From cf16ca9bdaad75d42213089e18c0ee8f8422bbd6 Mon Sep 17 00:00:00 2001
From: Melanie
Date: Wed, 1 Aug 2012 22:36:24 +0100
Subject: Create the ability for physics modules to request assets on demand by
 themselves. For that, the physics module simply calls RequestAssetMethod,
 which in turn points to Scene.PhysicsRequestAsset. This gives physics access
 to the asset system without introducing unwanted knowledge of the scene
 class.

---
 OpenSim/Region/Application/OpenSimBase.cs      |  1 +
 OpenSim/Region/Framework/Scenes/Scene.cs       | 16 ++++++++++++++++
 OpenSim/Region/Physics/Manager/PhysicsScene.cs |  5 +++++
 3 files changed, 22 insertions(+)

(limited to 'OpenSim/Region')

diff --git a/OpenSim/Region/Application/OpenSimBase.cs b/OpenSim/Region/Application/OpenSimBase.cs
index 4084741..37cfe1d 100644
--- a/OpenSim/Region/Application/OpenSimBase.cs
+++ b/OpenSim/Region/Application/OpenSimBase.cs
@@ -700,6 +700,7 @@ namespace OpenSim
             scene.LoadWorldMap();
 
             scene.PhysicsScene = GetPhysicsScene(scene.RegionInfo.RegionName);
+            scene.PhysicsScene.RequestAssetMethod = scene.PhysicsRequestAsset;
             scene.PhysicsScene.SetTerrain(scene.Heightmap.GetFloatsSerialised());
             scene.PhysicsScene.SetWaterLevel((float) regionInfo.RegionSettings.WaterHeight);
 
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index eb4ba41..c77457c 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -5421,5 +5421,21 @@ namespace OpenSim.Region.Framework.Scenes
                 m_SpawnPoint = 1;
             return m_SpawnPoint - 1;
         }
+
+        // Wrappers to get physics modules retrieve assets. Has to be done this way
+        // because we can't assign the asset service to physics directly - at the
+        // time physics are instantiated it's not registered but it will be by
+        // the time the first prim exists.
+        public void PhysicsRequestAsset(UUID assetID, AssetReceivedDelegate callback)
+        {
+            AssetService.Get(assetID.ToString(), callback, PhysicsAssetReceived);
+        }
+
+        private void PhysicsAssetReceived(string id, Object sender, AssetBase asset)
+        {
+            AssetReceivedDelegate callback = (AssetReceivedDelegate)sender;
+
+            callback(asset);
+        }
     }
 }
diff --git a/OpenSim/Region/Physics/Manager/PhysicsScene.cs b/OpenSim/Region/Physics/Manager/PhysicsScene.cs
index b32cd30..6a0558a 100644
--- a/OpenSim/Region/Physics/Manager/PhysicsScene.cs
+++ b/OpenSim/Region/Physics/Manager/PhysicsScene.cs
@@ -43,6 +43,9 @@ namespace OpenSim.Region.Physics.Manager
     public delegate void JointDeactivated(PhysicsJoint joint);
     public delegate void JointErrorMessage(PhysicsJoint joint, string message); // this refers to an "error message due to a problem", not "amount of joint constraint violation"
 
+    public delegate void RequestAssetDelegate(UUID assetID, AssetReceivedDelegate callback);
+    public delegate void AssetReceivedDelegate(AssetBase asset);
+
     /// <summary>
     /// Contact result from a raycast.
     /// </summary>
@@ -73,6 +76,8 @@ namespace OpenSim.Region.Physics.Manager
             get { return new NullPhysicsScene(); }
         }
 
+        public RequestAssetDelegate RequestAssetMethod { private get; set; }
+
         public virtual void TriggerPhysicsBasedRestart()
         {
             physicsCrash handler = OnPhysicsCrash;
-- 
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