mirror of https://github.com/LemonBoy/grape.git
101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
#include <nds.h>
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#include <stdio.h>
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#include "emu.h"
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typedef struct entry_t {
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const char *label;
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const int opts_no;
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const char *opts[10];
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int (*cb)(int);
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} entry_t;
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typedef struct page_t {
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const char *title;
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const int entries_no;
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const entry_t *entries;
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} page_t;
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#define OPT(n) int opt_##n (int sel) { emu_##n = sel; return 1; }
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OPT(vsync);
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OPT(input);
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int opt_screen (int sel)
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{
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(sel) ? lcdMainOnBottom() : lcdMainOnTop();
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return 1;
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}
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const static struct page_t paused_pg = {
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"Paused", 7, (const entry_t []){
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{ "Vsync", 2, { "No", "Yes" }, opt_vsync },
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{ "Scale", 2, { "No", "Yes" }, video_set_scale },
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{ "Screen", 2, { "Top", "Bottom" }, opt_screen },
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{ "Map keys to", 2, { "joystick", "keyboard" }, opt_input },
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{ "Save state", 9, { "1", "2", "3", "4", "5", "6", "7", "8", "9" }, state_save },
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{ "Load state", 9, { "1", "2", "3", "4", "5", "6", "7", "8", "9" }, state_load },
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{ "Exit", 0, { }, exit },
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}
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};
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static int paused_pg_opt[6] = { 1, 0, 0, 0, 0, 0 };
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void menu_print_page (const page_t *page, int *opts)
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{
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int i;
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int cur;
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int keys;
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cur = 0;
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while (1) {
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consoleClear();
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iprintf("-- %s\n\n", page->title);
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const entry_t *sel_entry = &page->entries[cur];
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for (i = 0; i < page->entries_no; i++) {
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const entry_t *entry = &page->entries[i];
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iprintf("%c %s %s\n", (i == cur) ? '>' : ' ', entry->label,
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(entry->opts_no) ? entry->opts[opts[i]] : "");
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}
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scanKeys();
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keys = keysDownRepeat();
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if (keys&KEY_UP) {
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cur--;
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if (cur < 0)
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cur = page->entries_no - 1;
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}
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if (keys&KEY_DOWN) {
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cur++;
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if (cur == page->entries_no)
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cur = 0;
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}
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if (sel_entry->opts_no) {
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if (keys&KEY_LEFT && opts[cur] > 0) {
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opts[cur]--;
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if (sel_entry->cb) sel_entry->cb(opts[cur]);
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}
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if (keys&KEY_RIGHT && opts[cur] < sel_entry->opts_no - 1) {
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opts[cur]++;
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if (sel_entry->cb) sel_entry->cb(opts[cur]);
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}
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}
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if (keys&KEY_A) {
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if (sel_entry->cb)
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sel_entry->cb(opts[cur]); // TODO : Handle errors
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return;
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}
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// Use keysDown to avoid bouncing
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if (keysDown()&KEY_START)
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return;
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swiWaitForVBlank();
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}
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}
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void pause_menu () { menu_print_page(&paused_pg, (int *)&paused_pg_opt); }
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