862f479bec
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2110 a1c6a512-1295-4272-9138-f99709370657
409 lines
10 KiB
C
409 lines
10 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 1999 Mattis Wadman (nappe@sudac.org)
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*
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* Heavily modified for embedded use by Björn Stenberg (bjorn@haxx.se)
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#ifdef USE_GAMES
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#include <stdbool.h>
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#include "lcd.h"
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#include "button.h"
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#include "kernel.h"
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#include <string.h>
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#include "menu.h"
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#ifdef SIMULATOR
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#include <stdio.h>
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#endif
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#include "sprintf.h"
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#define TETRIS_TITLE "Tetris!"
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#define TETRIS_TITLE_FONT 1
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#define TETRIS_TITLE_XLOC 43
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#define TETRIS_TITLE_YLOC 15
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static const int start_x = 5;
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static const int start_y = 5;
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static const int max_x = 4 * 17;
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static const int max_y = 3 * 10;
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static const short level_speeds[10] = {1000,900,800,700,600,500,400,300,250,200};
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static const int blocks = 7;
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static const int block_frames[7] = {1,2,2,2,4,4,4};
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static int current_x, current_y, current_f, current_b;
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static int level, score;
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static int next_b, next_f;
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static short lines;
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static char virtual[LCD_WIDTH * LCD_HEIGHT];
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/*
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block_data is built up the following way
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first array index specifies the block number
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second array index specifies the rotation of the block
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third array index specifies:
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0: x-coordinates of pixels
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1: y-coordinates of pixels
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fourth array index specifies the coordinate of a pixel
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each block consists of four pixels whose relative coordinates are given
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with block_data
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*/
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static const char block_data[7][4][2][4] =
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{
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{
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{{0,1,0,1},{0,0,1,1}}
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},
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{
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{{0,1,1,2},{1,1,0,0}},
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{{0,0,1,1},{0,1,1,2}}
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},
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{
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{{0,1,1,2},{0,0,1,1}},
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{{1,1,0,0},{0,1,1,2}}
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},
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{
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{{1,1,1,1},{0,1,2,3}},
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{{0,1,2,3},{2,2,2,2}}
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},
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{
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{{1,1,1,2},{2,1,0,0}},
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{{0,1,2,2},{1,1,1,2}},
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{{0,1,1,1},{2,2,1,0}},
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{{0,0,1,2},{0,1,1,1}}
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},
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{
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{{0,1,1,1},{0,0,1,2}},
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{{0,1,2,2},{1,1,1,0}},
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{{1,1,1,2},{0,1,2,2}},
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{{0,0,1,2},{2,1,1,1}}
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},
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{
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{{1,0,1,2},{0,1,1,1}},
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{{2,1,1,1},{1,0,1,2}},
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{{1,0,1,2},{2,1,1,1}},
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{{0,1,1,1},{1,0,1,2}}
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}
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};
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int t_rand(int range)
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{
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return current_tick % range;
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}
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void draw_frame(int fstart_x,int fstop_x,int fstart_y,int fstop_y)
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{
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lcd_drawline(fstart_x, fstart_y, fstop_x, fstart_y);
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lcd_drawline(fstart_x, fstop_y, fstop_x, fstop_y);
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lcd_drawline(fstart_x, fstart_y, fstart_x, fstop_y);
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lcd_drawline(fstop_x, fstart_y, fstop_x, fstop_y);
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lcd_drawline(fstart_x - 1, fstart_y + 1, fstart_x - 1, fstop_y + 1);
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lcd_drawline(fstart_x - 1, fstop_y + 1, fstop_x - 1, fstop_y + 1);
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}
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void draw_block(int x, int y, int block, int frame, bool clear)
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{
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int i, a, b;
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for(i=0;i < 4;i++) {
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if (clear)
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{
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for (a = 0; a < 3; a++)
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for (b = 0; b < 4; b++)
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lcd_clearpixel(start_x + x + block_data[block][frame][1][i] * 4 - b,
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start_y + y + block_data[block][frame][0][i] * 3 + a);
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}
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else
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{
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for (a = 0; a < 3; a++)
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for (b = 0; b < 4; b++)
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lcd_drawpixel(start_x+x+block_data[block][frame][1][i] * 4 - b,
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start_y+y+block_data[block][frame][0][i] * 3 + a);
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}
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}
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}
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void to_virtual(void)
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{
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int i,a,b;
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for(i = 0; i < 4; i++)
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for (a = 0; a < 3; a++)
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for (b = 0; b < 4; b++)
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*(virtual +
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(current_y + block_data[current_b][current_f][0][i] * 3 + a) * max_x +
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current_x + block_data[current_b][current_f][1][i] * 4 - b) = current_b + 1;
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}
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bool block_touch (int x, int y)
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{
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int a,b;
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for (a = 0; a < 4; a++)
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for (b = 0; b < 3; b++)
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if (*(virtual + (y + b) * max_x + (x - a)) != 0)
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return true;
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return false;
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}
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bool gameover(void)
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{
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int i;
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int frame, block, y, x;
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x = current_x;
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y = current_y;
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block = current_b;
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frame = current_f;
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for(i = 0; i < 4; i++){
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/* Do we have blocks touching? */
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if(block_touch(x + block_data[block][frame][1][i] * 4, y + block_data[block][frame][0][i] * 3))
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{
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/* Are we at the top of the frame? */
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if(x + block_data[block][frame][1][i] * 4 >= max_x - 16)
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{
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/* Game over ;) */
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return true;
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}
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}
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}
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return false;
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}
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bool valid_position(int x, int y, int block, int frame)
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{
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int i;
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for(i=0;i < 4;i++)
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if ((y + block_data[block][frame][0][i] * 3 > max_y - 3) ||
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(x + block_data[block][frame][1][i] * 4 > max_x - 4) ||
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(y + block_data[block][frame][0][i] * 3 < 0) ||
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(x + block_data[block][frame][1][i] * 4 < 4) ||
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block_touch (x + block_data[block][frame][1][i] * 4, y + block_data[block][frame][0][i] * 3))
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return false;
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return true;
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}
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void from_virtual(void)
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{
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int x,y;
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for(y = 0; y < max_y; y++)
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for(x = 1; x < max_x - 1; x++)
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if(*(virtual + (y * max_x) + x) != 0)
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lcd_drawpixel(start_x + x, start_y + y);
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else
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lcd_clearpixel(start_x + x, start_y + y);
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}
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void move_block(int x,int y,int f)
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{
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int last_frame = current_f;
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if(f != 0)
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{
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current_f += f;
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if(current_f > block_frames[current_b]-1)
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current_f = 0;
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if(current_f < 0)
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current_f = block_frames[current_b]-1;
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}
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if(valid_position(current_x + x, current_y + y, current_b, current_f))
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{
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draw_block(current_x,current_y,current_b,last_frame,true);
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current_x += x;
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current_y += y;
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draw_block(current_x,current_y,current_b,current_f,false);
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lcd_update();
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}
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else
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current_f = last_frame;
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}
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void new_block(void)
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{
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current_b = next_b;
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current_f = next_f;
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current_x = max_x - 16;
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current_y = (int)12;
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next_b = t_rand(blocks);
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next_f = t_rand(block_frames[next_b]);
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lcd_drawline (max_x + 7, start_y - 1, max_x + 29, start_y - 1);
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lcd_drawline (max_x + 29, start_y, max_x + 29, start_y + 14);
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lcd_drawline (max_x + 29, start_y + 14, max_x + 7, start_y + 14);
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lcd_drawline (max_x + 7, start_y + 14, max_x + 7, start_y - 1);
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lcd_drawline (max_x + 6, start_y + 15, max_x + 6, start_y);
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lcd_drawline (max_x + 6, start_y + 15, max_x + 28, start_y + 15);
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draw_block(max_x + 9, start_y - 4, current_b, current_f, true);
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draw_block(max_x + 9, start_y - 4, next_b, next_f, false);
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if(!valid_position(current_x, current_y, current_b, current_f))
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{
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draw_block(current_x, current_y, current_b, current_f, false);
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lcd_update();
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}
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else
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draw_block(current_x, current_y, current_b, current_f, false);
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}
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int check_lines(void)
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{
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int x,y,i,j;
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bool line;
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int lines = 0;
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for(x = 0; x < max_x; x++)
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{
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line = true;
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for(y = 0; y < max_y; y++)
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{
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if(*(virtual + y * max_x + x) == 0)
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{
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line = false;
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break;
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}
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}
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if(line)
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{
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lines++;
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// move rows down
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for(i = x; i < max_x - 1; i++)
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for (j = 0; j < max_y; j++)
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*(virtual + j * max_x + i) = *(virtual + j * max_x + (i + 1));
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x--; // re-check this line
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}
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}
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return lines / 4;
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}
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void move_down(void)
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{
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int l;
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char s[25];
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if(!valid_position(current_x - 4, current_y, current_b, current_f))
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{
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to_virtual();
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l = check_lines();
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if(l)
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{
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lines += l;
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level = (int)lines/10;
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if(level > 9)
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level = 9;
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from_virtual();
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score += l*l;
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}
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snprintf (s, sizeof(s), "%d Rows - Level %d", lines, level);
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lcd_putsxy (2, 42, s, 0);
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new_block();
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move_block(0,0,0);
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}
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else
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move_block(-4,0,0);
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}
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void game_loop(void)
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{
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while(1)
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{
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int count = 0;
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while(count * 300 < level_speeds[level])
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{
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switch(button_get_w_tmo(HZ/10))
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{
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case BUTTON_OFF:
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return;
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case BUTTON_UP:
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case BUTTON_UP | BUTTON_REPEAT:
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move_block(0,-3,0);
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break;
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case BUTTON_DOWN:
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case BUTTON_DOWN | BUTTON_REPEAT:
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move_block(0,3,0);
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break;
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case BUTTON_RIGHT:
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case BUTTON_RIGHT | BUTTON_REPEAT:
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move_block(0,0,1);
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break;
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case BUTTON_LEFT:
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case BUTTON_LEFT | BUTTON_REPEAT:
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move_down();
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break;
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}
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count++;
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}
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if(gameover())
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{
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lcd_clearrect(0, 52, LCD_WIDTH, LCD_HEIGHT - 52);
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lcd_putsxy (2, 52, "You lose!", 0);
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lcd_update();
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sleep(HZ * 3);
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return;
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}
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move_down();
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}
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}
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void init_tetris(void)
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{
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memset(&virtual, 0, sizeof(virtual));
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current_x = 0;
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current_y = 0;
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current_f = 0;
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current_b = 0;
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level = 0;
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lines = 0;
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score = 0;
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next_b = 0;
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next_f = 0;
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}
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Menu tetris(void)
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{
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init_tetris();
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draw_frame(start_x, start_x + max_x - 1, start_y - 1, start_y + max_y);
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lcd_putsxy (2, 42, "0 Rows - Level 0", 0);
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lcd_update();
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next_b = t_rand(blocks);
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next_f = t_rand(block_frames[next_b]);
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new_block();
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game_loop();
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return MENU_OK;
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}
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#endif
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