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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <math.h>
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4 #include "opengl.h"
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5 #include "game.h"
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6 #include "camera.h"
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7
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8 static void draw_quad(float sz);
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9
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10 static int win_width, win_height;
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11
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12
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13 int game_init(void)
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14 {
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15 glEnable(GL_DEPTH_TEST);
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16 glEnable(GL_CULL_FACE);
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17 //glEnable(GL_LIGHTING);
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18
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19 glClearColor(0.4, 0.4, 0.4, 1);
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20 return 0;
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21 }
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22
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23 void game_shutdown(void)
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24 {
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25 }
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26
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27 void game_display(unsigned long msec)
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28 {
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29 unsigned int tex = cam_texture();
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30 //cam_update();
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31
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32 //float tsec = (float)msec / 1000.0f;
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33
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34 //glClearColor(sin(tsec * 10.0), cos(tsec * 10.0), -sin(tsec * 10.0), 1.0);
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35 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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36
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37 glMatrixMode(GL_MODELVIEW);
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38 glLoadIdentity();
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39
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40 if(tex) {
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41 glBindTexture(GL_TEXTURE_EXTERNAL_OES, tex);
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42 glEnable(GL_TEXTURE_EXTERNAL_OES);
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43
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44 draw_quad(0.5);
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45
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46 glDisable(GL_TEXTURE_EXTERNAL_OES);
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47 }
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48 }
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49
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50 static void draw_quad(float sz)
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51 {
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52 static const float varr[] = {-1, -1, 1, -1, 1, 1, -1, 1};
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53 static const float tcarr[] = {0, 0, 1, 0, 1, 1, 0, 1};
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54 static const float colarr[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
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55
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56 glPushMatrix();
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57 glScalef(sz, sz, sz);
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58
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59 glEnableClientState(GL_VERTEX_ARRAY);
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60 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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61 glEnableClientState(GL_COLOR_ARRAY);
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62
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63 glVertexPointer(2, GL_FLOAT, 0, varr);
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64 glTexCoordPointer(2, GL_FLOAT, 0, tcarr);
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65 glColorPointer(3, GL_FLOAT, 0, colarr);
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66
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67 glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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68
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69 glDisableClientState(GL_VERTEX_ARRAY);
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70 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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71 glDisableClientState(GL_COLOR_ARRAY);
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72
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73 glPopMatrix();
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74 }
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75
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76 void game_reshape(int x, int y)
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77 {
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78 win_width = x;
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79 win_height = y;
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80 glViewport(0, 0, x, y);
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81
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82 glMatrixMode(GL_PROJECTION);
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83 glLoadIdentity();
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84 glScalef((float)win_height / (float)win_width, 1.0, 1.0);
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85 }
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86
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87 void game_keyboard(int key, int pressed)
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88 {
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89 if(!pressed) return;
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90
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91 switch(key) {
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92 case 27:
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93 exit(0);
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94
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95 default:
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96 break;
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97 }
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98 }
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99
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100 #define MAX_TOUCH_IDS 16
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101 static struct {
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102 int bnstate[8];
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103 int prev_x, prev_y;
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104 } mstate[MAX_TOUCH_IDS];
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105
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106 void game_mouse_button(int id, int bn, int pressed, int x, int y)
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107 {
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108 if(id >= MAX_TOUCH_IDS) return;
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109
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110 mstate[id].prev_x = x;
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111 mstate[id].prev_y = y;
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112 mstate[id].bnstate[bn] = pressed;
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113 }
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114
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115 void game_mouse_motion(int id, int x, int y)
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116 {
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117 /*
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118 int dx, dy, cx, cy;
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119
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120 if(id >= MAX_TOUCH_IDS) return;
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121
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122 cx = win_width / 2;
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123 cy = win_height / 2;
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124
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125 dx = x - mstate[id].prev_x;
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126 dy = y - mstate[id].prev_y;
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127 mstate[id].prev_x = x;
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128 mstate[id].prev_y = y;
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129
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130 if(!dx && !dy) return;
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131
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132 if(mouselook || mstate[id].bnstate[0]) {
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133 player_turn(&player, dx * 0.5, dy * 0.5);
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134 }
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135 if(mstate[id].bnstate[2]) {
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136 dbg_cam_dist += 0.1 * dy;
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137 if(dbg_cam_dist < 0.0) dbg_cam_dist = 0.0;
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138 }
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139
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140 if(mouselook) {
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141 warping_mouse = 1;
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142 set_mouse_pos(cx, cy);
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143 mstate[id].prev_x = cx;
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144 mstate[id].prev_y = cy;
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145 }
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146 */
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147 }
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148
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