diff options
Diffstat (limited to 'menu.c')
| -rw-r--r-- | menu.c | 86 |
1 files changed, 86 insertions, 0 deletions
@@ -0,0 +1,86 @@ +#include "asset.h" +#include "input.h" +#include "menu.h" + +#ifdef DEBUG +#include "error.h" +#include "platform.h" +#endif + +void init_menu(Menu* menu, void* ptr) { + menu->el_count = 0; + menu->selected = 0; + menu->y = renderer_h / 2; + menu->h = 0; + menu->ptr = ptr; +} + +void menu_add( + Menu* menu, + const char* text, + Menu_Event on_select, + const BM_Font* font +) { + Menu_Item* it; + int i; + +#ifdef DEBUG + if (menu->el_count >= menu_max_elements) { + platform_err("Too many menu elements.\n"); + platform_abort(error_gameplay_error); + } +#endif + + it = &menu->els[menu->el_count++]; + it->on_select = on_select; + it->text_len = 0; + for (i = 0; text[i]; i++) { + it->text[i] = text[i]; + it->text_len++; + } it->text[i] = 0; + + menu->h = font->char_h * menu->el_count; + menu->y = renderer_h / 2 - (menu->h) / 2; +} + +void update_menu(Menu* menu) { + if (button_just_pressed(btn_dpad_down)) { + menu->selected++; + if (menu->selected >= menu->el_count) { + menu->selected = 0; + } + } + + if (button_just_pressed(btn_dpad_up)) { + menu->selected--; + if (menu->selected < 0) { + menu->selected = menu->el_count - 1; + } + } + + if ( + button_just_pressed(btn_jump) || + button_just_pressed(btn_shoot) + ) { + menu->els[menu->selected].on_select(menu); + } +} + +void render_menu(Menu* menu, const BM_Font* font) { + int i, x, y, cw, ch; + const Menu_Item* el; + + y = menu->y; + cw = font->char_w; + ch = font->char_h; + + for (i = 0; i < menu->el_count; i++) { + el = &menu->els[i]; + x = renderer_w / 2 - (cw * el->text_len) / 2; + rfont_text(font, x, y, el->text); + if (i == menu->selected) { + rfont_char(font, x - cw, y, '>'); + } + y += ch; + } +} |