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1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyrightD
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27using System;
28using System.Collections.Generic;
29using System.Text;
30
31namespace OpenSim.Region.PhysicsModule.BulletS
32{
33public class BSActorCollection
34{
35 private Dictionary<string, BSActor> m_actors;
36
37 public BSActorCollection()
38 {
39 m_actors = new Dictionary<string, BSActor>();
40 }
41 public void Add(string name, BSActor actor)
42 {
43 lock (m_actors)
44 {
45 if (!m_actors.ContainsKey(name))
46 {
47 m_actors[name] = actor;
48 }
49 }
50 }
51 public bool RemoveAndRelease(string name)
52 {
53 bool ret = false;
54 lock (m_actors)
55 {
56 if (m_actors.ContainsKey(name))
57 {
58 BSActor beingRemoved = m_actors[name];
59 m_actors.Remove(name);
60 beingRemoved.Dispose();
61 ret = true;
62 }
63 }
64 return ret;
65 }
66 public void Clear()
67 {
68 lock (m_actors)
69 {
70 ForEachActor(a => a.Dispose());
71 m_actors.Clear();
72 }
73 }
74 public void Dispose()
75 {
76 Clear();
77 }
78 public bool HasActor(string name)
79 {
80 return m_actors.ContainsKey(name);
81 }
82 public bool TryGetActor(string actorName, out BSActor theActor)
83 {
84 return m_actors.TryGetValue(actorName, out theActor);
85 }
86 public void ForEachActor(Action<BSActor> act)
87 {
88 lock (m_actors)
89 {
90 foreach (KeyValuePair<string, BSActor> kvp in m_actors)
91 act(kvp.Value);
92 }
93 }
94
95 public void Enable(bool enabl)
96 {
97 ForEachActor(a => a.SetEnabled(enabl));
98 }
99 public void Refresh()
100 {
101 ForEachActor(a => a.Refresh());
102 }
103 public void RemoveDependencies()
104 {
105 ForEachActor(a => a.RemoveDependencies());
106 }
107}
108
109// =============================================================================
110/// <summary>
111/// Each physical object can have 'actors' who are pushing the object around.
112/// This can be used for hover, locking axis, making vehicles, etc.
113/// Each physical object can have multiple actors acting on it.
114///
115/// An actor usually registers itself with physics scene events (pre-step action)
116/// and modifies the parameters on the host physical object.
117/// </summary>
118public abstract class BSActor
119{
120 protected BSScene m_physicsScene { get; private set; }
121 protected BSPhysObject m_controllingPrim { get; private set; }
122 public virtual bool Enabled { get; set; }
123 public string ActorName { get; private set; }
124
125 public BSActor(BSScene physicsScene, BSPhysObject pObj, string actorName)
126 {
127 m_physicsScene = physicsScene;
128 m_controllingPrim = pObj;
129 ActorName = actorName;
130 Enabled = true;
131 }
132
133 // Return 'true' if activily updating the prim
134 public virtual bool isActive
135 {
136 get { return Enabled; }
137 }
138
139 // Turn the actor on an off. Only used by ActorCollection to set all enabled/disabled.
140 // Anyone else should assign true/false to 'Enabled'.
141 public void SetEnabled(bool setEnabled)
142 {
143 Enabled = setEnabled;
144 }
145 // Release any connections and resources used by the actor.
146 public abstract void Dispose();
147 // Called when physical parameters (properties set in Bullet) need to be re-applied.
148 public abstract void Refresh();
149 // The object's physical representation is being rebuilt so pick up any physical dependencies (constraints, ...).
150 // Register a prestep action to restore physical requirements before the next simulation step.
151 public abstract void RemoveDependencies();
152
153}
154}