public static bool Intersect(CollisionRectangle ColRectA, CollisionRectangle ColRectB)
{
bool status = false;
float A_minx = ColRectA.x - ColRectA.width / 2;
float A_maxx = ColRectA.x + ColRectA.width / 2;
float A_miny = ColRectA.y - ColRectA.height / 2;
float A_maxy = ColRectA.y + ColRectA.height / 2;
float B_minx = ColRectB.x - ColRectB.width / 2;
float B_maxx = ColRectB.x + ColRectB.width / 2;
float B_miny = ColRectB.y - ColRectB.height / 2;
float B_maxy = ColRectB.y + ColRectB.height / 2;
// Trivial reject
if ((B_maxx < A_minx) || (B_minx > A_maxx) || (B_maxy < A_miny) || (B_miny > A_maxy))
{
status = false;
}
else
{
status = true;
}
return(status);
}
public static void detectCollision(GameObject pSafeTreeA, GameObject pSafeTreeB)
{
// Debug.WriteLine("Dectecting collision");
// A vs B
GameObject pNodeA = pSafeTreeA;
GameObject pNodeB = pSafeTreeB;
// Debug.WriteLine("\nColPair: start {0}, {1}", pNodeA.cGameObjectName, pNodeB.cGameObjectName);
while (pNodeA != null)
{
// Restart compare
pNodeB = pSafeTreeB;
while (pNodeB != null)
{
// who is being tested?
// Debug.WriteLine("ColPair: collide: {0}, {1}", pNodeA.cGameObjectName, pNodeB.cGameObjectName);
// Get rectangles
CollisionRectangle rectA = pNodeA.cCollisionObj.cCollisionRectangle;
CollisionRectangle rectB = pNodeB.cCollisionObj.cCollisionRectangle;
// test them
if (CollisionRectangle.Intersect(rectA, rectB))
{
// Boom - it works (Visitor in Action)
pNodeA.Accept(pNodeB);
break;
}
pNodeB = (GameObject)pNodeB.pSibling;
}
pNodeA = (GameObject)pNodeA.pSibling;
}
}
protected void updateUnionBox()
{
PCSNode node = (PCSNode)this;
node = node.pChild;
if (node == null)
{
this.cCollisionObj.cCollisionRectangle.Set(0, 0, 0, 0);
this.x = 0;
this.y = 0;
}
else
{
GameObject gameObj = (GameObject)node;
CollisionRectangle collisionTotal = this.cCollisionObj.cCollisionRectangle;
collisionTotal.Set(gameObj.cCollisionObj.cCollisionRectangle);
while (node != null)
{
gameObj = (GameObject)node;
collisionTotal.Union(gameObj.cCollisionObj.cCollisionRectangle);
node = node.pSibling;
}
this.x = this.cCollisionObj.cCollisionRectangle.x;
this.y = this.cCollisionObj.cCollisionRectangle.y;
}
}
public void Union(CollisionRectangle ColRect)
{
float minX;
float minY;
float maxX;
float maxY;
if ((this.x - this.width / 2) < (ColRect.x - ColRect.width / 2))
{
minX = (this.x - this.width / 2);
}
else
{
minX = (ColRect.x - ColRect.width / 2);
}
if ((this.x + this.width / 2) > (ColRect.x + ColRect.width / 2))
{
maxX = (this.x + this.width / 2);
}
else
{
maxX = (ColRect.x + ColRect.width / 2);
}
if ((this.y + this.height / 2) > (ColRect.y + ColRect.height / 2))
{
maxY = (this.y + this.height / 2);
}
else
{
maxY = (ColRect.y + ColRect.height / 2);
}
if ((this.y - this.height / 2) < (ColRect.y - ColRect.height / 2))
{
minY = (this.y - this.height / 2);
}
else
{
minY = (ColRect.y - ColRect.height / 2);
}
this.width = (maxX - minX);
this.height = (maxY - minY);
this.x = minX + this.width / 2;
this.y = minY + this.height / 2;
}
// Extract the rectangle co ordinates of the sprite in the proxy sprite
// Set those to the sprite box.
public CollisionObject(ProxySprite mProxySprite)
{
Debug.Assert(mProxySprite != null);
//Create a BoxSprite
Sprite mSprite = mProxySprite.rcSprite;
Debug.Assert(mSprite != null);
cSpriteBox = SpriteBoxManager.add(SpriteBox.SpriteBoxName.Box, mSprite.screenRect);
Debug.Assert(this.cSpriteBox != null);
// Set the Collision Rectangle
this.cCollisionRectangle = new CollisionRectangle(cSpriteBox.cSpriteBoxRect);
Debug.Assert(this.cCollisionRectangle != null);
// this.cSpriteBox.setColor(1, 1, 1);
// this.cSpriteBox.setColor(Unit.spriteBoxColor);
}
