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