I really don't like how the only way to return with an error from ParseFloatProperty is via an exception >_>
Also do a range check on airTemp only if isValid is true, otherwise it's uninitialized.
This website API was created to enable TPTMP to prove the identity of connecting users, and while TPTMP works fine without explicit support for this from the game, it has to resort to parsing powder.pref. This is not only ugly but also likely to be disallowed by the next version of the script manager. This new script manager will probably come after 97.0, so it's okay for it to rely on a game feature that won't be available until 97.0.
get_normal_interp is given a PHOT and scans a line section starting from the PHOT, extended in the direction of its velocity, to determine the surface normal of the surface that is reflecting the PHOT. It uses is_boundary to detect "boundaries" on this line section, defined as one "blocking" cell with at least one "non-blocking" non-diagonal neighbour. It never actually makes sure the position it passes to is_boundary is within the simulation area, so I assume is_boundary is expected to handle this correctly.
Plot twist: it does not. It delegates checking whether a cell is "blocking" (defined as something PHOT would normally fail to move into as per eval_move, but GLAS and BLGA are handled specially) to is_blocking. is_blocking returns true for cells beyond the simulation area (as eval_move returns "no move" for such cells). Once is_boundary sees that the cell it's been given is blocking, it then proceeds to check whether any of its non-diagonal neighbours might be non-blocking. In most cases, non-diagonal neighbours of an out-of-bounds cell are also out of bounds and are thus blocking, but if the cell is_boundary is given is in the innermost layer of out-of-bounds cells, just beyond the simulation area, then it has a neighbour that is in bounds, and that one may not block PHOT. The takeaway is that out of bounds cells can indeed be boundaries, as far as is_boundary is concerned.
This is a problem because get_normal_interp's line section can easily reach beyond the simulation area if the PHOT's velocity is high enough, and if it finds a boundary along this line section, it immediately stops looking and passes its position to photoelectric_effect, which then uses this potentially out-of-bounds position to index pmap. A position with y = -1 causes photoelectric_effect to read from the last few slots of parts data that it then interprets as pmap entries, which then may direct it to particles to spark that are beyond parts. This eventually crashes.
This commit doesn't fix is_boundary's definition of boundaries, but it stops get_normal_interp looking at cells beyond the simulation area.
The crash is difficult to reproduce because there have to be many particles in the simulation for the very last slots of parts to be in use, and for them to point to memory that isn't accessible. PHOT also has to survive a try_move beyond the simulation area first (otherwise the reflection code isn't even run), which requires it to start from EHOLE. I have no idea why this is so. Reproduce the out of bounds read in photoelectric_effect with
break Simulation.cpp:2934 if nx < 0
in gdb and executing the following Lua code:
sim.clearSim()
tpt.set_wallmap(55, 44, 12)
local i = sim.partCreate(-1, 223, 178, 31)
sim.partProperty(i, "vx", -300)
sim.partProperty(i, "vy", 0)
sim.framerender(1)
This is how we'll handle systems where the cert bundle and cert directory is stored where mbedtls doesn't expect it.
Also update tpt-libs to get new curl and mbedtls.
Also Factor out app constants that mods might change into Meson options and clean up format::URLEncode in the process, convert app and document icon data in arrays to actual images, actualize AppStream data for possible future packaging, add alternative command line format for opening filesystem saves and ptsave URLs, fix a memory leak in Platform::GetCwd, and add format::URLDecode.
This made it possible to get rid of two GameSave constructors.
Also clean up Client::LoadSaveFile, Client::ReadFile, and Client::WriteFile in the process, and remove unused SaveRenderer::Render
Also restructure meson.build and the ghactions workflow a bit, and enable -ffunction-sections and -fdata-sections.
Note that starcatcher uploads have not been tested and most likely don't work.
Also fix a few bugs and other weirdness in Platform::DirectorySearch. Empty string paths would crash and filenames with 4 or fewer characters wouldn't register.
This fixes bugs like "type\0hello mom" being a property name sim.partProperty accepts and half-fixes bugs like text formatting codes making gfx.drawText exit prematurely.
Currently it detects presence of v incorrectly (via if (ID(type))) and thus rewrites v = 0 to v = -1, even if 0 is actually what you want. Especially problematic if you're trying to spawn GOL (so LIFE(ctype=0)).
Also fix the first mouse click not being detected on windows with sdl 2.0.20. Apparenlty, we need SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH set to 1 for it to be detected.
If the built-in update function is allowed to run, it can change the particle's type. The code path assumes that there is a Lua update function to call on the particle, but this type change may break this assumption and cause the code to call the update function of an element that doesn't even have one, producing a weird error message with no line number.
