092d313019
This merges in all such remaining changes from the Linux port of the NetBSD games, except in hunt (where substantial changes from OpenBSD need to be looked at). Some such changes were previously covered in PRs bin/6041, bin/6146, bin/6148, bin/6150, bin/6151, bin/6580, bin/6660, bin/7993, bin/7994, bin/8039, bin/8057 and bin/8093.
114 lines
3.7 KiB
C
114 lines
3.7 KiB
C
/* $NetBSD: shapes.c,v 1.4 1999/09/08 21:18:01 jsm Exp $ */
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek and Darren F. Provine.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)shapes.c 8.1 (Berkeley) 5/31/93
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*/
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/*
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* Tetris shapes and related routines.
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*
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* Note that the first 7 are `well known'.
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*/
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#include <sys/cdefs.h>
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#include "tetris.h"
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#define TL -B_COLS-1 /* top left */
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#define TC -B_COLS /* top center */
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#define TR -B_COLS+1 /* top right */
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#define ML -1 /* middle left */
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#define MR 1 /* middle right */
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#define BL B_COLS-1 /* bottom left */
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#define BC B_COLS /* bottom center */
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#define BR B_COLS+1 /* bottom right */
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const struct shape shapes[] = {
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/* 0*/ { 7, { TL, TC, MR, } },
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/* 1*/ { 8, { TC, TR, ML, } },
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/* 2*/ { 9, { ML, MR, BC, } },
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/* 3*/ { 3, { TL, TC, ML, } },
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/* 4*/ { 12, { ML, BL, MR, } },
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/* 5*/ { 15, { ML, BR, MR, } },
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/* 6*/ { 18, { ML, MR, 2 } }, /* sticks out */
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/* 7*/ { 0, { TC, ML, BL, } },
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/* 8*/ { 1, { TC, MR, BR, } },
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/* 9*/ { 10, { TC, MR, BC, } },
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/*10*/ { 11, { TC, ML, MR, } },
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/*11*/ { 2, { TC, ML, BC, } },
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/*12*/ { 13, { TC, BC, BR, } },
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/*13*/ { 14, { TR, ML, MR, } },
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/*14*/ { 4, { TL, TC, BC, } },
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/*15*/ { 16, { TR, TC, BC, } },
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/*16*/ { 17, { TL, MR, ML, } },
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/*17*/ { 5, { TC, BC, BL, } },
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/*18*/ { 6, { TC, BC, 2*B_COLS } } /* sticks out */
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};
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/*
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* Return true iff the given shape fits in the given position,
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* taking the current board into account.
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*/
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int
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fits_in(shape, pos)
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const struct shape *shape;
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register int pos;
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{
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register int *o = shape->off;
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if (board[pos] || board[pos + *o++] || board[pos + *o++] ||
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board[pos + *o])
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return 0;
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return 1;
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}
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/*
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* Write the given shape into the current board, turning it on
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* if `onoff' is 1, and off if `onoff' is 0.
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*/
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void
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place(shape, pos, onoff)
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const struct shape *shape;
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register int pos, onoff;
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{
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register int *o = shape->off;
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board[pos] = onoff;
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board[pos + *o++] = onoff;
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board[pos + *o++] = onoff;
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board[pos + *o] = onoff;
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}
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