/// <summary>
/// moves along with the tank, rotates towards the given target and shoots if active
/// </summary>
/// <param name="basePos">The position of the tank.</param>
/// <param name="baseRotation">The rotation of the tank.</param>
/// <param name="target">The target.</param>
public virtual void Update(Vector2 basePos, float baseRotation, Vector2 target)
{
//calculates the position of the cannon based on the base position and rotation
Pos = CalcPos(basePos, baseRotation);
//rotates towards the target
target -= Pos;
target *= new Vector2(1, -1);
Rotation = Tools.RotateTowardsVector(Rotation, target, rotateSpeed);
//shoots if active, game is not frozen and the shoot timer is up
if (shootTimer.IsTimeUp(Tools.GameTime) && Active && !GameScene.GameIsFrozen())
{
//resets the time until next shot
shootTimer.Reset();
//creates a new bullet and shoots it
var newBullet = Bullet.Clone(Pos, Rotation);
GameScene.AddBullet(newBullet);
//if this cannon belongs to the player update the ammo
if (newBullet.BulletOwner == Owner.Player)
{
//update te ammo
GameScene.RemoveBullet();
}
}
}
/// <summary>
/// chooses with loot to drop
/// </summary>
private void DropItem()
{
//randomly chase a number to decide which item to drop
var chance = Tools.Rnd.Next(0, 210);
switch (chance)
{
case int n when n < 20:
//drop relocate/freeze game item
GameScene.AddItem(new RelocateItem(BasePosition));
break;
case int n when n < 40:
//drop speed boost item
GameScene.AddItem(new SpeedBoostItem(BasePosition));
break;
case int n when n < 100:
//drop coin item
GameScene.AddItem(new CoinItem(BasePosition));
break;
case int n when n < 130:
//drop coin pile item
GameScene.AddItem(new CoinPileItem(BasePosition));
break;
case int n when n < 170:
//drop ammo item
GameScene.AddItem(new Ammo(BasePosition));
break;
case int n when n < 210:
//drop med kit
GameScene.AddBullet(new MedKit(BasePosition));
break;
}
}
