cargo: added cargo-related sequences for APC/LST/TRAN; moved Passengers onto UnitInfo for convenience (and to allow garrisoning without a big hack); added Cargo trait to all known transports

OpenRa.Game/GameRules/UnitInfo.cs

@@ -55,13 +55,14 @@ namespace OpenRa.Game.GameRules
 		public readonly int OrePips = 0;
 		public readonly string Icon = null;
 		public readonly int[] SelectionSize = null;
+		public readonly int Passengers = 0;
+		public readonly int UnloadFacing = 0;
 
 		public UnitInfo(string name) { Name = name; }
 	}
 
 	public class MobileInfo : UnitInfo
 	{
-		public readonly int Passengers = 0;
 		public readonly int Speed = 0;
 		public readonly bool NoMovingFire = false;
 		public readonly string Voice = "GenericVoice";

OpenRa.Game/OpenRa.Game.csproj

@@ -185,6 +185,7 @@
     <Compile Include="Traits\Activities\Follow.cs" />
     <Compile Include="Traits\Activities\Turn.cs" />
     <Compile Include="Traits\Activities\UndeployMcv.cs" />
+    <Compile Include="Traits\Activities\UnloadCargo.cs" />
     <Compile Include="Traits\APMine.cs" />
     <Compile Include="Traits\ATMine.cs" />
     <Compile Include="Traits\AttackBase.cs" />
@@ -198,6 +199,7 @@
     <Compile Include="Traits\BelowUnits.cs" />
     <Compile Include="Traits\Building.cs" />
     <Compile Include="Traits\C4Demolition.cs" />
+    <Compile Include="Traits\Cargo.cs" />
     <Compile Include="Traits\Chronoshiftable.cs" />
     <Compile Include="Traits\ChronoshiftPaletteEffect.cs" />
     <Compile Include="Traits\Chronosphere.cs" />

OpenRa.Game/Traits/Activities/UnloadCargo.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OpenRa.Game.Traits.Activities
+{
+	class UnloadCargo : IActivity
+	{
+		public IActivity NextActivity { get; set; }
+		bool isCanceled;
+
+		public IActivity Tick(Actor self)
+		{
+			if (isCanceled) return NextActivity;
+
+			// if we're a thing that can turn, turn to the
+			// right facing for the unload animation
+			var unit = self.traits.GetOrDefault<Unit>();
+			if (unit != null && unit.Facing != self.Info.UnloadFacing)
+				return Util.SequenceActivities(new Turn(self.Info.UnloadFacing), this);
+
+			// todo: play the `open` anim (or the `close` anim backwards)
+			// todo: unload all the cargo
+			// todo: play the `close` anim (or the `open` anim backwards)
+
+			// as for open/close... the westwood guys suck at being consistent.
+
+			return this;
+		}
+
+		public void Cancel(Actor self) { NextActivity = null; isCanceled = true; }
+	}
+}

OpenRa.Game/Traits/Cargo.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using OpenRa.Game.GameRules;
+
+namespace OpenRa.Game.Traits
+{
+	class Cargo : IPips, IOrder
+	{
+		List<Actor> cargo = new List<Actor>();
+
+		public Cargo(Actor self) { }
+
+		public Order IssueOrder(Actor self, int2 xy, MouseInput mi, Actor underCursor)
+		{
+			// todo: check if there is an unoccupied `land` tile adjacent
+			if (mi.Button == MouseButton.Right && underCursor == self && cargo.Count > 0)
+				return new Order("Deploy", self, null, int2.Zero, null);
+
+			return null;
+		}
+
+		public void ResolveOrder(Actor self, Order order)
+		{
+			if (order.OrderString == "Deploy")
+			{
+				// todo: eject the units
+				self.CancelActivity();
+			}
+		}
+
+		public bool IsFull(Actor self)
+		{
+			return cargo.Count == self.Info.Passengers;
+		}
+
+		public IEnumerable<PipType> GetPips( Actor self )
+		{
+			for (var i = 0; i < self.Info.Passengers; i++)
+				if (i >= cargo.Count)
+					yield return PipType.Transparent;
+				else
+					yield return GetPipForPassenger(cargo[i]);
+		}
+
+		static PipType GetPipForPassenger(Actor a)
+		{
+			// probably not actually right yet; fix to match real-ra
+
+			if (a.traits.Contains<AutoHeal>())
+				return PipType.Yellow;
+			if (!a.traits.WithInterface<AttackBase>().Any())
+				return PipType.Yellow;	// noncombat [E6,SPY,THF]
+			if (a.traits.Contains<C4Demolition>())
+				return PipType.Red;		// E7
+
+			return PipType.Green;
+		}
+	}
+}