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diff --git a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsScene.cs b/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsScene.cs
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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 copyright
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 */
27
28using System;
29using System.Collections.Generic;
30using Nini.Config;
31using OpenMetaverse;
32using OpenSim.Framework;
33using OpenSim.Region.Physics.Manager;
34
35namespace OpenSim.Region.Physics.BasicPhysicsPlugin
36{
37 /// <summary>
38 /// This is an incomplete extremely basic physics implementation
39 /// </summary>
40 /// <remarks>
41 /// Not useful for anything at the moment apart from some regression testing in other components where some form
42 /// of physics plugin is needed.
43 /// </remarks>
44 public class BasicScene : PhysicsScene
45 {
46 private List<BasicActor> _actors = new List<BasicActor>();
47 private List<BasicPhysicsPrim> _prims = new List<BasicPhysicsPrim>();
48 private float[] _heightMap;
49 private Vector3 m_regionExtent;
50
51 //protected internal string sceneIdentifier;
52
53 public BasicScene(string engineType, string _sceneIdentifier)
54 {
55 EngineType = engineType;
56 Name = EngineType + "/" + _sceneIdentifier;
57 //sceneIdentifier = _sceneIdentifier;
58 }
59
60 public override void Initialise(IMesher meshmerizer, IConfigSource config)
61 {
62 throw new Exception("Should not be called.");
63 }
64
65 public override void Initialise(IMesher meshmerizer, IConfigSource config, Vector3 regionExtent)
66 {
67 m_regionExtent = regionExtent;
68 }
69
70 public override void Dispose() {}
71
72 public override PhysicsActor AddPrimShape(string primName, PrimitiveBaseShape pbs, Vector3 position,
73 Vector3 size, Quaternion rotation, bool isPhysical, uint localid)
74 {
75 BasicPhysicsPrim prim = new BasicPhysicsPrim(primName, localid, position, size, rotation, pbs);
76 prim.IsPhysical = isPhysical;
77
78 _prims.Add(prim);
79
80 return prim;
81 }
82
83 public override PhysicsActor AddAvatar(string avName, Vector3 position, Vector3 velocity, Vector3 size, bool isFlying)
84 {
85 BasicActor act = new BasicActor(size);
86 act.Position = position;
87 act.Velocity = velocity;
88 act.Flying = isFlying;
89 _actors.Add(act);
90 return act;
91 }
92
93 public override void RemovePrim(PhysicsActor actor)
94 {
95 BasicPhysicsPrim prim = (BasicPhysicsPrim)actor;
96 if (_prims.Contains(prim))
97 _prims.Remove(prim);
98 }
99
100 public override void RemoveAvatar(PhysicsActor actor)
101 {
102 BasicActor act = (BasicActor)actor;
103 if (_actors.Contains(act))
104 _actors.Remove(act);
105 }
106
107 public override void AddPhysicsActorTaint(PhysicsActor prim)
108 {
109 }
110
111 public override float Simulate(float timeStep)
112 {
113// Console.WriteLine("Simulating");
114
115 float fps = 0;
116 for (int i = 0; i < _actors.Count; ++i)
117 {
118 BasicActor actor = _actors[i];
119 Vector3 actorPosition = actor.Position;
120 Vector3 actorVelocity = actor.Velocity;
121
122// Console.WriteLine(
123// "Processing actor {0}, starting pos {1}, starting vel {2}", i, actorPosition, actorVelocity);
124
125 actorPosition.X += actor.Velocity.X * timeStep;
126 actorPosition.Y += actor.Velocity.Y * timeStep;
127
128 if (actor.Position.Y < 0)
129 {
130 actorPosition.Y = 0.1F;
131 }
132 else if (actor.Position.Y >= m_regionExtent.Y)
133 {
134 actorPosition.Y = (m_regionExtent.Y - 0.1f);
135 }
136
137 if (actor.Position.X < 0)
138 {
139 actorPosition.X = 0.1F;
140 }
141 else if (actor.Position.X >= m_regionExtent.X)
142 {
143 actorPosition.X = (m_regionExtent.X - 0.1f);
144 }
145
146 float terrainHeight = 0;
147 if (_heightMap != null)
148 terrainHeight = _heightMap[(int)actor.Position.Y * (int)m_regionExtent.Y + (int)actor.Position.X];
149
150 float height = terrainHeight + actor.Size.Z;
151// Console.WriteLine("height {0}, actorPosition {1}", height, actorPosition);
152
153 if (actor.Flying)
154 {
155 if (actor.Position.Z + (actor.Velocity.Z * timeStep) < terrainHeight + 2)
156 {
157 actorPosition.Z = height;
158 actorVelocity.Z = 0;
159 actor.IsColliding = true;
160 }
161 else
162 {
163 actorPosition.Z += actor.Velocity.Z * timeStep;
164 actor.IsColliding = false;
165 }
166 }
167 else
168 {
169 actorPosition.Z = height;
170 actorVelocity.Z = 0;
171 actor.IsColliding = true;
172 }
173
174 actor.Position = actorPosition;
175 actor.Velocity = actorVelocity;
176 }
177
178 return 1.0f;
179 }
180
181 public override void GetResults()
182 {
183 }
184
185 public override bool IsThreaded
186 {
187 get { return (false); // for now we won't be multithreaded
188 }
189 }
190
191 public override void SetTerrain(float[] heightMap)
192 {
193 _heightMap = heightMap;
194 }
195
196 public override void DeleteTerrain()
197 {
198 }
199
200 public override void SetWaterLevel(float baseheight)
201 {
202 }
203
204 public override Dictionary<uint, float> GetTopColliders()
205 {
206 Dictionary<uint, float> returncolliders = new Dictionary<uint, float>();
207 return returncolliders;
208 }
209 }
210}
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