git.mutantstargoat.com Git - vrtris/blob - src/screen.c

   1 #include <string.h>
   2 #include "screen.h"
   3 #include "opt.h"
   4 #include "logger.h"
   5
   6 /* defined in their respective screen source files */
   7 struct game_screen main_menu_screen;
   8 struct game_screen game_screen;
   9
  10 static struct game_screen *screens[16];
  11 static int num_screens;
  12
  13 int init_screens(void)
  14 {
  15         int i = 0;
  16
  17         /* populate the screens */
  18         screens[i++] = &main_menu_screen;
  19         screens[i++] = &game_screen;
  20         num_screens = i;
  21
  22         screen = screens[0];
  23         screen->next = 0;
  24
  25         for(i=0; i<num_screens; i++) {
  26                 if(screens[i]->init() == -1) {
  27                         return -1;
  28                 }
  29                 if(opt.start_scr && strcmp(screens[i]->name, opt.start_scr) == 0) {
  30                         screen = screens[i];
  31                 }
  32         }
  33
  34         screen->start();
  35         return 0;
  36 }
  37
  38 void cleanup_screens(void)
  39 {
  40         int i;
  41
  42         for(i=0; i<num_screens; i++) {
  43                 screens[i]->cleanup();
  44         }
  45 }
  46
  47 void reshape_screens(int x, int y)
  48 {
  49         struct game_screen *s = screen;
  50         while(s) {
  51                 s->reshape(x, y);
  52                 s = s->next;
  53         }
  54 }
  55
  56 int push_screen(struct game_screen *s)
  57 {
  58         struct game_screen *it = screen;
  59         while(it && it != s) {
  60                 it = it->next;
  61         }
  62         if(it == s) {
  63                 error_log("attempting to push screen %s more than once!\n", s->name);
  64                 return -1;
  65         }
  66
  67         s->next = screen;
  68         screen = s;
  69         s->start();
  70         return 0;
  71 }
  72
  73 int pop_screen(void)
  74 {
  75         struct game_screen *s;
  76
  77         if(!screen->next) return -1;
  78         s = screen;
  79         screen = screen->next;
  80         s->stop();
  81         return 0;
  82 }