public AABBCollisionComponent(GameObject parent, bool active)
: base(parent)
{
this.CollisionBoxes = new List<AABB>();
this.Active = active;
this.Collided = false;
this.ProjectionSegment = new SegmentVec2(Vector2.Zero, Vector2.Zero);
}
public AABB(PositionComponent parentPosition, Vector2 offsetPosition, int width, int height)
{
this.Position = offsetPosition;
this.Width = width;
this.Height = height;
this._parentPositionComponent = parentPosition;
this.Collided = false;
this.ProjectionSegment = new SegmentVec2(Vector2.Zero, Vector2.Zero);
}
private void findCollisions(GameObject obj1, GameObject obj2)
{
PositionComponent obj1PosComponent = (PositionComponent)obj1.GetComponent(ComponentType.Position);
PositionComponent obj2PosComponent = (PositionComponent)obj2.GetComponent(ComponentType.Position);
AABBCollisionComponent obj1ColComponent = (AABBCollisionComponent)obj1.GetComponent(ComponentType.AABBCollision);
AABBCollisionComponent obj2ColComponent = (AABBCollisionComponent)obj2.GetComponent(ComponentType.AABBCollision);
SegmentVec2 projectionSegment = new SegmentVec2(Vector2.Zero, Vector2.Zero);
SegmentVec2 overlapSegment;
SegmentVec2 smallestOverlapSegment = new SegmentVec2(Vector2.Zero, new Vector2(999, 999));
bool collision = true;
foreach (AABB box in obj2ColComponent.CollisionBoxes)
{
box.Collided = false;
}
foreach (AABB box1 in obj1ColComponent.CollisionBoxes)
{
box1.Collided = false;
foreach (AABB box2 in obj2ColComponent.CollisionBoxes)
{
collision = true;
foreach (LineParametric axis in this._axes)
{
SegmentParametric box1Proj = LibFunc.GetParametricProjection(axis, box1.GetVertices());
SegmentParametric box2Proj = LibFunc.GetParametricProjection(axis, box2.GetVertices());
overlapSegment = LibFunc.GetOverlapSegmentVec2(box1Proj, box2Proj);
if (overlapSegment.GetVector2().LengthSquared() == 0)
{
collision = false;
break;
}
else
{
if (overlapSegment.GetVector2().LengthSquared() < smallestOverlapSegment.GetVector2().LengthSquared())
{
smallestOverlapSegment = overlapSegment;
}
}
}
if (collision)
{
box1.Collided = true;
box2.Collided = true;
if (smallestOverlapSegment.GetVector2().LengthSquared() > projectionSegment.GetVector2().LengthSquared())
{
projectionSegment = smallestOverlapSegment;
}
}
}
}
if (projectionSegment.GetVector2().LengthSquared() != 0)
{
obj1ColComponent.Collided = true;
obj1ColComponent.ProjectionSegment = projectionSegment;
}
}
