From 2586bab2dde141c4d01c81c54291394ba07b1ee7 Mon Sep 17 00:00:00 2001
From: Robert Adams
Date: Sun, 2 Dec 2012 20:45:46 -0800
Subject: BulletSim: add stubs for generalization of preStep actions. Will
 eventually replace the specialized vehicle processing with preStep event
 processing. Add TODO comments about this feature. Redo line endings in TODO
 file to be all Linux.

---
 OpenSim/Region/Physics/BulletSPlugin/BSScene.cs | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

(limited to 'OpenSim/Region/Physics/BulletSPlugin/BSScene.cs')

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
index 5e70a23..17cc7b4 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
@@ -96,6 +96,9 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
     public long SimulationStep { get { return m_simulationStep; } }
     private int m_taintsToProcessPerStep;
 
+    public delegate void PreStepAction(float timeStep);
+    public event PreStepAction BeforeStep;
+
     // A value of the time now so all the collision and update routines do not have to get their own
     // Set to 'now' just before all the prims and actors are called for collisions and updates
     public int SimulationNowTime { get; private set; }
@@ -487,8 +490,10 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
         ProcessTaints();
 
         // Some of the prims operate with special vehicle properties
-        ProcessVehicles(timeStep);
-        ProcessTaints();    // the vehicles might have added taints
+        DoPreStepActions(timeStep);
+
+        // the prestep actions might have added taints
+        ProcessTaints();
 
         // step the physical world one interval
         m_simulationStep++;
@@ -907,6 +912,16 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
         }
     }
 
+    private void DoPreStepActions(float timeStep)
+    {
+        ProcessVehicles(timeStep);
+
+        PreStepAction actions = BeforeStep;
+        if (actions != null)
+            actions(timeStep);
+
+    }
+
     // Some prims have extra vehicle actions
     // Called at taint time!
     private void ProcessVehicles(float timeStep)
-- 
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