move Weapon & friends into own file

OpenRA.Mods.RA/Weapon.cs

@@ -0,0 +1,93 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2010 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made 
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see LICENSE.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using OpenRA.GameRules;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA
+{
+	public class Barrel
+	{
+		public int2 Position;				// position in turret space
+		public int Facing;					// deviation from turret facing
+	}
+
+	public class Turret
+	{
+		public float Recoil = 0.0f;			// remaining recoil fraction
+		public int2 UnitSpacePosition;		// where, in the unit's local space.
+		public int2 ScreenSpacePosition;	// screen-space hack to make things line up good.
+
+		public Turret(int[] offset)
+		{
+			ScreenSpacePosition = offset.AbsOffset().ToInt2();
+			UnitSpacePosition = offset.RelOffset().ToInt2();
+		}
+	}
+
+	public class Weapon
+	{
+		public WeaponInfo Info;
+		public int FireDelay = 0;			// time (in frames) until the weapon can fire again
+		public int Burst = 0;				// burst counter
+
+		public Barrel[] Barrels;			// where projectiles are spawned, in local turret space.
+		public Turret Turret;				// where this weapon is mounted -- possibly shared
+
+		public Weapon(string weaponName, Turret turret, int[] localOffset)
+		{
+			Info = Rules.Weapons[weaponName.ToLowerInvariant()];
+			Burst = Info.Burst;
+			Turret = turret;
+
+			var barrels = new List<Barrel>();
+			for (var i = 0; i < localOffset.Length / 3; i++)
+				barrels.Add(new Barrel
+				{
+					Position = new int2(localOffset[3 * i], localOffset[3 * i + 1]),
+					Facing = localOffset[3 * i + 2]
+				});
+
+			// if no barrels specified, the default is "turret position; turret facing".
+			if (barrels.Count == 0)
+				barrels.Add(new Barrel { Position = int2.Zero, Facing = 0 });
+
+			Barrels = barrels.ToArray();
+		}
+
+		public bool IsReloading { get { return FireDelay > 0; } }
+
+		public void Tick()
+		{
+			if (FireDelay > 0) --FireDelay;
+			Turret.Recoil = Math.Max(0f, Turret.Recoil - .2f);
+		}
+
+		public bool IsValidAgainst(Target target)
+		{
+			return Combat.WeaponValidForTarget(Info, target);
+		}
+
+		public void FiredShot()
+		{
+			Turret.Recoil = 1;
+
+			if (--Burst > 0)
+				FireDelay = Info.BurstDelay;
+			else
+			{
+				FireDelay = Info.ROF;
+				Burst = Info.Burst;
+			}
+		}
+	}
+}