/**
* Call this function to see if one <code>FlxObject</code> collides with another.
* Can be called with one object and one group, or two groups, or two objects,
* whatever floats your boat! It will put everything into a quad tree and then
* check for collisions. For maximum performance try bundling a lot of objects
* together using a <code>FlxGroup</code> (even bundling groups together!)
* NOTE: does NOT take objects' scrollfactor into account.
*
* @param Object1 The first object or group you want to check.
* @param Object2 The second object or group you want to check. If it is the same as the first, flixel knows to just do a comparison within that group.
*/
public static bool collide(FlxObject Object1, FlxObject Object2)
{
if( (Object1 == null) || !Object1.exists ||
(Object2 == null) || !Object2.exists )
return false;
quadTree = new FlxQuadTree(FlxQuadTree.bounds.x,FlxQuadTree.bounds.y,FlxQuadTree.bounds.width,FlxQuadTree.bounds.height,null);
quadTree.add(Object1,FlxQuadTree.A_LIST);
bool match = Object1 == Object2;
if(!match)
quadTree.add(Object2,FlxQuadTree.B_LIST);
bool cx = quadTree.overlap(!match,solveXCollision);
bool cy = quadTree.overlap(!match,solveYCollision);
return cx || cy;
}
/**
* Call this function to see if one <code>FlxObject</code> overlaps another.
* Can be called with one object and one group, or two groups, or two objects,
* whatever floats your boat! It will put everything into a quad tree and then
* check for overlaps. For maximum performance try bundling a lot of objects
* together using a <code>FlxGroup</code> (even bundling groups together!)
* NOTE: does NOT take objects' scrollfactor into account.
*
* @param Object1 The first object or group you want to check.
* @param Object2 The second object or group you want to check. If it is the same as the first, flixel knows to just do a comparison within that group.
* @param Callback A function with two <code>FlxObject</code> parameters - e.g. <code>myOverlapFunction(Object1:FlxObject,Object2:FlxObject);</code> If no function is provided, <code>FlxQuadTree</code> will call <code>kill()</code> on both objects.
*/
static public bool overlap(FlxObject Object1, FlxObject Object2, SpriteCollisionEvent Callback)
{
if ((Object1 == null) || !Object1.exists ||
(Object2 == null) || !Object2.exists)
{
return(false);
}
quadTree = new FlxQuadTree(FlxQuadTree.bounds.x, FlxQuadTree.bounds.y, FlxQuadTree.bounds.width, FlxQuadTree.bounds.height, null);
quadTree.add(Object1, FlxQuadTree.A_LIST);
if (Object1 == Object2)
{
return(quadTree.overlap(false, Callback));
}
quadTree.add(Object2, FlxQuadTree.B_LIST);
return(quadTree.overlap(true, Callback));
}
/**
* Call this function to see if one <code>FlxObject</code> collides with another.
* Can be called with one object and one group, or two groups, or two objects,
* whatever floats your boat! It will put everything into a quad tree and then
* check for collisions. For maximum performance try bundling a lot of objects
* together using a <code>FlxGroup</code> (even bundling groups together!)
* NOTE: does NOT take objects' scrollfactor into account.
*
* @param Object1 The first object or group you want to check.
* @param Object2 The second object or group you want to check. If it is the same as the first, flixel knows to just do a comparison within that group.
*/
static public bool collide(FlxObject Object1, FlxObject Object2)
{
if ((Object1 == null) || !Object1.exists ||
(Object2 == null) || !Object2.exists)
{
return(false);
}
quadTree = new FlxQuadTree(FlxQuadTree.bounds.x, FlxQuadTree.bounds.y, FlxQuadTree.bounds.width, FlxQuadTree.bounds.height, null);
quadTree.add(Object1, FlxQuadTree.A_LIST);
bool match = Object1 == Object2;
if (!match)
{
quadTree.add(Object2, FlxQuadTree.B_LIST);
}
bool cx = quadTree.overlap(!match, solveXCollision);
bool cy = quadTree.overlap(!match, solveYCollision);
return(cx || cy);
}
/**
* Call this function to see if one <code>FlxObject</code> overlaps another.
* Can be called with one object and one group, or two groups, or two objects,
* whatever floats your boat! It will put everything into a quad tree and then
* check for overlaps. For maximum performance try bundling a lot of objects
* together using a <code>FlxGroup</code> (even bundling groups together!)
* NOTE: does NOT take objects' scrollfactor into account.
*
* @param Object1 The first object or group you want to check.
* @param Object2 The second object or group you want to check. If it is the same as the first, flixel knows to just do a comparison within that group.
* @param Callback A function with two <code>FlxObject</code> parameters - e.g. <code>myOverlapFunction(Object1:FlxObject,Object2:FlxObject);</code> If no function is provided, <code>FlxQuadTree</code> will call <code>kill()</code> on both objects.
*/
public static bool overlap(FlxObject Object1, FlxObject Object2, SpriteCollisionEvent Callback)
{
if( (Object1 == null) || !Object1.exists ||
(Object2 == null) || !Object2.exists )
return false;
quadTree = new FlxQuadTree(FlxQuadTree.bounds.x,FlxQuadTree.bounds.y,FlxQuadTree.bounds.width,FlxQuadTree.bounds.height, null);
quadTree.add(Object1,FlxQuadTree.A_LIST);
if(Object1 == Object2)
return quadTree.overlap(false,Callback);
quadTree.add(Object2,FlxQuadTree.B_LIST);
return quadTree.overlap(true,Callback);
}