Lua API:
onSpritePlacement(spriteId, centerX, centerY)
onGirderPlacement(frameIdx, centerX, centerY)
onRubberPlacement(frameIdx, centerX, centerY)
#ifndef _FPCRTL_H_
#define _FPCRTL_H_
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <math.h>
#include "SysUtils.h"
#include "system.h"
#include "misc.h"
#include "fileio.h"
#include "pmath.h"
#ifndef EMSCRIPTEN
#if __APPLE__
#define main SDL_main
#endif
#include "GL/glew.h"
#endif
#define fpcrtl_memcpy memcpy
#define luapas_lua_gettop lua_gettop
#define luapas_lua_close lua_close
#define luapas_lua_createtable lua_createtable
#define luapas_lua_error lua_error
#define luapas_lua_gc lua_gc
#define luapas_lua_getfield lua_getfield
#define luapas_lua_objlen lua_objlen
#define luapas_lua_call lua_call
#define luapas_lua_pcall lua_pcall
#define luapas_lua_pushboolean lua_pushboolean
#define luapas_lua_pushcclosure lua_pushcclosure
#define luapas_lua_pushinteger lua_pushinteger
#define luapas_lua_pushnil lua_pushnil
#define luapas_lua_pushnumber lua_pushnumber
#define luapas_lua_pushlstring lua_pushlstring
#define luapas_lua_pushstring lua_pushstring
#define luapas_lua_pushvalue lua_pushvalue
#define luapas_lua_rawgeti lua_rawgeti
#define luapas_lua_setfield lua_setfield
#define luapas_lua_settop lua_settop
#define luapas_lua_toboolean lua_toboolean
#define luapas_lua_tointeger lua_tointeger
#define luapas_lua_tolstring lua_tolstring
#define luapas_lua_tonumber lua_tonumber
#define luapas_lua_type lua_type
#define luapas_lua_typename lua_typename
#define luapas_luaL_argerror luaL_argerror
#define luapas_luaL_checkinteger luaL_checkinteger
#define luapas_luaL_checklstring luaL_checklstring
#define luapas_luaL_loadfile luaL_loadfile
#define luapas_luaL_loadstring luaL_loadstring
#define luapas_luaL_newstate luaL_newstate
#define luapas_luaL_optinteger luaL_optinteger
#define luapas_luaL_optlstring luaL_optlstring
#define luapas_luaL_prepbuffer luaL_prepbuffer
#define luapas_luaL_ref luaL_ref
#define luapas_luaL_unref luaL_unref
#define luapas_luaopen_base luaopen_base
#define luapas_luaopen_math luaopen_math
#define luapas_luaopen_string luaopen_string
#define luapas_luaopen_table luaopen_table
#define luapas_lua_load lua_load
#define sdlh_IMG_Load IMG_Load
#define sdlh_IMG_Load_RW IMG_Load_RW
#ifndef EMSCRIPTEN
#define sdlh_Mix_AllocateChannels Mix_AllocateChannels
#define sdlh_Mix_CloseAudio Mix_CloseAudio
#define sdlh_Mix_FadeInChannelTimed Mix_FadeInChannelTimed
#define sdlh_Mix_FadeInMusic Mix_FadeInMusic
#define sdlh_Mix_FadeOutChannel Mix_FadeOutChannel
#define sdlh_Mix_FreeChunk Mix_FreeChunk
#define sdlh_Mix_FreeMusic Mix_FreeMusic
#define sdlh_Mix_HaltChannel Mix_HaltChannel
#define sdlh_Mix_HaltMusic Mix_HaltMusic
#define sdlh_Mix_LoadMUS Mix_LoadMUS
#define sdlh_Mix_LoadMUS_RW Mix_LoadMUS_RW
#define sdlh_Mix_LoadWAV_RW Mix_LoadWAV_RW
#define sdlh_Mix_OpenAudio Mix_OpenAudio
#define sdlh_Mix_PauseMusic Mix_PauseMusic
#define sdlh_Mix_PlayChannelTimed Mix_PlayChannelTimed
#define sdlh_Mix_Playing Mix_Playing
#define sdlh_Mix_ResumeMusic Mix_ResumeMusic
#define sdlh_Mix_Volume Mix_Volume
#define sdlh_Mix_VolumeMusic Mix_VolumeMusic
#else
#define sdlh_Mix_AllocateChannels stub_Mix_AllocateChannels
#define sdlh_Mix_CloseAudio stub_Mix_CloseAudio
#define sdlh_Mix_FadeInChannelTimed stub_Mix_FadeInChannelTimed
#define sdlh_Mix_FadeInMusic stub_Mix_FadeInMusic
#define sdlh_Mix_FadeOutChannel stub_Mix_FadeOutChannel
#define sdlh_Mix_FreeChunk stub_Mix_FreeChunk
#define sdlh_Mix_FreeMusic stub_Mix_FreeMusic
#define sdlh_Mix_HaltChannel stub_Mix_HaltChannel
#define sdlh_Mix_HaltMusic stub_Mix_HaltMusic
#define sdlh_Mix_LoadMUS stub_Mix_LoadMUS
#define sdlh_Mix_LoadMUS_RW stub_Mix_LoadMUS_RW
#define sdlh_Mix_LoadWAV_RW stub_Mix_LoadWAV_RW
#define sdlh_Mix_OpenAudio stub_Mix_OpenAudio
#define sdlh_Mix_PauseMusic stub_Mix_PauseMusic
#define sdlh_Mix_PlayChannelTimed stub_Mix_PlayChannelTimed
#define sdlh_Mix_Playing stub_Mix_Playing
#define sdlh_Mix_ResumeMusic stub_Mix_ResumeMusic
#define sdlh_Mix_Volume stub_Mix_Volume
#define sdlh_Mix_VolumeMusic stub_Mix_VolumeMusic
#endif
#define sdlh_SDL_ConvertSurface SDL_ConvertSurface
#define sdlh_SDL_CreateRGBSurface SDL_CreateRGBSurface
#define sdlh_SDL_CreateThread SDL_CreateThread
#define sdlh_SDL_Delay SDL_Delay
#define sdlh_SDL_EnableKeyRepeat SDL_EnableKeyRepeat
#define sdlh_SDL_EnableUNICODE SDL_EnableUNICODE
#define sdlh_SDL_FillRect SDL_FillRect
#define sdlh_SDL_FreeSurface SDL_FreeSurface
#define sdlh_SDL_GetError SDL_GetError
#define sdlh_SDL_GetKeyName SDL_GetKeyName
#define sdlh_SDL_GetKeyState SDL_GetKeyState
#define sdlh_SDL_GetMouseState SDL_GetMouseState
#define sdlh_SDL_GetRGBA SDL_GetRGBA
#define sdlh_SDL_GetTicks SDL_GetTicks
#define sdlh_SDL_GL_SetAttribute SDL_GL_SetAttribute
#define sdlh_SDL_GL_SwapBuffers SDL_GL_SwapBuffers
#define sdlh_SDL_Init SDL_Init
#define sdlh_SDL_InitSubSystem SDL_InitSubSystem
#define sdlh_SDL_JoystickClose SDL_JoystickClose
#define sdlh_SDL_JoystickEventState SDL_JoystickEventState
#define sdlh_SDL_JoystickName SDL_JoystickName
#define sdlh_SDL_JoystickNumAxes SDL_JoystickNumAxes
#define sdlh_SDL_JoystickNumButtons SDL_JoystickNumButtons
#define sdlh_SDL_JoystickNumHats SDL_JoystickNumHats
#define sdlh_SDL_JoystickOpen SDL_JoystickOpen
#define sdlh_SDL_LockSurface SDL_LockSurface
#define sdlh_SDL_MapRGB SDL_MapRGB
#define sdlh_SDL_MapRGBA SDL_MapRGBA
#define sdlh_SDL_NumJoysticks SDL_NumJoysticks
#define sdlh_SDL_PeepEvents SDL_PeepEvents
#define sdlh_SDL_PumpEvents SDL_PumpEvents
#define sdlh_SDL_Quit SDL_Quit
#define sdlh_SDL_RWFromFile SDL_RWFromFile
#define sdlh_SDL_SetColorKey SDL_SetColorKey
#define sdlh_SDL_SetVideoMode SDL_SetVideoMode
#define sdlh_SDL_WaitThread SDL_WaitThread
#define sdlh_SDL_CreateMutex SDL_CreateMutex
#define sdlh_SDL_DestroyMutex SDL_DestroyMutex
#define SDL_LockMutex SDL_mutexP
#define SDL_UnlockMutex SDL_mutexV
#ifndef EMSCRIPTEN
#define sdlh_SDL_ShowCursor SDL_ShowCursor
#else
#define sdlh_SDL_ShowCursor SDL_ShowCursor_patch
#endif
#define sdlh_SDL_UnlockSurface SDL_UnlockSurface
#define sdlh_SDL_UpperBlit SDL_UpperBlit
#define sdlh_SDL_VideoDriverName SDL_VideoDriverName
#define sdlh_SDL_WarpMouse SDL_WarpMouse
#define sdlh_SDL_WM_SetCaption SDL_WM_SetCaption
#define sdlh_SDL_WM_SetIcon SDL_WM_SetIcon
#define sdlh_SDLNet_AddSocket SDLNet_AddSocket
#define sdlh_SDLNet_AllocSocketSet SDLNet_AllocSocketSet
#define sdlh_SDLNet_CheckSockets SDLNet_CheckSockets
#define sdlh_SDLNet_FreeSocketSet SDLNet_FreeSocketSet
#define sdlh_SDLNet_Init SDLNet_Init
#define sdlh_SDLNet_Quit SDLNet_Quit
#define sdlh_SDLNet_ResolveHost SDLNet_ResolveHost
#define sdlh_SDLNet_TCP_Close SDLNet_TCP_Close
#define sdlh_SDLNet_TCP_Open SDLNet_TCP_Open
#define sdlh_SDLNet_TCP_Recv SDLNet_TCP_Recv
#define sdlh_SDLNet_TCP_Send SDLNet_TCP_Send
#define sdlh_TTF_Init TTF_Init
#define sdlh_TTF_OpenFont TTF_OpenFont
#define sdlh_TTF_OpenFontRW TTF_OpenFontRW
#define sdlh_TTF_Quit TTF_Quit
#define sdlh_TTF_RenderUTF8_Blended TTF_RenderUTF8_Blended
#define sdlh_TTF_RenderUTF8_Solid TTF_RenderUTF8_Solid
#define sdlh_TTF_SetFontStyle TTF_SetFontStyle
#define sdlh_TTF_SizeUTF8 TTF_SizeUTF8
#define uphysfslayer_physfsReaderSetBuffer physfsReaderSetBuffer
#define uphysfslayer_physfsReader physfsReader
#define uphysfslayer_hedgewarsMountPackage hedgewarsMountPackage
#define uphysfslayer_hedgewarsMountPackages hedgewarsMountPackages
#define uphysfslayer_PHYSFSRWOPS_openRead PHYSFSRWOPS_openRead
#define uphysfslayer_PHYSFSRWOPS_openWrite PHYSFSRWOPS_openWrite
#define _strconcat fpcrtl_strconcat
#define _strappend fpcrtl_strappend
#define _strprepend fpcrtl_strprepend
#define _strcompare fpcrtl_strcompare
#define _strncompare fpcrtl_strncompare
#define _strcomparec fpcrtl_strcomparec
#define _chrconcat fpcrtl_chrconcat
#define _pchar fpcrtl_pchar
#define _strconcatA fpcrtl_strconcatA
#define _strncompareA fpcrtl_strncompareA
#define _strappendA fpcrtl_strappendA
// hooks are implemented in javascript
void start_hook(void);
void mainloop_hook(void);
void clear_filelist_hook(void);
void add_file_hook(const char* ptr);
void idb_loader_hook();
void showcursor_hook();
void hidecursor_hook();
void drawworld_init_hook();
#endif