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1
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2 // written in the D programming language
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3
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16
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4 /++
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5 + Authors: Stephan Dilly, www.extrawurst.org
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6 +/
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7
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8 module gameApp;
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9
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10 import framework;
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11
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12 import drawSpace;
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13
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14 import chipmunkd.chipmunk;
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15
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16 import samples.LogoSmash;
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17 import samples.Simple;
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18 import samples.PyramidStack;
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19 import samples.ChipmunkDemo;
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20 import samples.Plink;
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21 import samples.Tumble;
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22 import samples.PyramidTopple;
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23 import samples.Planet;
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24 import samples.Query;
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25 import samples.OneWay;
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26 import samples.Sensors;
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27 import samples.Bounce;
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28 import samples.Springies;
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29 import samples.Joints;
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30 import samples.MagnetsElectric;
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31 import samples.Player;
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32 import samples.Tank;
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33 import samples.Pump;
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34 import samples.TheoJansen;
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35 import samples.UnsafeOps;
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26
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36 import samples.Nukeit;
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16
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37
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21
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38 // using derelict bindings for sdl/opengl
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39 import derelict.opengl.gl;
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40 import derelict.opengl.glu;
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41 import derelict.sdl.sdl;
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42
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43 import std.stdio;
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21
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44 import core.thread;
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16
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45
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46 version = TIME_TRIAL;
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47
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48 cpVect mousePos;
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49 cpVect arrowDirection;
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50
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51 bool key_up = false;
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52 bool key_down = false;
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53 bool key_left = false;
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54 bool key_right = false;
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55 bool key_space = false;
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56
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57 ///
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58 final class GameApp {
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59
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60 private:
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61
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62 chipmunkDemo*[] demos;
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63 chipmunkDemo* currentDemo;
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64 cpSpace* space;
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65 int ticks;
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66 cpBody* mouseBody;
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67 cpConstraint* mouseJoint;
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68 cpVect mousePos_last;
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69
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70 bool m_running = true;
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71
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72 drawSpaceOptions options = {
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73 0, // drawHash
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74 0, // drawBB
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75 1, // drawShapes
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76 4.0f, // collisionPointSize
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77 0.0f, // bodyPointSize
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78 1.5f, // lineThickness
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79 };
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80
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81 enum width = 1024;
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82 enum height = 780;
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83
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84 version(TIME_TRIAL)
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85 {
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86 ulong time_trial(int index, int count)
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87 {
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88 currentDemo = demos[index];
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89 space = currentDemo.initFunc();
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90
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91 auto start = .tickCount();
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92
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93 foreach(i; 0..count)
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94 currentDemo.updateFunc(i);
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95
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96 auto end = .tickCount();
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97 auto duration = (end - start);
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98
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99 currentDemo.destroyFunc();
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100 currentDemo = null;
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101
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102 writefln("Time(%s) = %s", cast(char)(index + 'a'), duration);
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103
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104 return duration;
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105 }
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106 }
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107
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108 ///
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109 public void boot() {
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110
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111 demos = [
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112 &LogoSmash,
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113 //&Simple,
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114 &PyramidStack,
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115 &Plink,
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116 &Tumble,
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117 &PyramidTopple,
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118 &Bounce,
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119 &Planet,
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120 &Springies,
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121 &Pump,
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122 &TheoJansen,
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123 &MagnetsElectric,
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124 &UnsafeOps,
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125 &Query,
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126 &OneWay,
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127 &Player,
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128 &Sensors,
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129 &Joints,
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130 &Tank,
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131 ];
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132
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133 cpInitChipmunk();
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134
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135 cp_collision_slop = 0.2f;
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136
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137 version(TIME_TRIAL)
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138 {
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139 Thread.sleep(2_000_000);
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140 ulong duration;
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141 foreach(i; 0..demos.length)
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142 {
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143 if(i == 'l'-'a') continue;
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144 duration+=time_trial(i, 1000);
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145 }
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146
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147 writefln("Time accum = %s", duration);
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148
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149 m_running = false;
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150
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151 return;
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152 }//TIME_TRIAL
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153
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154 //setup framework
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155 framework.startup("chipmunk'd by Stephan Dilly",width,height,false);
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156
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157 reshape(width,height);
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158
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159 glEnableClientState(GL_VERTEX_ARRAY);
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160
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161 runDemo(&LogoSmash);
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162
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163 mouseBody = cpBodyNew(INFINITY, INFINITY);
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164 }
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165
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166 ///
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167 void runDemo(chipmunkDemo *demo)
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168 {
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169 if(currentDemo)
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170 currentDemo.destroyFunc();
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171
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172 currentDemo = demo;
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173 ticks = 0;
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174 mouseJoint = null;
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175
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176 //maxArbiters = 0;
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177 //maxPoints = 0;
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178 //maxConstraints = 0;
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179 space = currentDemo.initFunc();
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180 }
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181
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182 ///
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183 void reshape(int width, int height)
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184 {
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185 glViewport(0, 0, width, height);
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186
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187 double rx = width / 2.0;
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188 double ry = height / 2.0;
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189
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190 glMatrixMode(GL_PROJECTION);
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191 glLoadIdentity();
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192 glOrtho(-rx, rx, -ry, ry, -1.0, 1.0);
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193 glTranslated(0.5, 0.5, 0.0);
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194 }
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195
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196 ///
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197 public bool update() {
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198
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199 if(!m_running) return m_running;
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200
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201 if(!framework.processEvents(&keyEvent,&mouseMove,&mouseButtonEvent))
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202 return false;
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203
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204 cpVect newPoint = cpvlerp(mousePos_last, mousePos, 0.25f);
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205 mouseBody.p = newPoint;
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206 mouseBody.v = cpvmult(cpvsub(newPoint, mousePos_last), 60.0f);
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207 mousePos_last = newPoint;
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208
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209 currentDemo.updateFunc(ticks++);
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210
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211 // render
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212
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213 glClearColor(1,1,1,1);
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214
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215 glClear(GL_COLOR_BUFFER_BIT);
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216
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217 DrawSpace(space,currentDemo.drawOptions ? currentDemo.drawOptions : &options);
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218
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219 SDL_GL_SwapBuffers();
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220
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221 return m_running;
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222 }
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223
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224 ///
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225 public void shutdown() {
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226
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227 version(TIME_TRIAL){}else
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228 {
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229 currentDemo.destroyFunc();
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230
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231 framework.shutdown();
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232 }
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233 }
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234
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235 cpVect mouseToSpace(int x, int y)
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236 {
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237 GLdouble model[16];
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238 glGetDoublev(GL_MODELVIEW_MATRIX, model.ptr);
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239
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240 GLdouble proj[16];
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241 glGetDoublev(GL_PROJECTION_MATRIX, proj.ptr);
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242
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243 GLint view[4];
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244 glGetIntegerv(GL_VIEWPORT, view.ptr);
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245
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246 GLdouble mx, my, mz;
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247 gluUnProject(x, height - y, 0.0f, model.ptr, proj.ptr, view.ptr, &mx, &my, &mz);
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248
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249 return cpv(mx, my);
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250 }
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251
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252 ///
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253 private void mouseMove(int x,int y)
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254 {
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255 mousePos = mouseToSpace(x,y);
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256 }
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257
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258 ///
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259 private void mouseButtonEvent(int x,int y,bool _down)
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260 {
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261 if(_down){
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262 cpVect point = mouseToSpace(x,y);
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263
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264 cpShape *shape = cpSpacePointQueryFirst(space, point, GRABABLE_MASK_BIT, CP_NO_GROUP);
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265 if(shape){
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266 cpBody *_body = shape._body;
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267 mouseJoint = cpPivotJointNew2(mouseBody, _body, cpvzero, cpBodyWorld2Local(_body, point));
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268 mouseJoint.maxForce = 50000.0f;
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269 mouseJoint.biasCoef = 0.15f;
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270 cpSpaceAddConstraint(space, mouseJoint);
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271 }
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272 } else if(mouseJoint){
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273 cpSpaceRemoveConstraint(space, mouseJoint);
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274 cpConstraintFree(mouseJoint);
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275 mouseJoint = null;
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276 }
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277 }
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278
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279 ///
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280 private void set_arrowDirection()
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281 {
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282 int x = 0, y = 0;
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283
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284 if(key_up) y += 1;
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285 if(key_down) y -= 1;
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286 if(key_right) x += 1;
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287 if(key_left) x -= 1;
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288
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289 arrowDirection = cpv(x, y);
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290 }
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291
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292 ///
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293 private void keyEvent(int _key,bool _down)
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294 {
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295 int key = _key;
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296
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297 if(_down)
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298 {
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299 int index = key - 'a';
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300
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301 if(0 <= index && index < demos.length){
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302 runDemo(demos[index]);
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303 } else if(key == '\r'){
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304 runDemo(currentDemo);
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305 } else if(key == 47){
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306 options.drawHash = !options.drawHash;
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307 } else if(key == 92){
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308 options.drawBBs = !options.drawBBs;
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309 } else if(key == 27){
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310 m_running = false;
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311 } else if(key == 93){
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312 glEnable(GL_LINE_SMOOTH);
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313 glEnable(GL_POINT_SMOOTH);
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314 glEnable(GL_BLEND);
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315 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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316 glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
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317 glHint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
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318 }
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319 else
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320 {
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321 if(key == SDLK_UP) key_up = true;
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322 else if(key == SDLK_DOWN) key_down = true;
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323 else if(key == SDLK_LEFT) key_left = true;
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324 else if(key == SDLK_RIGHT) key_right = true;
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325 else if(key == SDLK_SPACE) key_space = true;
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326
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327 set_arrowDirection();
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328 }
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329 }
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330 else
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331 {
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332 if(key == SDLK_UP) key_up = false;
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333 else if(key == SDLK_DOWN) key_down = false;
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334 else if(key == SDLK_LEFT) key_left = false;
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335 else if(key == SDLK_RIGHT) key_right = false;
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336 else if(key == SDLK_SPACE) key_space = false;
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337
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338 set_arrowDirection();
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339 }
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340 }
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341 }
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342
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