From ee3be9c89be399e1736344d5c8ff3a2da197e4c1 Mon Sep 17 00:00:00 2001
From: Paul Chote <paul@chote.net>
Date: Sat, 16 Jul 2011 20:13:22 +1200
Subject: [PATCH] Laser tweaks:  - Expose the beam duration to the
 projectileinfo  - Play an explosion animation at the target  - Beam tracks
 moving targets  - Disable player beam color in C&C

---
 OpenRA.Mods.RA/Effects/LaserZap.cs | 39 ++++++++++++++++++------------
 mods/cnc/sequences/misc.yaml       |  5 ++++
 mods/cnc/weapons.yaml              |  1 -
 3 files changed, 29 insertions(+), 16 deletions(-)

diff --git a/OpenRA.Mods.RA/Effects/LaserZap.cs b/OpenRA.Mods.RA/Effects/LaserZap.cs
index 7e09a001e4..63414e859c 100755
--- a/OpenRA.Mods.RA/Effects/LaserZap.cs
+++ b/OpenRA.Mods.RA/Effects/LaserZap.cs
@@ -12,6 +12,7 @@ using System.Collections.Generic;
 using System.Drawing;
 using OpenRA.Effects;
 using OpenRA.GameRules;
+using OpenRA.Graphics;
 using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA.Effects
@@ -19,12 +20,14 @@ namespace OpenRA.Mods.RA.Effects
 	class LaserZapInfo : IProjectileInfo
 	{
 		public readonly int BeamRadius = 1;
+		public readonly int BeamDuration = 10;
 		public readonly bool UsePlayerColor = false;
+		public readonly string Explosion = "laserfire";
 
 		public IEffect Create(ProjectileArgs args) 
 		{
 			Color c = UsePlayerColor ? args.firedBy.Owner.ColorRamp.GetColor(0) : Color.Red;
-			return new LaserZap(args, BeamRadius, c);
+			return new LaserZap(args, BeamRadius, c, BeamDuration, Explosion);
 		}
 	}
 
@@ -32,46 +35,52 @@ namespace OpenRA.Mods.RA.Effects
 	{
 		ProjectileArgs args;
 		readonly int radius;
-		int timeUntilRemove = 10; // # of frames
-		int totalTime = 10;
+		int ticks = 0;
+		int beamTicks; // Duration of beam
 		Color color;
 		bool doneDamage = false;
+		Animation explosion;
 		
-		public LaserZap(ProjectileArgs args, int radius, Color color)
+		public LaserZap(ProjectileArgs args, int radius, Color color, int beamTicks, string explosion)
 		{
 			this.args = args;
 			this.color = color;
 			this.radius = radius;
+			this.beamTicks = beamTicks;
+			this.explosion = new Animation(explosion);
 		}
 
 		public void Tick(World world)
 		{
-			if (timeUntilRemove <= 0)
-				world.AddFrameEndTask(w => w.Remove(this));
-			--timeUntilRemove;
-			
+			// Beam tracks target
+			if (args.target.IsValid)
+				args.dest = args.target.CenterLocation;
+
 			if (!doneDamage)
 			{
-				if (args.target.IsValid)
-					args.dest = args.target.CenterLocation;
-
+				explosion.PlayThen("idle",
+					() => world.AddFrameEndTask(w => w.Remove(this)));
 				Combat.DoImpacts(args);
 				doneDamage = true;
 			}
+			++ticks;
+			explosion.Tick();
 		}
 
 		public IEnumerable<Renderable> Render()
 		{
-			int alpha = (int)((1-(float)(totalTime-timeUntilRemove)/totalTime)*255);
-			Color rc = Color.FromArgb(alpha,color);
+			yield return new Renderable(explosion.Image, args.dest - .5f * explosion.Image.size, "effect", (int)args.dest.Y);
+
+			if (ticks >= beamTicks)
+				yield break;
+
+			Color rc = Color.FromArgb((beamTicks-ticks)*255/beamTicks, color);
 			
 			float2 unit = 1.0f/(args.src - args.dest).Length*(args.src - args.dest).ToFloat2();
 			float2 norm = new float2(-unit.Y, unit.X);
 			
 			for (int i = -radius; i < radius; i++)
 				Game.Renderer.LineRenderer.DrawLine(args.src + i * norm, args.dest + i * norm, rc, rc);
-			
-			yield break;
 		}
 	}
 }
diff --git a/mods/cnc/sequences/misc.yaml b/mods/cnc/sequences/misc.yaml
index aff3f4aced..e34cc9ee84 100644
--- a/mods/cnc/sequences/misc.yaml
+++ b/mods/cnc/sequences/misc.yaml
@@ -21,6 +21,11 @@ smoke_m:
 		Start: 0
 		Length: 26
 
+laserfire:
+	idle:veh-hit3
+		Start: 0
+		Length: *
+
 dragon:
 	idle:
 		Start: 0
diff --git a/mods/cnc/weapons.yaml b/mods/cnc/weapons.yaml
index f193c0eb22..8753b93a46 100644
--- a/mods/cnc/weapons.yaml
+++ b/mods/cnc/weapons.yaml
@@ -678,7 +678,6 @@ Laser:
 	Report: OBELRAY1
 	Projectile: LaserZap
 		BeamRadius: 1
-		UsePlayerColor: true
 	Warhead:
 		Spread: 1
 		InfDeath: 4