Everything is now OpenRA, not OpenRa

OpenRA.Game/Effects/Bullet.cs

@@ -0,0 +1,133 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.GameRules;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	public class Bullet : IEffect
+	{
+		readonly Player Owner;
+		readonly Actor FiredBy;
+		readonly WeaponInfo Weapon;
+		readonly ProjectileInfo Projectile;
+		readonly WarheadInfo Warhead;
+		readonly int2 Src;
+		readonly int2 Dest;
+		readonly int2 VisualDest;
+		readonly int SrcAltitude;
+		readonly int DestAltitude;
+
+		int t = 0;
+		Animation anim;
+
+		const int BaseBulletSpeed = 100;		/* pixels / 40ms frame */
+
+		public Bullet(string weapon, Player owner, Actor firedBy,
+			int2 src, int2 dest, int srcAltitude, int destAltitude)
+			: this(Rules.WeaponInfo[weapon], owner, firedBy, src, dest, srcAltitude, destAltitude) { }
+
+		/* src, dest are *pixel* coords */
+		public Bullet(WeaponInfo weapon, Player owner, Actor firedBy, 
+			int2 src, int2 dest, int srcAltitude, int destAltitude)
+		{
+			Owner = owner;
+			FiredBy = firedBy;
+			Src = src;
+			Dest = dest;
+			SrcAltitude = srcAltitude;
+			DestAltitude = destAltitude;
+			VisualDest = Dest + new int2(
+						firedBy.World.CosmeticRandom.Next(-10, 10),
+						firedBy.World.CosmeticRandom.Next(-10, 10));
+			Weapon = weapon;
+			Projectile = Rules.ProjectileInfo[Weapon.Projectile];
+			Warhead = Rules.WarheadInfo[Weapon.Warhead];
+
+			if (Projectile.Image != null && Projectile.Image != "none")
+			{
+				if (Projectile.Rotates)
+					anim = new Animation(Projectile.Image, () => Traits.Util.GetFacing((dest - src).ToFloat2(), 0));
+				else
+					anim = new Animation(Projectile.Image);
+
+				anim.PlayRepeating("idle");
+			}
+		}
+
+		int TotalTime() { return (Dest - Src).Length * BaseBulletSpeed / Weapon.Speed; }
+
+		public void Tick( World world )
+		{
+			t += 40;
+
+			if (t > TotalTime())		/* remove finished bullets */
+			{
+				world.AddFrameEndTask(w => w.Remove(this));
+				Combat.DoImpact(Dest, VisualDest - new int2( 0, DestAltitude ), 
+					Weapon, Projectile, Warhead, FiredBy);
+			}
+
+			if (Projectile.Trail != null)
+			{
+				var at = (float)t / TotalTime();
+				var altitude = float2.Lerp(SrcAltitude, DestAltitude, at);
+				var pos = float2.Lerp(Src.ToFloat2(), VisualDest.ToFloat2(), at)
+					- 0.5f * anim.Image.size - new float2(0, altitude);
+
+				var highPos = (Projectile.High || Projectile.Arcing)
+					? (pos - new float2(0, (VisualDest - Src).Length * height * 4 * at * (1 - at)))
+					: pos;
+
+				world.AddFrameEndTask(w => w.Add(
+					new Smoke(w, highPos.ToInt2(), Projectile.Trail)));
+			}
+		}
+
+		const float height = .1f;
+
+		public IEnumerable<Renderable> Render()
+		{
+			if (anim != null)
+			{
+				var at = (float)t / TotalTime();
+
+				var altitude = float2.Lerp(SrcAltitude, DestAltitude, at);
+				var pos = float2.Lerp( Src.ToFloat2(), VisualDest.ToFloat2(), at)
+					- 0.5f * anim.Image.size - new float2( 0, altitude );
+
+				if (Projectile.High || Projectile.Arcing)
+				{
+					if (Projectile.Shadow)
+						yield return new Renderable(anim.Image, pos - .5f * anim.Image.size, "shadow");
+
+					var highPos = pos - new float2(0, (VisualDest - Src).Length * height * 4 * at * (1 - at));
+
+					yield return new Renderable(anim.Image, highPos - .5f * anim.Image.size, Owner.Palette);
+				}
+				else
+					yield return new Renderable(anim.Image, pos - .5f * anim.Image.size, Projectile.UnderWater ? "shadow" : Owner.Palette);
+			}
+		}
+	}
+}

OpenRA.Game/Effects/Corpse.cs

@@ -0,0 +1,50 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	class Corpse : IEffect
+	{
+		readonly Animation anim;
+		readonly float2 pos;
+		readonly Player owner;
+
+		public Corpse(Actor fromActor, int death)
+		{
+			anim = new Animation(fromActor.traits.GetOrDefault<RenderSimple>().GetImage(fromActor));
+			anim.PlayThen("die{0}".F(death + 1),
+				() => fromActor.World.AddFrameEndTask(w => w.Remove(this)));
+
+			pos = fromActor.CenterLocation;
+			owner = fromActor.Owner;
+		}
+
+		public void Tick( World world ) { anim.Tick(); }
+
+		public IEnumerable<Renderable> Render()
+		{
+			yield return new Renderable(anim.Image, pos - .5f * anim.Image.size, owner.Palette);
+		}
+	}
+}

OpenRA.Game/Effects/DelayedAction.cs

@@ -0,0 +1,46 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	public class DelayedAction : IEffect
+	{
+		Action a;
+		int delay;
+
+		public DelayedAction(int delay, Action a)
+		{
+			this.a = a;
+			this.delay = delay;
+		}
+
+		public void Tick( World world )
+		{
+			if (--delay <= 0)
+				world.AddFrameEndTask(w => { w.Remove(this); a(); });
+		}
+
+		public IEnumerable<Renderable> Render() { yield break; }
+	}
+}

OpenRA.Game/Effects/Explosion.cs

@@ -0,0 +1,50 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	public class Explosion : IEffect
+	{
+		Animation anim;
+		int2 pos;
+
+		public Explosion( World world, int2 pixelPos, int style, bool isWater)
+		{
+			this.pos = pixelPos;
+			var variantSuffix = isWater ? "w" : "";
+			anim = new Animation("explosion");
+				anim.PlayThen(style.ToString() + variantSuffix, 
+					() => world.AddFrameEndTask(w => w.Remove(this)));
+		}
+
+		public void Tick( World world ) { anim.Tick(); }
+
+		public IEnumerable<Renderable> Render()
+		{
+			yield return new Renderable(anim.Image, pos - .5f * anim.Image.size, "effect");
+		}
+
+		public Player Owner { get { return null; } }
+	}
+}

OpenRA.Game/Effects/FlashTarget.cs

@@ -0,0 +1,52 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	class FlashTarget : IEffect
+	{
+		Actor target;
+		int remainingTicks = 4;
+
+		public FlashTarget(Actor target)
+		{
+			this.target = target;
+			foreach (var e in target.World.Effects.OfType<FlashTarget>().Where(a => a.target == target).ToArray())
+				target.World.Remove(e);
+		}
+
+		public void Tick( World world )
+		{
+			if (--remainingTicks == 0)
+				world.AddFrameEndTask(w => w.Remove(this));
+		}
+
+		public IEnumerable<Renderable> Render()
+		{
+			if (remainingTicks % 2 == 0)
+				foreach (var r in target.Render())
+					yield return r.WithPalette("highlight");
+		}
+	}
+}

OpenRA.Game/Effects/IEffect.cs

@@ -0,0 +1,31 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	public interface IEffect
+	{
+		void Tick( World world );
+		IEnumerable<Renderable> Render();
+	}
+}

OpenRA.Game/Effects/LaserZap.cs

@@ -0,0 +1,64 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.Drawing;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	class LaserZap : IEffect
+	{
+		readonly int2 from, to;
+		readonly int radius;
+		int timeUntilRemove = 10; // # of frames
+		int totalTime = 10;
+		Color color;
+		
+		public LaserZap(int2 from, int2 to, int radius, Color color)
+		{
+			this.from = from;
+			this.to = to;
+			this.color = color;
+			this.radius = radius;
+		}
+
+		public void Tick(World world)
+		{
+			if (timeUntilRemove <= 0)
+				world.AddFrameEndTask(w => w.Remove(this));
+			--timeUntilRemove;
+		}
+
+		public IEnumerable<Renderable> Render()
+		{
+			int alpha = (int)((1-(float)(totalTime-timeUntilRemove)/totalTime)*255);
+			Color rc = Color.FromArgb(alpha,color);
+			
+			float2 unit = 1.0f/(from - to).Length*(from - to).ToFloat2();
+			float2 norm = new float2(-unit.Y, unit.X);
+			
+			for (int i = -radius; i < radius; i++)
+				Game.world.WorldRenderer.lineRenderer.DrawLine(from + i * norm, to + i * norm, rc, rc);
+			
+			yield break;
+		}
+	}
+}

OpenRA.Game/Effects/Missile.cs

@@ -0,0 +1,114 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using OpenRA.GameRules;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	class Missile : IEffect
+	{
+		readonly Actor FiredBy;
+		readonly WeaponInfo Weapon;
+		readonly ProjectileInfo Projectile;
+		readonly WarheadInfo Warhead;
+		float2 Pos;
+		readonly Actor Target;
+		readonly Animation anim;
+		int Facing;
+		int t;
+		int Altitude;
+
+		public Missile(WeaponInfo weapon, Player owner, Actor firedBy,
+			int2 src, Actor target, int altitude, int facing)
+		{
+			Weapon = weapon;
+			Projectile = Rules.ProjectileInfo[Weapon.Projectile];
+			Warhead = Rules.WarheadInfo[Weapon.Warhead];
+			FiredBy = firedBy;
+			Target = target;
+			Pos = src.ToFloat2();
+			Altitude = altitude;
+			Facing = facing;
+
+			if (Projectile.Image != null && Projectile.Image != "none")
+			{
+				if (Projectile.Rotates)
+					anim = new Animation(Projectile.Image, () => Facing);
+				else
+					anim = new Animation(Projectile.Image);
+
+				anim.PlayRepeating("idle");
+			}
+		}
+
+		const int MissileCloseEnough = 7;
+		const float Scale = .2f;
+
+		public void Tick( World world )
+		{
+			t += 40;
+
+			var targetUnit = Target.traits.GetOrDefault<Unit>();
+			var targetAltitude = targetUnit != null ? targetUnit.Altitude : 0;
+			Altitude += Math.Sign(targetAltitude - Altitude);
+
+			Traits.Util.TickFacing(ref Facing, 
+				Traits.Util.GetFacing(Target.CenterLocation - Pos, Facing),
+				Projectile.ROT);
+
+			anim.Tick();
+
+			var dist = Target.CenterLocation - Pos;
+			if (dist.LengthSquared < MissileCloseEnough * MissileCloseEnough || Target.IsDead)
+				Explode(world);
+
+			var speed = Scale * Weapon.Speed * ((targetAltitude > 0 && Weapon.TurboBoost) ? 1.5f : 1f);
+
+			var angle = Facing / 128f * Math.PI;
+			var move = speed * -float2.FromAngle((float)angle);
+			Pos += move;
+
+			if (Projectile.Trail != null)
+				world.AddFrameEndTask(w => w.Add(
+					new Smoke(w, (Pos - 1.5f * move - new int2( 0, Altitude )).ToInt2(), Projectile.Trail)));
+
+			if (Projectile.RangeLimit != 0 && t > Projectile.RangeLimit * 40)
+				Explode(world);
+		}
+
+		void Explode(World world)
+		{
+			world.AddFrameEndTask(w => w.Remove(this));
+
+			if (t > Projectile.Arm * 40)	/* don't blow up in our launcher's face! */
+				Combat.DoImpact(Pos.ToInt2(), Pos.ToInt2(), Weapon, Projectile, Warhead, FiredBy);
+			return;
+		}
+
+		public IEnumerable<Renderable> Render()
+		{
+			yield return new Renderable(anim.Image, Pos - 0.5f * anim.Image.size - new float2(0, Altitude), "effect");
+		}
+	}
+}

OpenRA.Game/Effects/MoveFlash.cs

@@ -0,0 +1,47 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	class MoveFlash : IEffect
+	{
+		Animation anim = new Animation("moveflsh");
+		float2 pos;
+
+		public MoveFlash( World world, float2 pos )
+		{
+			this.pos = pos;
+			anim.PlayThen( "idle", 
+				() => world.AddFrameEndTask( 
+					w => w.Remove( this ) ) );
+		}
+
+		public void Tick( World world ) { anim.Tick(); }
+
+		public IEnumerable<Renderable> Render()
+		{
+			yield return new Renderable(anim.Image, pos - .5f * anim.Image.size, "shadow");
+		}
+	}
+}

OpenRA.Game/Effects/RepairIndicator.cs

@@ -0,0 +1,47 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	class RepairIndicator : IEffect
+	{
+		int framesLeft = (int)(Rules.General.RepairRate * 25 * 60 / 2);
+		Actor a;
+		Animation anim = new Animation("select");
+
+		public RepairIndicator(Actor a) { this.a = a; anim.PlayRepeating("repair"); }
+
+		public void Tick( World world )
+		{
+			if (--framesLeft == 0 || a.IsDead)
+				world.AddFrameEndTask(w => w.Remove(this));
+		}
+
+		public IEnumerable<Renderable> Render()
+		{
+			yield return new Renderable(anim.Image, 
+				a.CenterLocation - .5f * anim.Image.size, "chrome");
+		}
+	}
+}

OpenRA.Game/Effects/Smoke.cs

@@ -0,0 +1,50 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	class Smoke : IEffect
+	{
+		readonly int2 pos;
+		readonly Animation anim;
+
+		public Smoke(World world, int2 pos, string trail)
+		{
+			this.pos = pos;
+			anim = new Animation(trail);
+			anim.PlayThen("idle",
+				() => world.AddFrameEndTask(w => w.Remove(this)));
+		}
+
+		public void Tick( World world )
+		{
+			anim.Tick();
+		}
+
+		public IEnumerable<Renderable> Render()
+		{
+			yield return new Renderable(anim.Image, pos - .5f * anim.Image.size, "effect");
+		}
+	}
+}

OpenRA.Game/Effects/TeslaZap.cs

@@ -0,0 +1,104 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Effects
+{
+	class TeslaZap : IEffect
+	{
+		readonly int2 from, to;
+		readonly Sequence tesla;
+		int timeUntilRemove = 2; // # of frames
+
+		public TeslaZap( int2 from, int2 to )
+		{
+			this.from = from;
+			this.to = to;
+			this.tesla = SequenceProvider.GetSequence( "litning", "bright" );
+		}
+
+		public void Tick( World world )
+		{
+			if( timeUntilRemove <= 0 )
+				world.AddFrameEndTask( w => w.Remove( this ) );
+			--timeUntilRemove;
+		}
+
+		public IEnumerable<Renderable> Render()
+		{
+			if( from.X < to.X )
+				return DrawZap( from, to, tesla );
+			else if( from.X > to.X || from.Y > to.Y )
+				return DrawZap( to, from, tesla );
+			else
+				return DrawZap( from, to, tesla );
+		}
+
+		static IEnumerable<Renderable> DrawZap( int2 from, int2 to, Sequence tesla )
+		{
+			int2 d = to - from;
+			if( d.X < 8 )
+			{
+				var prev = new int2( 0, 0 );
+				var y = d.Y;
+				while( y >= prev.Y + 8 )
+				{
+					yield return new Renderable( tesla.GetSprite( 2 ), (float2)( from + prev - new int2( 0, 8 ) ), "effect");
+					prev.Y += 8;
+				}
+			}
+			else
+			{
+				var prev = new int2( 0, 0 );
+				for( int i = 1 ; i < d.X ; i += 8 )
+				{
+					var y = i * d.Y / d.X;
+					if( y <= prev.Y - 8 )
+					{
+						yield return new Renderable(tesla.GetSprite(3), (float2)(from + prev - new int2(8, 16)), "effect");
+						prev.Y -= 8;
+						while( y <= prev.Y - 8 )
+						{
+							yield return new Renderable(tesla.GetSprite(2), (float2)(from + prev - new int2(0, 16)), "effect");
+							prev.Y -= 8;
+						}
+					}
+					else if( y >= prev.Y + 8 )
+					{
+						yield return new Renderable(tesla.GetSprite(0), (float2)(from + prev - new int2(8, 8)), "effect");
+						prev.Y += 8;
+						while( y >= prev.Y + 8 )
+						{
+							yield return new Renderable(tesla.GetSprite(2), (float2)(from + prev - new int2(0, 8)), "effect");
+							prev.Y += 8;
+						}
+					}
+					else
+						yield return new Renderable(tesla.GetSprite(1), (float2)(from + prev - new int2(8, 8)), "effect");
+
+					prev.X += 8;
+				}
+			}
+		}
+	}
+}