paratroopers

OpenRa.Game/Traits/ParaDrop.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using OpenRa.Traits.Activities;
+using OpenRa.Effects;
+
+namespace OpenRa.Traits
+{
+	class ParaDropInfo : ITraitInfo
+	{
+		public readonly int LZRange = 4;
+		public object Create(Actor self) { return new ParaDrop(); }
+	}
+
+	class ParaDrop : ITick
+	{
+		readonly List<int2> droppedAt = new List<int2>();
+		int2 lz;
+
+		public void SetLZ( int2 lz )
+		{
+			this.lz = lz;
+			droppedAt.Clear();
+		}
+
+		public void Tick(Actor self)
+		{
+			var r = self.Info.Traits.Get<ParaDropInfo>().LZRange;
+
+			if ((self.Location - lz).LengthSquared <= r * r && !droppedAt.Contains(self.Location))
+			{
+				// todo: check is this is a good drop cell.
+
+				// unload a dude here
+				droppedAt.Add(self.Location);
+
+				var cargo = self.traits.Get<Cargo>();
+				if (cargo.IsEmpty(self))
+					FinishedDropping(self);
+				else
+				{
+					var a = cargo.Unload(self);
+					var rs = a.traits.Get<RenderSimple>();
+
+					self.World.AddFrameEndTask(w => w.Add(
+						new Parachute(self.Owner, rs.anim.Name,
+							self.CenterLocation,
+							self.traits.Get<Unit>().Altitude, a)));
+
+					Sound.Play("chute1.aud");
+				}
+			}
+		}
+
+		void FinishedDropping(Actor self)
+		{
+			// this kindof sucks, actually.
+			self.CancelActivity();
+			self.QueueActivity(new Fly(Util.CenterOfCell(self.World.ChooseRandomEdgeCell())));
+			self.QueueActivity(new RemoveSelf());
+		}
+	}
+}