combat actually works

OpenRa.DataStructures/float2.cs

@@ -86,5 +86,8 @@ namespace OpenRa
 
 		public static float2 Max(float2 a, float2 b) { return new float2(Math.Max(a.X, b.X), Math.Max(a.Y, b.Y)); }
 		public static float2 Min(float2 a, float2 b) { return new float2(Math.Min(a.X, b.X), Math.Min(a.Y, b.Y)); }
+
+		public float LengthSquared { get { return X * X + Y * Y; } }
+		public float Length { get { return (float)Math.Sqrt(LengthSquared); } }
 	}
 }

OpenRa.Game/Actor.cs

@@ -78,5 +78,26 @@ namespace OpenRa.Game
 				return new RectangleF(loc.X, loc.Y, size.X, size.Y);
 			}
 		}
+
+		public void InflictDamage(Actor attacker, Bullet inflictor, int damage)
+		{
+			/* todo: auto-retaliate, etc */
+			/* todo: death sequence for infantry based on inflictor */
+			/* todo: start smoking if < conditionYellow and took damage, and not already smoking
+
+			if (Health <= 0) return;		/* overkill! */
+
+			Health -= damage;
+			if (Health <= 0)
+			{
+				Health = 0;
+				if (attacker.Owner != null)
+					attacker.Owner.Kills++;
+
+				Game.world.AddFrameEndTask(w => w.Remove(this));
+
+				/* todo: explosion */
+			}
+		}
 	}
 }

OpenRa.Game/Bullet.cs

@@ -59,6 +59,12 @@ namespace OpenRa.Game
 			{
 				Game.world.AddFrameEndTask(w => w.Remove(this));
 				Game.world.AddFrameEndTask(w => w.Add(new Explosion(Dest)));
+
+				var maxSpread = GetMaximumSpread();
+				var hitActors = Game.FindUnitsInCircle(Dest, GetMaximumSpread());
+
+				foreach (var victim in hitActors)
+					victim.InflictDamage(FiredBy, this, (int)GetDamageToInflict(victim));
 			}
 		}
 
@@ -70,5 +76,20 @@ namespace OpenRa.Game
 					Dest.ToFloat2(), 
 					(float)t / TotalTime()) - 0.5f * anim.Image.size);
 		}
+
+		float GetMaximumSpread()
+		{
+			return (int)(Warhead.Spread * Math.Log(Weapon.Damage, 2));
+		}
+
+		float GetDamageToInflict(Actor target)
+		{
+			/* todo: some things can't be damaged AT ALL by certain weapons! */
+			var distance = (target.CenterLocation - Dest).Length;
+			var rawDamage = Weapon.Damage * (float)Math.Exp(-distance / Warhead.Spread);
+			var multiplier = Warhead.EffectivenessAgainst(target.unitInfo.Armor);
+
+			return rawDamage * multiplier;
+		}
 	}
 }

OpenRa.Game/Game.cs

@@ -144,6 +144,12 @@ namespace OpenRa.Game
 				.Where(x => x.Bounds.IntersectsWith(rect));
 		}
 
+		public static IEnumerable<Actor> FindUnitsInCircle(float2 a, float r)
+		{
+			return FindUnits(a - new float2(r, r), a + new float2(r, r))
+				.Where(x => (x.CenterLocation - a).LengthSquared < r * r);
+		}
+
 		public static IEnumerable<Actor> SelectUnitsInBox(float2 a, float2 b)
 		{
 			return FindUnits(a, b).Where(x => x.Owner == LocalPlayer && x.traits.Contains<Traits.Mobile>());

OpenRa.Game/GameRules/FieldLoader.cs

@@ -23,7 +23,7 @@ namespace OpenRa.Game.GameRules
 				return int.Parse( x );
 
 			else if (fieldType == typeof(float))
-				return float.Parse( x );
+				return float.Parse(x.Replace("%","")) * (x.Contains( '%' ) ? 0.01f : 1f);
 
 			else if (fieldType == typeof(string))
 				return x;//.ToLowerInvariant();

OpenRa.Game/GameRules/UnitInfo.cs

@@ -6,8 +6,6 @@ using OpenRa.Game.Graphics;
 using IjwFramework.Types;
 
 namespace OpenRa.Game.GameRules
-{
-	public class UnitInfo
 {
 	public enum ArmorType
 	{
@@ -18,6 +16,8 @@ namespace OpenRa.Game.GameRules
 		concrete = 4,
 	}
 
+	public class UnitInfo
+	{
 		public readonly string Name;
 
 		public readonly string Description = "";

OpenRa.Game/GameRules/WarheadInfo.cs

@@ -10,11 +10,13 @@ namespace OpenRa.Game.GameRules
 	class WarheadInfo
 	{
 		public readonly int Spread = 1;
-		public readonly string Verses = "100%,100%,100%,100%,100%";
+		public readonly float[] Verses = { 1, 1, 1, 1, 1 };
 		public readonly bool Wall = false;
 		public readonly bool Wood = false;
 		public readonly bool Ore = false;
 		public readonly int Explosion = 0;
 		public readonly int InfDeath = 0;
+
+		public float EffectivenessAgainst(ArmorType at) { return Verses[ (int)at ]; }
 	}
 }

OpenRa.Game/MainWindow.cs

@@ -57,7 +57,7 @@ namespace OpenRa.Game
 			Game.world.Add( new Actor( "mcv", new int2( 5, 5 ), Game.players[ 3 ]) );
 			Game.world.Add( new Actor( "mcv", new int2( 7, 5 ), Game.players[ 2 ] ) );
 			Game.world.Add( new Actor( "mcv", new int2( 9, 5 ), Game.players[ 0 ] ) );
-			var jeep = new Actor( "jeep", new int2( 9, 7 ), Game.players[ 1 ] );
+			var jeep = new Actor( "jeep", new int2( 9, 15 ), Game.players[ 1 ] );
 			Game.world.Add( jeep );
 			var tank = new Actor( "3tnk", new int2( 12, 7 ), Game.players[ 1 ] );
 			Game.world.Add( tank );
@@ -77,10 +77,7 @@ namespace OpenRa.Game
 			while (Created && Visible)
 			{
 				Game.Tick();
-
-				// rude hack
 				Game.viewport.cursor = Game.controller.ChooseCursor();
-
 				Application.DoEvents();
 			}
 		}

OpenRa.Game/Player.cs

@@ -4,6 +4,7 @@ namespace OpenRa.Game
 	class Player
 	{
 		public int Palette;
+		public int Kills;
 		public string PlayerName;
 		public TechTree.TechTree TechTree = new OpenRa.TechTree.TechTree();