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

   1 #include <string.h>
   2 #include "screen.h"
   3 #include "opt.h"
   4
   5 /* defined in their respective screen source files */
   6 struct game_screen main_menu_screen;
   7 struct game_screen game_screen;
   8
   9 static struct game_screen *screens[16];
  10 static int num_screens;
  11
  12 static struct game_screen *stack;
  13
  14 int init_screens(void)
  15 {
  16         int i = 0;
  17
  18         /* populate the screens */
  19         screens[i++] = &main_menu_screen;
  20         screens[i++] = &game_screen;
  21         num_screens = i;
  22
  23         stack = screens[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                         stack = screens[i];
  31                 }
  32         }
  33         return 0;
  34 }
  35
  36 void cleanup_screens(void)
  37 {
  38         int i;
  39
  40         for(i=0; i<num_screens; i++) {
  41                 screens[i]->cleanup();
  42         }
  43 }
  44
  45 void reshape_screens(int x, int y)
  46 {
  47         struct game_screen *s = stack;
  48         while(s) {
  49                 s->reshape(x, y);
  50                 s = s->next;
  51         }
  52 }
  53
  54 void push_screen(struct game_screen *s)
  55 {
  56         s->next = stack;
  57         stack = s;
  58         s->start();
  59 }
  60
  61 int pop_screen(void)
  62 {
  63         struct game_screen *s;
  64
  65         if(!stack->next) return -1;
  66         s = stack;
  67         stack = stack->next;
  68         s->stop();
  69         return 0;
  70 }