/**
 * Powder Toy - Main source
 *
 * Copyright (c) 2008 - 2011 Stanislaw Skowronek.
 * Copyright (c) 2010 - 2011 Simon Robertshaw
 * Copyright (c) 2010 - 2011 Skresanov Savely
 * Copyright (c) 2010 - 2011 Bryan Hoyle
 * Copyright (c) 2010 - 2011 Nathan Cousins
 * Copyright (c) 2010 - 2011 cracker64
 * Copyright (c) 2011 jacksonmj
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <defines.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <SDL/SDL.h>
#include <SDL/SDL_audio.h>
#include <bzlib.h>
#include <time.h>
#include <pthread.h>

#ifdef WIN32
#include <direct.h>
#else
#include <sys/stat.h>
#include <unistd.h>
#endif

#include <misc.h>
#include <font.h>
#include <powder.h>
#include "gravity.h"
#include <graphics.h>
#include <powdergraphics.h>
#include <http.h>
#include <md5.h>
#include <update.h>
#include <hmap.h>
#include <air.h>
#include <icon.h>
#include <console.h>
#ifdef LUACONSOLE
#include "luaconsole.h"
#endif
#include "save.h"

pixel *vid_buf;

#define NUM_SOUNDS 2
struct sample {
	Uint8 *data;
	Uint32 dpos;
	Uint32 dlen;
} sounds[NUM_SOUNDS];

void mixaudio(void *unused, Uint8 *stream, int len)
{
	int i;
	Uint32 amount;

	for ( i=0; i<NUM_SOUNDS; ++i ) {
		amount = (sounds[i].dlen-sounds[i].dpos);
		if ( amount > len ) {
			amount = len;
		}
		SDL_MixAudio(stream, &sounds[i].data[sounds[i].dpos], amount, SDL_MIX_MAXVOLUME);
		sounds[i].dpos += amount;
	}
}

//plays a .wav file (sounds must be enabled)
void play_sound(char *file)
{
	int index;
	SDL_AudioSpec wave;
	Uint8 *data;
	Uint32 dlen;
	SDL_AudioCVT cvt;

	if (!sound_enable) return;

	/* Look for an empty (or finished) sound slot */
	for ( index=0; index<NUM_SOUNDS; ++index ) {
		if ( sounds[index].dpos == sounds[index].dlen ) {
			break;
		}
	}
	if ( index == NUM_SOUNDS )
		return;

	/* Load the sound file and convert it to 16-bit stereo at 22kHz */
	if ( SDL_LoadWAV(file, &wave, &data, &dlen) == NULL ) {
		fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError());
		return;
	}
	SDL_BuildAudioCVT(&cvt, wave.format, wave.channels, wave.freq,
	                  AUDIO_S16,   2,             22050);
	cvt.buf = malloc(dlen*cvt.len_mult);
	memcpy(cvt.buf, data, dlen);
	cvt.len = dlen;
	SDL_ConvertAudio(&cvt);
	SDL_FreeWAV(data);

	/* Put the sound data in the slot (it starts playing immediately) */
	if ( sounds[index].data ) {
		free(sounds[index].data);
	}
	SDL_LockAudio();
	sounds[index].data = cvt.buf;
	sounds[index].dlen = cvt.len_cvt;
	sounds[index].dpos = 0;
	SDL_UnlockAudio();
}

static const char *it_msg =
    "\blThe Powder Toy - Version " MTOS(SAVE_VERSION) "." MTOS(MINOR_VERSION) " - http://powdertoy.co.uk, irc.freenode.net #powder\n"
    "\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\x7F\n"
    "\n"
    "\bgControl+C/V/X are Copy, Paste and cut respectively.\n"
    "\bgTo choose a material, hover over one of the icons on the right, it will show a selection of elements in that group.\n"
    "\bgPick your material from the menu using mouse left/right buttons.\n"
    "Draw freeform lines by dragging your mouse left/right button across the drawing area.\n"
    "Shift+drag will create straight lines of particles.\n"
    "Ctrl+drag will result in filled rectangles.\n"
    "Ctrl+Shift+click will flood-fill a closed area.\n"
    "Ctrl+Z will act as Undo.\n"
    "Middle click or Alt+Click to \"sample\" the particles.\n"
    "\n\boUse 'Z' for a zoom tool. Click to make the drawable zoom window stay around. Use the wheel to change the zoom strength\n"
    "Use 'S' to save parts of the window as 'stamps'.\n"
    "'L' will load the most recent stamp, 'K' shows a library of stamps you saved.\n"
    "'C' will cycle the display mode (Fire, Blob, Velocity, etc.). The numbers on the keyboard do the same\n"
    "Use the mouse scroll wheel to change the tool size for particles.\n"
    "The spacebar can be used to pause physics.\n"
    "'P' will take a screenshot and save it into the current directory.\n"
    "\n"
    "Contributors: \bgStanislaw K Skowronek (\brhttp://powder.unaligned.org\bg, \bbirc.unaligned.org #wtf\bg),\n"
    "\bgSimon Robertshaw, Skresanov Savely, cracker64, Catelite, Bryan Hoyle, Nathan Cousins, jacksonmj,\n"
	"\bgLieuwe Mosch, Anthony Boot, Matthew \"me4502\", MaksProg, jacob1\n"
    "\n"
    "\bgTo use online features such as saving, you need to register at: \brhttp://powdertoy.co.uk/Register.html\n"
	"\n"
	"\bt" MTOS(SAVE_VERSION) "." MTOS(MINOR_VERSION) "." MTOS(BUILD_NUM) " "
#ifdef X86
	"X86 "
#endif
#ifdef X86_SSE
	"X86_SSE "
#endif
#ifdef X86_SSE2
	"X86_SSE2 "
#endif
#ifdef X86_SSE3
	"X86_SSE3 "
#endif
#ifdef LIN32
	"LIN32 "
#endif
#ifdef LIN64
	"LIN64 "
#endif
#ifdef WIN32
	"WIN32 "
#endif
#ifdef MACOSX
	"MACOSX "
#endif
#ifdef LUACONSOLE
	"LUACONSOLE "
#endif
#ifdef GRAVFFT
	"GRAVFFT "
#endif
#ifdef REALISTIC
	"REALISTIC"
#endif
    ;

typedef struct
{
	int start, inc;
	pixel *vid;
} upstruc;

static const char *old_ver_msg_beta = "A new beta is available - click here!";
static const char *old_ver_msg = "A new version is available - click here!";
char new_message_msg[255];
float mheat = 0.0f;

int saveURIOpen = 0;

int do_open = 0;
int sys_pause = 0;
int sys_shortcuts = 1;
int legacy_enable = 0; //Used to disable new features such as heat, will be set by save.
int aheat_enable; //Ambient heat
int decorations_enable = 1;
int hud_enable = 1;
int active_menu = 0;
int framerender = 0;
int pretty_powder = 0;
int amd = 1;
int FPSB = 0;
int MSIGN =-1;
int frameidx = 0;
//int CGOL = 0;
//int GSPEED = 1;//causes my .exe to crash..
int sound_enable = 0;
int loop_time = 0;

int debug_flags = 0;
int debug_perf_istart = 1;
int debug_perf_iend = 0;
long debug_perf_frametime[DEBUG_PERF_FRAMECOUNT];
long debug_perf_partitime[DEBUG_PERF_FRAMECOUNT];
long debug_perf_time = 0;

sign signs[MAXSIGNS];

int numCores = 4;

int core_count()
{
	int numCPU = 1;
#ifdef MT
#ifdef WIN32
	SYSTEM_INFO sysinfo;
	GetSystemInfo( &sysinfo );
	numCPU = sysinfo.dwNumberOfProcessors;
#else
#ifdef MACOSX
	numCPU = 4;
#else
	numCPU = sysconf( _SC_NPROCESSORS_ONLN );
#endif
#endif

	printf("Cpus: %d\n", numCPU);
	if (numCPU>1)
		printf("Multithreading enabled\n");
	else
		printf("Multithreading disabled\n");
#endif
	return numCPU;
}

int mousex = 0, mousey = 0;  //They contain mouse position
int kiosk_enable = 0;

void sdl_seticon(void)
{
#ifdef WIN32
	//SDL_Surface *icon = SDL_CreateRGBSurfaceFrom(app_icon_w32, 32, 32, 32, 128, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
	//SDL_WM_SetIcon(icon, NULL/*app_icon_mask*/);
#else
#ifdef MACOSX
	//SDL_Surface *icon = SDL_CreateRGBSurfaceFrom(app_icon_w32, 32, 32, 32, 128, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
	//SDL_WM_SetIcon(icon, NULL/*app_icon_mask*/);
#else
	SDL_Surface *icon = SDL_CreateRGBSurfaceFrom(app_icon, 16, 16, 32, 64, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
	SDL_WM_SetIcon(icon, NULL/*app_icon_mask*/);
#endif
#endif
}

int frame_idx=0;
void dump_frame(pixel *src, int w, int h, int pitch)
{
	char frame_name[32];
	int j,i;
	unsigned char c[3];
	FILE *f;
	sprintf(frame_name,"frame%04d.ppm",frame_idx);
	f=fopen(frame_name,"wb");
	fprintf(f,"P6\n%d %d\n255\n",w,h);
	for (j=0; j<h; j++)
	{
		for (i=0; i<w; i++)
		{
			c[0] = PIXR(src[i]);
			c[1] = PIXG(src[i]);
			c[2] = PIXB(src[i]);
			fwrite(c,3,1,f);
		}
		src+=pitch;
	}
	fclose(f);
	frame_idx++;
}

/***********************************************************
 *                    STATE MANAGEMENT                     *
 ***********************************************************/

void clear_sim(void)
{
	int i, x, y;
	memset(bmap, 0, sizeof(bmap));
	memset(emap, 0, sizeof(emap));
	memset(signs, 0, sizeof(signs));
	MSIGN = -1;
	memset(parts, 0, sizeof(particle)*NPART);
	for (i=0; i<NPART-1; i++)
		parts[i].life = i+1;
	parts[NPART-1].life = -1;
	pfree = 0;
	parts_lastActiveIndex = 0;
	memset(pmap, 0, sizeof(pmap));
	memset(pv, 0, sizeof(pv));
	memset(vx, 0, sizeof(vx));
	memset(vy, 0, sizeof(vy));
	memset(fvx, 0, sizeof(fvx));
	memset(fvy, 0, sizeof(fvy));
	memset(photons, 0, sizeof(photons));
	memset(wireless, 0, sizeof(wireless));
	memset(gol2, 0, sizeof(gol2));
	memset(portalp, 0, sizeof(portalp));
	memset(fighters, 0, sizeof(fighters));
	fighcount = 0;
	ISSPAWN1 = ISSPAWN2 = 0;
	player.spwn = 0;
	player2.spwn = 0;
	memset(pers_bg, 0, (XRES+BARSIZE)*YRES*PIXELSIZE);
	memset(fire_r, 0, sizeof(fire_r));
	memset(fire_g, 0, sizeof(fire_g));
	memset(fire_b, 0, sizeof(fire_b));
	if(gravmask)
		memset(gravmask, 0xFFFFFFFF, (XRES/CELL)*(YRES/CELL)*sizeof(unsigned));
	if(gravy)
		memset(gravy, 0, (XRES/CELL)*(YRES/CELL)*sizeof(float));
	if(gravx)
		memset(gravx, 0, (XRES/CELL)*(YRES/CELL)*sizeof(float));
	if(gravp)
		memset(gravp, 0, (XRES/CELL)*(YRES/CELL)*sizeof(float));
	for(x = 0; x < XRES/CELL; x++){
		for(y = 0; y < YRES/CELL; y++){
			hv[y][x] = 273.15f+22.0f; //Set to room temperature
		}
	}
}

// stamps library

stamp stamps[STAMP_MAX];//[STAMP_X*STAMP_Y];

int stamp_count = 0;

unsigned last_time=0, last_name=0;
void stamp_gen_name(char *fn)
{
	unsigned t=(unsigned)time(NULL);

	if (last_time!=t)
	{
		last_time=t;
		last_name=0;
	}
	else
		last_name++;

	sprintf(fn, "%08x%02x", last_time, last_name);
}

void stamp_update(void)
{
	FILE *f;
	int i;
	f=fopen("stamps" PATH_SEP "stamps.def", "wb");
	if (!f)
		return;
	for (i=0; i<STAMP_MAX; i++)
	{
		if (!stamps[i].name[0])
			break;
		if (stamps[i].dodelete!=1)
		{
			fwrite(stamps[i].name, 1, 10, f);
		}
		else
		{
			char name[30] = {0};
			sprintf(name,"stamps%s%s.stm",PATH_SEP,stamps[i].name);
			remove(name);
		}
	}
	fclose(f);
}

void stamp_gen_thumb(int i)
{
	char fn[64];
	void *data;
	int size, factor_x, factor_y;
	pixel *tmp;

	if (stamps[i].thumb)
	{
		free(stamps[i].thumb);
		stamps[i].thumb = NULL;
	}

	sprintf(fn, "stamps" PATH_SEP "%s.stm", stamps[i].name);
	data = file_load(fn, &size);

	if (data)
	{
		stamps[i].thumb = prerender_save(data, size, &(stamps[i].thumb_w), &(stamps[i].thumb_h));
		if (stamps[i].thumb && (stamps[i].thumb_w>XRES/GRID_S || stamps[i].thumb_h>YRES/GRID_S))
		{
			factor_x = ceil((float)stamps[i].thumb_w/(float)(XRES/GRID_S));
			factor_y = ceil((float)stamps[i].thumb_h/(float)(YRES/GRID_S));
			if (factor_y > factor_x)
				factor_x = factor_y;
			tmp = rescale_img(stamps[i].thumb, stamps[i].thumb_w, stamps[i].thumb_h, &(stamps[i].thumb_w), &(stamps[i].thumb_h), factor_x);
			free(stamps[i].thumb);
			stamps[i].thumb = tmp;
		}
	}

	free(data);
}

int clipboard_ready = 0;
void *clipboard_data = 0;
int clipboard_length = 0;

void stamp_save(int x, int y, int w, int h)
{
	FILE *f;
	int n;
	char fn[64], sn[16];
	void *s=build_save(&n, x, y, w, h, bmap, vx, vy, pv, fvx, fvy, signs, parts);
	if (!s)
		return;

#ifdef WIN32
	_mkdir("stamps");
#else
	mkdir("stamps", 0755);
#endif

	stamp_gen_name(sn);
	sprintf(fn, "stamps" PATH_SEP "%s.stm", sn);

	f = fopen(fn, "wb");
	if (!f)
		return;
	fwrite(s, n, 1, f);
	fclose(f);

	free(s);

	if (stamps[STAMP_MAX-1].thumb)
		free(stamps[STAMP_MAX-1].thumb);
	memmove(stamps+1, stamps, sizeof(struct stamp)*(STAMP_MAX-1));
	memset(stamps, 0, sizeof(struct stamp));
	if (stamp_count<STAMP_MAX)
		stamp_count++;

	strcpy(stamps[0].name, sn);
	stamp_gen_thumb(0);

	stamp_update();
}

void *stamp_load(int i, int *size)
{
	void *data;
	char fn[64];
	struct stamp tmp;

	if (!stamps[i].thumb || !stamps[i].name[0])
		return NULL;

	sprintf(fn, "stamps" PATH_SEP "%s.stm", stamps[i].name);
	data = file_load(fn, size);
	if (!data)
		return NULL;

	if (i>0)
	{
		memcpy(&tmp, stamps+i, sizeof(struct stamp));
		memmove(stamps+1, stamps, sizeof(struct stamp)*i);
		memcpy(stamps, &tmp, sizeof(struct stamp));

		stamp_update();
	}

	return data;
}

void stamp_init(void)
{
	int i;
	FILE *f;

	memset(stamps, 0, sizeof(stamps));

	f=fopen("stamps" PATH_SEP "stamps.def", "rb");
	if (!f)
		return;
	for (i=0; i<STAMP_MAX; i++)
	{
		fread(stamps[i].name, 1, 10, f);
		if (!stamps[i].name[0])
			break;
		stamp_count++;
		stamp_gen_thumb(i);
	}
	fclose(f);
}

void del_stamp(int d)
{
	stamps[d].dodelete = 1;
	stamp_update();
	stamp_count = 0;
	stamp_init();
}

void thumb_cache_inval(char *id);

char *thumb_cache_id[THUMB_CACHE_SIZE];
void *thumb_cache_data[THUMB_CACHE_SIZE];
int thumb_cache_size[THUMB_CACHE_SIZE];
int thumb_cache_lru[THUMB_CACHE_SIZE];

void thumb_cache_inval(char *id)
{
	int i,j;
	for (i=0; i<THUMB_CACHE_SIZE; i++)
		if (thumb_cache_id[i] && !strcmp(id, thumb_cache_id[i]))
			break;
	if (i >= THUMB_CACHE_SIZE)
		return;
	free(thumb_cache_id[i]);
	free(thumb_cache_data[i]);
	thumb_cache_id[i] = NULL;
	for (j=0; j<THUMB_CACHE_SIZE; j++)
		if (thumb_cache_lru[j] > thumb_cache_lru[i])
			thumb_cache_lru[j]--;
}
void thumb_cache_add(char *id, void *thumb, int size)
{
	int i,m=-1,j=-1;
	thumb_cache_inval(id);
	for (i=0; i<THUMB_CACHE_SIZE; i++)
	{
		if (!thumb_cache_id[i])
			break;
		if (thumb_cache_lru[i] > m)
		{
			m = thumb_cache_lru[i];
			j = i;
		}
	}
	if (i >= THUMB_CACHE_SIZE)
	{
		thumb_cache_inval(thumb_cache_id[j]);
		i = j;
	}
	for (j=0; j<THUMB_CACHE_SIZE; j++)
		thumb_cache_lru[j] ++;
	thumb_cache_id[i] = mystrdup(id);
	thumb_cache_data[i] = malloc(size);
	memcpy(thumb_cache_data[i], thumb, size);
	thumb_cache_size[i] = size;
	thumb_cache_lru[i] = 0;
}
int thumb_cache_find(char *id, void **thumb, int *size)
{
	int i,j;
	for (i=0; i<THUMB_CACHE_SIZE; i++)
		if (thumb_cache_id[i] && !strcmp(id, thumb_cache_id[i]))
			break;
	if (i >= THUMB_CACHE_SIZE)
		return 0;
	for (j=0; j<THUMB_CACHE_SIZE; j++)
		if (thumb_cache_lru[j] < thumb_cache_lru[i])
			thumb_cache_lru[j]++;
	thumb_cache_lru[i] = 0;
	*thumb = malloc(thumb_cache_size[i]);
	*size = thumb_cache_size[i];
	memcpy(*thumb, thumb_cache_data[i], *size);
	return 1;
}

char http_proxy_string[256] = "";

unsigned char last_major=0, last_minor=0, last_build=0, update_flag=0;

char *tag = "(c) 2008-9 Stanislaw Skowronek";
int itc = 0;
char itc_msg[64] = "[?]";

char my_uri[] = "http://" SERVER "/Update.api?Action=Download&Architecture="
#if defined WIN32
                "Windows32"
#elif defined LIN32
                "Linux32"
#elif defined LIN64
                "Linux64"
#elif defined MACOSX
                "MacOSX"
#else
                "Unknown"
#endif
                "&InstructionSet="
#if defined X86_SSE3
                "SSE3"
#elif defined X86_SSE2
                "SSE2"
#elif defined X86_SSE
                "SSE"
#else
                "SSE"
#endif
                ;

int set_scale(int scale, int kiosk){
	int old_scale = sdl_scale, old_kiosk = kiosk_enable;
	sdl_scale = scale;
	kiosk_enable = kiosk;
	if (!sdl_open())
	{
		sdl_scale = old_scale;
		kiosk_enable = old_kiosk;
		sdl_open();
		return 0;
	}
	return 1;
}

#ifdef RENDERER
int main(int argc, char *argv[])
{
	pixel *vid_buf = calloc((XRES+BARSIZE)*(YRES+MENUSIZE), PIXELSIZE);
	int load_size, i=0, j=0;
	void *load_data = file_load(argv[1], &load_size);
	unsigned char c[3];
	char ppmfilename[256], ptifilename[256], ptismallfilename[256];
	FILE *f;
	
	colour_mode = COLOUR_DEFAULT;
	init_display_modes();
	TRON_init_graphics();

	sys_pause = 1;
	parts = calloc(sizeof(particle), NPART);
	for (i=0; i<NPART-1; i++)
		parts[i].life = i+1;
	parts[NPART-1].life = -1;
	pfree = 0;

	pers_bg = calloc((XRES+BARSIZE)*YRES, PIXELSIZE);
	
	prepare_alpha(CELL, 1.0f);
	prepare_graphicscache();
	flm_data = generate_gradient(flm_data_colours, flm_data_pos, flm_data_points, 200);
	plasma_data = generate_gradient(plasma_data_colours, plasma_data_pos, plasma_data_points, 200);
	
	player.elem = player2.elem = PT_DUST;
	player.frames = player2.frames = 0;

	sprintf(ppmfilename, "%s.ppm", argv[2]);
	sprintf(ptifilename, "%s.pti", argv[2]);
	sprintf(ptismallfilename, "%s-small.pti", argv[2]);
	
	if(load_data && load_size){
		int parsestate = 0;
		//parsestate = parse_save(load_data, load_size, 1, 0, 0);
		parsestate = parse_save(load_data, load_size, 1, 0, 0, bmap, vx, vy, pv, fvx, fvy, signs, parts, pmap);
		
		for(i=0; i<30; i++){
			memset(vid_buf, 0, (XRES+BARSIZE)*YRES*PIXELSIZE);
			draw_walls(vid_buf);
			update_particles(vid_buf);
			render_parts(vid_buf);
			render_fire(vid_buf);
		}
		
		render_signs(vid_buf);
		
		if(parsestate>0){
			//return 0;
			info_box(vid_buf, "Save file invalid or from newer version");
		}

		//Save PTi images
		char * datares = NULL, *scaled_buf;
		int res = 0, sw, sh;
		datares = ptif_pack(vid_buf, XRES, YRES, &res);
		if(datares!=NULL){
			f=fopen(ptifilename, "wb");
			fwrite(datares, res, 1, f);
			fclose(f);
			free(datares);
			datares = NULL;
		}
		scaled_buf = resample_img(vid_buf, XRES, YRES, XRES/GRID_Z, YRES/GRID_Z);
		datares = ptif_pack(scaled_buf, XRES/GRID_Z, YRES/GRID_Z, &res);
		if(datares!=NULL){
			f=fopen(ptismallfilename, "wb");
			fwrite(datares, res, 1, f);
			fclose(f);
			free(datares);
			datares = NULL;
		}
		free(scaled_buf);
		//Save PPM image
		f=fopen(ppmfilename, "wb");
		fprintf(f,"P6\n%d %d\n255\n",XRES,YRES);
		for (j=0; j<YRES; j++)
		{
			for (i=0; i<XRES; i++)
			{
				c[0] = PIXR(vid_buf[i]);
				c[1] = PIXG(vid_buf[i]);
				c[2] = PIXB(vid_buf[i]);
				fwrite(c,3,1,f);
			}
			vid_buf+=XRES+BARSIZE;
		}
		fclose(f);
		
		return 1;
	}
	
	return 0;
}
#else
int main(int argc, char *argv[])
{
	pixel *part_vbuf; //Extra video buffer
	pixel *part_vbuf_store;
	char uitext[512] = "";
	char heattext[256] = "";
	char coordtext[128] = "";
	int currentTime = 0;
	int FPS = 0, pastFPS = 0, elapsedTime = 0; 
	void *http_ver_check, *http_session_check = NULL;
	char *ver_data=NULL, *check_data=NULL, *tmp;
	//char console_error[255] = "";
	int result, i, j, bq, bc = 0, do_check=0, do_s_check=0, old_version=0, http_ret=0,http_s_ret=0, major, minor, buildnum, is_beta = 0, old_ver_len, new_message_len=0;
#ifdef INTERNAL
	int vs = 0;
#endif
	int wavelength_gfx = 0;
	int x, y, line_x, line_y, b = 0, sl=1, sr=0, su=0, c, lb = 0, lx = 0, ly = 0, lm = 0;//, tx, ty;
	int da = 0, dae = 0, db = 0, it = 2047, mx, my, bsx = 2, bsy = 2, quickoptions_tooltip_fade_invert, it_invert = 0;
	float nfvx, nfvy;
	int load_mode=0, load_w=0, load_h=0, load_x=0, load_y=0, load_size=0;
	void *load_data=NULL;
	pixel *load_img=NULL;//, *fbi_img=NULL;
	int save_mode=0, save_x=0, save_y=0, save_w=0, save_h=0, copy_mode=0;
	unsigned int rgbSave = PIXRGB(127,0,0);
	SDL_AudioSpec fmt;
	int username_flash = 0, username_flash_t = 1;
	int saveOpenError = 0;
#ifdef PTW32_STATIC_LIB
    pthread_win32_process_attach_np();
    pthread_win32_thread_attach_np();
#endif
	limitFPS = 60;
	vid_buf = calloc((XRES+BARSIZE)*(YRES+MENUSIZE), PIXELSIZE);
	part_vbuf = calloc((XRES+BARSIZE)*(YRES+MENUSIZE), PIXELSIZE); //Extra video buffer
	part_vbuf_store = part_vbuf;
	pers_bg = calloc((XRES+BARSIZE)*YRES, PIXELSIZE);

	gravity_init();
	GSPEED = 1;

	/* Set 16-bit stereo audio at 22Khz */
	fmt.freq = 22050;
	fmt.format = AUDIO_S16;
	fmt.channels = 2;
	fmt.samples = 512;
	fmt.callback = mixaudio;
	fmt.userdata = NULL;

#ifdef MT
	numCores = core_count();
#endif
//TODO: Move out version stuff
	menu_count();
	parts = calloc(sizeof(particle), NPART);
	cb_parts = calloc(sizeof(particle), NPART);
	init_can_move();
	clear_sim();
	
#ifdef LUACONSOLE
	luacon_open();
#endif
	
	colour_mode = COLOUR_DEFAULT;
	init_display_modes();
	TRON_init_graphics();

	//fbi_img = render_packed_rgb(fbi, FBI_W, FBI_H, FBI_CMP);

	for (i=1; i<argc; i++)
	{
		if (!strncmp(argv[i], "ddir", 5) && i+1<argc)
		{
			chdir(argv[i+1]);
			i++;
		}
		else if (!strncmp(argv[i], "open", 5) && i+1<argc)
		{
			int size;
			void *file_data;
			file_data = file_load(argv[i+1], &size);
			if (file_data)
			{
				svf_last = file_data;
				svf_lsize = size;
				if(!parse_save(file_data, size, 1, 0, 0, bmap, fvx, fvy, vx, vy, pv, signs, parts, pmap))
				{
					it=0;
					svf_filename[0] = 0;
					svf_fileopen = 1;
				} else {
					saveOpenError = 1;
					svf_last = NULL;
					svf_lsize = 0;
					free(file_data);
					file_data = NULL;
				}
			}
			i++;
		}
		else if (!strncmp(argv[i], "ptsave", 7) && i+1<argc)
		{
			//Prevent reading of any arguments after ptsave for security
			i++;
			argc = i+2;
			break;
		}
	}
	
	load_presets();

	for (i=1; i<argc; i++)
	{
		if (!strncmp(argv[i], "scale:", 6))
		{
			sdl_scale = (argv[i][6]=='2') ? 2 : 1;
		}
		else if (!strncmp(argv[i], "proxy:", 6))
		{
			memset(http_proxy_string, 0, sizeof(http_proxy_string));
			strncpy(http_proxy_string, argv[i]+6, 255);
		}
		else if (!strncmp(argv[i], "nohud", 5))
		{
			hud_enable = 0;
		}
		else if (!strncmp(argv[i], "kiosk", 5))
		{
			kiosk_enable = 1;
			//sdl_scale = 2; //Removed because some displays cannot handle the resolution
			hud_enable = 0;
		}
		else if (!strncmp(argv[i], "sound", 5))
		{
			/* Open the audio device and start playing sound! */
			if ( SDL_OpenAudio(&fmt, NULL) < 0 )
			{
				fprintf(stderr, "Unable to open audio: %s\n", SDL_GetError());
			}
			else
			{
				sound_enable = 1;
				SDL_PauseAudio(0);
			}
		}
		else if (!strncmp(argv[i], "scripts", 8))
		{
			file_script = 1;
		}
		else if (!strncmp(argv[i], "open", 5) && i+1<argc)
		{
			i++;
		}
		else if (!strncmp(argv[i], "ddir", 5) && i+1<argc)
		{
			i++;
		}
		else if (!strncmp(argv[i], "ptsave", 7) && i+1<argc)
		{
			int ci = 0, ns = 0, okay = 0;
			char * tempString = argv[i+1];
			int tempStringLength = strlen(argv[i+1])-7;
			int tempSaveID = 0;
			char tempNumberString[32];
			puts("Got ptsave");
			i++;
			tempNumberString[31] = 0;
			tempNumberString[0] = 0;
			if(!strncmp(tempString, "ptsave:", 7) && tempStringLength)
			{
				puts("ptsave:// protocol");
				tempString+=7;
				while(tempString[ci] && ns<30 && ci<tempStringLength)
				{
					if(tempString[ci]>=48 && tempString[ci]<=57)
					{
						tempNumberString[ns++] = tempString[ci];
						tempNumberString[ns] = 0;
					}
					else if(tempString[ci]=='#')
					{
						okay = 1;
						break;
					}
					else
					{
						puts("ptsave: invalid save ID");
						break;
					}
					ci++;
				}
				if(!tempString[ci])
				{
					okay = 1;
				}
				if(okay)
				{
					tempSaveID = atoi(tempNumberString);
				}
			}
			if(tempSaveID > 0)
			{
				puts("Got ptsave:id");
				saveURIOpen = tempSaveID;
			}
			break;
		}
	}

	make_kernel();

	stamp_init();

	if (!sdl_open())
	{
		sdl_scale = 1;
		kiosk_enable = 0;
		if (!sdl_open()) exit(1);
	}
	save_presets(0);
	http_init(http_proxy_string[0] ? http_proxy_string : NULL);

	prepare_alpha(CELL, 1.0f);
	prepare_graphicscache();
	flm_data = generate_gradient(flm_data_colours, flm_data_pos, flm_data_points, 200);
	plasma_data = generate_gradient(plasma_data_colours, plasma_data_pos, plasma_data_points, 200);

	if (cpu_check())
	{
		error_ui(vid_buf, 0, "Unsupported CPU. Try another version.");
		return 1;
	}
	
	if(saveOpenError)
	{
		error_ui(vid_buf, 0, "Unable to open save file.");
	}

	http_ver_check = http_async_req_start(NULL, "http://" SERVER "/Update.api?Action=CheckVersion", NULL, 0, 0);
	if (svf_login) {
		http_auth_headers(http_ver_check, svf_user_id, NULL, svf_session_id); //Add authentication so beta checking can be done from user basis
		http_session_check = http_async_req_start(NULL, "http://" SERVER "/Login.api?Action=CheckSession", NULL, 0, 0);
		http_auth_headers(http_session_check, svf_user_id, NULL, svf_session_id);
	}
#ifdef LUACONSOLE
	luacon_eval("dofile(\"autorun.lua\")"); //Autorun lua script
#endif
	while (!sdl_poll()) //the main loop
	{
		frameidx++;
		frameidx %= 30;
		if (!sys_pause||framerender) //only update air if not paused
		{
			update_air();
			if(aheat_enable)
				update_airh();
		}

		if(gravwl_timeout)
		{
			if(gravwl_timeout==1)
				gravity_mask();
			gravwl_timeout--;
		}

		//Can't be too sure (Limit the cursor size)
		if (bsx>1180)
			bsx = 1180;
		if (bsx<0)
			bsx = 0;
		if (bsy>1180)
			bsy = 1180;
		if (bsy<0)
			bsy = 0;
			
		//Pretty powders, colour cycle
		//sandcolour_r = 0;
		//sandcolour_g = 0;
		sandcolour_b = sandcolour_r = sandcolour_g = (int)(20.0f*sin((float)sandcolour_frame*(M_PI/180.0f)));
		sandcolour_frame++;
		sandcolour_frame%=360;

#ifdef OGLR
		part_vbuf = vid_buf;
#else
		if(ngrav_enable && (display_mode & DISPLAY_WARP))
		{
			part_vbuf = part_vbuf_store;
			memset(vid_buf, 0, (XRES+BARSIZE)*YRES*PIXELSIZE);
		} else {
			part_vbuf = vid_buf;
		}
#endif
		render_before(part_vbuf);
		
		if(debug_flags & (DEBUG_PERFORMANCE_CALC|DEBUG_PERFORMANCE_FRAME))
		{
			#ifdef WIN32
			#elif defined(MACOSX)
			#else
				struct timespec ts;
				clock_gettime(CLOCK_REALTIME, &ts);
				debug_perf_time = ts.tv_nsec;
			#endif
		}
		
		update_particles(part_vbuf); //update everything
			
		if(debug_flags & (DEBUG_PERFORMANCE_CALC|DEBUG_PERFORMANCE_FRAME))
		{
			#ifdef WIN32
			#elif defined(MACOSX)
			#else
				struct timespec ts;
				clock_gettime(CLOCK_REALTIME, &ts);
				
				debug_perf_partitime[debug_perf_iend]  = ts.tv_nsec - debug_perf_time;
				
				debug_perf_time = ts.tv_nsec;
			#endif
		}
		
		render_after(part_vbuf, vid_buf);
		if(su == WL_GRAV+100)
			draw_grav_zones(part_vbuf);
		
		if(debug_flags & (DEBUG_PERFORMANCE_CALC|DEBUG_PERFORMANCE_FRAME))
		{
			#ifdef WIN32
			#elif defined(MACOSX)
			#else
				struct timespec ts;
				clock_gettime(CLOCK_REALTIME, &ts);
				
				debug_perf_frametime[debug_perf_iend]  = ts.tv_nsec - debug_perf_time;
			#endif
			debug_perf_iend++;
			debug_perf_iend %= DEBUG_PERF_FRAMECOUNT;
			debug_perf_istart++;
			debug_perf_istart %= DEBUG_PERF_FRAMECOUNT;
		}
		
		gravity_update_async(); //Check for updated velocity maps from gravity thread
		if (!sys_pause||framerender) //Only update if not paused
			memset(gravmap, 0, (XRES/CELL)*(YRES/CELL)*sizeof(float)); //Clear the old gravmap

		if (framerender) {
			framerender = 0;
			sys_pause = 1;
		}

		memset(vid_buf+((XRES+BARSIZE)*YRES), 0, (PIXELSIZE*(XRES+BARSIZE))*MENUSIZE);//clear menu areas
		clearrect(vid_buf, XRES-1, 0, BARSIZE+1, YRES);

		draw_svf_ui(vid_buf, sdl_mod & (KMOD_LCTRL|KMOD_RCTRL));
		
		if(debug_flags)
		{
			draw_debug_info(vid_buf, lm, lx, ly, x, y, line_x, line_y);
		}

		if (http_ver_check)
		{
			if (!do_check && http_async_req_status(http_ver_check))
			{
				ver_data = http_async_req_stop(http_ver_check, &http_ret, NULL);
				if (http_ret==200 && ver_data)
				{
					if (sscanf(ver_data, "%d.%d.%d.%d", &major, &minor, &is_beta, &buildnum)==4)
						if (buildnum>BUILD_NUM)
							old_version = 1;
						if (is_beta)
						{
							old_ver_len = textwidth((char*)old_ver_msg_beta);
						}
						else
						{
							old_ver_len = textwidth((char*)old_ver_msg);
						}
					free(ver_data);
				}
				http_ver_check = NULL;
			}
			do_check = (do_check+1) & 15;
		}
		if (http_session_check)
		{
			if (!do_s_check && http_async_req_status(http_session_check))
			{
				char saveURIOpenString[512];
				check_data = http_async_req_stop(http_session_check, &http_s_ret, NULL);
				if (http_ret==200 && check_data)
				{
					if (!strncmp(check_data, "EXPIRED", 7))
					{
						//Session expired
						printf("EXPIRED");
						strcpy(svf_user, "");
						strcpy(svf_pass, "");
						strcpy(svf_user_id, "");
						strcpy(svf_session_id, "");
						svf_login = 0;
						svf_own = 0;
						svf_admin = 0;
						svf_mod = 0;
						svf_messages = 0;
					}
					else if (!strncmp(check_data, "BANNED", 6))
					{
						//User banned
						printf("BANNED");
						strcpy(svf_user, "");
						strcpy(svf_pass, "");
						strcpy(svf_user_id, "");
						strcpy(svf_session_id, "");
						svf_login = 0;
						svf_own = 0;
						svf_admin = 0;
						svf_mod = 0;
						svf_messages = 0;
						error_ui(vid_buf, 0, "Unable to log in\nYour account has been suspended, consider reading the rules.");
					}
					else if (!strncmp(check_data, "OK", 2))
					{
						//Session valid
						if (strlen(check_data)>2) {
							//User is elevated
							if (!strncmp(check_data+3, "ADMIN", 5))
							{
								//Check for messages
								svf_messages = atoi(check_data+9);
								svf_admin = 1;
								svf_mod = 0;
							}
							else if (!strncmp(check_data+3, "MOD", 3))
							{
								//Check for messages
								svf_messages = atoi(check_data+7);
								svf_admin = 0;
								svf_mod = 1;
							} else {
								//Check for messages
								svf_messages = atoi(check_data+3);
							}
						}
					}
					else
					{
						//No idea, but log the user out anyway
						strcpy(svf_user, "");
						strcpy(svf_pass, "");
						strcpy(svf_user_id, "");
						strcpy(svf_session_id, "");
						svf_login = 0;
						svf_own = 0;
						svf_admin = 0;
						svf_mod = 0;
						svf_messages = 0;
					}
					save_presets(0);
					free(check_data);
				} else {
					//Unable to check session, YOU WILL BE TERMINATED
					strcpy(svf_user, "");
					strcpy(svf_pass, "");
					strcpy(svf_user_id, "");
					strcpy(svf_session_id, "");
					svf_login = 0;
					svf_own = 0;
					svf_admin = 0;
					svf_mod = 0;
					svf_messages = 0;
				}
				http_session_check = NULL;
				if(saveURIOpen)
				{
					sprintf(saveURIOpenString, "%d", saveURIOpen);
					open_ui(vid_buf, saveURIOpenString, NULL);
					saveURIOpen = 0;
				}
			} else {
				if(saveURIOpen)
					info_box_overlay(vid_buf, "Waiting for login...");
				clearrect(vid_buf, XRES-125+BARSIZE/*385*/, YRES+(MENUSIZE-16), 91, 14);
				drawrect(vid_buf, XRES-125+BARSIZE/*385*/, YRES+(MENUSIZE-16), 91, 14, 255, 255, 255, 255);
				drawtext(vid_buf, XRES-122+BARSIZE/*388*/, YRES+(MENUSIZE-13), "\x84", 255, 255, 255, 255);
				if (username_flash>30) {
					username_flash_t = -1;
					username_flash = 30;
				} else if (username_flash<0) {
					username_flash_t = 1;
					username_flash = 0;
				}
				username_flash += username_flash_t;
				if (svf_login)
					drawtext(vid_buf, XRES-104+BARSIZE/*406*/, YRES+(MENUSIZE-12), svf_user, 255, 255, 255, 175-(username_flash*5));
				else
					drawtext(vid_buf, XRES-104+BARSIZE/*406*/, YRES+(MENUSIZE-12), "[checking]", 255, 255, 255, 255);
			}
			do_s_check = (do_s_check+1) & 15;
		}
		else
		{
			char saveURIOpenString[512];
			if(saveURIOpen)
			{
				sprintf(saveURIOpenString, "%d", saveURIOpen);
				open_ui(vid_buf, saveURIOpenString, NULL);
				saveURIOpen = 0;
			}
		}
#ifdef LUACONSOLE
	if(sdl_key){
		if(!luacon_keyevent(sdl_key, sdl_mod, LUACON_KDOWN))
			sdl_key = 0;
	}
	if(sdl_rkey){
		if(!luacon_keyevent(sdl_rkey, sdl_mod, LUACON_KUP))
			sdl_rkey = 0;
	}
#endif
		if (sys_shortcuts==1)//all shortcuts can be disabled by python scripts
		{
			if (sdl_key=='q' || sdl_key==SDLK_ESCAPE)
			{
				if (confirm_ui(vid_buf, "You are about to quit", "Are you sure you want to quit?", "Quit"))
				{
					break;
				}
			}
			if (sdl_key=='i' && (sdl_mod & KMOD_CTRL))
			{
				if(confirm_ui(vid_buf, "Install Powder Toy", "You are about to install The Powder Toy", "Install"))
				{
					if(register_extension())
					{
						info_ui(vid_buf, "Install success", "Powder Toy has been installed!");
					}
					else
					{
						error_ui(vid_buf, 0, "Install failed - You may not have permission or you may be on a platform that does not support installation");
					}
				}
			}
			if (sdl_key=='f')
			{
				framerender = 1;
			}
			if ((sdl_key=='l' || sdl_key=='k') && stamps[0].name[0])
			{
				if (load_mode)
				{
					free(load_img);
					free(load_data);
					load_mode = 0;
					load_data = NULL;
					load_img = NULL;
				}
				if (it > 50)
					it = 50;
				if (sdl_key=='k' && stamps[1].name[0])
				{
					j = stamp_ui(vid_buf);
					if (j>=0)
						load_data = stamp_load(j, &load_size);
					else
						load_data = NULL;
				}
				else
					load_data = stamp_load(0, &load_size);
				if (load_data)
				{
					load_img = prerender_save(load_data, load_size, &load_w, &load_h);
					if (load_img)
						load_mode = 1;
					else
						free(load_data);
				}
			}
			if (sdl_key=='s' && ((sdl_mod & (KMOD_CTRL)) || !player2.spwn))
			{
				if (it > 50)
					it = 50;
				save_mode = 1;
			}
			if(sdl_key=='e')
			{
				element_search_ui(vid_buf, &sl, &sr);
			}
			//TODO: Superseded by new display mode switching, need some keyboard shortcuts
			if (sdl_key=='1')
			{
				set_cmode(CM_VEL);
			}
			if (sdl_key=='2')
			{
				set_cmode(CM_PRESS);
			}
			if (sdl_key=='3')
			{
				set_cmode(CM_PERS);
			}
			if (sdl_key=='4')
			{
				set_cmode(CM_FIRE);
			}
			if (sdl_key=='5')
			{
				set_cmode(CM_BLOB);
			}
			if (sdl_key=='6')
			{
				set_cmode(CM_HEAT);
			}
			if (sdl_key=='7')
			{
				set_cmode(CM_FANCY);
			}
			if (sdl_key=='8')
			{
				set_cmode(CM_NOTHING);
			}
			if (sdl_key=='9')
			{
				set_cmode(CM_GRAD);
			}
			if (sdl_key=='0')
			{
				set_cmode(CM_CRACK);
			}
			if (sdl_key=='1'&& (sdl_mod & (KMOD_SHIFT)) && DEBUG_MODE)
			{
				set_cmode(CM_LIFE);
			}
			if (sdl_key==SDLK_TAB)
			{
				CURRENT_BRUSH =(CURRENT_BRUSH + 1)%BRUSH_NUM ;
			}
			if (sdl_key==SDLK_LEFTBRACKET) {
				if (sdl_zoom_trig)
				{
					ZSIZE -= 1;
					if (ZSIZE>60)
						ZSIZE = 60;
					if (ZSIZE<2)
						ZSIZE = 2;
					ZFACTOR = 256/ZSIZE;
				}
				else
				{
					if (sdl_mod & (KMOD_LALT|KMOD_RALT) && !(sdl_mod & (KMOD_SHIFT|KMOD_CTRL)))
					{
						bsx -= 1;
						bsy -= 1;
					}
					else if (sdl_mod & (KMOD_SHIFT) && !(sdl_mod & (KMOD_CTRL)))
					{
						bsx -= 1;
					}
					else if (sdl_mod & (KMOD_CTRL) && !(sdl_mod & (KMOD_SHIFT)))
					{
						bsy -= 1;
					}
					else
					{
						bsx -= ceil((bsx/5)+0.5f);
						bsy -= ceil((bsy/5)+0.5f);
					}
					if (bsx>1180)
						bsx = 1180;
					if (bsy>1180)
						bsy = 1180;
					if (bsx<0)
						bsx = 0;
					if (bsy<0)
						bsy = 0;
				}
			}
			if (sdl_key==SDLK_RIGHTBRACKET) {
				if (sdl_zoom_trig)
				{
					ZSIZE += 1;
					if (ZSIZE>60)
						ZSIZE = 60;
					if (ZSIZE<2)
						ZSIZE = 2;
					ZFACTOR = 256/ZSIZE;
				}
				else
				{
					if (sdl_mod & (KMOD_LALT|KMOD_RALT) && !(sdl_mod & (KMOD_SHIFT|KMOD_CTRL)))
					{
						bsx += 1;
						bsy += 1;
					}
					else if (sdl_mod & (KMOD_SHIFT) && !(sdl_mod & (KMOD_CTRL)))
					{
						bsx += 1;
					}
					else if (sdl_mod & (KMOD_CTRL) && !(sdl_mod & (KMOD_SHIFT)))
					{
						bsy += 1;
					}
					else
					{
						bsx += ceil((bsx/5)+0.5f);
						bsy += ceil((bsy/5)+0.5f);
					}
					if (bsx>1180)
						bsx = 1180;
					if (bsy>1180)
						bsy = 1180;
					if (bsx<0)
						bsx = 0;
					if (bsy<0)
						bsy = 0;
				}
			}
			if (sdl_key=='d' && ((sdl_mod & (KMOD_CTRL)) || !player2.spwn))
				DEBUG_MODE = !DEBUG_MODE;
			if (sdl_key=='i')
			{
				int nx, ny;
				for (nx = 0; nx<XRES/CELL; nx++)
					for (ny = 0; ny<YRES/CELL; ny++)
					{
						pv[ny][nx] = -pv[ny][nx];
						vx[ny][nx] = -vx[ny][nx];
						vy[ny][nx] = -vy[ny][nx];
					}
			}
			if (sdl_key==SDLK_INSERT || sdl_key == SDLK_SEMICOLON)// || sdl_key==SDLK_BACKQUOTE)
				REPLACE_MODE = !REPLACE_MODE;
			if (sdl_key==SDLK_BACKQUOTE)
			{
				console_mode = !console_mode;
				//hud_enable = !console_mode;
			}
			if (sdl_key=='b')
			{
				if (sdl_mod & KMOD_CTRL)
				{
					decorations_enable = !decorations_enable;
					itc = 51;
					if (decorations_enable) strcpy(itc_msg, "Decorations layer: On");
					else strcpy(itc_msg, "Decorations layer: Off");
				}
				else
				{
					decorations_enable = 1;
					rgbSave = decorations_ui(vid_buf,&bsx,&bsy,rgbSave);//decoration_mode = !decoration_mode;
				}
			}
			if (sdl_key=='g')
			{
				if(sdl_mod & (KMOD_CTRL))
				{
					drawgrav_enable =! drawgrav_enable;
				}
				else
				{
					if (sdl_mod & (KMOD_SHIFT))
						GRID_MODE = (GRID_MODE+9)%10;
					else
						GRID_MODE = (GRID_MODE+1)%10;
				}
			}
			if (sdl_key=='m')
			{
				if(sl!=sr)
				{
					sl ^= sr;
					sr ^= sl;
					sl ^= sr;
				}
				dae = 51;
			}
			if (sdl_key=='=')
			{
				int nx, ny;
				if (sdl_mod & (KMOD_CTRL))
				{
					for (i=0; i<NPART; i++)
						if (parts[i].type==PT_SPRK)
						{
							if (parts[i].ctype >= 0 && parts[i].ctype < PT_NUM)
							{
								parts[i].type = parts[i].ctype;
								parts[i].life = 0;
							}
							else
								kill_part(i);
						}
				}
				else
				{
					for (nx = 0; nx<XRES/CELL; nx++)
						for (ny = 0; ny<YRES/CELL; ny++)
						{
							pv[ny][nx] = 0;
							vx[ny][nx] = 0;
							vy[ny][nx] = 0;
						}
				}
			}

			if (sdl_key=='w' && (!player2.spwn || (sdl_mod & (KMOD_SHIFT)))) //Gravity, by Moach
			{
				++gravityMode; // cycle gravity mode
				itc = 51;

				switch (gravityMode)
				{
				default:
					gravityMode = 0;
				case 0:
					strcpy(itc_msg, "Gravity: Vertical");
					break;
				case 1:
					strcpy(itc_msg, "Gravity: Off");
					break;
				case 2:
					strcpy(itc_msg, "Gravity: Radial");
					break;

				}
			}
			if (sdl_key=='y')
			{
				++airMode;
				itc = 52;

				switch (airMode)
				{
				default:
					airMode = 0;
				case 0:
					strcpy(itc_msg, "Air: On");
					break;
				case 1:
					strcpy(itc_msg, "Air: Pressure Off");
					break;
				case 2:
					strcpy(itc_msg, "Air: Velocity Off");
					break;
				case 3:
					strcpy(itc_msg, "Air: Off");
					break;
				case 4:
					strcpy(itc_msg, "Air: No Update");
					break;
				}
			}

			if (sdl_key=='t')
				VINE_MODE = !VINE_MODE;
			if (sdl_key==SDLK_SPACE)
				sys_pause = !sys_pause;
			if (sdl_key=='u')
				aheat_enable = !aheat_enable;
			if (sdl_key=='h' && !(sdl_mod & KMOD_LCTRL))
			{
				hud_enable = !hud_enable;
			}
			if (sdl_key==SDLK_F1 || (sdl_key=='h' && (sdl_mod & KMOD_LCTRL)))
			{
				if(!it)
				{
					it = 8047;
				}
				else
				{
					it = 0;
				}
			}
			if (sdl_key=='n')
				pretty_powder = !pretty_powder;
			if (sdl_key=='p')
				dump_frame(vid_buf, XRES, YRES, XRES+BARSIZE);
			if (sdl_key=='v'&&(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)))
			{
				if (clipboard_ready==1)
				{
					load_data = malloc(clipboard_length);
					memcpy(load_data, clipboard_data, clipboard_length);
					load_size = clipboard_length;
					if (load_data)
					{
						load_img = prerender_save(load_data, load_size, &load_w, &load_h);
						if (load_img)
							load_mode = 1;
						else
							free(load_data);
					}
				}
			}
			if (load_mode==1)
			{
				matrix2d transform = m2d_identity;
				vector2d translate = v2d_zero;
				void *ndata;
				int doTransform = 0;
				if (sdl_key=='r'&&(sdl_mod & (KMOD_CTRL))&&(sdl_mod & (KMOD_SHIFT)))
				{
					transform = m2d_new(-1,0,0,1); //horizontal invert
					doTransform = 1;
				}
				else if (sdl_key=='r'&&(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)))
				{
					transform = m2d_new(0,1,-1,0); //rotate anticlockwise 90 degrees
					doTransform = 1;
				}
				else if (sdl_mod & (KMOD_CTRL))
				{
					doTransform = 1;
					if (sdl_key==SDLK_LEFT) translate = v2d_new(-1,0);
					else if (sdl_key==SDLK_RIGHT) translate = v2d_new(1,0);
					else if (sdl_key==SDLK_UP) translate = v2d_new(0,-1);
					else if (sdl_key==SDLK_DOWN) translate = v2d_new(0,1);
					else doTransform = 0;
				}
				if (doTransform)
				{
					ndata = transform_save(load_data, &load_size, transform, translate);
					if (ndata!=load_data) free(load_data);
					free(load_img);
					load_data = ndata;
					load_img = prerender_save(load_data, load_size, &load_w, &load_h);
				}
			}
			if (sdl_key=='r'&&!(sdl_mod & (KMOD_CTRL|KMOD_SHIFT)))
				GENERATION = 0;
			if (sdl_key=='x'&&(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)))
			{
				save_mode = 1;
				copy_mode = 2;
			}
			if (sdl_key=='c'&&(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)))
			{
				save_mode = 1;
				copy_mode = 1;
			}
			//TODO: Superseded by new display mode switching, need some keyboard shortcuts
			/*else if (sdl_key=='c')
			{
				set_cmode((cmode+1) % CM_COUNT);
				if (it > 50)
					it = 50;
			}*/
			if (sdl_key=='z'&&(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL))) // Undo
			{
				int cbx, cby, cbi;

				for (cbi=0; cbi<NPART; cbi++)
					parts[cbi] = cb_parts[cbi];
				parts_lastActiveIndex = NPART-1;

				for (cby = 0; cby<YRES; cby++)
					for (cbx = 0; cbx<XRES; cbx++)
						pmap[cby][cbx] = cb_pmap[cby][cbx];

				for (cby = 0; cby<(YRES/CELL); cby++)
					for (cbx = 0; cbx<(XRES/CELL); cbx++)
					{
						vx[cby][cbx] = cb_vx[cby][cbx];
						vy[cby][cbx] = cb_vy[cby][cbx];
						pv[cby][cbx] = cb_pv[cby][cbx];
						hv[cby][cbx] = cb_hv[cby][cbx];
						bmap[cby][cbx] = cb_bmap[cby][cbx];
						emap[cby][cbx] = cb_emap[cby][cbx];
					}
			}
		}
#ifdef INTERNAL
		int counterthing;
		if (sdl_key=='v'&&!(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL)))//frame capture
		{
			if (sdl_mod & (KMOD_SHIFT)) {
				if (vs>=1)
					vs = 0;
				else
					vs = 3;//every other frame
			}
			else
			{
				if (vs>=1)
					vs = 0;
				else
					vs = 1;
			}
			counterthing = 0;
		}
		if (vs)
		{
			if (counterthing+1>=vs)
			{
				dump_frame(vid_buf, XRES, YRES, XRES+BARSIZE);
				counterthing = 0;
			}
			counterthing = (counterthing+1)%3;
		}
#endif

		if (sdl_wheel)
		{
			if (sdl_zoom_trig)//zoom window change
			{
				ZSIZE += sdl_wheel;
				if (ZSIZE>60)
					ZSIZE = 60;
				if (ZSIZE<2)
					ZSIZE = 2;
				ZFACTOR = 256/ZSIZE;
				sdl_wheel = 0;
			}
			else //change brush size
			{
				if (!(sdl_mod & (KMOD_SHIFT|KMOD_CTRL)))
				{
					bsx += sdl_wheel;
					bsy += sdl_wheel;
				}
				else if (sdl_mod & (KMOD_SHIFT) && !(sdl_mod & (KMOD_CTRL)))
				{
					bsx += sdl_wheel;
				}
				else if (sdl_mod & (KMOD_CTRL) && !(sdl_mod & (KMOD_SHIFT)))
				{
					bsy += sdl_wheel;
				}
				if (bsx>1180)
					bsx = 1180;
				if (bsx<0)
					bsx = 0;
				if (bsy>1180)
					bsy = 1180;
				if (bsy<0)
					bsy = 0;
				sdl_wheel = 0;
				/*if(su >= PT_NUM) {
					if(sl < PT_NUM)
						su = sl;
					if(sr < PT_NUM)
						su = sr;
				}*/
			}
		}

		bq = bc; // bq is previous mouse state
		bc = b = mouse_get_state(&x, &y); // b is current mouse state

#ifdef LUACONSOLE
		if(bc && bq){
			if(!luacon_mouseevent(x, y, bc, LUACON_MPRESS)){
				b = 0;
			}
		}
		else if(bc && !bq){
			if(!luacon_mouseevent(x, y, bc, LUACON_MDOWN)){
				b = 0;
			}
		}
		else if(!bc && bq){
			if(!luacon_mouseevent(x, y, bq, LUACON_MUP)){
				b = 0;
			}
		}
		luacon_step(x, y,sl,sr);
#endif

		quickoptions_menu(vid_buf, b, bq, x, y);

		for (i=0; i<SC_TOTAL; i++)//draw all the menu sections
		{
			draw_menu(vid_buf, i, active_menu);
		}

		for (i=0; i<SC_TOTAL; i++)//check mouse position to see if it is on a menu section
		{
			if (!b&&x>=(XRES-2) && x<(XRES+BARSIZE-1) &&y>= ((i*16)+YRES+MENUSIZE-16-(SC_TOTAL*16)) && y<((i*16)+YRES+MENUSIZE-16-(SC_TOTAL*16)+15))
			{
				active_menu = i;
			}
		}
		menu_ui_v3(vid_buf, active_menu, &sl, &sr, &su, &dae, b, bq, x, y); //draw the elements in the current menu
		mouse_coords_window_to_sim(&x, &y, x, y);//change mouse position while it is in a zoom window
		if (y>=0 && y<YRES && x>=0 && x<XRES)
		{
			int cr; //cr is particle under mouse, for drawing HUD information
			char nametext[50];
			if (photons[y][x]) {
				cr = photons[y][x];
			} else {
				cr = pmap[y][x];
			}
			if (cr)
			{
				if ((cr&0xFF)==PT_LIFE && parts[cr>>8].ctype>=0 && parts[cr>>8].ctype<NGOLALT)
				{
					sprintf(nametext, "%s (%s)", ptypes[cr&0xFF].name, gmenu[parts[cr>>8].ctype].name);
				}
				else if ((cr&0xFF)==PT_LAVA && parts[cr>>8].ctype > 0 && parts[cr>>8].ctype < PT_NUM )
				{
					char lowername[6];
					int ix;
					strcpy(lowername, ptypes[parts[cr>>8].ctype].name);
					for (ix = 0; lowername[ix]; ix++)
						lowername[ix] = tolower(lowername[ix]);

					sprintf(nametext, "Molten %s", lowername);
				}
				else if ((cr&0xFF)==PT_PIPE && (parts[cr>>8].tmp&0xFF) > 0 && (parts[cr>>8].tmp&0xFF) < PT_NUM )
				{
					char lowername[6];
					int ix;
					strcpy(lowername, ptypes[parts[cr>>8].tmp&0xFF].name);
					for (ix = 0; lowername[ix]; ix++)
						lowername[ix] = tolower(lowername[ix]);

					sprintf(nametext, "Pipe with %s", lowername);
				}
				else if (DEBUG_MODE)
				{
					int tctype = parts[cr>>8].ctype;
					if ((cr&0xFF)==PT_PIPE)
					{
						tctype = parts[cr>>8].tmp&0xFF;
					}
					if (tctype>=PT_NUM || tctype<0 || (cr&0xFF)==PT_PHOT)
						tctype = 0;
					sprintf(nametext, "%s (%s)", ptypes[cr&0xFF].name, ptypes[tctype].name);
				}
				else
				{
					strcpy(nametext, ptypes[cr&0xFF].name);
				}
				if (DEBUG_MODE)
				{
					sprintf(heattext, "%s, Pressure: %3.2f, Temp: %4.2f C, Life: %d, Tmp:%d", nametext, pv[y/CELL][x/CELL], parts[cr>>8].temp-273.15f, parts[cr>>8].life, parts[cr>>8].tmp);
					sprintf(coordtext, "#%d, X:%d Y:%d", cr>>8, x, y);
				}
				else
				{
#ifdef BETA
					sprintf(heattext, "%s, Pressure: %3.2f, Temp: %4.2f C, Life: %d, Tmp:%d", nametext, pv[y/CELL][x/CELL], parts[cr>>8].temp-273.15f, parts[cr>>8].life, parts[cr>>8].tmp);
#else
					sprintf(heattext, "%s, Pressure: %3.2f, Temp: %4.2f C", nametext, pv[y/CELL][x/CELL], parts[cr>>8].temp-273.15f);
#endif
				}
				if ((cr&0xFF)==PT_PHOT) wavelength_gfx = parts[cr>>8].ctype;
			}
			else
			{
				sprintf(heattext, "Empty, Pressure: %3.2f", pv[y/CELL][x/CELL]);
				if (DEBUG_MODE)
				{
					if (ngrav_enable)
						sprintf(coordtext, "X:%d Y:%d. GX: %.2f GY: %.2f", x, y, gravx[((y/CELL)*(XRES/CELL))+(x/CELL)], gravy[((y/CELL)*(XRES/CELL))+(x/CELL)]);
					else
						sprintf(coordtext, "X:%d Y:%d", x, y);
				}
			}
		}


		mx = x;
		my = y;
		if (b && !bq && x>=(XRES-19-new_message_len) &&
		        x<=(XRES-14) && y>=(YRES-37) && y<=(YRES-24) && svf_messages)
		{
			open_link("http://" SERVER "/Conversations.html");
		}
		if (update_flag)
		{
			info_box(vid_buf, "Finalizing update...");
			if (last_build>BUILD_NUM)
			{
				update_cleanup();
				error_ui(vid_buf, 0, "Update failed - try downloading a new version.");
			}
			else
			{
				if (update_finish())
					error_ui(vid_buf, 0, "Update failed - try downloading a new version.");
				else
					info_ui(vid_buf, "Update success", "You have successfully updated the Powder Toy!");
			}
			update_flag = 0;
		}

		if (b && !bq && x>=(XRES-19-old_ver_len) &&
		        x<=(XRES-14) && y>=(YRES-22) && y<=(YRES-9) && old_version)
		{
			tmp = malloc(128);
#ifdef BETA
			if (is_beta)
			{
				sprintf(tmp, "Your version: %d.%d Beta (%d)\nNew version: %d.%d Beta (%d)", SAVE_VERSION, MINOR_VERSION, BUILD_NUM, major, minor, buildnum);
			}
			else
			{
				sprintf(tmp, "Your version: %d.%d Beta (%d)\nNew version: %d.%d (%d)", SAVE_VERSION, MINOR_VERSION, BUILD_NUM, major, minor, buildnum);
			}
#else
			if (is_beta)
			{
				sprintf(tmp, "Your version: %d.%d (%d)\nNew version: %d.%d Beta (%d)", SAVE_VERSION, MINOR_VERSION, BUILD_NUM, major, minor, buildnum);
			}
			else
			{
				sprintf(tmp, "Your version: %d.%d (%d)\nNew version: %d.%d (%d)", SAVE_VERSION, MINOR_VERSION, BUILD_NUM, major, minor, buildnum);
			}
#endif
			if (confirm_ui(vid_buf, "Do you want to update The Powder Toy?", tmp, "Update"))
			{
				free(tmp);
				tmp = download_ui(vid_buf, my_uri, &i);
				if (tmp)
				{
					save_presets(1);
					if (update_start(tmp, i))
					{
						update_cleanup();
						save_presets(0);
						error_ui(vid_buf, 0, "Update failed - try downloading a new version.");
					}
					else
						return 0;
				}
			}
			else
			{
				free(tmp);
				old_version = 0;
			}
		}
		if (y>=(YRES+(MENUSIZE-20))) //mouse checks for buttons at the bottom, to draw mouseover texts
		{
			if (x>=189 && x<=202 && svf_login && svf_open && svf_myvote==0)
			{
				db = svf_own ? 275 : 272;
				if (da < 51)
					da ++;
			}
			else if (x>=204 && x<=217 && svf_login && svf_open && svf_myvote==0)
			{
				db = svf_own ? 275 : 272;
				if (da < 51)
					da ++;
			}
			else if (x>=189 && x<=217 && svf_login && svf_open && svf_myvote!=0)
			{
				db = (svf_myvote==1) ? 273 : 274;
				if (da < 51)
					da ++;
			}
			else if (x>=219 && x<=((XRES+BARSIZE-(510-349))) && svf_login && svf_open)
			{
				db = svf_own ? 257 : 256;
				if (da < 51)
					da ++;
			}
			else if (x>=((XRES+BARSIZE-(510-351))) && x<((XRES+BARSIZE-(510-366))))
			{
				db = 270;
				if (da < 51)
					da ++;
			}
			else if (x>=((XRES+BARSIZE-(510-367))) && x<((XRES+BARSIZE-(510-383))))
			{
				db = 266;
				if (da < 51)
					da ++;
			}
			else if (x>=37 && x<=187)
			{
				if(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL))
				{
					db = 277;
					if (da < 51)
						da ++;
				}
				else if(svf_login)
				{
					db = 259;
					if (svf_open && svf_own && x<=55)
						db = 258;
					if (da < 51)
						da ++;
				}
			}
			else if (x>=((XRES+BARSIZE-(510-385))) && x<=((XRES+BARSIZE-(510-476))))
			{
				db = svf_login ? 261 : 260;
				if (svf_admin)
				{
					db = 268;
				}
				else if (svf_mod)
				{
					db = 271;
				}
				if (da < 51)
					da ++;
			}
			else if (x>=1 && x<=17)
			{
				if(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL))
					db = 276;
				else
					db = 262;
				if (da < 51)
					da ++;
			}
			else if (x>=((XRES+BARSIZE-(510-494))) && x<=((XRES+BARSIZE-(510-509))))
			{
				db = sys_pause ? 264 : 263;
				if (da < 51)
					da ++;
			}
			else if (x>=((XRES+BARSIZE-(510-476))) && x<=((XRES+BARSIZE-(510-491))))
			{
				db = 267;
				if (da < 51)
					da ++;
			}
			else if (x>=19 && x<=35 && svf_open)
			{
				db = 265;
				if (da < 51)
					da ++;
			}
			else if (da > 0)
				da --;
		}
		else if (da > 0)//fade away mouseover text
			da --;

		if (dae > 0) //Fade away selected elements
			dae --;
		
		if (!sdl_zoom_trig && zoom_en==1)
			zoom_en = 0;

		if (sdl_key=='z' && zoom_en==2 && sys_shortcuts==1)
			zoom_en = 1;

		if (load_mode)
		{
			load_x = CELL*((mx-load_w/2+CELL/2)/CELL);
			load_y = CELL*((my-load_h/2+CELL/2)/CELL);
			if (load_x+load_w>XRES) load_x=XRES-load_w;
			if (load_y+load_h>YRES) load_y=YRES-load_h;
			if (load_x<0) load_x=0;
			if (load_y<0) load_y=0;
			if (bq==1 && !b)
			{
				parse_save(load_data, load_size, 0, load_x, load_y, bmap, vx, vy, pv, fvx, fvy, signs, parts, pmap);
				free(load_data);
				free(load_img);
				load_mode = 0;
			}
			else if (bq==4 && !b)
			{
				free(load_data);
				free(load_img);
				load_mode = 0;
			}
		}
		else if (save_mode==1)//getting the area you are selecting
		{
			save_x = mx;
			save_y = my;
			if (save_x >= XRES) save_x = XRES-1;
			if (save_y >= YRES) save_y = YRES-1;
			save_w = 1;
			save_h = 1;
			if (b==1)
			{
				save_mode = 2;
			}
			else if (b==4)
			{
				save_mode = 0;
				copy_mode = 0;
			}
		}
		else if (save_mode==2)
		{
			save_w = mx + 1 - save_x;
			save_h = my + 1 - save_y;
			if (save_w+save_x>XRES) save_w = XRES-save_x;
			if (save_h+save_y>YRES) save_h = YRES-save_y;
			if (save_w<1) save_w = 1;
			if (save_h<1) save_h = 1;
			if (!b)
			{
				if (copy_mode==1)//CTRL-C, copy
				{
					clipboard_data=build_save(&clipboard_length, save_x, save_y, save_w, save_h, bmap, vx, vy, pv, fvx, fvy, signs, parts);
					clipboard_ready = 1;
					save_mode = 0;
					copy_mode = 0;
				}
				else if (copy_mode==2)//CTRL-X, cut
				{
					clipboard_data=build_save(&clipboard_length, save_x, save_y, save_w, save_h, bmap, vx, vy, pv, fvx, fvy, signs, parts);
					clipboard_ready = 1;
					save_mode = 0;
					copy_mode = 0;
					clear_area(save_x, save_y, save_w, save_h);
				}
				else//normal save
				{
					stamp_save(save_x, save_y, save_w, save_h);
					save_mode = 0;
				}
			}
		}
		else if (sdl_zoom_trig && zoom_en<2)
		{
			x -= ZSIZE/2;
			y -= ZSIZE/2;
			if (x<0) x=0;
			if (y<0) y=0;
			if (x>XRES-ZSIZE) x=XRES-ZSIZE;
			if (y>YRES-ZSIZE) y=YRES-ZSIZE;
			zoom_x = x;
			zoom_y = y;
			zoom_wx = (x<XRES/2) ? XRES-ZSIZE*ZFACTOR : 0;
			zoom_wy = 0;
			zoom_en = 1;
			if (!b && bq)
			{
				zoom_en = 2;
				sdl_zoom_trig = 0;
			}
		}
		else if (b)//there is a click
		{
			if (it > 50)
				it = 50;
			if (y>=YRES+(MENUSIZE-20))//check if mouse is on menu buttons
			{
				if (!lb)//mouse is NOT held down, so it is a first click
				{
					if (x>=189 && x<=202 && svf_login && svf_open && svf_myvote==0 && svf_own==0)
					{
						if (execute_vote(vid_buf, svf_id, "Up"))
						{
							svf_myvote = 1;
						}
					}
					if (x>=204 && x<=217 && svf_login && svf_open && svf_myvote==0 && svf_own==0)
					{
						if (execute_vote(vid_buf, svf_id, "Down"))
						{
							svf_myvote = -1;
						}
					}
					if (x>=219 && x<=(XRES+BARSIZE-(510-349)) && svf_login && svf_open)
						tag_list_ui(vid_buf);
					if (x>=(XRES+BARSIZE-(510-351)) && x<(XRES+BARSIZE-(510-366)) && !bq)
					{
						//legacy_enable = !legacy_enable;
						simulation_ui(vid_buf);
					}
					if (x>=(XRES+BARSIZE-(510-367)) && x<=(XRES+BARSIZE-(510-383)) && !bq)
					{
						clear_sim();
						for (i=0; i<NPART-1; i++)
							parts[i].life = i+1;
						parts[NPART-1].life = -1;
						pfree = 0;

						legacy_enable = 0;
						svf_filename[0] = 0;
						svf_fileopen = 0;
						svf_myvote = 0;
						svf_open = 0;
						svf_publish = 0;
						svf_own = 0;
						svf_id[0] = 0;
						svf_name[0] = 0;
						svf_tags[0] = 0;
						svf_description[0] = 0;
						gravityMode = 0;
						airMode = 0;
					}
					if (x>=(XRES+BARSIZE-(510-385)) && x<=(XRES+BARSIZE-(510-476)))
					{
						login_ui(vid_buf);
						if (svf_login) {
							save_presets(0);
							http_session_check = NULL;
						}
					}
					if(sdl_mod & (KMOD_LCTRL|KMOD_RCTRL))
					{
						if (x>=37 && x<=187)
						{
							save_filename_ui(vid_buf);
									
						}
						if (x>=1 && x<=17)
						{
							catalogue_ui(vid_buf);
						}
					} else {
						if (x>=37 && x<=187 && svf_login)
						{
							if (!svf_open || !svf_own || x>51)
							{
								if (save_name_ui(vid_buf)) {
									execute_save(vid_buf);
									if (svf_id[0]) {
										copytext_ui(vid_buf, "Save ID", "Saved successfully!", svf_id);
									}
								}
							}
							else
								execute_save(vid_buf);
							while (!sdl_poll())
								if (!mouse_get_state(&x, &y))
									break;
							b = bq = 0;
						}
						if (x>=1 && x<=17)
						{
							search_ui(vid_buf);
							memset(pers_bg, 0, (XRES+BARSIZE)*YRES*PIXELSIZE);
							memset(fire_r, 0, sizeof(fire_r));
							memset(fire_g, 0, sizeof(fire_g));
							memset(fire_b, 0, sizeof(fire_b));
						}
					}
					if (x>=19 && x<=35 && svf_last && (svf_open || svf_fileopen) && !bq) {
						//int tpval = sys_pause;
						parse_save(svf_last, svf_lsize, 1, 0, 0, bmap, vx, vy, pv, fvx, fvy, signs, parts, pmap);
						//sys_pause = tpval;
					}
					if (x>=(XRES+BARSIZE-(510-476)) && x<=(XRES+BARSIZE-(510-491)) && !bq)
					{
						render_ui(vid_buf, XRES+BARSIZE-(510-491)+1, YRES+22, 3);
					}
					if (x>=(XRES+BARSIZE-(510-494)) && x<=(XRES+BARSIZE-(510-509)) && !bq)
						sys_pause = !sys_pause;
					lb = 0;
				}
			}
			else if (y<YRES && x<XRES)// mouse is in playing field
			{
				int signi;

				c = (b&1) ? sl : sr; //c is element to be spawned
				su = c;

				if (c!=WL_SIGN+100 && c!=PT_FIGH)
				{
					if (!bq)
						for (signi=0; signi<MAXSIGNS; signi++)
							if (sregexp(signs[signi].text, "^{c:[0-9]*|.*}$")==0)
							{
								int signx, signy, signw, signh;
								get_sign_pos(signi, &signx, &signy, &signw, &signh);
								if (x>=signx && x<=signx+signw && y>=signy && y<=signy+signh)
								{
									char buff[256];
									int sldr;

									memset(buff, 0, sizeof(buff));

									for (sldr=3; signs[signi].text[sldr] != '|'; sldr++)
										buff[sldr-3] = signs[signi].text[sldr];

									buff[sldr-3] = '\0';
									open_ui(vid_buf, buff, 0);
								}
							}
				}

				if (c==WL_SIGN+100 || MSIGN!=-1) // if sign tool is selected or a sign is being moved
				{
					if (!bq)
						add_sign_ui(vid_buf, x, y);
				}
				else if (c==PT_FIGH)
				{
					if (!bq)
						create_part(-1, x, y, PT_FIGH);
				}
				//for the click functions, lx and ly, are the positions of where the FIRST click happened.  x,y are current mouse position.
				else if (lb)//lb means you are holding mouse down
				{
					if (lm == 1)//line tool
					{
						if (sdl_mod & KMOD_ALT)
						{
							float snap_angle = floor(atan2(y-ly, x-lx)/(M_PI*0.25)+0.5)*M_PI*0.25;
							float line_mag = sqrtf(pow(x-lx,2)+pow(y-ly,2));
							line_x = (int)(line_mag*cos(snap_angle)+lx+0.5f);
							line_y = (int)(line_mag*sin(snap_angle)+ly+0.5f);
						}
						else
						{
							line_x = x;
							line_y = y;
						}
						xor_line(lx, ly, line_x, line_y, vid_buf);
						if (c==WL_FAN+100 && lx>=0 && ly>=0 && lx<XRES && ly<YRES && bmap[ly/CELL][lx/CELL]==WL_FAN)
						{
							nfvx = (line_x-lx)*0.005f;
							nfvy = (line_y-ly)*0.005f;
							flood_parts(lx, ly, WL_FANHELPER, -1, WL_FAN, 0);
							for (j=0; j<YRES/CELL; j++)
								for (i=0; i<XRES/CELL; i++)
									if (bmap[j][i] == WL_FANHELPER)
									{
										fvx[j][i] = nfvx;
										fvy[j][i] = nfvy;
										bmap[j][i] = WL_FAN;
									}
						}
						if (c == SPC_WIND)
						{
							for (j=-bsy; j<=bsy; j++)
								for (i=-bsx; i<=bsx; i++)
									if (lx+i>0 && ly+j>0 && lx+i<XRES && ly+j<YRES && InCurrentBrush(i,j,bsx,bsy))
									{
										vx[(ly+j)/CELL][(lx+i)/CELL] += (line_x-lx)*0.002f;
										vy[(ly+j)/CELL][(lx+i)/CELL] += (line_y-ly)*0.002f;
									}
						}
					}
					else if (lm == 2)//box tool
					{
						xor_line(lx, ly, lx, y, vid_buf);
						xor_line(lx, y, x, y, vid_buf);
						xor_line(x, y, x, ly, vid_buf);
						xor_line(x, ly, lx, ly, vid_buf);
					}
					else//while mouse is held down, it draws lines between previous and current positions
					{
						if (c == SPC_WIND)
						{
							for (j=-bsy; j<=bsy; j++)
								for (i=-bsx; i<=bsx; i++)
									if (x+i>0 && y+j>0 && x+i<XRES && y+j<YRES && InCurrentBrush(i,j,bsx,bsy))
									{
										vx[(y+j)/CELL][(x+i)/CELL] += (x-lx)*0.01f;
										vy[(y+j)/CELL][(x+i)/CELL] += (y-ly)*0.01f;
									}
						}
						else
						{
							create_line(lx, ly, x, y, bsx, bsy, c, get_brush_flags());
						}
						lx = x;
						ly = y;
					}
				}
				else //it is the first click
				{
					//start line tool
					if ((sdl_mod & (KMOD_SHIFT)) && !(sdl_mod & (KMOD_CTRL)))
					{
						lx = x;
						ly = y;
						lb = b;
						lm = 1;//line
					}
					//start box tool
					else if ((sdl_mod & (KMOD_CTRL)) && !(sdl_mod & (KMOD_SHIFT|KMOD_ALT)))
					{
						lx = x;
						ly = y;
						lb = b;
						lm = 2;//box
					}
					//flood fill
					else if ((sdl_mod & (KMOD_CTRL)) && (sdl_mod & (KMOD_SHIFT)) && !(sdl_mod & (KMOD_ALT)))
					{
						if (sdl_mod & (KMOD_CAPS))
							c = 0;
						if (c!=WL_STREAM+100&&c!=SPC_AIR&&c!=SPC_HEAT&&c!=SPC_COOL&&c!=SPC_VACUUM&&!REPLACE_MODE&&c!=SPC_WIND&&c!=SPC_PGRV&&c!=SPC_NGRV)
							flood_parts(x, y, c, -1, -1, get_brush_flags());
						if (c==SPC_HEAT || c==SPC_COOL)
							create_parts(x, y, bsx, bsy, c, get_brush_flags(), 1);
						lx = x;
						ly = y;
						lb = 0;
						lm = 0;
					}
					//sample
					else if (((sdl_mod & (KMOD_ALT)) && !(sdl_mod & (KMOD_SHIFT|KMOD_CTRL))) || b==SDL_BUTTON_MIDDLE)
					{
						if (y>=0 && y<YRES && x>=0 && x<XRES)
						{
							int cr;
							cr = pmap[y][x];
							if (!cr)
								cr = photons[y][x];
							if (cr)
							{
								c = sl = cr&0xFF;
								if (c==PT_LIFE)
									c = sl = (parts[cr>>8].ctype << 8) | c;
							}
							else
							{
								//Something
							}
						}
						lx = x;
						ly = y;
						lb = 0;
						lm = 0;
					}
					else //normal click, spawn element
					{
						//Copy state before drawing any particles (for undo)7
						int cbx, cby, cbi;

						for (cbi=0; cbi<NPART; cbi++)
							cb_parts[cbi] = parts[cbi];

						for (cby = 0; cby<YRES; cby++)
							for (cbx = 0; cbx<XRES; cbx++)
								cb_pmap[cby][cbx] = pmap[cby][cbx];

						for (cby = 0; cby<(YRES/CELL); cby++)
							for (cbx = 0; cbx<(XRES/CELL); cbx++)
							{
								cb_vx[cby][cbx] = vx[cby][cbx];
								cb_vy[cby][cbx] = vy[cby][cbx];
								cb_pv[cby][cbx] = pv[cby][cbx];
								cb_hv[cby][cbx] = hv[cby][cbx];
								cb_bmap[cby][cbx] = bmap[cby][cbx];
								cb_emap[cby][cbx] = emap[cby][cbx];
							}
						create_parts(x, y, bsx, bsy, c, get_brush_flags(), 1);
						lx = x;
						ly = y;
						lb = b;
						lm = 0;
					}
				}
			}
		}
		else
		{
			if (lb && lm) //lm is box/line tool
			{
				c = (lb&1) ? sl : sr;
				su = c;
				if (lm == 1)//line
				{
					if (c!=WL_FAN+100 || lx<0 || ly<0 || lx>=XRES || ly>=YRES || bmap[ly/CELL][lx/CELL]!=WL_FAN)
						create_line(lx, ly, line_x, line_y, bsx, bsy, c, get_brush_flags());
				}
				else//box
					create_box(lx, ly, x, y, c, get_brush_flags());
				lm = 0;
			}
			lb = 0;
		}

		if (load_mode)//draw preview of stamp
		{
			draw_image(vid_buf, load_img, load_x, load_y, load_w, load_h, 128);
			xor_rect(vid_buf, load_x, load_y, load_w, load_h);
		}

		if (save_mode)//draw dotted lines for selection
		{
			xor_rect(vid_buf, save_x, save_y, save_w, save_h);
			da = 51;//draws mouseover text for the message
			db = 269;//the save message
		}

		if (zoom_en!=1 && !load_mode && !save_mode)//draw normal cursor
		{
			render_cursor(vid_buf, mx, my, su, bsx, bsy);
			mousex = mx;
			mousey = my;
		}
#ifdef OGLR
		draw_parts_fbo();
#endif		
		if (zoom_en)
			render_zoom(vid_buf);

		if (da)
			switch (db)//various mouseover messages, da is the alpha
			{
			case 256:
				drawtext(vid_buf, 16, YRES-24, "Add simulation tags.", 255, 255, 255, da*5);
				break;
			case 257:
				drawtext(vid_buf, 16, YRES-24, "Add and remove simulation tags.", 255, 255, 255, da*5);
				break;
			case 258:
				drawtext(vid_buf, 16, YRES-24, "Save the simulation under the current name.", 255, 255, 255, da*5);
				break;
			case 259:
				drawtext(vid_buf, 16, YRES-24, "Save the simulation under a new name.", 255, 255, 255, da*5);
				break;
			case 260:
				drawtext(vid_buf, 16, YRES-24, "Sign into the Simulation Server.", 255, 255, 255, da*5);
				break;
			case 261:
				drawtext(vid_buf, 16, YRES-24, "Sign into the Simulation Server under a new name.", 255, 255, 255, da*5);
				break;
			case 262:
				drawtext(vid_buf, 16, YRES-24, "Find & open a simulation", 255, 255, 255, da*5);
				break;
			case 263:
				drawtext(vid_buf, 16, YRES-24, "Pause the simulation", 255, 255, 255, da*5);
				break;
			case 264:
				drawtext(vid_buf, 16, YRES-24, "Resume the simulation", 255, 255, 255, da*5);
				break;
			case 265:
				drawtext(vid_buf, 16, YRES-24, "Reload the simulation", 255, 255, 255, da*5);
				break;
			case 266:
				drawtext(vid_buf, 16, YRES-24, "Erase all particles and walls", 255, 255, 255, da*5);
				break;
			case 267:
				drawtext(vid_buf, 16, YRES-24, "Change display mode", 255, 255, 255, da*5);
				break;
			case 268:
				drawtext(vid_buf, 16, YRES-24, "Annuit C\245ptis", 255, 255, 255, da*5);
				break;
			case 269:
				drawtext(vid_buf, 16, YRES-24, "Click-and-drag to specify a rectangle to copy (right click = cancel).", 255, 216, 32, da*5);
				break;
			case 270:
				drawtext(vid_buf, 16, YRES-24, "Simulation options", 255, 255, 255, da*5);
				break;
			case 271:
				drawtext(vid_buf, 16, YRES-24, "You're a moderator", 255, 255, 255, da*5);
				break;
			case 272:
				drawtext(vid_buf, 16, YRES-24, "Like/Dislike this save.", 255, 255, 255, da*5);
				break;
			case 273:
				drawtext(vid_buf, 16, YRES-24, "You like this.", 255, 255, 255, da*5);
				break;
			case 274:
				drawtext(vid_buf, 16, YRES-24, "You dislike this.", 255, 255, 255, da*5);
				break;
			case 275:
				drawtext(vid_buf, 16, YRES-24, "You cannot vote on your own save.", 255, 255, 255, da*5);
				break;
			case 276:
				drawtext(vid_buf, 16, YRES-24, "Open a simulation from your hard drive.", 255, 255, 255, da*5);
				break;
			case 277:
				drawtext(vid_buf, 16, YRES-24, "Save the simulation to your hard drive.", 255, 255, 255, da*5);
				break;
			default:
				drawtext(vid_buf, 16, YRES-24, (char *)ptypes[db].descs, 255, 255, 255, da*5);
			}
		if (itc)//message in the middle of the screen, such as view mode changes
		{
			itc--;
			drawtext_outline(vid_buf, (XRES-textwidth(itc_msg))/2, ((YRES/2)-10), itc_msg, 255, 255, 255, itc>51?255:itc*5, 0, 0, 0, itc>51?255:itc*5);
		}
		if (it)//intro message
		{
			it--;
			drawtext(vid_buf, 16, 20, it_msg, 255, 255, 255, it>51?255:it*5);
		}

		if (old_version)
		{
			clearrect(vid_buf, XRES-21-old_ver_len, YRES-24, old_ver_len+9, 17);
			if (is_beta)
			{
				drawtext(vid_buf, XRES-16-old_ver_len, YRES-19, old_ver_msg_beta, 255, 216, 32, 255);
			}
			else
			{
				drawtext(vid_buf, XRES-16-old_ver_len, YRES-19, old_ver_msg, 255, 216, 32, 255);
			}
			drawrect(vid_buf, XRES-19-old_ver_len, YRES-22, old_ver_len+5, 13, 255, 216, 32, 255);
		}
		
		if (svf_messages)
		{
			sprintf(new_message_msg, "You have %d new message%s, Click to view", svf_messages, (svf_messages>1)?"s":"");
			new_message_len = textwidth(new_message_msg);
			
			clearrect(vid_buf, XRES-21-new_message_len, YRES-39, new_message_len+9, 17);
			drawtext(vid_buf, XRES-16-new_message_len, YRES-34, new_message_msg, 255, 186, 32, 255);
			drawrect(vid_buf, XRES-19-new_message_len, YRES-37, new_message_len+5, 13, 255, 186, 32, 255);
		}

		FPS++;
		currentTime = SDL_GetTicks();
		elapsedTime = currentTime-pastFPS;
		if ((FPS>2 || elapsedTime>1000*2/limitFPS) && elapsedTime && FPS*1000/elapsedTime>limitFPS)
		{
			while (FPS*1000/elapsedTime>limitFPS)
			{
				SDL_Delay(1);
				currentTime = SDL_GetTicks();
				elapsedTime = currentTime-pastFPS;
			}
		}
		if (elapsedTime>=1000)
		{
			FPSB = FPS;
			FPS = 0;
			pastFPS = currentTime;
		}

		if (hud_enable)
		{
#ifdef BETA
			sprintf(uitext, "Beta Build %d FPS:%d Parts:%d Gravity:%d Air:%d", BUILD_NUM, FPSB, NUM_PARTS, gravityMode, airMode);
#else
			if (DEBUG_MODE)
				sprintf(uitext, "Build %d FPS:%d Parts:%d Gravity:%d Air:%d", BUILD_NUM, FPSB, NUM_PARTS, gravityMode, airMode);
			else
				sprintf(uitext, "FPS:%d", FPSB);
#endif
			if (REPLACE_MODE)
				strappend(uitext, " [REPLACE MODE]");
			if (sdl_mod&(KMOD_CAPS))
				strappend(uitext, " [CAPS LOCK]");
			if (GRID_MODE)
			{
				char gridtext[15];
				sprintf(gridtext, " [GRID: %d]", GRID_MODE);
				strappend(uitext, gridtext);
			}
#ifdef INTERNAL
			if (vs)
				strappend(uitext, " [FRAME CAPTURE]");
#endif
			quickoptions_tooltip_fade_invert = 255 - (quickoptions_tooltip_fade*20);
			it_invert = 50 - it;
			if(it_invert < 0)
				it_invert = 0;
			if(it_invert > 50)
				it_invert = 50;
			if (sdl_zoom_trig||zoom_en)
			{
				if (zoom_x<XRES/2)
				{
					fillrect(vid_buf, XRES-20-textwidth(heattext), 266, textwidth(heattext)+8, 15, 0, 0, 0, quickoptions_tooltip_fade_invert*0.5);
					drawtext(vid_buf, XRES-16-textwidth(heattext), 270, heattext, 255, 255, 255, quickoptions_tooltip_fade_invert*0.75);
					if (DEBUG_MODE)
					{
						fillrect(vid_buf, XRES-20-textwidth(coordtext), 280, textwidth(coordtext)+8, 13, 0, 0, 0, quickoptions_tooltip_fade_invert*0.5);
						drawtext(vid_buf, XRES-16-textwidth(coordtext), 282, coordtext, 255, 255, 255, quickoptions_tooltip_fade_invert*0.75);
					}
					if (wavelength_gfx)
						draw_wavelengths(vid_buf,XRES-20-textwidth(heattext),265,2,wavelength_gfx);
				}
				else
				{
					fillrect(vid_buf, 12, 266, textwidth(heattext)+8, 15, 0, 0, 0, quickoptions_tooltip_fade_invert*0.5);
					drawtext(vid_buf, 16, 270, heattext, 255, 255, 255, quickoptions_tooltip_fade_invert*0.75);
					if (DEBUG_MODE)
					{
						fillrect(vid_buf, 12, 280, textwidth(coordtext)+8, 13, 0, 0, 0, quickoptions_tooltip_fade_invert*0.5);
						drawtext(vid_buf, 16, 282, coordtext, 255, 255, 255, quickoptions_tooltip_fade_invert*0.75);
					}
					if (wavelength_gfx)
						draw_wavelengths(vid_buf,12,265,2,wavelength_gfx);
				}
			}
			else
			{
				fillrect(vid_buf, XRES-20-textwidth(heattext), 12, textwidth(heattext)+8, 15, 0, 0, 0, quickoptions_tooltip_fade_invert*0.5);
				drawtext(vid_buf, XRES-16-textwidth(heattext), 16, heattext, 255, 255, 255, quickoptions_tooltip_fade_invert*0.75);
				if (DEBUG_MODE)
				{
					fillrect(vid_buf, XRES-20-textwidth(coordtext), 26, textwidth(coordtext)+8, 11, 0, 0, 0, quickoptions_tooltip_fade_invert*0.5);
					drawtext(vid_buf, XRES-16-textwidth(coordtext), 27, coordtext, 255, 255, 255, quickoptions_tooltip_fade_invert*0.75);
				}
				if (wavelength_gfx)
					draw_wavelengths(vid_buf,XRES-20-textwidth(heattext),11,2,wavelength_gfx);
			}
			wavelength_gfx = 0;
			fillrect(vid_buf, 12, 12, textwidth(uitext)+8, 15, 0, 0, 0, it_invert*2.5);
			drawtext(vid_buf, 16, 16, uitext, 32, 216, 255, it_invert * 4);

		}

		if (console_mode)
		{
#ifdef LUACONSOLE
			char *console;
			sys_pause = 1;
			console = console_ui(vid_buf, console_error, console_more);
			console = mystrdup(console);
			strcpy(console_error,"");
			if (process_command_lua(vid_buf, console, console_error)==-1)
			{
				free(console);
				break;
			}
			free(console);
#else
			char *console;
			sys_pause = 1;
			console = console_ui(vid_buf, console_error, console_more);
			console = mystrdup(console);
			strcpy(console_error,"");
			if (process_command_old(vid_buf, console, console_error)==-1)
			{
				free(console);
				break;
			}
			free(console);
#endif
		}

		sdl_blit(0, 0, XRES+BARSIZE, YRES+MENUSIZE, vid_buf, XRES+BARSIZE);

		//Setting an element for the stick man
		if (player.spwn==0)
		{
			if ((sr<PT_NUM && ptypes[sr].falldown>0) || sr==SPC_AIR || sr == PT_NEUT || sr == PT_PHOT || sr == PT_LIGH)
				player.elem = sr;
			else
				player.elem = PT_DUST;
		}
		if (player2.spwn==0)
		{
			if ((sr<PT_NUM && ptypes[sr].falldown>0) || sr==SPC_AIR || sr == PT_NEUT || sr == PT_PHOT || sr == PT_LIGH)
				player2.elem = sr;
			else
				player2.elem = PT_DUST;
		}
	}
	save_presets(0);
	
	SDL_CloseAudio();
	http_done();
	gravity_cleanup();
#ifdef LUACONSOLE
	luacon_close();
#endif
#ifdef PTW32_STATIC_LIB
    pthread_win32_thread_detach_np();
    pthread_win32_process_detach_np();
#endif
	return 0;
}
#endif