSST)
+					parts[i].tmp = parts[ID(r)].ctype;
+			}
 		}
 	}

--- a/src/simulation/elements/SLTW.cpp
+++ b/src/simulation/elements/SLTW.cpp
@ -32,7 +32,7 @@ void Element::Element_SLTW()
 	LatentHeat = 7500;
 	Description = "Saltwater, conducts electricity, difficult to freeze.";

-	Properties = TYPE_LIQUID|PROP_CONDUCTS|PROP_LIFE_DEC|PROP_NEUTPENETRATE;
+	Properties = TYPE_LIQUID | PROP_CONDUCTS | PROP_LIFE_DEC | PROP_NEUTPENETRATE | PROP_PHOTPASS;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/SNOW.cpp
+++ b/src/simulation/elements/SNOW.cpp
@ -35,6 +35,7 @@ void Element::Element_SNOW()
 	Description = "Light particles. Created when ICE breaks under pressure.";

 	Properties = TYPE_PART|PROP_NEUTPASS;
+	CarriesTypeIn = 1U << FIELD_CTYPE;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
--- a/src/simulation/elements/WATR.cpp
+++ b/src/simulation/elements/WATR.cpp
@ -33,7 +33,7 @@ void Element::Element_WATR()
 	LatentHeat = 7500;
 	Description = "Water. Conducts electricity, freezes, and extinguishes fires.";

-	Properties = TYPE_LIQUID|PROP_CONDUCTS|PROP_LIFE_DEC|PROP_NEUTPASS;
+	Properties = TYPE_LIQUID | PROP_CONDUCTS | PROP_LIFE_DEC | PROP_NEUTPASS | PROP_PHOTPASS;

 	LowPressure = IPL;
 	LowPressureTransition = NT;
Author	SHA1	Message	Date
Saveliy Skresanov	6ce8e10adb	Add a limit on the number of SPARK, LFLARE and FLARE effects drawn in one frame.	2024-04-22 22:49:00 +07:00
jacob1	47384c5572	ICE contains arbitrary elements in ctype as well and should track this in saves	2024-04-21 00:11:55 -04:00
jacob1	de345a85a1	Fix "missing custom elements" warnings when loading saves with RSST/RSSS; mark SNOW as carrying ctype as well	2024-04-19 23:31:20 -04:00
Tamás Bálint Misius	6de252eb34	Check starcatcher credentials early It's infuriating when the entire workflow fails at the publish stage because Discord pretends to have markdown.	2024-04-14 20:36:05 +02:00
Tamás Bálint Misius	b39f3c7f55	Disable --backend=vs build Someone please give microsoft engineers a lecture on how to use computers.	2024-04-14 20:34:34 +02:00
Tamás Bálint Misius	58c0ab4747	Fix more &vec[0] problems	2024-04-13 22:32:43 +02:00
Tamás Bálint Misius	73daf67c34	Add elem.PROP_BLACK back for compat Of course it still does nothing.	2024-04-13 19:08:19 +02:00
Simon Robertshaw	3edb8c4233	Clamp window position/size to graphics surface	2024-04-12 18:14:19 +01:00
Saveliy Skresanov	351dc6ec87	Make dropdowns near the top of the screen go down.	2024-04-12 23:55:34 +07:00
Saveliy Skresanov	0cfb91ce86	Add day/week/month/year selector in the search.	2024-04-12 22:50:55 +07:00
Saveliy Skresanov	efeac4fd8a	Make "being transparent to photons" a property PROP_PHOTPASS.	2024-04-10 21:48:51 +07:00
Simon Robertshaw	36619df4f4	Revert "Remove `Renderer` field from GraphicsFunContext" This reverts commit `9f02999947` & `2c55a8a9d9`	2024-04-07 16:31:10 +01:00
Simon Robertshaw	9f02999947	Remove `Renderer` field from GraphicsFunContext - Only decorationsEnable & blackDecorations were ever read, graphics update functions shouldn't really be aware of the renderer. - `sim` should ideally not be there either, but `luaGraphicsWrapper` has more going on to sort out - Re-format previous commit with tabs instead of spaces	2024-04-07 10:00:08 +01:00
Simon Robertshaw	2c55a8a9d9	Remove `Renderer` field from GraphicsFunContext - Only decorationsEnable & blackDecorations were ever read, graphics update functions shouldn't really be aware of the renderer. - `sim` should ideally not be there either, but `luaGraphicsWrapper` has more going on to sort out	2024-04-07 00:17:48 +01:00
Saveliy Skresanov	1a0eb73ea0	Use create_part in resist reactions, and set CarriesCtypeIn for RSSS.	2024-04-04 22:20:14 +07:00
Saveliy Skresanov	f8873debc6	Fix RSST/RSSS not respecting the CarriesCtypeIn field. Reset GEL's tmp field when it turns into RSST.	2024-04-04 22:10:58 +07:00
Tamás Bálint Misius	51f714de0f	Stop scrolling in ScrollPanels on mousedown The goal was to let finger flicks that didn't qualify as panning commands cancel momentum scrolling. The final effect is that any click does, which is fine.	2024-04-03 13:40:20 +02:00
jacob1	e371d6345b	Update build numbers (v98.2.365)	2024-04-01 19:54:39 -04:00
jacob1	e55fc8703a	The squirrel infestation problem is mostly resolved This reverts commits `5e8a28b946`, `e8c24e7e23`, `e8c24e7e23`	2024-04-01 19:45:14 -04:00
jacob1	40e2e4a62a	Fix text cutoff issues in save title and search error message Save title can now overlap with the vote buttons again. It doesn't look great, but reorganizing the preview view is a task for a later day. Save titles this long are rare.	2024-04-01 12:57:19 -04:00
jacob1	e9fdb254af	Update version numbers	2024-03-31 19:48:12 -04:00
jacob1	5e8a28b946	Option to set the max amount of sounds that will play at once, between 0-999	2024-03-31 19:42:28 -04:00
jacob1	a53595ce68	coolcats.patch (patch courtesy of Simon)	2024-03-31 11:20:08 -04:00
catsoften	e8c24e7e23	Add squir... sound. Add sound	2024-03-30 22:33:13 -04:00
jacob1	7edc413cdc	Update build number	2024-03-26 20:53:34 -04:00
Tamás Bálint Misius	53b9b0e286	Fix gravity zones not being drawn in some cases Namely, gravity zones would be rendered when the wrong wall (i.e. not Gravity wall) was selected if custom tools were present in the SC_WALL menu section. This was because their rendering was tied to a tool index into the SC_WALL menu section, rather than to a tool identifier.	2024-03-25 20:54:45 +01:00
Tamás Bálint Misius	99cd354a16	Fix dialuges looping infinitely in some cases Namely, when no completion callback is specified, they use themselves, of all things, as their completion callback, because lua_gettop returns 0 and somehow Lua is ok with that stack index and thinks it refers to the function being executed.	2024-03-25 20:49:00 +01:00
Tamás Bálint Misius	d56e8387cf	Fix crash upon selecting a stamp too quickly SaveButton relies on the SaveFile/SaveInfo passed to it at construction being alive until its destruction, or at least while it's being ticked (while its Tick is being called). While SaveButtons are owned by views, SaveFiles/SaveInfos associated with them are owned by models, so models need to immediately notify views (their observers) of changes made to SaveFiles/SaveInfos, or otherwise prevent views (and thus SaveButtons) from accessing stale SaveFile/SaveInfo pointers. The online save browser model (SearchModel) correctly notifies its observer (SearchView) about changes to its list of SaveInfos. The local save browser (FileBrowserActivity) is not MVC and simply either fully exits when its SaveFile list changes, or it cleans up its SaveButtons beforehand. The stamp browser model (LocalBrowerModel), however, would make changes to its SaveFile list without notifying its observer (LocalBrowserView) when selecting a stamp, so the latter might tick its SaveButtons after SaveFiles associated with them had already been cleaned up. This commit adds the missing notification. The crash would manifest when the SaveFile associated with a stamp was accessed for the GameSave it owned to be sent off for rendering with ThumbnailRendererTask.	2024-03-24 12:48:15 +01:00
Tamás Bálint Misius	c1c1daa9e5	Allow exporting Lua symbols Which optionally enables loading Lua shared modules from within even static TPT. Not that anyone actually needs this. This currently can't work on Windows because DLLs there import symbols by [module name, symbol name] rather than just symbol name. One could in theory export Lua symbols from TPT (I don't know the exact MSVC hack this would require, .def files?) and place a lua51.dll next to the executable that just re-exports them, see https://learn.microsoft.com/en-us/cpp/build/reference/exports?view=msvc-170 , but I've yet to try this.	2024-03-24 08:37:38 +01:00
Tamás Bálint Misius	bfdfebc1d5	Remove unused MD5 code	2024-03-24 08:27:06 +01:00
jacob1	502df57cae	Fix local saves being sorted Z-A instead of A-Z	2024-03-23 23:41:41 -04:00
jacob1	a0ba5f5398	Fix some label cutoff and component overlap bugs Profile Viewer: a few "Not Provided" labels were cutoff. The score labels overlapped with the scrollbar and prevented clicking on it. Save Preview: Views label cutoff on saves with over 10M views (aka only id:2198). authorDate label cutoff on saves with really long usernames. This one I "fixed" by making it overlap again like it used to. It only affects a few 2nd and 3rd page saves. Options UI: Fix ambient air temp label overlapping with textbox. Fix all checkbox secondary desc labels overlapping with checkbox itself. I "fixed" this by adding the checkbox after the label so that clicks take priority, rather than actually fixing the overlap.	2024-03-23 17:26:34 -04:00
jacob1	178519dbb0	Call ren->clearScreen() in renderer if save is invalid, fixes pixel garbage appearing in final thumbnail	2024-03-23 16:10:46 -04:00
Tamás Bálint Misius	bb471e63e1	Fix panels forwarding clicks from anywhere Very similar to `ab28f93753`. Broken by `69e0a8b0aa` where I added an extra MouseDownInside check to the OnMouseDown (used to be OnMouseClick) of every component except that of sliders AND apparently panels, great.	2024-03-18 18:05:28 +01:00
Tamás Bálint Misius	4b866c409a	Move unlisted stamps to the back Rather than to the front. It's nice to immediately see stamps that you haven't seen in years but it's even nicer if your most recently used stamps stay easily accessible.	2024-03-18 12:25:14 +01:00
jacob1	3fb356e2a9	Fix renderer crashing due to SimulationData not being instantiated early enough	2024-03-17 23:05:31 -04:00
jacob1	8452d96bf6	Fix update prompt showing up when no update is available if logged out and using the beta channel	2024-03-17 18:16:53 -04:00
jacob1	eef8943a3c	Fix large screen prompt not showing on first run desktopWidth/desktopHeight were initialized only at the end of SDLOpen, after we checked if larger scales were supported. Need to initialize the window first, then recreate the window after if the scale can be larger. The window won't be centered, but otherwise it works.	2024-03-17 18:15:54 -04:00
jacob1	5160f4ad33	Update version numbers and README	2024-03-17 16:29:14 -04:00
jacob1	7870ec56a3	Limit saves with ETRD with .tmp or .tmp2 set to 98.0	2024-03-17 16:13:56 -04:00
jacob1	16f50b808d	Add limit onto various textboxes, now that textbox width no longer artificially limits it Save Name is limited to 50 characters by the db column, so stop it there Ambient Air Temp glitches out when it's too long, so limit to 9 Limit profile location to 40 to prevent spam / abuse Limit tags to 16 because that's the max the server accepts	2024-03-17 15:14:22 -04:00
jacob1	aa8ee76fbb	Saves with RSST and RSSS are now restricted to 98.0	2024-03-17 14:32:28 -04:00
jacob1	228d559ccd	Replace b_strip with strip in github actions script	2024-03-15 22:42:27 -04:00
jacob1	758d34c4eb	Snapshot 361	2024-03-15 22:12:26 -04:00
jacob1	596e6cece1	Add DECOSPACE_ constants	2024-03-13 21:22:12 -04:00
jacob1	3a3a8c1cc3	Fix save history button not working except on your own saves	2024-03-06 23:11:00 -05:00
Tamás Bálint Misius	f47d0a9828	Make emscripten snapshots use starcatcher as the backend	2024-03-06 22:06:19 +01:00
Tamás Bálint Misius	7cd684ccfe	Unhardcode powdertoy.co.uk from most places Namely, everywhere except in the network part (first line) of the intro text, since that should be customized more extensively by a client+server developer.	2024-03-06 22:03:51 +01:00
Tamás Bálint Misius	82bcb0ef9e	Fix element buttons missing from element search Visible since `c3cd4f1691`, which made element search scrollable. The last row of buttons was only shown if it had exactly as many buttons as many fit.	2024-03-05 16:10:07 +01:00
Tamás Bálint Misius	c85ebe4a0a	Fix tooltips in element search Visible since `c3cd4f1691`, which made element search scrollable. They would behave as if the scroll panel was never actually scrolled, i.e. tooltips might be shown that belonged to buttons far outside the visible part of the panel's inner area. This was because Panel invoked the OnMouseHover of its children wrong, without taking scrolling into account.	2024-03-05 16:09:34 +01:00
Tamás Bálint Misius	ab28f93753	Fix sliders accepting clicks from anywhere Broken by `69e0a8b0aa` where I added an extra MouseDownInside check to the OnMouseDown (used to be OnMouseClick) of every component except that of sliders.	2024-03-03 19:35:12 +01:00