109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*
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* Author & Copyright (C) 2010: Soeren Heisrath (forename@surename.org)
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*
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*/
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#include "level.h"
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static uint16_t maxscore;
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/* internal functions */
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/* real level definition */
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static game_field_t level_field (uint8_t in_x, uint8_t in_y, uint8_t in_lvl)
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{
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switch (in_lvl)
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{
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case 0:
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/* space for the lower half of the level */
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if (in_y > (NUM_ROWS / 3))
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return sp;
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return b1; /* b1-blocks for the rest */
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case 1:
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/* space for the lower half of the level */
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if (in_y > (NUM_ROWS / 2))
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return sp;
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/* type 2 bricks for 1/4th of the field */
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if (in_y <= (NUM_ROWS / 4))
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return b2;
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/* fill the rest with type 1 */
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return b1;
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break;
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case 3:
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/* add a row of solid bricks right in the middle of the field */
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if (in_y == (NUM_ROWS / 2) &&
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(in_x > (NUM_COLS / 4)) && (in_x < (NUM_COLS - (NUM_COLS / 4))))
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return bs;
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/* intentional fallthrough: the rest of level 3 is like level 2 */
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case 2:
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/* space for the lower third of the level */
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if (in_y > (NUM_ROWS / 3))
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return sp;
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/* type 3 bricks for 1/8th of the field */
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if (in_y <= (NUM_ROWS / 8))
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return b3;
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/* type 2 bricks for 1/4th of the field */
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if (in_y <= (NUM_ROWS / 4))
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return b2;
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/* fill the rest with type 1 */
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return b1;
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default: /* random level generation */
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/* space for the lower half of the level */
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if (in_y > (NUM_ROWS / 2))
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return sp;
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return random8() & 0x03; /* fill field with random bricks (and spaces) */
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break;
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}
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}
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/* interface functions */
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void level_init (uint8_t in_levelnum)
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{
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uint8_t x,y;
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game_field_t tmp;
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maxscore = 0;
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for (x=0;x<NUM_COLS;x++)
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{
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for (y=0;y<NUM_ROWS;y++)
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{
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tmp = level_field (x, y, in_levelnum);
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playfield_set (x,y, tmp);
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if (tmp <= b3)
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maxscore += tmp;
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}
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}
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maxscore += score_get();
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}
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uint16_t level_getscorediff ()
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{
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return maxscore - score_get();
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}
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