使用tmx解析器和SDL進行2d圖塊渲染

Question

我正在使用tmx-parser解析地圖（http://code.google.com）後獲取在Tiled（http://mapeditor.org）中創建的地圖進行渲染的.com/p/TMX-解析器/）。我已經在正確的位置呈現瓷磚，但我似乎無法讓它從瓷磚組中呈現正確的瓷磚。我使用來自平鋪的isometric_grass_and_water示例來測試它。

這是我的渲染代碼。

void Map::RenderMapIsometric(SDL_Surface *SurfaceDest) 
    { 
     for (int i = 0; i < map->GetNumLayers(); ++i) 
     { 
      // Get a layer. 
     this->layer = map->GetLayer(i); 

     for (int x = 0; x < layer->GetWidth(); ++x) 
     { 
      for (int y = 0; y < layer->GetHeight(); ++y) 
      { 
       int CurTile = layer->GetTileGid(x, y); 

       if(CurTile == 0) 
       { 
        continue; 
       } 

       int tileset_col = (CurTile % (TilesetWidth/this->tileset->GetTileWidth())); 
       int tileset_row = (CurTile/(TilesetWidth/this->tileset->GetTileWidth())); 

       std::cout << CurTile << std::endl; 

       SDL_Rect rect_CurTile; 
       rect_CurTile.x = (this->tileset->GetMargin() + (this->tileset->GetTileWidth() + this->tileset->GetSpacing()) * tileset_col); 
       rect_CurTile.y = (this->tileset->GetMargin() + (this->tileset->GetTileHeight() + this->tileset->GetSpacing()) * tileset_row); 
       rect_CurTile.w = this->tileset->GetTileWidth(); 
       rect_CurTile.h = this->tileset->GetTileHeight(); 

       int DrawX = (x * this->tileset->GetTileWidth()/2) + (y * this->tileset->GetTileWidth()/2); 
       int DrawY = (y * this->tileset->GetTileHeight()/2) - (x * this->tileset->GetTileHeight()/2); 

       apply_surfaceClip(DrawX, DrawY, surf_Tileset, SurfaceDest, &rect_CurTile); 
      } 
     } 
    } 
} 

任何人都可以指出我做錯了什麼？

Answer 1

我找到了答案後，這裏的一些蠻力是改變工作代碼，如果任何人都需要它： PS：Num_Of_Cols是一回事（TilesetWidth/TileWidth）

void Map::RenderMapIsometric(SDL_Surface *SurfaceDest) 
{ 

for (int i = 0; i < map->GetNumLayers(); ++i) 
    { 
     // Get a layer. 
     this->layer = map->GetLayer(i); 

    for (int x = 0; x < layer->GetWidth(); ++x) 
    { 
     for (int y = 0; y < layer->GetHeight(); ++y) 
     { 
      int CurTile = layer->GetTileGid(x, y); 

      if(CurTile == 0) 
      { 
       continue; 
      } 

      //CurTile = tileset->GetFirstGid() + CurTile; 
      CurTile--; 

      int tileset_col = (CurTile % Num_Of_Cols); 
      int tileset_row = (CurTile/Num_Of_Cols); 

      SDL_Rect rect_CurTile; 
      rect_CurTile.x = (this->tileset->GetMargin() + (this->tileset->GetTileWidth() + this->tileset->GetSpacing()) * tileset_col); 
      rect_CurTile.y = (this->tileset->GetMargin() + (this->tileset->GetTileHeight() + this->tileset->GetSpacing()) * tileset_row); 
      rect_CurTile.w = this->tileset->GetTileWidth(); 
      rect_CurTile.h = this->tileset->GetTileHeight(); 

      int DrawX = (x * this->tileset->GetTileWidth()/2) + (y * this->tileset->GetTileWidth()/2); 
      int DrawY = (y * this->tileset->GetTileHeight()/2) - (x * this->tileset->GetTileHeight()/2); 

      apply_surfaceClip(DrawX, DrawY, surf_Tileset, SurfaceDest, &rect_CurTile); 
     } 
    } 
} 
}