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1 /++
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2 + Authors: Stephan Dilly, www.extrawurst.org
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3 +/
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4
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5 module gameApp;
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6
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7 import framework;
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8
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9 import drawSpace;
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10
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11 import chipmunkd.chipmunk;
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12
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13 import samples.LogoSmash;
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14 import samples.Simple;
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15 import samples.PyramidStack;
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16 import samples.ChipmunkDemo;
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17 import samples.Plink;
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18 import samples.Tumble;
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19 import samples.PyramidTopple;
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20 import samples.Planet;
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21 import samples.Query;
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22 import samples.OneWay;
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23 import samples.Sensors;
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24 import samples.Bounce;
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25 import samples.Springies;
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26 import samples.Joints;
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27 import samples.MagnetsElectric;
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28 import samples.Player;
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29 import samples.Tank;
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30 import samples.Pump;
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31 import samples.TheoJansen;
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32 import samples.UnsafeOps;
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33
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34 import derelict.opengl.gl;
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35 import derelict.opengl.glu;
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36 import derelict.sdl.sdl;
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37
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38 import std.stdio;
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39 import core.thread:Sleep;
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40
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41 extern(System) ulong GetTickCount();
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42
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43 version = TIME_TRIAL;
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44
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45 cpVect mousePos;
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46 cpVect arrowDirection;
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47
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48 ///
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49 final class GameApp {
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50
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51 private:
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52
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53 chipmunkDemo*[] demos;
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54 chipmunkDemo* currentDemo;
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55 cpSpace* space;
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56 int ticks;
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57 cpBody* mouseBody;
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58 cpConstraint* mouseJoint;
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59 cpVect mousePos_last;
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60
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61 bool key_up = false;
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62 bool key_down = false;
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63 bool key_left = false;
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64 bool key_right = false;
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65
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66 bool m_running = true;
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67
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68 drawSpaceOptions options = {
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69 0, // drawHash
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70 0, // drawBB
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71 1, // drawShapes
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72 4.0f, // collisionPointSize
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73 0.0f, // bodyPointSize
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74 1.5f, // lineThickness
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75 };
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76
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77 enum width = 1024;
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78 enum height = 780;
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79
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80 version(TIME_TRIAL)
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81 {
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82 void time_trial(int index, int count)
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83 {
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84 currentDemo = demos[index];
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85 space = currentDemo.initFunc();
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86
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87 auto start = .GetTickCount();
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88
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89 foreach(i; 0..count)
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90 currentDemo.updateFunc(i);
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91
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92 auto end = .GetTickCount();
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93 auto duration = (end - start);
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94
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95 currentDemo.destroyFunc();
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96 currentDemo = null;
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97
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98 writefln("Time(%s) = %s", cast(char)(index + 'a'), duration);
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99 }
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100 }
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101
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102 ///
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103 public void boot() {
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104
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105 demos = [
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106 &LogoSmash,
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107 &Simple,
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108 &PyramidStack,
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109 &Plink,
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110 &Tumble,
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111 &PyramidTopple,
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112 &Bounce,
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113 &Planet,
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114 &Springies,
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115 &Pump,
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116 &TheoJansen,
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117 &MagnetsElectric,
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118 &UnsafeOps,
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119 &Query,
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120 &OneWay,
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121 &Player,
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122 &Sensors,
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123 &Joints,
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124 &Tank,
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125 ];
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126
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127 cpInitChipmunk();
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128
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129 cp_collision_slop = 0.2f;
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130
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131 version(TIME_TRIAL)
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132 {
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133 Sleep(1);
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134 foreach(i; 0..demos.length)
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135 {
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136 //if(i == 'l' - 'a') continue;
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137 time_trial(i, 1000);
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138 }
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139
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140 m_running = false;
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141
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142 return;
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143 }//TIME_TRIAL
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144
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145 //setup framework
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146 framework.startup("chipmunk'd by Stephan Dilly",width,height);
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147
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148 reshape(width,height);
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149
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150 glEnableClientState(GL_VERTEX_ARRAY);
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151
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152 runDemo(demos[0]);
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153
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154 mouseBody = cpBodyNew(INFINITY, INFINITY);
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155 }
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156
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157 ///
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158 void runDemo(chipmunkDemo *demo)
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159 {
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160 if(currentDemo)
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161 currentDemo.destroyFunc();
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162
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163 currentDemo = demo;
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164 ticks = 0;
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165 mouseJoint = null;
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166
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167 //maxArbiters = 0;
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168 //maxPoints = 0;
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169 //maxConstraints = 0;
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170 space = currentDemo.initFunc();
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171 }
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172
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173 ///
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174 void reshape(int width, int height)
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175 {
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176 glViewport(0, 0, width, height);
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177
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178 double rx = width / 2.0;
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179 double ry = height / 2.0;
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180
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181 glMatrixMode(GL_PROJECTION);
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182 glLoadIdentity();
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183 glOrtho(-rx, rx, -ry, ry, -1.0, 1.0);
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184 glTranslated(0.5, 0.5, 0.0);
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185 }
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186
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187 ///
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188 public bool update() {
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189
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190 if(!m_running) return m_running;
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191
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192 if(!framework.processEvents(&keyEvent,&mouseMove,&mouseButtonEvent))
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193 return false;
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194
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195 cpVect newPoint = cpvlerp(mousePos_last, mousePos, 0.25f);
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196 mouseBody.p = newPoint;
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197 mouseBody.v = cpvmult(cpvsub(newPoint, mousePos_last), 60.0f);
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198 mousePos_last = newPoint;
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199
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200 currentDemo.updateFunc(ticks++);
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201
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202 // render
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203
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204 glClearColor(1,1,1,1);
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205
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206 glClear(GL_COLOR_BUFFER_BIT);
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207
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208 DrawSpace(space,currentDemo.drawOptions ? currentDemo.drawOptions : &options);
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209
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210 SDL_GL_SwapBuffers();
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211
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212 return m_running;
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213 }
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214
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215 ///
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216 public void shutdown() {
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217
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218 version(TIME_TRIAL){}else
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219 {
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220 currentDemo.destroyFunc();
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221
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222 framework.shutdown();
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223 }
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224 }
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225
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226 cpVect mouseToSpace(int x, int y)
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227 {
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228 GLdouble model[16];
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229 glGetDoublev(GL_MODELVIEW_MATRIX, model.ptr);
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230
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231 GLdouble proj[16];
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232 glGetDoublev(GL_PROJECTION_MATRIX, proj.ptr);
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233
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234 GLint view[4];
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235 glGetIntegerv(GL_VIEWPORT, view.ptr);
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236
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237 GLdouble mx, my, mz;
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238 gluUnProject(x, height - y, 0.0f, model.ptr, proj.ptr, view.ptr, &mx, &my, &mz);
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239
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240 return cpv(mx, my);
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241 }
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242
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243 ///
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244 private void mouseMove(int x,int y)
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245 {
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246 mousePos = mouseToSpace(x,y);
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247 }
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248
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249 ///
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250 private void mouseButtonEvent(int x,int y,bool _down)
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251 {
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252 if(_down){
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253 cpVect point = mouseToSpace(x,y);
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254
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255 cpShape *shape = cpSpacePointQueryFirst(space, point, GRABABLE_MASK_BIT, CP_NO_GROUP);
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256 if(shape){
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257 cpBody *_body = shape._body;
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258 mouseJoint = cpPivotJointNew2(mouseBody, _body, cpvzero, cpBodyWorld2Local(_body, point));
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259 mouseJoint.maxForce = 50000.0f;
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260 mouseJoint.biasCoef = 0.15f;
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261 cpSpaceAddConstraint(space, mouseJoint);
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262 }
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263 } else if(mouseJoint){
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264 cpSpaceRemoveConstraint(space, mouseJoint);
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265 cpConstraintFree(mouseJoint);
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266 mouseJoint = null;
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267 }
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268 }
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269
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270 ///
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271 private void set_arrowDirection()
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272 {
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273 int x = 0, y = 0;
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274
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275 if(key_up) y += 1;
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276 if(key_down) y -= 1;
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277 if(key_right) x += 1;
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278 if(key_left) x -= 1;
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279
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280 arrowDirection = cpv(x, y);
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281 }
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282
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283 ///
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284 private void keyEvent(int _key,bool _down)
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285 {
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286 int key = _key;
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287
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288 if(_down)
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289 {
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290 int index = key - 'a';
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291
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292 if(0 <= index && index < demos.length){
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293 runDemo(demos[index]);
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294 } else if(key == '\r'){
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295 runDemo(currentDemo);
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296 } else if(key == 47){
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297 options.drawHash = !options.drawHash;
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298 } else if(key == 92){
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299 options.drawBBs = !options.drawBBs;
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300 } else if(key == 93){
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301 glEnable(GL_LINE_SMOOTH);
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302 glEnable(GL_POINT_SMOOTH);
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303 glEnable(GL_BLEND);
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304 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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305 glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
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306 glHint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
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307 }
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308 else
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309 {
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310 if(key == SDLK_UP) key_up = true;
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311 else if(key == SDLK_DOWN) key_down = true;
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312 else if(key == SDLK_LEFT) key_left = true;
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313 else if(key == SDLK_RIGHT) key_right = true;
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314
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315 set_arrowDirection();
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316 }
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317 }
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318 else
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319 {
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320 if(key == SDLK_UP) key_up = false;
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321 else if(key == SDLK_DOWN) key_down = false;
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322 else if(key == SDLK_LEFT) key_left = false;
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323 else if(key == SDLK_RIGHT) key_right = false;
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324
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325 set_arrowDirection();
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326 }
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327 }
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328 }
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329
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