THAnimation* l_map_updateblueprint_getnextanim(lua_State *L, int& iIndex)
{
THAnimation *pAnim;
lua_rawgeti(L, 10, iIndex);
if(lua_type(L, -1) == LUA_TNIL)
{
lua_pop(L, 1);
pAnim = luaT_new(L, THAnimation);
lua_pushvalue(L, luaT_upvalueindex(2));
lua_setmetatable(L, -2);
lua_createtable(L, 0, 2);
lua_pushvalue(L, 1);
lua_setfield(L, -2, "map");
lua_pushvalue(L, 11);
lua_setfield(L, -2, "animator");
lua_setfenv(L, -2);
lua_rawseti(L, 10, iIndex);
}
else
{
pAnim = luaT_testuserdata<THAnimation>(L, -1, luaT_upvalueindex(2));
lua_pop(L, 1);
}
++iIndex;
return pAnim;
}
static int l_load_music_async(lua_State *L)
{
size_t iLength;
const uint8_t *pData = luaT_checkfile(L, 1, &iLength);
luaL_checktype(L, 2, LUA_TFUNCTION);
SDL_RWops* rwop = SDL_RWFromConstMem(pData, (int)iLength);
lua_settop(L, 2);
load_music_async_t *async = luaT_new(L, load_music_async_t);
lua_pushlightuserdata(L, async);
lua_pushvalue(L, -2);
lua_settable(L, LUA_REGISTRYINDEX);
async->L = L;
async->music = nullptr;
async->rwop = rwop;
async->err = nullptr;
lua_createtable(L, 2, 0);
lua_pushthread(L);
lua_rawseti(L, -2, 1);
lua_pushvalue(L, 2);
lua_rawseti(L, -2, 2);
luaT_stdnew<music_t>(L, luaT_environindex, true);
lua_pushvalue(L, 1);
luaT_setenvfield(L, -2, "data");
lua_rawseti(L, -2, 3);
lua_settable(L, LUA_REGISTRYINDEX);
/*
In registry:
[light userdata async] -> [full userdata async]
[full userdata async] -> {
[1] = callback_thread,
[2] = callback_function,
[3] = empty music_t userdata,
}
New thread will load music, and inform the main loop, which will then
call the callback and remove the new entries from the registry.
*/
SDL_CreateThread(load_music_async_thread, "music_thread", async);
return 0;
}