84 lines
1.8 KiB
C
84 lines
1.8 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 "rebound.h"
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static uint8_t rbpos;
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void rebound_reflect (ball_t *b, int8_t in_x)
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{
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uint8_t tmpidx;
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tmpidx = ((in_x - rbpos) +1) % (REBOUND_SIZE +2);
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b->dir_x += rebound_reflection[tmpidx][0];
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b->dir_y += rebound_reflection[tmpidx][1];
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}
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uint8_t rebound_getpos ()
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{
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return (rbpos + (REBOUND_SIZE / 2));
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}
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void rebound_init()
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{
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rbpos = (NUM_ROWS / 2) - (REBOUND_SIZE / 2);
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rebound_draw();
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}
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void rebound_draw ()
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{
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uint8_t i;
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for (i=0;i<NUM_COLS;i++)
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{
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if (i >= rbpos && i < rbpos + REBOUND_SIZE)
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playfield_set (i, NUM_ROWS-1, rb); /* set rebound pixel */
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else
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playfield_set (i, NUM_ROWS-1, sp); /* space */
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}
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printf("rpos: %i\n", rbpos);
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}
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void rebound_tick(ball_t *ball)
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{
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if (ball != NULL)
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{
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rbpos = (uint8_t) abs(ball->x / 256);
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if (rbpos < 0)
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rbpos = 0;
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if (rbpos > (NUM_COLS - REBOUND_SIZE))
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rbpos = NUM_COLS - REBOUND_SIZE;
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rebound_draw();
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}
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else
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{
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/* directions are inverted (JOYISLEFT means RIGHT) */
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if (JOYISRIGHT && rbpos)
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{
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rbpos--;
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rebound_draw();
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}
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if (JOYISLEFT && rbpos < (NUM_COLS - (REBOUND_SIZE)))
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{
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rbpos++;
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rebound_draw();
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}
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}
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}
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