/// <summary>
/// Perfect pixel test collision
/// </summary>
/// <param name="entityA">Sprite 1</param>
/// <param name="entityB">Sprite 2</param>
/// <returns></returns>
public static bool PerfectPixelCollide(IColladable2PerfectPixel entityA, IColladable2PerfectPixel entityB)
{
int top = Math.Max(entityA.Rectangle.Top, entityB.Rectangle.Top);
int bottom = Math.Min(entityA.Rectangle.Bottom, entityB.Rectangle.Bottom);
int left = Math.Max(entityA.Rectangle.Left, entityB.Rectangle.Left);
int right = Math.Min(entityA.Rectangle.Right, entityB.Rectangle.Right);
for (int y = top; y < bottom; y++) // De haut en bas
{
for (int x = left; x < right; x++) // de gauche à droite
{
int index_A = (x - entityA.Rectangle.Left) + (y - entityA.Rectangle.Top) * entityA.Rectangle.Width;
int index_B = (x - entityB.Rectangle.Left) + (y - entityB.Rectangle.Top) * entityB.Rectangle.Width;
Color[] colorsSpriteA = YnGraphics.GetTextureColors(entityA.Texture);
Color[] colorsSpriteB = YnGraphics.GetTextureColors(entityB.Texture);
Color colorSpriteA = colorsSpriteA[index_A];
Color colorSpriteB = colorsSpriteB[index_B];
if (colorSpriteA.A != 0 && colorSpriteB.A != 0)
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// Create a new <see cref="Yna.Engine.Graphics.YnEntity"/> with a procedural texture.
/// </summary>
/// <param name='rectangle'>Rectangle of the texture</param>
/// <param name='color'>Color of the texture</param>
public YnEntity(Rectangle rectangle, Color color)
: this()
{
_rectangle = rectangle;
_position = rectangle.ToVector2();
_texture = YnGraphics.CreateTexture(color, rectangle.Width, rectangle.Height);
_assetLoaded = true;
}
/// <summary>
/// Create a sprite without asset
/// </summary>
/// <param name="rectangle">Size of the sprite</param>
/// <param name="color">Color of the sprite</param>
public YnSprite(Rectangle rectangle, Color color)
: this()
{
Rectangle = rectangle;
_texture = YnGraphics.CreateTexture(color, rectangle.Width, rectangle.Height);
_assetLoaded = true;
_position = new Vector2(rectangle.X, rectangle.Y);
_rectangle = rectangle;
}