added TileMaps to TSE

TSE_Core/src/elements/TileSet.cpp

@@ -33,3 +33,24 @@ void TSE::TileSet::GetSpriteAt(int x, int y, Sprite &s)
 
     s = Sprite(tex, Rect(startpos, endpos));
 }
+
+int TSE::TileSet::GetSpriteIdAt(int x, int y)
+{
+    if(x < 0 || x >= resx || y < 0 || y >= resy)
+    {
+        TSE_ERROR("The sprite you are trying to access is out of range");
+        return -1;
+    }
+
+    return y * resx + x;
+}
+
+uint TSE::TileSet::GetTextueID()
+{
+    return tex->GetTextureId();
+}
+
+TSE::Vector2 TSE::TileSet::GetCount()
+{
+    return Vector2(resx, resy);
+}