public abstract bool TestCollisionVsAABB(AxisAlignedBoundingBoxHull2D box, ref Collision c);
public override bool TestCollisionVsAABB(AxisAlignedBoundingBoxHull2D box, ref Collision c)
{
//on each axis, max extent of one < min extent of other
//
//1) Find Max and Min of each box <=== \\\*** HOW? ***///
//Max =
//Min =
//2) Compare max 1 to min 2
//if(max01 >= min2) is true, continue
//else, stop - they are not colliding
//3) Compare max 2 to min 1
//if(max02 >= min1) is true, the boxes have collided
//else, false positive
//4) Repeat 2 & 3 for the y axis
////Finding corners/Max-Min of box
////bottom left
//float box_X = box.transform.position.x - box.length * 0.5f;
//float box_Y = box.transform.position.y - box.height * 0.5f;
//Vector2 box_bottomLeft = new Vector2(box_X, box_Y);
////top right
//box_X = box.transform.position.x + box.length * 0.5f;
//box_Y = box.transform.position.y + box.height * 0.5f;
//Vector2 box_topRight = new Vector2(box_X, box_Y);
////Finding corners of this
////bottom left
//float this_X = transform.position.x - length * 0.5f;
//float this_Y = transform.position.y - height * 0.5f;
//Vector2 this_bottomLeft = new Vector2(this_X, this_Y);
////top right
//this_X = transform.position.x + length * 0.5f;
//this_Y = transform.position.y + height * 0.5f;
//Vector2 this_topRight = new Vector2(this_X, this_Y);
//AABB, finding corners(sides) in if()
bool colOnX = false;
bool colOnY = false;
if (this.transform.position.x + (this.length * 0.5f) >= box.transform.position.x - (box.length * 0.5f) && box.transform.position.x + (box.length * 0.5f) >= this.transform.position.x - (this.length * 0.5f))
{
colOnX = true;
}
if (this.transform.position.y + (this.height * 0.5f) >= box.transform.position.y - (box.length * 0.5f) && box.transform.position.y + (box.height * 0.5f) >= this.transform.position.y - (this.length * 0.5f))
{
colOnY = true;
}
if (colOnY && colOnX)
{
return(true);
}
else
{
return(false);
}
}
public override bool TestCollisionVsAABB(AxisAlignedBoundingBoxHull2D box, ref Collision c)
{
return(box.TestCollisionVsOBB(this, ref c));
}
public override bool TestCollisionVsAABB(AxisAlignedBoundingBoxHull2D box, ref Collision col)
{
//Calculate closest point by clamping(??) center; closest point vs circle test
//
//1)
Debug.Log("AABB v C test");
Vector2 circCenter = this.transform.position;
Vector2 boxCenter = box.transform.position;
float boxXMin = box.transform.position.x - (box.length * 0.5f);
float boxYMin = box.transform.position.y - (box.height * 0.5f);
float boxXMax = box.transform.position.x + (box.length * 0.5f);
float boxYMax = box.transform.position.y + (box.height * 0.5f);
float clampedX = Mathf.Clamp(circCenter.x, boxXMin, boxXMax);
float clampedY = Mathf.Clamp(circCenter.y, boxYMin, boxYMax);
Vector2 distance = new Vector2(circCenter.x - clampedX, circCenter.y - clampedY);
float dSq = (distance.x * distance.x) + (distance.y * distance.y);
if (dSq < (this.radius * this.radius))
{
Debug.Log("AABB v C pass");
hitExplode = true;
//Assign objects
col.a = this;
col.b = box;
Vector2 clamped = new Vector2(clampedX, clampedY);
//get the clamped combinded vector as the point to have norm from
Vector2 Point = (clamped + (distance.normalized * this.radius)) * 0.5f;
//take the centerpoint of the circle, subtract the point to get the norm (it may be point - circ)
//Vector2 norm = (circCenter - Point).normalized; //(same as distance)
//col.contacts[0].normal = norm;
col.contacts[0].normal = distance.normalized;
col.contacts[0].point = Point;
//radius of the circle minus the distance to the original point of entry
col.interpenDepth = (this.radius * this.radius) - dSq;
// col.interpenDepth = (this.radius + clamped.magnitude) - distance.magnitude;
return(true);
}
else
{
Debug.Log("AABB v C fail");
return(false);
}
/*
* bool colOnX = false;
* bool colOnY = false;
*
* if (circCenter.x + radius >= box.transform.position.x - (box.length * 0.5f) && box.transform.position.x + (box.length * 0.5f) >= circCenter.x - radius)
* {
* colOnX = true;
* }
*
* if (circCenter.y + radius >= box.transform.position.y - (box.length * 0.5f) && box.transform.position.y + (box.height * 0.5f) >= circCenter.y - radius)
* {
* colOnY = true;
* }
*
* if (colOnY && colOnX)
* {
* updateCollision(ref c);
* return true;
* }
* else
* {
* return false;
* }
*/
//when we clamp on each dimension, there are only two dimesnions
}
