Move Render*Circle, ThrowsParticle and ParatroopersPower to appropriate locations

OpenRA.Mods.Common/Traits/ThrowsParticle.cs

@@ -0,0 +1,96 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 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 COPYING.
+ */
+#endregion
+
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	class ThrowsParticleInfo : ITraitInfo, Requires<RenderSimpleInfo>, Requires<IBodyOrientationInfo>
+	{
+		public readonly string Anim = null;
+
+		[Desc("Initial position relative to body")]
+		public readonly WVec Offset = WVec.Zero;
+
+		[Desc("Minimum distance to throw the particle")]
+		public readonly WRange MinThrowRange = new WRange(256);
+
+		[Desc("Maximum distance to throw the particle")]
+		public readonly WRange MaxThrowRange = new WRange(768);
+
+		[Desc("Minimum angle to throw the particle")]
+		public readonly WAngle MinThrowAngle = WAngle.FromDegrees(30);
+
+		[Desc("Maximum angle to throw the particle")]
+		public readonly WAngle MaxThrowAngle = WAngle.FromDegrees(60);
+
+		[Desc("Speed to throw the particle (horizontal WPos/tick)")]
+		public readonly int Velocity = 75;
+
+		[Desc("Maximum rotation rate")]
+		public readonly float ROT = 15;
+
+		public object Create(ActorInitializer init) { return new ThrowsParticle(init, this); }
+	}
+
+	class ThrowsParticle : ITick
+	{
+		WVec pos;
+		WVec initialPos;
+		WVec finalPos;
+		WAngle angle;
+
+		int tick = 0;
+		int length;
+
+		float facing;
+		float rotation;
+
+		public ThrowsParticle(ActorInitializer init, ThrowsParticleInfo info)
+		{
+			var self = init.Self;
+			var rs = self.Trait<RenderSimple>();
+			var body = self.Trait<IBodyOrientation>();
+
+			// TODO: Carry orientation over from the parent instead of just facing
+			var bodyFacing = init.Contains<FacingInit>() ? init.Get<FacingInit, int>() : 0;
+			facing = Turreted.GetInitialTurretFacing(init, 0);
+
+			// Calculate final position
+			var throwRotation = WRot.FromFacing(Game.CosmeticRandom.Next(1024));
+			var throwDistance = Game.CosmeticRandom.Next(info.MinThrowRange.Range, info.MaxThrowRange.Range);
+
+			initialPos = pos = info.Offset.Rotate(body.QuantizeOrientation(self, WRot.FromFacing(bodyFacing)));
+			finalPos = initialPos + new WVec(throwDistance, 0, 0).Rotate(throwRotation);
+			angle = new WAngle(Game.CosmeticRandom.Next(info.MinThrowAngle.Angle, info.MaxThrowAngle.Angle));
+			length = (finalPos - initialPos).Length / info.Velocity;
+
+			// Facing rotation
+			rotation = WRange.FromPDF(Game.CosmeticRandom, 2).Range * info.ROT / 1024;
+
+			var anim = new Animation(init.World, rs.GetImage(self), () => (int)facing);
+			anim.PlayRepeating(info.Anim);
+			rs.Add(info.Anim, new AnimationWithOffset(anim, () => pos, null));
+		}
+
+		public void Tick(Actor self)
+		{
+			if (tick == length)
+				return;
+
+			pos = WVec.LerpQuadratic(initialPos, finalPos, angle, tick++, length);
+
+			// Spin the particle
+			facing += rotation;
+			rotation *= .9f;
+		}
+	}
+}