public override bool CheckCollision(Collider c)
{
BoxCollider a = this;
if (c is BoxCollider)
{
BoxCollider b = (BoxCollider)c;
//return x1 < x2 + w2 and x2 < x1 + w1 and y1 < y2 + h2 and y2 < y1 + h1
return((a.parent.x + a.x) < (b.parent.x + b.x) + b.width &&
(b.parent.x + b.x) < (a.parent.x + a.x) + a.width &&
(a.parent.y + a.y) < (b.parent.y + b.y) + b.height &&
(b.parent.y + b.y) < (a.parent.y + a.y) + a.height);
}
else if (c is CircleCollider)
{
CircleCollider b = (CircleCollider)c;
//return x1 < x2 + w2 and x2 < x1 + w1 and y1 < y2 + h2 and y2 < y1 + h1
return((a.parent.x + a.x) < (b.parent.x + b.x) + b.radius &&
(b.parent.x + b.x) - b.radius < (a.parent.x + a.x) + a.width &&
(a.parent.y + a.y) < (b.parent.y + b.y) + b.radius &&
(b.parent.y + b.y) - b.radius < (a.parent.y + a.y) + a.height);
}
return(false);
}
public override bool CheckCollision(Collider c)
{
CircleCollider a = this;
if (c is CircleCollider)
{
CircleCollider b = (CircleCollider)c;
// local dx = bx - ax
// local dy = by - ay
// local dist = math.sqrt(dx * dx + dy * dy)
// return dist < ar + br
int dx = (b.parent.x + b.x) - (a.parent.x + a.x);
int dy = (b.parent.y + b.y) - (a.parent.y + a.y);
double dist = Math.Sqrt(dx * dx + dy * dy);
return(dist < a.radius + b.radius);
}
else if (c is BoxCollider)
{
BoxCollider b = (BoxCollider)c;
//return x1 < x2 + w2 and x2 < x1 + w1 and y1 < y2 + h2 and y2 < y1 + h1
return((a.parent.x + a.x) - a.radius < (b.parent.x + b.x) + b.width &&
(b.parent.x + b.x) < (a.parent.x + a.x) + a.radius &&
(a.parent.y + a.y) - a.radius < (b.parent.y + b.y) + b.height &&
(b.parent.y + b.y) < (a.parent.y + a.y) + a.radius);
}
return(false);
}