git.mutantstargoat.com Git - raydungeon/blob - src/game.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3 #include <GL/gl.h>
   4 #include <GL/glu.h>
   5 #include "game.h"
   6 #include "options.h"
   7
   8 int mouse_x, mouse_y, mouse_state[3];
   9 int mouse_grabbed;
  10 unsigned int modkeys;
  11 int win_width, win_height;
  12 float win_aspect;
  13 int fullscr;
  14
  15 long time_msec;
  16
  17 struct game_screen *cur_scr;
  18 char *start_scr_name;
  19
  20 /* available screens */
  21 extern struct game_screen scr_menu, scr_game, scr_map, scr_lvled;
  22 #define MAX_SCREENS     4
  23 static struct game_screen *screens[MAX_SCREENS];
  24 static int num_screens;
  25
  26
  27 int game_init(int argc, char **argv)
  28 {
  29         int i;
  30         char *env;
  31
  32         load_options(GAME_CFG_FILE);
  33         if(parse_options(argc, argv) == -1) {
  34                 return -1;
  35         }
  36         game_resize(opt.xres, opt.yres);
  37         game_vsync(opt.vsync);
  38         if(opt.fullscreen) {
  39                 game_fullscreen(1);
  40         }
  41
  42         /* initialize screens */
  43         screens[num_screens++] = &scr_menu;
  44         screens[num_screens++] = &scr_game;
  45         screens[num_screens++] = &scr_map;
  46         screens[num_screens++] = &scr_lvled;
  47
  48         if((env = getenv("START_SCREEN"))) {
  49                 start_scr_name = env;
  50         }
  51
  52         for(i=0; i<num_screens; i++) {
  53                 if(screens[i]->init() == -1) {
  54                         return -1;
  55                 }
  56         }
  57
  58         glClearColor(0.1, 0.1, 0.1, 1);
  59
  60         for(i=0; i<num_screens; i++) {
  61                 if(screens[i]->name && start_scr_name && strcmp(screens[i]->name, start_scr_name) == 0) {
  62                         game_chscr(screens[i]);
  63                         break;
  64                 }
  65         }
  66         if(!cur_scr) {
  67                 game_chscr(&scr_game);  /* TODO: scr_menu */
  68         }
  69         return 0;
  70 }
  71
  72 void game_shutdown(void)
  73 {
  74         int i;
  75
  76         save_options(GAME_CFG_FILE);
  77
  78         for(i=0; i<num_screens; i++) {
  79                 if(screens[i]->destroy) {
  80                         screens[i]->destroy();
  81                 }
  82         }
  83 }
  84
  85 void game_display(void)
  86 {
  87         time_msec = game_getmsec();
  88
  89         if(cur_scr) {
  90                 cur_scr->display();
  91         }
  92
  93         game_swap_buffers();
  94 }
  95
  96 void game_reshape(int x, int y)
  97 {
  98         win_width = x;
  99         win_height = y;
 100         win_aspect = (float)x / (float)y;
 101         glViewport(0, 0, x, y);
 102
 103         if(cur_scr && cur_scr->reshape) {
 104                 cur_scr->reshape(x, y);
 105         }
 106 }
 107
 108 void game_keyboard(int key, int press)
 109 {
 110         if(press) {
 111                 switch(key) {
 112                 case 27:
 113                         game_quit();
 114                         break;
 115
 116                 case '\n':
 117                 case '\r':
 118                         if(modkeys & GKEY_MOD_ALT) {
 119                 case GKEY_F11:
 120                                 game_fullscreen(-1);
 121                                 return;
 122                         }
 123                         break;
 124                 }
 125         }
 126
 127         if(cur_scr && cur_scr->keyboard) {
 128                 cur_scr->keyboard(key, press);
 129         }
 130 }
 131
 132 void game_mouse(int bn, int st, int x, int y)
 133 {
 134         mouse_x = x;
 135         mouse_y = y;
 136         if(bn < 3) {
 137                 mouse_state[bn] = st;
 138         }
 139
 140         if(cur_scr && cur_scr->mouse) {
 141                 cur_scr->mouse(bn, st, x, y);
 142         }
 143 }
 144
 145 void game_motion(int x, int y)
 146 {
 147         if(cur_scr && cur_scr->motion) {
 148                 cur_scr->motion(x, y);
 149         }
 150         mouse_x = x;
 151         mouse_y = y;
 152 }
 153
 154 void game_chscr(struct game_screen *scr)
 155 {
 156         struct game_screen *prev = cur_scr;
 157
 158         if(!scr) return;
 159
 160         if(scr->start && scr->start() == -1) {
 161                 return;
 162         }
 163         if(scr->reshape) {
 164                 scr->reshape(win_width, win_height);
 165         }
 166
 167         if(prev && prev->stop) {
 168                 prev->stop();
 169         }
 170         cur_scr = scr;
 171 }