/// <summary>
/// Generates the tilemap vertices.
/// </summary>
/// <returns>Generates the vertex and index data for the grid used for rendering the tilemap.</returns>
private static (VertexPositionTextureColor[] vertexData, ushort[] indexData) GenerateTilemapVertices()
{
var iindex = 0;
var vertexData = new VertexPositionTextureColor[4 * (Configuration.ChunkWidth + 1) * (Configuration.ChunkHeight + 1)];
var indexData = new ushort[6 * (Configuration.ChunkWidth + 1) * (Configuration.ChunkHeight + 1)];
for (var y = 0; y < Configuration.ChunkHeight + 1; y++)
{
for (var x = 0; x < Configuration.ChunkWidth + 1; x++)
{
var vindex = 4 * (y * (Configuration.ChunkWidth + 1) + x);
vertexData[vindex] = new VertexPositionTextureColor(new Vector2(x * Configuration.TileSize, y * Configuration.TileSize), new Vector2(0f, 0f));
vertexData[vindex + 1] = new VertexPositionTextureColor(new Vector2((x + 1) * Configuration.TileSize, y * Configuration.TileSize), new Vector2(1f, 0f));
vertexData[vindex + 2] = new VertexPositionTextureColor(new Vector2(x * Configuration.TileSize, (y + 1) * Configuration.TileSize), new Vector2(0f, 1f));
vertexData[vindex + 3] = new VertexPositionTextureColor(new Vector2((x + 1) * Configuration.TileSize, (y + 1) * Configuration.TileSize), new Vector2(1f, 1f));
indexData[iindex++] = (ushort)vindex;
indexData[iindex++] = (ushort)(vindex + 1);
indexData[iindex++] = (ushort)(vindex + 2);
indexData[iindex++] = (ushort)(vindex + 2);
indexData[iindex++] = (ushort)(vindex + 1);
indexData[iindex++] = (ushort)(vindex + 3);
}
}
return(vertexData, indexData);
}
public void Draw(ITexture2D Texture, Rectangle Rectangle, Rectangle RectangleSource, Color Color)
{
Vector2 uvMin = new Vector2(RectangleSource.Left / Texture.Width, RectangleSource.Top / Texture.Height);
Vector2 uvMax = new Vector2(RectangleSource.Right / Texture.Width, RectangleSource.Bottom / Texture.Height);
var a = new VertexPositionTextureColor(new Vector3(Rectangle.X, Rectangle.Y, 0), uvMin, Color);
var b = new VertexPositionTextureColor(new Vector3(Rectangle.Right, Rectangle.Y, 0), new Vector2(uvMax.X, uvMin.Y), Color);
var c = new VertexPositionTextureColor(new Vector3(Rectangle.Right, Rectangle.Bottom, 0), uvMax, Color);
var d = new VertexPositionTextureColor(new Vector3(Rectangle.X, Rectangle.Bottom, 0), new Vector2(uvMin.X, uvMax.Y), Color);
AddQuad(new Quad(Texture, a, b, c, d));
}
