opensim – Blame information for rev 1
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1 | eva | 1 | /* |
2 | * Copyright (c) Contributors, http://opensimulator.org/ |
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3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions are met: |
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7 | * * Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * * Redistributions in binary form must reproduce the above copyright |
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10 | * notice, this list of conditions and the following disclaimer in the |
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11 | * documentation and/or other materials provided with the distribution. |
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12 | * * Neither the name of the OpenSimulator Project nor the |
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13 | * names of its contributors may be used to endorse or promote products |
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14 | * derived from this software without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY |
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17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY |
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20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | |||
28 | using System; |
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29 | using System.Collections.Generic; |
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30 | using Mono.Addins; |
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31 | using Nini.Config; |
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32 | using OpenMetaverse; |
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33 | using OpenSim.Framework; |
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34 | using OpenSim.Region.Framework.Interfaces; |
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35 | using OpenSim.Region.Framework.Scenes; |
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36 | |||
37 | namespace OpenSim.Region.CoreModules.World |
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38 | { |
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39 | [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "CloudModule")] |
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40 | public class CloudModule : ICloudModule, INonSharedRegionModule |
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41 | { |
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42 | // private static readonly log4net.ILog m_log |
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43 | // = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); |
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44 | private uint m_frame = 0; |
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45 | private int m_frameUpdateRate = 1000; |
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46 | private Random m_rndnums = new Random(Environment.TickCount); |
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47 | private Scene m_scene = null; |
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48 | private bool m_ready = false; |
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49 | private bool m_enabled = false; |
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50 | private float m_cloudDensity = 1.0F; |
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51 | private float[] cloudCover = new float[16 * 16]; |
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52 | |||
53 | public void Initialise(IConfigSource config) |
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54 | { |
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55 | IConfig cloudConfig = config.Configs["Cloud"]; |
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56 | |||
57 | if (cloudConfig != null) |
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58 | { |
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59 | m_enabled = cloudConfig.GetBoolean("enabled", false); |
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60 | m_cloudDensity = cloudConfig.GetFloat("density", 0.5F); |
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61 | m_frameUpdateRate = cloudConfig.GetInt("cloud_update_rate", 1000); |
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62 | } |
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63 | |||
64 | } |
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65 | |||
66 | public void AddRegion(Scene scene) |
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67 | { |
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68 | if (!m_enabled) |
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69 | return; |
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70 | |||
71 | m_scene = scene; |
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72 | |||
73 | scene.EventManager.OnNewClient += CloudsToClient; |
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74 | scene.RegisterModuleInterface<ICloudModule>(this); |
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75 | scene.EventManager.OnFrame += CloudUpdate; |
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76 | |||
77 | GenerateCloudCover(); |
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78 | |||
79 | m_ready = true; |
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80 | } |
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81 | |||
82 | public void RemoveRegion(Scene scene) |
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83 | { |
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84 | if (!m_enabled) |
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85 | return; |
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86 | |||
87 | m_ready = false; |
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88 | // Remove our hooks |
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89 | m_scene.EventManager.OnNewClient -= CloudsToClient; |
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90 | m_scene.EventManager.OnFrame -= CloudUpdate; |
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91 | m_scene.UnregisterModuleInterface<ICloudModule>(this); |
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92 | |||
93 | m_scene = null; |
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94 | } |
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95 | |||
96 | public void RegionLoaded(Scene scene) |
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97 | { |
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98 | } |
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99 | |||
100 | public void PostInitialise() |
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101 | { |
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102 | } |
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103 | |||
104 | public void Close() |
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105 | { |
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106 | } |
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107 | |||
108 | public string Name |
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109 | { |
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110 | get { return "CloudModule"; } |
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111 | } |
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112 | |||
113 | public Type ReplaceableInterface |
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114 | { |
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115 | get { return null; } |
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116 | } |
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117 | |||
118 | public float CloudCover(int x, int y, int z) |
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119 | { |
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120 | float cover = 0f; |
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121 | x /= 16; |
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122 | y /= 16; |
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123 | if (x < 0) x = 0; |
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124 | if (x > 15) x = 15; |
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125 | if (y < 0) y = 0; |
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126 | if (y > 15) y = 15; |
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127 | |||
128 | if (cloudCover != null) |
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129 | { |
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130 | cover = cloudCover[y * 16 + x]; |
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131 | } |
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132 | |||
133 | return cover; |
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134 | } |
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135 | |||
136 | private void UpdateCloudCover() |
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137 | { |
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138 | float[] newCover = new float[16 * 16]; |
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139 | int rowAbove = new int(); |
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140 | int rowBelow = new int(); |
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141 | int columnLeft = new int(); |
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142 | int columnRight = new int(); |
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143 | for (int x = 0; x < 16; x++) |
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144 | { |
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145 | if (x == 0) |
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146 | { |
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147 | columnRight = x + 1; |
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148 | columnLeft = 15; |
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149 | } |
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150 | else if (x == 15) |
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151 | { |
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152 | columnRight = 0; |
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153 | columnLeft = x - 1; |
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154 | } |
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155 | else |
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156 | { |
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157 | columnRight = x + 1; |
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158 | columnLeft = x - 1; |
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159 | } |
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160 | for (int y = 0; y< 16; y++) |
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161 | { |
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162 | if (y == 0) |
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163 | { |
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164 | rowAbove = y + 1; |
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165 | rowBelow = 15; |
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166 | } |
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167 | else if (y == 15) |
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168 | { |
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169 | rowAbove = 0; |
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170 | rowBelow = y - 1; |
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171 | } |
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172 | else |
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173 | { |
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174 | rowAbove = y + 1; |
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175 | rowBelow = y - 1; |
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176 | } |
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177 | float neighborAverage = (cloudCover[rowBelow * 16 + columnLeft] + |
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178 | cloudCover[y * 16 + columnLeft] + |
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179 | cloudCover[rowAbove * 16 + columnLeft] + |
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180 | cloudCover[rowBelow * 16 + x] + |
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181 | cloudCover[rowAbove * 16 + x] + |
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182 | cloudCover[rowBelow * 16 + columnRight] + |
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183 | cloudCover[y * 16 + columnRight] + |
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184 | cloudCover[rowAbove * 16 + columnRight] + |
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185 | cloudCover[y * 16 + x]) / 9; |
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186 | newCover[y * 16 + x] = ((neighborAverage / m_cloudDensity) + 0.175f) % 1.0f; |
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187 | newCover[y * 16 + x] *= m_cloudDensity; |
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188 | } |
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189 | } |
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190 | Array.Copy(newCover, cloudCover, 16 * 16); |
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191 | } |
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192 | |||
193 | private void CloudUpdate() |
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194 | { |
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195 | if (((m_frame++ % m_frameUpdateRate) != 0) || !m_ready || (m_cloudDensity == 0)) |
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196 | { |
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197 | return; |
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198 | } |
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199 | UpdateCloudCover(); |
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200 | } |
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201 | |||
202 | public void CloudsToClient(IClientAPI client) |
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203 | { |
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204 | if (m_ready) |
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205 | { |
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206 | client.SendCloudData(cloudCover); |
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207 | } |
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208 | } |
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209 | |||
210 | |||
211 | /// <summary> |
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212 | /// Calculate the cloud cover over the region. |
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213 | /// </summary> |
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214 | private void GenerateCloudCover() |
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215 | { |
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216 | for (int y = 0; y < 16; y++) |
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217 | { |
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218 | for (int x = 0; x < 16; x++) |
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219 | { |
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220 | cloudCover[y * 16 + x] = (float)(m_rndnums.NextDouble()); // 0 to 1 |
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221 | cloudCover[y * 16 + x] *= m_cloudDensity; |
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222 | } |
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223 | } |
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224 | } |
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225 | } |
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226 | } |