67 lines
1.4 KiB
C#
67 lines
1.4 KiB
C#
using AlienAttack.MonoGame.Things.Bullets;
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namespace AlienAttack.MonoGame.Things.Enemies;
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public abstract class EnemyShip(int x, int y) : MoveableSprite(x, y)
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{
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protected abstract int Health { get; set; }
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public virtual int CrashDamage => 10;
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public override sealed void Update(SpriteUpdateContext context)
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{
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if (Health <= 0)
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{
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IsDead = true;
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SpawnExplosion(context);
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OnKilled(context);
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return;
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}
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base.Update(context);
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TryMove(context);
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if (YPosition > context.ViewTransform.ScreenHeight)
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{
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IsDead = true;
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return;
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}
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TryFire(context);
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}
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protected virtual void TryMove(SpriteUpdateContext context)
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{
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}
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protected virtual void TryFire(SpriteUpdateContext context)
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{
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}
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public override void OnCollision(SpriteCollisionContext context)
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{
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if (context.Sprite is Bullet bullet && bullet.Owner is Player)
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{
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Health -= bullet.Damage;
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}
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if (context.Sprite is Player)
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{
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Health = 0;
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}
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}
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private void SpawnExplosion(SpriteUpdateContext context)
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{
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context.SpawnSprite(new Explosion((int)XPosition, (int)YPosition, XVelocity, YVelocity));
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context.AudioManager.PlayExplosion();
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}
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protected virtual void OnKilled(SpriteUpdateContext context)
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{
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}
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} |