302 lines
7.2 KiB
C
302 lines
7.2 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 "types.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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#ifdef SIMULATOR
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#include <stdio.h>
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#endif
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int start_x = 1;
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int start_y = 1;
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int max_x = 14;
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int max_y = 24;
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int current_x = 0;
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int current_y = 0;
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int current_f = 0;
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int current_b = 0;
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int level = 0;
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short lines = 0;
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int score = 0;
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int next_b = 0;
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int next_f = 0;
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char virtual[LCD_WIDTH*LCD_HEIGHT];
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short level_speeds[10] = {1000,900,800,700,600,500,400,300,250,200};
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int blocks = 7;
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int block_frames[7] = {1,2,2,2,4,4,4};
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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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int 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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/* not even pseudo random :) */
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int rand(int range)
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{
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static int count;
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count++;
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return count % 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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int i;
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for (i=0; fstart_x+i-1 < fstop_x; i++)
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{
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lcd_drawpixel(fstart_x+i,fstart_y);
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lcd_drawpixel(fstart_x+i,fstop_y);
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}
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for (i=1; fstart_y+i < fstop_y; i++)
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{
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lcd_drawpixel(fstart_x,fstart_y+i);
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lcd_drawpixel(fstop_x,fstart_y+i);
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}
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lcd_drawpixel(fstart_x,fstart_y);
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lcd_drawpixel(fstop_x,fstart_y);
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lcd_drawpixel(fstart_x,fstop_y);
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lcd_drawpixel(fstop_x,fstop_y);
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}
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void draw_block(int x,int y,int block,int frame,int clear)
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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 ( (clear ? 0 : block+1) )
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lcd_drawpixel(start_x+x+block_data[block][frame][0][i],
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start_y+y+block_data[block][frame][1][i]);
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else
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lcd_clearpixel(start_x+x+block_data[block][frame][0][i],
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start_y+y+block_data[block][frame][1][i]);
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}
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void to_virtual()
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{
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int i;
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for(i=0;i < 4;i++)
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*(virtual+
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((current_y+block_data[current_b][current_f][1][i])*max_x)+
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(current_x+block_data[current_b][current_f][0][i])) = current_b+1;
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}
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int 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( (*(virtual+((y+block_data[block][frame][1][i])*max_x)+x+
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block_data[block][frame][0][i]) != 0) ||
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(x+block_data[block][frame][0][i] < 0) ||
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(x+block_data[block][frame][0][i] > max_x-1) ||
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(y+block_data[block][frame][1][i] < 0) ||
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(y+block_data[block][frame][1][i] > max_y-1))
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return FALSE;
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return TRUE;
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}
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void from_virtual()
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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=0;x < max_x;x++)
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if(*(virtual+(y*max_x)+x))
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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()
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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 = (int)((max_x)/2)-1;
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current_y = 0;
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next_b = rand(blocks);
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next_f = rand(block_frames[next_b]);
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draw_block(max_x+2,start_y-1,current_b,current_f,TRUE);
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draw_block(max_x+2,start_y-1,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()
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{
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int x,y,line,i;
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int lines = 0;
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for(y=0;y < max_y;y++)
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{
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line = TRUE;
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for(x=0;x < max_x;x++)
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if(virtual[y*max_x+x] == 0)
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line = FALSE;
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if(line)
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{
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lines++;
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for(i=y;i > 1;i--)
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for (x=0;x<max_x;x++)
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virtual[i*max_x] = virtual[((i-1)*max_x)];
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for (x=0;x<max_x;x++)
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virtual[max_x] = 0;
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}
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}
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return lines;
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}
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void move_down()
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{
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int l;
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if(!valid_position(current_x,current_y+1,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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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(0,1,0);
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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 b=0;
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int count = 0;
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/* while(count*20 < level_speeds[level]) */
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{
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b = button_get();
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if ( b & BUTTON_OFF )
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return; /* get out of here */
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if ( b & BUTTON_LEFT ) {
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move_block(-1,0,0);
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}
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if ( b & BUTTON_RIGHT ) {
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move_block(1,0,0);
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}
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if ( b & BUTTON_UP ) {
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move_block(0,0,1);
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}
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if ( b & BUTTON_DOWN ) {
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move_down();
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}
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count++;
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sleep(1);
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}
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move_down();
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}
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}
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void tetris(void)
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{
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draw_frame(start_x-1,start_x+max_x,start_y-1,start_y+max_y);
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lcd_puts(10, 32, "Tetris!", 2);
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lcd_update();
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next_b = rand(blocks);
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next_f = rand(block_frames[next_b]);
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new_block();
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game_loop();
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}
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