90 lines
2.6 KiB
C#
90 lines
2.6 KiB
C#
namespace TanksServer.GameLogic;
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internal sealed class CollideBullets(
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MapEntityManager entityManager,
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MapService map,
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IOptions<GameRules> options,
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TankSpawnQueue tankSpawnQueue
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) : ITickStep
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{
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private const int ExplosionRadius = 3;
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public ValueTask TickAsync(TimeSpan _)
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{
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entityManager.RemoveWhere(BulletHitsTank);
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entityManager.RemoveWhere(BulletHitsWall);
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entityManager.RemoveWhere(BulletTimesOut);
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return ValueTask.CompletedTask;
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}
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private bool BulletTimesOut(Bullet bullet)
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{
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if (bullet.Timeout > DateTime.Now)
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return false;
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var radius = bullet.IsExplosive ? ExplosionRadius : 0;
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ExplodeAt(bullet.Position.ToPixelPosition(), radius, bullet.Owner);
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return true;
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}
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private bool BulletHitsWall(Bullet bullet)
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{
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var pixel = bullet.Position.ToPixelPosition();
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if (!map.Current.IsWall(pixel))
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return false;
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var radius = bullet.IsExplosive ? ExplosionRadius : 0;
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ExplodeAt(pixel, radius, bullet.Owner);
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return true;
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}
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private bool BulletHitsTank(Bullet bullet)
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{
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if (!TryHitTankAt(bullet.Position, bullet.Owner, DateTime.Now > bullet.OwnerCollisionAfter))
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return false;
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if (bullet.IsExplosive)
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ExplodeAt(bullet.Position.ToPixelPosition(), ExplosionRadius, bullet.Owner);
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return true;
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}
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private bool TryHitTankAt(FloatPosition position, Player owner, bool canHitOwnTank)
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{
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foreach (var tank in entityManager.Tanks)
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{
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var hitsOwnTank = owner == tank.Owner;
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if (hitsOwnTank && !canHitOwnTank)
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continue;
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var (topLeft, bottomRight) = tank.Bounds;
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if (position.X < topLeft.X || position.X > bottomRight.X ||
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position.Y < topLeft.Y || position.Y > bottomRight.Y)
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continue;
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if (!hitsOwnTank)
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owner.Scores.Kills++;
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tank.Owner.Scores.Deaths++;
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entityManager.Remove(tank);
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tankSpawnQueue.EnqueueForDelayedSpawn(tank.Owner);
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return true;
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}
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return false;
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}
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private void ExplodeAt(PixelPosition pixel, int i, Player owner)
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{
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for (var x = pixel.X - i; x <= pixel.X + i; x++)
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for (var y = pixel.Y - i; y <= pixel.Y + i; y++)
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{
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var offsetPixel = new PixelPosition(x, y);
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if (options.Value.DestructibleWalls && map.Current.TryDestroyWallAt(offsetPixel))
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owner.Scores.WallsDestroyed++;
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TryHitTankAt(offsetPixel.ToFloatPosition(), owner, true);
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}
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}
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}
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