mirror of
https://github.com/eddyem/stm32samples.git
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102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
/*
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* This file is part of the TETRIS project.
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* Copyright 2021 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "buttons.h"
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#include "fonts.h"
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#include "menu.h"
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#include "screen.h"
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#include "usb.h"
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#include "proto.h"
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// colors
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#define MENUBGCOLOR (0)
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#define MENUFGCOLOR (0b1100)
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// menu item @ screen center
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#define midNo ((MENU_ITEMS - 1) / 2)
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// Y coordinate of screen center
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#define midY (SCREEN_HH - 1)
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static const char* items[] = {
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[MENU_SLEEP] = " Sleep ",
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[MENU_BALLS] = " Balls ",
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[MENU_SNAKE] = " Snake ",
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[MENU_TETRIS] = " Tetris "
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};
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static menuitem curitem = MENU_SLEEP;
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// show menu
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static void _menu(){
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choose_font(FONT14);
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setBGcolor(COLOR_BLACK);
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ClearScreen();
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int charH = curfont->height, charB = curfont->baseline;
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int curI = midNo;
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if(MENU_ITEMS*charH > SCREEN_HEIGHT){
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curI = curitem; charB -= charH/2;
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}
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for(int i = 0; i < MENU_ITEMS; ++i){
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if(i == curitem){
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setBGcolor(MENUFGCOLOR);
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setFGcolor(MENUBGCOLOR);
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}else{
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setBGcolor(MENUBGCOLOR);
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setFGcolor(MENUFGCOLOR);
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}
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CenterStringAt(midY + (i-curI)*charH - charB, items[i]);
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}
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}
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// initial menu
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void show_menu(){
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curitem = MENU_SLEEP;
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ScreenON();
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_menu();
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}
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// process menu items and return its status
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menuitem menu_activated(){
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keyevent evt;
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menuitem olditem = curitem;
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if(keystate(KEY_U, &evt) && evt == EVT_PRESS){ // dont' react @ HOLD events!
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if(curitem) --curitem;
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}
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if(keystate(KEY_D, &evt) && evt == EVT_PRESS){
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if(curitem < (MENU_ITEMS-1)) ++curitem;
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}
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if(curitem != olditem) _menu();
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if(keystate(KEY_S, &evt) && evt == EVT_HOLD){ // select by hold event
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return curitem;
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}
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clear_events(); // clear all other events
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return MENU_NONE;
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}
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// show "GAME OVER" screen
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void show_gameover(){
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setBGcolor(COLOR_BLACK);
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setFGcolor(COLOR_RED);
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ClearScreen();
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choose_font(FONT14);
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CenterStringAt(SCREEN_HEIGHT/2 - curfont->baseline - 1, "Game Over!");
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setFGcolor(COLOR_YELLOW);
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uint8_t l = PutStringAt(0, SCREEN_HEIGHT - curfont->baseline, "Score: ");
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PutStringAt(l, SCREEN_HEIGHT - curfont->baseline, u2str(score));
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}
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