public static void EnemyBlockCollision(IEnemy enemy, Block block, Vector2 direction)
{
if (block.BlockState is KillBlockState) {
enemy.Remove();
return;
}
direction.Normalize();
Vector2 newPosition = new Vector2();
if (direction.X < Utility.ZERO)
{
newPosition = new Vector2(block.Position.X + block.Bounds.Width + 1, enemy.Position.Y);
}
else if (direction.X > Utility.ZERO)
{
newPosition = new Vector2(block.Position.X - enemy.Bounds.Width - 1, enemy.Position.Y);
}
else if (direction.Y < Utility.ZERO)
{
newPosition = new Vector2(enemy.Position.X, block.Position.Y - enemy.Bounds.Height);
}
else if (direction.Y > Utility.ZERO)
{
newPosition = new Vector2(enemy.Position.X, block.Position.Y + block.Bounds.Height);
}
if (Vector2.Subtract(enemy.Position, newPosition).Length() > block.Bounds.Width / Utility.CAMERA_SCALE) return;
enemy.Position = newPosition;
//falling behavior
if (direction.Y < Utility.ZERO)
{
enemy.OnGround = true;
enemy.Velocity *= Vector2.UnitX;
}
//turnaround behavior
if (Math.Abs(direction.X) > Utility.ZERO)
{
enemy.Velocity *= new Vector2(-Utility.ONE, Utility.ONE);
}
}