public override void Render(Graphics graphics, Camera camera)
{
for (var y = 1; y <= map.Height; y++)
{
for (var x = 1; x <= map.Width; x++)
{
var index = Indices[x - 1, y - 1]; //-1 because indices are zero indexed.
var tileset = Tileset.TilesetForPosition(index, map.Tilesets); //Tileset the index belongs to.
var subTexturePosition =
index - tileset.FirstGid; //Resets position to start at 0 for the subtexture positioning.
if (subTexturePosition <= -1)
{
continue; //Don't render empty tiles.
}
var worldpos =
Isometric.IsometricToWorld(new Point(x - 1, y - 1), map); //Isometric Projection to world coords.
//Culling
if (worldpos.X > camera.Bounds.X + camera.Bounds.Width || //Right side
worldpos.Y > camera.Bounds.Y + camera.Bounds.Height || //Bottom
worldpos.X < camera.Bounds.X - map.LargestTileSize.X || //Left
worldpos.Y < camera.Bounds.Y - map.LargestTileSize.Y) //Top
{
continue; //Don't draw l
}
var columnRounding = subTexturePosition % tileset.Columns;
var sourceRect = new RectangleF //Subposition in texture.
{
X = (columnRounding * tileset.TileWidth),
Y = (subTexturePosition / tileset.Columns) *
tileset.TileHeight, //Y needs rounding.
Width = tileset.TileWidth,
Height = tileset.TileHeight
};
//Finally draw.
graphics.Batcher.Draw(tileset.Texture, worldpos, sourceRect, Color.White, 0, new Vector2(0, 0), 1, SpriteEffects.None, 0);
}
}
}
