public Alien(Alien alien)
: base(alien)
{
OnDestroyedEvent += OnDestroy;
DeltaX = alien.DeltaX;
DeltaY = alien.DeltaY;
Command = alien.Command;
}
public static List<Alien> Build(int playerNumber, int waveSize, int startX, int deltaX)
{
var map = Match.GetInstance().Map;
var deltaY = playerNumber == 1 ? -1 : 1;
var middleHeightOfMap = map.Height / 2;
// make sure aliens dont go out of map
while (map.IsOutOfXBounds(startX + 3 * deltaX * (waveSize - 1)))
{
startX -= 3 * deltaX;
}
// Spawn
var wave = new List<Alien>();
var alienY = middleHeightOfMap + deltaY;
var alienX = startX;
Alien alien = null;
for (var i = 0; i < waveSize; i++)
{
try
{
alien = new Alien(playerNumber) { X = alienX, Y = alienY };
alien.DeltaX = deltaX;
map.AddEntity(alien);
wave.Add(alien);
//test
Match.GetInstance().Map.AddTempEntity(new NodeEntity(Match.GetInstance().Depth, alien));
}
catch (CollisionException ex)
{
var depth = Match.GetInstance().Depth;
var nodeAlien = new NodeEntity(depth, alien);
Match.GetInstance().Map.AddTempEntity(nodeAlien);//for undo purposes
//keep up with score kill special case
Match.GetInstance().Map.AddKillEntity(nodeAlien);
Match.GetInstance().Map.AddKillEntity(new NodeEntity(depth, ex.Entity, hasMoved: false, isKillLikely: true));
// Alien[0]
// Missile[1]
ex.Entity.Destroy();
if (ex.Entity.GetType() == typeof(Missile))
{
((Missile)ex.Entity).ScoreKill(alien);
}
}
alienX += 3 * deltaX;
}
return wave;
}
private void IssueShootOrder(Alien alien)
{
if (alien == null) return;
ShotEnergy -= ShotEnergyCost;
switch (alien.Command)
{
case AlienCommand.MoveForward:
alien.Command = AlienCommand.MoveForwardAndShoot;
break;
case AlienCommand.MoveSideways:
alien.Command = AlienCommand.MoveSidewaysAndShoot;
break;
}
}
public void UndoIssueShootOrdersIfPossible(Alien shotAlien)
{
ShotEnergy--;
if (shotAlien == null) return;
ShotEnergy += ShotEnergyCost;
switch (shotAlien.Command)
{
case AlienCommand.MoveForwardAndShoot:
shotAlien.Command = AlienCommand.MoveForward;
break;
case AlienCommand.MoveSidewaysAndShoot:
shotAlien.Command = AlienCommand.MoveSideways;
break;
}
}
public Alien TestAddAlien(int x, int y)
{
var alien = new Alien(PlayerNumber) { X = x, Y = y };
Match.GetInstance().Map.AddEntity(alien);
Waves.Insert(0, new List<Alien> { alien });
return alien;
}
public void IssueShootOrdersIfPossible(Alien shotAlien)
{
if (_debugPreventShoot) return;
if (_debugAllShoot)
{
TestIssueShootOrderToAll();
return;
}
ChargeShotEnergy();
if (!CanShoot()) return;
IssueShootOrder(shotAlien);
}
