int LuaCreateAnimation(lua_State* _State) {
struct Sprite* _Sprite = NULL;
const char* _File = luaL_checkstring(_State, 1);\
struct Resource* _Resource = ResourceGet(_File);
SDL_Point _Pos = {0, 0};
_Sprite = CreateSprite(ResourceGetData(_Resource), 0, &_Pos);
LuaCtor(_State, _Sprite, LOBJ_SPRITE);
return 1;
}
struct Sprite* ConstructSprite(struct Sprite* _Sprite, struct Resource* _Image, int _Layer, const SDL_Point* _TilePos) {
SDL_Texture* _Texture = ResourceGetData(_Image);
if(_Texture == NULL) {
free(_Sprite);
return NULL;
}
_Sprite->Image = _Image;
_Sprite->TilePos = *_TilePos;
_Sprite->Rect.x = 0;
_Sprite->Rect.y = 0;
SDL_QueryTexture(_Texture, NULL, NULL, &_Sprite->Rect.w, &_Sprite->Rect.h);
_Sprite->SpritePos.w = _Sprite->Rect.w;
_Sprite->SpritePos.h = _Sprite->Rect.h;
return _Sprite;
}
int LuaAnimationCreateFrames(lua_State* _State) {
int _Width = luaL_checkinteger(_State, 1);
int _Height = luaL_checkinteger(_State, 2);
int _FrameCt = luaL_checkinteger(_State, 3);
const char* _KeyName = luaL_checkstring(_State, 4);
struct AnimationLoading* _Data = NULL;
struct Resource* _Image = NULL;
lua_pushvalue(_State, LUA_REGISTRYINDEX);
lua_pushstring(_State, ANIM_LUASTR);
lua_rawget(_State, -2);
_Data = lua_touserdata(_State, -1);
if(_Data->ImageName == NULL)
return luaL_error(_State, "Animation has no image loaded.");
_Image = ResourceGet(_Data->ImageName);
if(SDL_QueryTexture(ResourceGetData(_Image), NULL, NULL, &_Data->Dims.x, &_Data->Dims.y) != 0) {
luaL_error(_State, SDL_GetError());
DestroyResource(_Image);
return 0;
}
DestroyResource(_Image);
if(_FrameCt * _Width > _Data->Dims.x || _FrameCt * _Height > _Data->Dims.y)
return luaL_error(_State, "Frame exceeds dimensions.");
for(int i = _Data->FrameSz; i < _FrameCt && i < ANIM_MAXFRAMES; ++i) {
_Data->Frames[i + _Data->FrameSz].Speed = _Data->DefaultSpeed;
_Data->Frames[i + _Data->FrameSz].Rect.x = i * _Width;
_Data->Frames[i + _Data->FrameSz].Rect.y = i * _Height;
_Data->Frames[i + _Data->FrameSz].Rect.w = _Width;
_Data->Frames[i + _Data->FrameSz].Rect.h = _Height;
++_Data->FrameSz;
}
_Data->y = _Data->y + _Height;
_Data->Keys[_Data->KeySz].Name = calloc(strlen(_KeyName) + 1, sizeof(char));
strcpy((char*)_Data->Keys[_Data->KeySz].Name, _KeyName);
++_Data->KeySz;
return 0;
}
int SpriteOnDraw(const struct Sprite* _Sprite) {
return SDL_RenderCopy(g_Renderer, ResourceGetData(_Sprite->Image), &_Sprite->Rect, &_Sprite->SpritePos);
}
