WebSVN – HelenOS – Diff – /branches/arm/uspace/app/tetris/tetris.h


/*  $OpenBSD: tetris.h,v 1.9 2003/06/03 03:01:41 millert Exp $  */
/*  $NetBSD: tetris.h,v 1.2 1995/04/22 07:42:48 cgd Exp $   */
 
/*-
 * Copyright (c) 1992, 1993
 *  The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Chris Torek and Darren F. Provine.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *  @(#)tetris.h    8.1 (Berkeley) 5/31/93
 */
 
/** @addtogroup tetris
 * @{
 */
/** @file
 */
 
/*
 * Definitions for Tetris.
 */
 
/*
 * The display (`board') is composed of 23 rows of 12 columns of characters
 * (numbered 0..22 and 0..11), stored in a single array for convenience.
 * Columns 1 to 10 of rows 1 to 20 are the actual playing area, where
 * shapes appear.  Columns 0 and 11 are always occupied, as are all
 * columns of rows 21 and 22.  Rows 0 and 22 exist as boundary areas
 * so that regions `outside' the visible area can be examined without
 * worrying about addressing problems.
 */
 
/* The board */
#define B_COLS  12
#define B_ROWS  23
#define B_SIZE  (B_ROWS * B_COLS)
 
typedef uint32_t cell;
 
extern cell board[B_SIZE];  /* 1 => occupied, 0 => empty */
 
/* The displayed area (rows) */
#define D_FIRST  1
#define D_LAST   22
 
/* The active area (rows) */
#define A_FIRST  1
#define A_LAST   21
 
/*
 * Minimum display size.
 */
#define MINROWS  23
#define MINCOLS  40
 
/* Current screen size */
extern int Rows;
extern int Cols;
 
/*
 * Translations from board coordinates to display coordinates.
 * As with board coordinates, display coordiates are zero origin.
 */
#define RTOD(x)  ((x) - 1)
#define CTOD(x)  ((x) * 2 + (((Cols - 2 * B_COLS) >> 1) - 1))
 
/*
 * A `shape' is the fundamental thing that makes up the game.  There
 * are 7 basic shapes, each consisting of four `blots':
 *
 *      X.X       X.X           X.X
 *        X.X   X.X     X.X.X   X.X     X.X.X   X.X.X   X.X.X.X
 *                        X             X           X
 *
 *          0     1       2       3       4       5       6
 *
 * Except for 3 and 6, the center of each shape is one of the blots.
 * This blot is designated (0, 0).  The other three blots can then be
 * described as offsets from the center.  Shape 3 is the same under
 * rotation, so its center is effectively irrelevant; it has been chosen
 * so that it `sticks out' upward and leftward.  Except for shape 6,
 * all the blots are contained in a box going from (-1, -1) to (+1, +1);
 * shape 6's center `wobbles' as it rotates, so that while it `sticks out'
 * rightward, its rotation---a vertical line---`sticks out' downward.
 * The containment box has to include the offset (2, 0), making the overall
 * containment box range from offset (-1, -1) to (+2, +1).  (This is why
 * there is only one row above, but two rows below, the display area.)
 *
 * The game works by choosing one of these shapes at random and putting
 * its center at the middle of the first display row (row 1, column 5).
 * The shape is moved steadily downward until it collides with something:
 * either  another shape, or the bottom of the board.  When the shape can
 * no longer be moved downwards, it is merged into the current board.
 * At this time, any completely filled rows are elided, and blots above
 * these rows move down to make more room.  A new random shape is again
 * introduced at the top of the board, and the whole process repeats.
 * The game ends when the new shape will not fit at (1, 5).
 *
 * While the shapes are falling, the user can rotate them counterclockwise
 * 90 degrees (in addition to moving them left or right), provided that the
 * rotation puts the blots in empty spaces.  The table of shapes is set up
 * so that each shape contains the index of the new shape obtained by
 * rotating the current shape.  Due to symmetry, each shape has exactly
 * 1, 2, or 4 rotations total; the first 7 entries in the table represent
 * the primary shapes, and the remaining 12 represent their various
 * rotated forms.
 */
struct shape {
    int rot;     /* index of rotated version of this shape */
    int rotc;    /* -- " -- in classic version  */
    int off[3];  /* offsets to other blots if center is at (0,0) */
    uint32_t color;
};
 
extern const struct shape shapes[];
 
extern const struct shape *curshape;
extern const struct shape *nextshape;
 
/*
 * Shapes fall at a rate faster than once per second.
 *
 * The initial rate is determined by dividing 1 million microseconds
 * by the game `level'.  (This is at most 1 million, or one second.)
 * Each time the fall-rate is used, it is decreased a little bit,
 * depending on its current value, via the `faster' macro below.
 * The value eventually reaches a limit, and things stop going faster,
 * but by then the game is utterly impossible.
 */
extern long fallrate;  /* less than 1 million; smaller => faster */
 
#define faster()  (fallrate -= fallrate / 3000)
 
/*
 * Game level must be between 1 and 9.  This controls the initial fall rate
 * and affects scoring.
 */
#define MINLEVEL  1
#define MAXLEVEL  9
 
/*
 * Scoring is as follows:
 *
 * When the shape comes to rest, and is integrated into the board,
 * we score one point.  If the shape is high up (at a low-numbered row),
 * and the user hits the space bar, the shape plummets all the way down,
 * and we score a point for each row it falls (plus one more as soon as
 * we find that it is at rest and integrate it---until then, it can
 * still be moved or rotated).
 *
 * If previewing has been turned on, the score is multiplied by PRE_PENALTY.
 */
#define PRE_PENALTY  0.75
 
extern int score;  /* The obvious thing */
 
extern char key_msg[100];
extern int showpreview;
extern int classic;
 
extern int fits_in(const struct shape *, int);
extern void place(const struct shape *, int, int);
extern void stop(char *);
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/branches/arm/uspace/app/tetris/tetris.h – Rev 4515 → 4647

Rev 4515		Rev 4647
1	/* $OpenBSD: tetris.h,v 1.9 2003/06/03 03:01:41 millert Exp $ */	1	/* $OpenBSD: tetris.h,v 1.9 2003/06/03 03:01:41 millert Exp $ */
2	/* $NetBSD: tetris.h,v 1.2 1995/04/22 07:42:48 cgd Exp $ */	2	/* $NetBSD: tetris.h,v 1.2 1995/04/22 07:42:48 cgd Exp $ */
3		3
4	/*-	4	/*-
5	* Copyright (c) 1992, 1993	5	* Copyright (c) 1992, 1993
6	* The Regents of the University of California. All rights reserved.	6	* The Regents of the University of California. All rights reserved.
7	*	7	*
8	* This code is derived from software contributed to Berkeley by	8	* This code is derived from software contributed to Berkeley by
9	* Chris Torek and Darren F. Provine.	9	* Chris Torek and Darren F. Provine.
10	*	10	*
11	* Redistribution and use in source and binary forms, with or without	11	* Redistribution and use in source and binary forms, with or without
12	* modification, are permitted provided that the following conditions	12	* modification, are permitted provided that the following conditions
13	* are met:	13	* are met:
14	* 1. Redistributions of source code must retain the above copyright	14	* 1. Redistributions of source code must retain the above copyright
15	* notice, this list of conditions and the following disclaimer.	15	* notice, this list of conditions and the following disclaimer.
16	* 2. Redistributions in binary form must reproduce the above copyright	16	* 2. Redistributions in binary form must reproduce the above copyright
17	* notice, this list of conditions and the following disclaimer in the	17	* notice, this list of conditions and the following disclaimer in the
18	* documentation and/or other materials provided with the distribution.	18	* documentation and/or other materials provided with the distribution.
19	* 3. Neither the name of the University nor the names of its contributors	19	* 3. Neither the name of the University nor the names of its contributors
20	* may be used to endorse or promote products derived from this software	20	* may be used to endorse or promote products derived from this software
21	* without specific prior written permission.	21	* without specific prior written permission.
22	*	22	*
23	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND	23	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE	24	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE	25	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE	26	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL	27	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS	28	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)	29	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT	30	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY	31	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF	32	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33	* SUCH DAMAGE.	33	* SUCH DAMAGE.
34	*	34	*
35	* @(#)tetris.h 8.1 (Berkeley) 5/31/93	35	* @(#)tetris.h 8.1 (Berkeley) 5/31/93
36	*/	36	*/
37		37
38	/** @addtogroup tetris	38	/** @addtogroup tetris
39	* @{	39	* @{
40	*/	40	*/
41	/** @file	41	/** @file
42	*/	42	*/
43		43
44	/*	44	/*
45	* Definitions for Tetris.	45	* Definitions for Tetris.
46	*/	46	*/
47		47
48	/*	48	/*
49	* The display (`board') is composed of 23 rows of 12 columns of characters	49	* The display (`board') is composed of 23 rows of 12 columns of characters
50	* (numbered 0..22 and 0..11), stored in a single array for convenience.	50	* (numbered 0..22 and 0..11), stored in a single array for convenience.
51	* Columns 1 to 10 of rows 1 to 20 are the actual playing area, where	51	* Columns 1 to 10 of rows 1 to 20 are the actual playing area, where
52	* shapes appear. Columns 0 and 11 are always occupied, as are all	52	* shapes appear. Columns 0 and 11 are always occupied, as are all
53	* columns of rows 21 and 22. Rows 0 and 22 exist as boundary areas	53	* columns of rows 21 and 22. Rows 0 and 22 exist as boundary areas
54	* so that regions `outside' the visible area can be examined without	54	* so that regions `outside' the visible area can be examined without
55	* worrying about addressing problems.	55	* worrying about addressing problems.
56	*/	56	*/
57		57
58	/* The board */	58	/* The board */
59	#define B_COLS 12	59	#define B_COLS 12
60	#define B_ROWS 23	60	#define B_ROWS 23
61	#define B_SIZE (B_ROWS * B_COLS)	61	#define B_SIZE (B_ROWS * B_COLS)
62		62
63	typedef uint32_t cell;	63	typedef uint32_t cell;
64		64
65	extern cell board[B_SIZE]; /* 1 => occupied, 0 => empty */	65	extern cell board[B_SIZE]; /* 1 => occupied, 0 => empty */
66		66
67	/* The displayed area (rows) */	67	/* The displayed area (rows) */
68	#define D_FIRST 1	68	#define D_FIRST 1
69	#define D_LAST 22	69	#define D_LAST 22
70		70
71	/* The active area (rows) */	71	/* The active area (rows) */
72	#define A_FIRST 1	72	#define A_FIRST 1
73	#define A_LAST 21	73	#define A_LAST 21
74		74
75	/*	75	/*
76	* Minimum display size.	76	* Minimum display size.
77	*/	77	*/
78	#define MINROWS 23	78	#define MINROWS 23
79	#define MINCOLS 40	79	#define MINCOLS 40
80		80
81	/* Current screen size */	81	/* Current screen size */
82	extern int Rows;	82	extern int Rows;
83	extern int Cols;	83	extern int Cols;
84		84
85	/*	85	/*
86	* Translations from board coordinates to display coordinates.	86	* Translations from board coordinates to display coordinates.
87	* As with board coordinates, display coordiates are zero origin.	87	* As with board coordinates, display coordiates are zero origin.
88	*/	88	*/
89	#define RTOD(x) ((x) - 1)	89	#define RTOD(x) ((x) - 1)
90	#define CTOD(x) ((x) * 2 + (((Cols - 2 * B_COLS) >> 1) - 1))	90	#define CTOD(x) ((x) * 2 + (((Cols - 2 * B_COLS) >> 1) - 1))
91		91
92	/*	92	/*
93	* A `shape' is the fundamental thing that makes up the game. There	93	* A `shape' is the fundamental thing that makes up the game. There
94	* are 7 basic shapes, each consisting of four `blots':	94	* are 7 basic shapes, each consisting of four `blots':
95	*	95	*
96	* X.X X.X X.X	96	* X.X X.X X.X
97	* X.X X.X X.X.X X.X X.X.X X.X.X X.X.X.X	97	* X.X X.X X.X.X X.X X.X.X X.X.X X.X.X.X
98	* X X X	98	* X X X
99	*	99	*
100	* 0 1 2 3 4 5 6	100	* 0 1 2 3 4 5 6
101	*	101	*
102	* Except for 3 and 6, the center of each shape is one of the blots.	102	* Except for 3 and 6, the center of each shape is one of the blots.
103	* This blot is designated (0, 0). The other three blots can then be	103	* This blot is designated (0, 0). The other three blots can then be
104	* described as offsets from the center. Shape 3 is the same under	104	* described as offsets from the center. Shape 3 is the same under
105	* rotation, so its center is effectively irrelevant; it has been chosen	105	* rotation, so its center is effectively irrelevant; it has been chosen
106	* so that it `sticks out' upward and leftward. Except for shape 6,	106	* so that it `sticks out' upward and leftward. Except for shape 6,
107	* all the blots are contained in a box going from (-1, -1) to (+1, +1);	107	* all the blots are contained in a box going from (-1, -1) to (+1, +1);
108	* shape 6's center `wobbles' as it rotates, so that while it `sticks out'	108	* shape 6's center `wobbles' as it rotates, so that while it `sticks out'
109	* rightward, its rotation---a vertical line---`sticks out' downward.	109	* rightward, its rotation---a vertical line---`sticks out' downward.
110	* The containment box has to include the offset (2, 0), making the overall	110	* The containment box has to include the offset (2, 0), making the overall
111	* containment box range from offset (-1, -1) to (+2, +1). (This is why	111	* containment box range from offset (-1, -1) to (+2, +1). (This is why
112	* there is only one row above, but two rows below, the display area.)	112	* there is only one row above, but two rows below, the display area.)
113	*	113	*
114	* The game works by choosing one of these shapes at random and putting	114	* The game works by choosing one of these shapes at random and putting
115	* its center at the middle of the first display row (row 1, column 5).	115	* its center at the middle of the first display row (row 1, column 5).
116	* The shape is moved steadily downward until it collides with something:	116	* The shape is moved steadily downward until it collides with something:
117	* either another shape, or the bottom of the board. When the shape can	117	* either another shape, or the bottom of the board. When the shape can
118	* no longer be moved downwards, it is merged into the current board.	118	* no longer be moved downwards, it is merged into the current board.
119	* At this time, any completely filled rows are elided, and blots above	119	* At this time, any completely filled rows are elided, and blots above
120	* these rows move down to make more room. A new random shape is again	120	* these rows move down to make more room. A new random shape is again
121	* introduced at the top of the board, and the whole process repeats.	121	* introduced at the top of the board, and the whole process repeats.
122	* The game ends when the new shape will not fit at (1, 5).	122	* The game ends when the new shape will not fit at (1, 5).
123	*	123	*
124	* While the shapes are falling, the user can rotate them counterclockwise	124	* While the shapes are falling, the user can rotate them counterclockwise
125	* 90 degrees (in addition to moving them left or right), provided that the	125	* 90 degrees (in addition to moving them left or right), provided that the
126	* rotation puts the blots in empty spaces. The table of shapes is set up	126	* rotation puts the blots in empty spaces. The table of shapes is set up
127	* so that each shape contains the index of the new shape obtained by	127	* so that each shape contains the index of the new shape obtained by
128	* rotating the current shape. Due to symmetry, each shape has exactly	128	* rotating the current shape. Due to symmetry, each shape has exactly
129	* 1, 2, or 4 rotations total; the first 7 entries in the table represent	129	* 1, 2, or 4 rotations total; the first 7 entries in the table represent
130	* the primary shapes, and the remaining 12 represent their various	130	* the primary shapes, and the remaining 12 represent their various
131	* rotated forms.	131	* rotated forms.
132	*/	132	*/
133	struct shape {	133	struct shape {
134	int rot; /* index of rotated version of this shape */	134	int rot; /* index of rotated version of this shape */
135	int rotc; /* -- " -- in classic version */	135	int rotc; /* -- " -- in classic version */
136	int off[3]; /* offsets to other blots if center is at (0,0) */	136	int off[3]; /* offsets to other blots if center is at (0,0) */
137	uint32_t color;	137	uint32_t color;
138	};	138	};
139		139
140	extern const struct shape shapes[];	140	extern const struct shape shapes[];
141		141
142	extern const struct shape *curshape;	142	extern const struct shape *curshape;
143	extern const struct shape *nextshape;	143	extern const struct shape *nextshape;
144		144
145	/*	145	/*
146	* Shapes fall at a rate faster than once per second.	146	* Shapes fall at a rate faster than once per second.
147	*	147	*
148	* The initial rate is determined by dividing 1 million microseconds	148	* The initial rate is determined by dividing 1 million microseconds
149	* by the game `level'. (This is at most 1 million, or one second.)	149	* by the game `level'. (This is at most 1 million, or one second.)
150	* Each time the fall-rate is used, it is decreased a little bit,	150	* Each time the fall-rate is used, it is decreased a little bit,
151	* depending on its current value, via the `faster' macro below.	151	* depending on its current value, via the `faster' macro below.
152	* The value eventually reaches a limit, and things stop going faster,	152	* The value eventually reaches a limit, and things stop going faster,
153	* but by then the game is utterly impossible.	153	* but by then the game is utterly impossible.
154	*/	154	*/
155	extern long fallrate; /* less than 1 million; smaller => faster */	155	extern long fallrate; /* less than 1 million; smaller => faster */
156		156
157	#define faster() (fallrate -= fallrate / 3000)	157	#define faster() (fallrate -= fallrate / 3000)
158		158
159	/*	159	/*
160	* Game level must be between 1 and 9. This controls the initial fall rate	160	* Game level must be between 1 and 9. This controls the initial fall rate
161	* and affects scoring.	161	* and affects scoring.
162	*/	162	*/
163	#define MINLEVEL 1	163	#define MINLEVEL 1
164	#define MAXLEVEL 9	164	#define MAXLEVEL 9
165		165
166	/*	166	/*
167	* Scoring is as follows:	167	* Scoring is as follows:
168	*	168	*
169	* When the shape comes to rest, and is integrated into the board,	169	* When the shape comes to rest, and is integrated into the board,
170	* we score one point. If the shape is high up (at a low-numbered row),	170	* we score one point. If the shape is high up (at a low-numbered row),
171	* and the user hits the space bar, the shape plummets all the way down,	171	* and the user hits the space bar, the shape plummets all the way down,
172	* and we score a point for each row it falls (plus one more as soon as	172	* and we score a point for each row it falls (plus one more as soon as
173	* we find that it is at rest and integrate it---until then, it can	173	* we find that it is at rest and integrate it---until then, it can
174	* still be moved or rotated).	174	* still be moved or rotated).
175	*	175	*
176	* If previewing has been turned on, the score is multiplied by PRE_PENALTY.	176	* If previewing has been turned on, the score is multiplied by PRE_PENALTY.
177	*/	177	*/
178	#define PRE_PENALTY 0.75	178	#define PRE_PENALTY 0.75
179		179
180	extern int score; /* The obvious thing */	180	extern int score; /* The obvious thing */
181		181
182	extern char key_msg[100];	182	extern char key_msg[100];
183	extern int showpreview;	183	extern int showpreview;
184	extern int classic;	184	extern int classic;
185		185
186	extern int fits_in(const struct shape *, int);	186	extern int fits_in(const struct shape *, int);
187	extern void place(const struct shape *, int, int);	187	extern void place(const struct shape *, int, int);
188	extern void stop(char *);	188	extern void stop(char *);
189		189
190	/** @}	190	/** @}
191	*/	191	*/
192		192