public Explosion(Vector2 position)
{
Position = position;
image = new Image(TestProject.Assets.GetTexture("ExplosionTexture"), false);
image.CenterOrigin();
image.Scale *= 2;
Add(image);
Collider = new CircleMask(image.Width / 2);
Tag(TAG);
Tween.Add(this, 15, Ease.SineIn, FadeOut).OnComplete = Destroy;
Alarm.Add(this, SetNoCollidable, 2);
}
public abstract bool Collide(CircleMask mask, float dx = 0, float dy = 0);
public override bool Collide(CircleMask mask, float dx = 0, float dy = 0)
{
return Calc.DistanceSquared(AbsoluteX + dx, AbsoluteY + dy, mask.AbsoluteX, mask.AbsoluteY)
<= (Radius + mask.Radius) * (Radius + mask.Radius);
}
public override bool Collide(CircleMask mask, float dx = 0, float dy = 0)
{
Rectangle range = mask.Bounds;
range.Offset((int)(-AbsoluteLeft - dx), (int)(-AbsoluteTop - dy));
int xStart = (int)(range.X / CellWidth);
int yStart = (int)(range.Y / CellHeight);
int xEnd = (int)((range.X + range.Width - 1) / CellWidth);
int yEnd = (int)((range.Y + range.Height - 1) / CellHeight);
Rectangle box = new Rectangle(0, 0, (int)CellWidth, (int)CellHeight);
Vector2 shiftedPosition;
for(int x = xStart; x <= xEnd; ++x)
for (int y = yStart; y <= yEnd; ++y)
{
if (this[x, y])
{
box.X = (int)(x * CellWidth + AbsoluteLeft + dx);
box.Y = (int)(y * CellHeight + AbsoluteTop + dy);
shiftedPosition = box.Closest(mask.AbsolutePosition);
if (shiftedPosition.LengthSquared(mask.AbsolutePosition) <= (mask.Radius * mask.Radius))
return true;
}
}
return false;
}
public override bool Collide(CircleMask mask, float dx = 0, float dy = 0)
{
if (Collide(mask.AbsolutePosition, dx, dy))
return true;
Vector2 checkPosition = Bounds.Closest(mask.AbsolutePosition);
if (mask.Collide(checkPosition, -dx, -dy))
return true;
return false;
}