/// <summary>
/// Loads a tile map from a bitmap
/// </summary>
/// <param name="bitmap">The bitmap to create a tile map from.</param>
public static void LoadTileMap(Bitmap image, int tileWidth, int tileHeight)
{
// Get the columns and row amount for the tile grid
int cols = image.Width / tileWidth;
int rows = image.Height / tileHeight;
// Create a new texture grid
ResTexture[,] map = new ResTexture[cols, rows];
// Iterate through columns
for (int col = 0; col < cols; col++)
{
// Iterate through rows
for (int row = 0; row < rows; row++)
{
// Copy image part rectangle
Rectangle rect = new Rectangle(col * tileWidth, row * tileHeight, tileWidth, tileHeight);
// Create tile texture
map[col, row] = new ResTexture(image.Clone(rect, image.PixelFormat));
}
}
// Add tile map
_tileMaps.Add(map);
}
/// <summary>
/// Loads a texture to the texture list
/// </summary>
/// <param name="image">The bitmap image used as a texture</param>
/// <param name="id">The id of the texture.</param>
public static void LoadTexture(PixelMap image, int id)
{
// If the key already exists
if (_sprites.ContainsKey(id))
{
// Dispose of old texture
_sprites[id].Dispose();
// Create a new texture
_sprites[id] = new ResTexture(image);
}
else // Add a texture to the list
{
_sprites.Add(id, new ResTexture(image));
}
}
/// <summary>
/// Constructs a new quad.
/// </summary>
/// <param name="textureId"></param>
/// <param name="vertices"></param>
/// <param name="textureCoordinates"></param>
/// <param name="color"></param>
public Quad(ResTexture texture, PointF position, PointF scale, float angle, Color color)
{
_textureId = texture.TextureId;
_color = color;
// Set vertices.
_vertices[0] = new PointF(position.X, position.Y);
_vertices[1] = new PointF(texture.TextureSize + _vertices[0].X, position.Y);
_vertices[2] = new PointF(texture.TextureSize + _vertices[0].X, texture.TextureSize + _vertices[0].Y);
_vertices[3] = new PointF(position.X, texture.TextureSize + _vertices[0].Y);
// Set texture coordinates.
_textureCoordinates[0] = new PointF(0.0f, 0.0f);
_textureCoordinates[1] = new PointF(scale.X, 0.0f);
_textureCoordinates[2] = new PointF(scale.X, scale.Y);
_textureCoordinates[3] = new PointF(0.0f, scale.Y);
}
/// <summary>
/// Stores a sprite in a cached batch.
/// </summary>
/// <param name="id">The texture resource id.</param>
/// <param name="x">The horizontal coordinate.</param>
/// <param name="y">The vertical coordinate.</param>
/// <param name="color">The blend color.</param>
public static void DrawSpriteCached(int id, int x, int y, Color color)
{
// If the sprite does not exist, return.
if (_sprites.ContainsKey(id) == false)
{
return;
}
// Get the resource.
ResTexture texture = _sprites[id];
// If the texture is empty return.
if (texture == null)
{
return;
}
// Add a textured quad.
_quads.Add(new Quad(texture, new PointF(x, y), new PointF(1, 1), 0, color));
}
/// <summary>
/// Draws a sprite.
/// </summary>
/// <param name="id">The texture resource id.</param>
/// <param name="x">The horizontal coordinate.</param>
/// <param name="y">The vertical coordinate.</param>
/// <param name="color">The blend color.</param>
public static void DrawSprite(int id, int x, int y, Color color)
{
// If the sprite does not exist, return.
if (_sprites.ContainsKey(id) == false)
{
return;
}
// Get the resource.
ResTexture texture = _sprites[id];
// If the texture is empty return.
if (texture == null)
{
return;
}
// Add a textured quad.
Quad quad = new Quad(texture, new PointF(x, y), new PointF(1, 1), 0, color);
OpenGL.glEnable(GLOption.Texture2D);
OpenGL.glPolygonMode(GLPolygonFaces.Back, GLPolygonMode.Fill);
OpenGL.glBindTexture(GLTexture.Texture2D, quad.TextureId);
OpenGL.glBegin(GLPrimative.Quads);
OpenGL.glColor4(quad.Color);
OpenGL.glTexCoord2f(quad.TextureCoordinates[0].X, quad.TextureCoordinates[0].Y);
OpenGL.glVertex2f(quad.Vertices[0].X - _offsetX, quad.Vertices[0].Y - _offsetY);
OpenGL.glTexCoord2f(quad.TextureCoordinates[1].X, quad.TextureCoordinates[1].Y);
OpenGL.glVertex2f(quad.Vertices[1].X - _offsetX, quad.Vertices[1].Y - _offsetY);
OpenGL.glTexCoord2f(quad.TextureCoordinates[2].X, quad.TextureCoordinates[2].Y);
OpenGL.glVertex2f(quad.Vertices[2].X - _offsetX, quad.Vertices[2].Y - _offsetY);
OpenGL.glTexCoord2f(quad.TextureCoordinates[3].X, quad.TextureCoordinates[3].Y);
OpenGL.glVertex2f(quad.Vertices[3].X - _offsetX, quad.Vertices[3].Y - _offsetY);
OpenGL.glEnd();
}
private PointF[] _vertices = new PointF[4]; // The vertices.
#endregion Fields
#region Constructors
/// <summary>
/// Constructs a new quad.
/// </summary>
/// <param name="textureId"></param>
/// <param name="vertices"></param>
/// <param name="textureCoordinates"></param>
/// <param name="color"></param>
public Quad(ResTexture texture, PointF position, PointF scale, float angle, Color color)
{
_textureId = texture.TextureId;
_color = color;
// Set vertices.
_vertices[0] = new PointF(position.X, position.Y);
_vertices[1] = new PointF(texture.TextureSize + _vertices[0].X, position.Y);
_vertices[2] = new PointF(texture.TextureSize + _vertices[0].X, texture.TextureSize + _vertices[0].Y);
_vertices[3] = new PointF(position.X, texture.TextureSize + _vertices[0].Y);
// Set texture coordinates.
_textureCoordinates[0] = new PointF(0.0f, 0.0f);
_textureCoordinates[1] = new PointF(scale.X, 0.0f);
_textureCoordinates[2] = new PointF(scale.X, scale.Y);
_textureCoordinates[3] = new PointF(0.0f, scale.Y);
}
/// <summary>
/// Draws a part of an image resource with the desired, scale, rotation, and blend colors.
/// </summary>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
public static void DrawTile(ResTexture texture, int x, int y, float scaleX, float scaleY, float rotation, Color color)
{
// Add a textured quad.
_quads.Add(new Quad(texture, new PointF(x, y), new PointF(scaleX, scaleY), rotation, color));
}
