public Sprite(Image sprite, Transformation transformation, AnimationScript animation, SATCollisionVolume collider)
{
this.Image = sprite;
SubRect = new Rectangle(0, 0, sprite.Texture.Width, sprite.Texture.Height);
this.Transformation = new Transformation(transformation);
this.AnimationScript = animation;
this.CollisionVolume = collider;
OnDraw += this.Draw;
if (CollisionVolume != null)
{
OnUpdate += delegate(GameTime time) { collider.TransformCollisionVolume(this.Transformation); };
}
}
/// <summary>
/// An Actor can be drawn on screen, translated around arbitrarily, collide with other game objects, and process update logic every frame.
/// </summary>
/// <param name="sprite">The artwork the actor will use during Draw.</param>
/// <param name="transformation">Positioning information.</param>
/// <param name="collider">A collision shape that mirrors the transformation.</param>
public Actor(Image sprite, Transformation transformation, SATCollisionVolume collider)
: base(sprite, transformation, collider)
{
}
public Sprite(Image sprite, Transformation transformation, SATCollisionVolume collider)
: this(sprite, transformation, null, collider)
{
}
static void TestCollisionVolume()
{
//Two non-touching squares
SATCollisionVolume cv = new SATCollisionVolume();
SATCollisionVolume cv2 = new SATCollisionVolume();
cv.AddVertex(Vector2.Zero);
cv.AddVertex(new Vector2(0, 1));
cv.AddVertex(Vector2.One);
cv.AddVertex(new Vector2(1, 0));
cv2.AddVertex(new Vector2(2, 0));
cv2.AddVertex(new Vector2(2, 1));
cv2.AddVertex(new Vector2(3, 1));
cv2.AddVertex(new Vector2(3, 0));
System.Diagnostics.Debug.Assert(cv.TestCollision(cv2) == false);
//Two overlapping squares
cv = new SATCollisionVolume();
cv2 = new SATCollisionVolume();
cv.AddVertex(Vector2.Zero);
cv.AddVertex(new Vector2(0, 1));
cv.AddVertex(Vector2.One);
cv.AddVertex(new Vector2(1, 0));
cv2.AddVertex(new Vector2(0.9f, 0));
cv2.AddVertex(new Vector2(0.9f, 1));
cv2.AddVertex(new Vector2(2, 1));
cv2.AddVertex(new Vector2(2, 0));
System.Diagnostics.Debug.Assert(cv.TestCollision(cv2) == true);
//two non-overlapping triangles
cv = new SATCollisionVolume();
cv2 = new SATCollisionVolume();
cv.AddVertex(0, 0);
cv.AddVertex(0, 1);
cv.AddVertex(1, 1);
cv2.AddVertex(2, 0);
cv2.AddVertex(3, 1);
cv2.AddVertex(3, 0);
System.Diagnostics.Debug.Assert(cv.TestCollision(cv2) == false);
//two overlapping triangles
cv = new SATCollisionVolume();
cv2 = new SATCollisionVolume();
cv.AddVertex(0, 0);
cv.AddVertex(0, 1);
cv.AddVertex(1, 1);
cv2.AddVertex(0, 0);
cv2.AddVertex(1, 1);
cv2.AddVertex(1, 0);
System.Diagnostics.Debug.Assert(cv.TestCollision(cv2) == true);
//two overlapping triangles that are both defined counterclockwise
cv = new SATCollisionVolume();
cv2 = new SATCollisionVolume();
cv.AddVertex(0, 0);
cv.AddVertex(1, 1);
cv.AddVertex(0, 1);
cv2.AddVertex(0, 0);
cv2.AddVertex(1, 0);
cv2.AddVertex(1, -1);
System.Diagnostics.Debug.Assert(cv.TestCollision(cv2) == true);
//two overlapping triangles that are both defined in negative space counterclockwise
cv = new SATCollisionVolume();
cv2 = new SATCollisionVolume();
cv.AddVertex(0, 0);
cv.AddVertex(-1, -1);
cv.AddVertex(0, -1);
cv2.AddVertex(0, 0);
cv2.AddVertex(-1, 0);
cv2.AddVertex(-1, -1);
System.Diagnostics.Debug.Assert(cv.TestCollision(cv2) == true);
//two overlapping triangles that are both defined in negative space
cv = new SATCollisionVolume();
cv2 = new SATCollisionVolume();
cv.AddVertex(0, 0);
cv.AddVertex(0, 1);
cv.AddVertex(-1, 1);
cv2.AddVertex(0, 0);
cv2.AddVertex(-1, 1);
cv2.AddVertex(-1, 0);
System.Diagnostics.Debug.Assert(cv.TestCollision(cv2) == true);
//two non-overlapping triangles on opposite sides of the x axis
cv = new SATCollisionVolume();
cv2 = new SATCollisionVolume();
cv.AddVertex(0, 0);
cv.AddVertex(0, 1);
cv.AddVertex(1, 1);
cv2.AddVertex(0, -1);
cv2.AddVertex(1, -1);
cv2.AddVertex(1, -2);
System.Diagnostics.Debug.Assert(cv.TestCollision(cv2) == false);
}
