dungeon_crawler

annotate prototype/src/main.cc @ 7:8fb37db44fd8

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first person motion
author John Tsiombikas <nuclear@member.fsf.org>
date Fri, 17 Aug 2012 14:29:37 +0300
parents 252a00508411
children b10ba85f75e0
rev   line source
nuclear@1 1 #include <stdio.h>
nuclear@1 2 #include <stdlib.h>
nuclear@1 3 #include <assert.h>
nuclear@7 4 #include <unistd.h>
nuclear@1 5 #include "opengl.h"
nuclear@1 6 #include "level.h"
nuclear@1 7 #include "camera.h"
nuclear@5 8 #include "datapath.h"
nuclear@5 9 #include "tileset.h"
nuclear@1 10
nuclear@5 11 bool init();
nuclear@5 12 void cleanup();
nuclear@7 13 void idle();
nuclear@1 14 void disp();
nuclear@7 15 void update(unsigned long msec);
nuclear@1 16 void reshape(int x, int y);
nuclear@1 17 void keyb(unsigned char key, int x, int y);
nuclear@7 18 void key_release(unsigned char key, int x, int y);
nuclear@1 19 void mouse(int bn, int state, int x, int y);
nuclear@1 20 void motion(int x, int y);
nuclear@1 21
nuclear@5 22 static TileSet *tileset;
nuclear@1 23 static Level *level;
nuclear@7 24
nuclear@7 25 static FpsCamera cam;
nuclear@7 26 static bool keystate[256];
nuclear@1 27
nuclear@5 28 static const char *level_file = "0.level";
nuclear@5 29
nuclear@1 30 int main(int argc, char **argv)
nuclear@1 31 {
nuclear@1 32 glutInit(&argc, argv);
nuclear@5 33
nuclear@5 34 if(argc > 1) {
nuclear@5 35 level_file = argv[1];
nuclear@5 36 }
nuclear@5 37
nuclear@1 38 glutInitWindowSize(800, 600);
nuclear@1 39 glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_MULTISAMPLE);
nuclear@1 40 glutCreateWindow("prototype");
nuclear@1 41
nuclear@7 42 glutIdleFunc(idle);
nuclear@1 43 glutDisplayFunc(disp);
nuclear@1 44 glutReshapeFunc(reshape);
nuclear@1 45 glutKeyboardFunc(keyb);
nuclear@7 46 glutKeyboardUpFunc(key_release);
nuclear@1 47 glutMouseFunc(mouse);
nuclear@1 48 glutMotionFunc(motion);
nuclear@1 49
nuclear@1 50 glewInit();
nuclear@1 51
nuclear@5 52 if(!init()) {
nuclear@5 53 return 1;
nuclear@5 54 }
nuclear@5 55
nuclear@5 56 glutMainLoop();
nuclear@5 57 }
nuclear@5 58
nuclear@5 59 bool init()
nuclear@5 60 {
nuclear@1 61 glEnable(GL_LIGHTING);
nuclear@1 62 glEnable(GL_LIGHT0);
nuclear@1 63 float ldir[] = {-1, 1, 2, 0};
nuclear@1 64 glLightfv(GL_LIGHT0, GL_POSITION, ldir);
nuclear@1 65 glEnable(GL_NORMALIZE);
nuclear@1 66
nuclear@1 67 glEnable(GL_DEPTH_TEST);
nuclear@1 68 glEnable(GL_CULL_FACE);
nuclear@1 69 glEnable(GL_MULTISAMPLE);
nuclear@1 70
nuclear@5 71 add_data_path("data");
nuclear@5 72
nuclear@5 73 // load a tileset
nuclear@5 74 tileset = new TileSet;
nuclear@5 75 if(!tileset->load(datafile_path("default.tileset"))) {
nuclear@5 76 return false;
nuclear@5 77 }
nuclear@5 78 set_active_tileset(tileset);
nuclear@5 79
nuclear@1 80 level = new Level;
nuclear@7 81 printf("loading level: %s\n", level_file);
nuclear@5 82 if(!level->load(datafile_path(level_file))) {
nuclear@5 83 return false;
nuclear@1 84 }
nuclear@1 85
nuclear@7 86 cam.input_move(0, 0.5, 0);
nuclear@7 87
nuclear@5 88 return true;
nuclear@1 89 }
nuclear@1 90
nuclear@7 91 void idle()
nuclear@7 92 {
nuclear@7 93 glutPostRedisplay();
nuclear@7 94 }
nuclear@7 95
nuclear@1 96 void disp()
nuclear@1 97 {
nuclear@7 98 update(glutGet(GLUT_ELAPSED_TIME));
nuclear@7 99
nuclear@1 100 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@1 101
nuclear@1 102 glMatrixMode(GL_MODELVIEW);
nuclear@1 103 glLoadIdentity();
nuclear@7 104 cam.use_inverse();
nuclear@1 105
nuclear@1 106 level->draw();
nuclear@1 107
nuclear@1 108 glutSwapBuffers();
nuclear@1 109 assert(glGetError() == GL_NO_ERROR);
nuclear@7 110
nuclear@7 111 usleep(10000);
nuclear@7 112 }
nuclear@7 113
nuclear@7 114 void update(unsigned long msec)
nuclear@7 115 {
nuclear@7 116 static unsigned long last_upd;
nuclear@7 117
nuclear@7 118 if(last_upd == 0) {
nuclear@7 119 last_upd = msec;
nuclear@7 120 }
nuclear@7 121 float dt = (float)(msec - last_upd) / 1000.0;
nuclear@7 122
nuclear@7 123 float offs = 2.0 * dt;
nuclear@7 124 float dx = 0, dy = 0;
nuclear@7 125
nuclear@7 126 // handle key input
nuclear@7 127 if(keystate['w'] || keystate['W']) {
nuclear@7 128 dy -= offs;
nuclear@7 129 }
nuclear@7 130 if(keystate['s'] || keystate['S']) {
nuclear@7 131 dy += offs;
nuclear@7 132 }
nuclear@7 133 if(keystate['d'] || keystate['D']) {
nuclear@7 134 dx += offs;
nuclear@7 135 }
nuclear@7 136 if(keystate['a'] || keystate['A']) {
nuclear@7 137 dx -= offs;
nuclear@7 138 }
nuclear@7 139
nuclear@7 140 cam.input_move(dx, 0, dy);
nuclear@7 141
nuclear@7 142 last_upd = msec;
nuclear@1 143 }
nuclear@1 144
nuclear@1 145 void reshape(int x, int y)
nuclear@1 146 {
nuclear@1 147 glViewport(0, 0, x, y);
nuclear@1 148 glMatrixMode(GL_PROJECTION);
nuclear@1 149 glLoadIdentity();
nuclear@7 150 gluPerspective(45.0, (float)x / (float)y, 0.25, 100.0);
nuclear@1 151 }
nuclear@1 152
nuclear@1 153 void keyb(unsigned char key, int x, int y)
nuclear@1 154 {
nuclear@1 155 switch(key) {
nuclear@1 156 case 27:
nuclear@1 157 exit(0);
nuclear@1 158 }
nuclear@7 159
nuclear@7 160 keystate[key] = true;
nuclear@7 161 }
nuclear@7 162
nuclear@7 163 void key_release(unsigned char key, int x, int y)
nuclear@7 164 {
nuclear@7 165 keystate[key] = false;
nuclear@1 166 }
nuclear@1 167
nuclear@1 168 static int prev_x, prev_y;
nuclear@1 169 static bool bnstate[32];
nuclear@1 170
nuclear@1 171 void mouse(int bn, int state, int x, int y)
nuclear@1 172 {
nuclear@1 173 prev_x = x;
nuclear@1 174 prev_y = y;
nuclear@1 175 bnstate[bn - GLUT_LEFT_BUTTON] = state == GLUT_DOWN;
nuclear@1 176 }
nuclear@1 177
nuclear@1 178 void motion(int x, int y)
nuclear@1 179 {
nuclear@1 180 int dx = x - prev_x;
nuclear@1 181 int dy = y - prev_y;
nuclear@1 182 prev_x = x;
nuclear@1 183 prev_y = y;
nuclear@1 184
nuclear@1 185 if(bnstate[0]) {
nuclear@7 186 cam.input_rotate(dy * 0.01, dx * 0.01, 0);
nuclear@1 187 glutPostRedisplay();
nuclear@1 188 }
nuclear@1 189 if(bnstate[2]) {
nuclear@1 190 cam.input_zoom(dy * 0.1);
nuclear@1 191 glutPostRedisplay();
nuclear@1 192 }
nuclear@1 193 }