public static MotionTestResult TestMotion(
this Collider2D collider,
Vector2 motion,
float margin = 0f)
{
var collisionBox = collider.GetCollisionBox();
var raycastHit2d = Physics2D.BoxCast(
origin: collisionBox.center,
size: collisionBox.size,
angle: 0,
direction: motion.normalized,
distance: motion.magnitude
);
if (raycastHit2d)
{
var collision2d = new ByteBrosCollision2D {
Owner = collider,
Target = raycastHit2d.collider,
Position = raycastHit2d.point,
Normal = raycastHit2d.normal,
Distance = raycastHit2d.distance
};
return(new MotionTestResult {
HasCollision = true,
Collision = collision2d,
Direction = motion.normalized,
Distance = raycastHit2d.distance - margin,
Remainder = motion.magnitude - raycastHit2d.distance + margin
});
}
return(new MotionTestResult {
HasCollision = false,
Collision = null,
Direction = motion.normalized,
Distance = motion.magnitude,
Remainder = 0f
});
}
private void OnWallRightCollision(ByteBrosCollision2D collision)
{
_wallRightContactNormal = collision.Normal.normalized;
WallRight.FutureOn = true;
}
private void OnGroundCollision(ByteBrosCollision2D collision)
{
_groundContactNormal += collision.Normal.normalized;
Ground.FutureOn = true;
}
public void OnCollisionNext(ByteBrosCollision2D collision)
{
_onCollision.OnNext(collision);
}
public static bool IsGroundCollision(
this ByteBrosCollision2D collision,
float maxAngle)
{
return(collision.Normal.WithinDegrees(Vector2.up, maxAngle));
}
public static bool IsWallRightCollision(
this ByteBrosCollision2D collision,
float maxAngle)
{
return(collision.Normal.WithinDegrees(Vector2.left, maxAngle));
}
