WebSVN – HelenOS-historic – Diff – /uspace/trunk/tetris/screen.c


/*  $OpenBSD: screen.c,v 1.13 2006/04/20 03:25:36 ray Exp $ */
/*  $NetBSD: screen.c,v 1.4 1995/04/29 01:11:36 mycroft 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.
 *
 *  @(#)screen.c    8.1 (Berkeley) 5/31/93
 */
 
/*
 * Tetris screen control.
 */
 
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <io/stream.h>
 
 
#include <async.h>
#include "screen.h"
#include "tetris.h"
#include "../console/console.h"
 
static cell curscreen[B_SIZE];  /* 1 => standout (or otherwise marked) */
static int curscore;
static int isset;       /* true => terminal is in game mode */
static struct termios oldtt;
static void (*tstp)(int);
 
static void scr_stop(int);
static void stopset(int);
 
static char
        *CEstr;         /* clear to end of line */
 
 
/*
 * putstr() is for unpadded strings (either as in termcap(5) or
 * simply literal strings);
 */
#define putstr(s)   puts(s)
 
static int con_phone;
 
 
 
static void set_style(int fgcolor, int bgcolor)
{
    send_call_2(con_phone, CONSOLE_SET_STYLE, fgcolor, bgcolor);
}
 
static void start_standout(void)
{
    set_style(0, 0xe0e0e0);
}
 
static void resume_normal(void)
{
    set_style(0xe0e0e0, 0);
}
 
/*
 * Clear the screen, forgetting the current contents in the process.
 */
void
scr_clear(void)
{
 
    resume_normal();
    send_call(con_phone, CONSOLE_CLEAR, 0);
    curscore = -1;
    memset((char *)curscreen, 0, sizeof(curscreen));
}
 
/*
 * Set up screen
 */
void
scr_init(void)
{
    con_phone = get_fd_phone(1);
    resume_normal();
    scr_clear();
}
 
static void moveto(int r, int c)
{
    send_call_2(con_phone, CONSOLE_GOTO, r, c);
}
 
static void fflush(void)
{
    send_call(con_phone, CONSOLE_FLUSH, 0);
}
 
struct winsize {
    ipcarg_t ws_row;
    ipcarg_t ws_col;
};
 
static int get_display_size(struct winsize *ws)
{
    return sync_send_2(con_phone, CONSOLE_GETSIZE, 0, 0, &ws->ws_row, &ws->ws_col);
}
 
static void
scr_stop(int sig)
{
 
    scr_end();
    scr_set();
    scr_msg(key_msg, 1);
}
 
/*
 * Set up screen mode.
 */
void
scr_set(void)
{
    struct winsize ws;
 
    Rows = 0, Cols = 0;
    if (get_display_size(&ws) == 0) {
        Rows = ws.ws_row;
        Cols = ws.ws_col;
    }
    if (Rows < MINROWS || Cols < MINCOLS) {
        char smallscr[55];
 
        (void)snprintf(smallscr, sizeof(smallscr),
            "the screen is too small (must be at least %dx%d)",
            MINROWS, MINCOLS);
        stop(smallscr);
    }
    isset = 1;
 
    scr_clear();
}
 
/*
 * End screen mode.
 */
void
scr_end(void)
{
}
 
void
stop(char *why)
{
 
    if (isset)
        scr_end();
    errx(1, "aborting: %s", why);
}
 
 
 
 
 
 
 
 
/*
 * Update the screen.
 */
void
scr_update(void)
{
    cell *bp, *sp;
    cell so, cur_so = 0;
    int i, ccol, j;
    static const struct shape *lastshape;
 
    /* always leave cursor after last displayed point */
    curscreen[D_LAST * B_COLS - 1] = -1;
 
    if (score != curscore) {
        moveto(0, 0);
        (void) printf("Score: %d", score);
        curscore = score;
    }
 
    /* draw preview of next pattern */
    if (showpreview && (nextshape != lastshape)) {
        int i;
        static int r=5, c=2;
        int tr, tc, t;
 
        lastshape = nextshape;
 
        /* clean */
        resume_normal();
        moveto(r-1, c-1); putstr("          ");
        moveto(r,   c-1); putstr("          ");
        moveto(r+1, c-1); putstr("          ");
        moveto(r+2, c-1); putstr("          ");
 
        moveto(r-3, c-2);
        putstr("Next shape:");
 
        /* draw */
        start_standout();
        moveto(r, 2 * c);
        putstr("  ");
        for (i = 0; i < 3; i++) {
            t = c + r * B_COLS;
            t += nextshape->off[i];
 
            tr = t / B_COLS;
            tc = t % B_COLS;
 
            moveto(tr, 2*tc);
            putstr("  ");
        }
        resume_normal();
    }
 
    bp = &board[D_FIRST * B_COLS];
    sp = &curscreen[D_FIRST * B_COLS];
    for (j = D_FIRST; j < D_LAST; j++) {
        ccol = -1;
        for (i = 0; i < B_COLS; bp++, sp++, i++) {
            if (*sp == (so = *bp))
                continue;
            *sp = so;
            if (i != ccol) {
                moveto(RTOD(j), CTOD(i));
            }
            if (so != cur_so) {
                if (so)
                    start_standout();
                else
                    resume_normal();
                cur_so = so;
            }
            putstr("  ");
            ccol = i + 1;
            /*
             * Look ahead a bit, to avoid extra motion if
             * we will be redrawing the cell after the next.
             * Motion probably takes four or more characters,
             * so we save even if we rewrite two cells
             * `unnecessarily'.  Skip it all, though, if
             * the next cell is a different color.
             */
#define STOP (B_COLS - 3)
            if (i > STOP || sp[1] != bp[1] || so != bp[1])
                continue;
            if (sp[2] != bp[2])
                sp[1] = -1;
            else if (i < STOP && so == bp[2] && sp[3] != bp[3]) {
                sp[2] = -1;
                sp[1] = -1;
            }
        }
    }
    resume_normal();
 
    fflush();
}
 
/*
 * Write a message (set!=0), or clear the same message (set==0).
 * (We need its length in case we have to overwrite with blanks.)
 */
void
scr_msg(char *s, int set)
{
   
 
    int l = strlen(s);
   
    moveto(Rows - 2, ((Cols - l) >> 1) - 1);
    if (set)
        putstr(s);
    else
        while (--l >= 0)
            (void) putchar(' ');
 
 
 
 
}
 

Rev 1524	Rev 1528
1	/* $OpenBSD: screen.c,v 1.13 2006/04/20 03:25:36 ray Exp $ */	1	/* $OpenBSD: screen.c,v 1.13 2006/04/20 03:25:36 ray Exp $ */
2	/* $NetBSD: screen.c,v 1.4 1995/04/29 01:11:36 mycroft Exp $ */	2	/* $NetBSD: screen.c,v 1.4 1995/04/29 01:11:36 mycroft 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	* @(#)screen.c 8.1 (Berkeley) 5/31/93	35	* @(#)screen.c 8.1 (Berkeley) 5/31/93
36	*/	36	*/
37		37
38	/*	38	/*
39	* Tetris screen control.	39	* Tetris screen control.
40	*/	40	*/
41		41
42	#include <err.h>	42	#include <err.h>
43	#include <stdio.h>	43	#include <stdio.h>
44	#include <stdlib.h>	44	#include <stdlib.h>
45	#include <string.h>	45	#include <string.h>
46	#include <unistd.h>	46	#include <unistd.h>
47	#include <io/stream.h>	47	#include <io/stream.h>
48		48
49		49
50	#include <async.h>	50	#include <async.h>
51	#include "screen.h"	51	#include "screen.h"
52	#include "tetris.h"	52	#include "tetris.h"
53	#include "../console/console.h"	53	#include "../console/console.h"
54		54
55	static cell curscreen[B_SIZE]; /* 1 => standout (or otherwise marked) */	55	static cell curscreen[B_SIZE]; /* 1 => standout (or otherwise marked) */
56	static int curscore;	56	static int curscore;
57	static int isset; /* true => terminal is in game mode */	57	static int isset; /* true => terminal is in game mode */
58	static struct termios oldtt;	58	static struct termios oldtt;
59	static void (*tstp)(int);	59	static void (*tstp)(int);
60		60
61	static void scr_stop(int);	61	static void scr_stop(int);
62	static void stopset(int);	62	static void stopset(int);
63		63
64	static char	64	static char
65	CEstr; / clear to end of line */	65	CEstr; / clear to end of line */
66		66
67		67
68	/*	68	/*
69	* putstr() is for unpadded strings (either as in termcap(5) or	69	* putstr() is for unpadded strings (either as in termcap(5) or
70	* simply literal strings);	70	* simply literal strings);
71	*/	71	*/
72	#define putstr(s) puts(s)	72	#define putstr(s) puts(s)
73		73
74	static int con_phone;	74	static int con_phone;
75		75
76		76
77		77
78	static void set_style(int fgcolor, int bgcolor)	78	static void set_style(int fgcolor, int bgcolor)
79	{	79	{
80	send_call_2(con_phone, CONSOLE_SET_STYLE, fgcolor, bgcolor);	80	send_call_2(con_phone, CONSOLE_SET_STYLE, fgcolor, bgcolor);
81	}	81	}
82		82
83	static void start_standout(void)	83	static void start_standout(void)
84	{	84	{
85	set_style(0, 0xe0e0e0);	85	set_style(0, 0xe0e0e0);
86	}	86	}
87		87
88	static void resume_normal(void)	88	static void resume_normal(void)
89	{	89	{
90	set_style(0xe0e0e0, 0);	90	set_style(0xe0e0e0, 0);
91	}	91	}
92		92
93	/*	93	/*
94	* Clear the screen, forgetting the current contents in the process.	94	* Clear the screen, forgetting the current contents in the process.
95	*/	95	*/
96	void	96	void
97	scr_clear(void)	97	scr_clear(void)
98	{	98	{
99		99
-		100	resume_normal();
100	send_call(con_phone, CONSOLE_CLEAR, 0);	101	send_call(con_phone, CONSOLE_CLEAR, 0);
101	curscore = -1;	102	curscore = -1;
102	memset((char *)curscreen, 0, sizeof(curscreen));	103	memset((char *)curscreen, 0, sizeof(curscreen));
103	}	104	}
104		105
105	/*	106	/*
106	* Set up screen	107	* Set up screen
107	*/	108	*/
108	void	109	void
109	scr_init(void)	110	scr_init(void)
110	{	111	{
111	con_phone = get_fd_phone(1);	112	con_phone = get_fd_phone(1);
112	resume_normal();	113	resume_normal();
113	scr_clear();	114	scr_clear();
114	}	115	}
115		116
116	static void moveto(int r, int c)	117	static void moveto(int r, int c)
117	{	118	{
118	send_call_2(con_phone, CONSOLE_GOTO, r, c);	119	send_call_2(con_phone, CONSOLE_GOTO, r, c);
119	}	120	}
120		121
121	static void fflush(void)	122	static void fflush(void)
122	{	123	{
123	send_call(con_phone, CONSOLE_FLUSH, 0);	124	send_call(con_phone, CONSOLE_FLUSH, 0);
124	}	125	}
125		126
126	struct winsize {	127	struct winsize {
127	ipcarg_t ws_row;	128	ipcarg_t ws_row;
128	ipcarg_t ws_col;	129	ipcarg_t ws_col;
129	};	130	};
130		131
131	static int get_display_size(struct winsize *ws)	132	static int get_display_size(struct winsize *ws)
132	{	133	{
133	return sync_send_2(con_phone, CONSOLE_GETSIZE, 0, 0, &ws->ws_row, &ws->ws_col);	134	return sync_send_2(con_phone, CONSOLE_GETSIZE, 0, 0, &ws->ws_row, &ws->ws_col);
134	}	135	}
135		136
136	static void	137	static void
137	scr_stop(int sig)	138	scr_stop(int sig)
138	{	139	{
139		140
140	scr_end();	141	scr_end();
141	scr_set();	142	scr_set();
142	scr_msg(key_msg, 1);	143	scr_msg(key_msg, 1);
143	}	144	}
144		145
145	/*	146	/*
146	* Set up screen mode.	147	* Set up screen mode.
147	*/	148	*/
148	void	149	void
149	scr_set(void)	150	scr_set(void)
150	{	151	{
151	struct winsize ws;	152	struct winsize ws;
152		153
153	Rows = 0, Cols = 0;	154	Rows = 0, Cols = 0;
154	if (get_display_size(&ws) == 0) {	155	if (get_display_size(&ws) == 0) {
155	Rows = ws.ws_row;	156	Rows = ws.ws_row;
156	Cols = ws.ws_col;	157	Cols = ws.ws_col;
157	}	158	}
158	if (Rows < MINROWS \|\| Cols < MINCOLS) {	159	if (Rows < MINROWS \|\| Cols < MINCOLS) {
159	char smallscr[55];	160	char smallscr[55];
160		161
161	(void)snprintf(smallscr, sizeof(smallscr),	162	(void)snprintf(smallscr, sizeof(smallscr),
162	"the screen is too small (must be at least %dx%d)",	163	"the screen is too small (must be at least %dx%d)",
163	MINROWS, MINCOLS);	164	MINROWS, MINCOLS);
164	stop(smallscr);	165	stop(smallscr);
165	}	166	}
166	isset = 1;	167	isset = 1;
167		168
168	scr_clear();	169	scr_clear();
169	}	170	}
170		171
171	/*	172	/*
172	* End screen mode.	173	* End screen mode.
173	*/	174	*/
174	void	175	void
175	scr_end(void)	176	scr_end(void)
176	{	177	{
177	}	178	}
178		179
179	void	180	void
180	stop(char *why)	181	stop(char *why)
181	{	182	{
182		183
183	if (isset)	184	if (isset)
184	scr_end();	185	scr_end();
185	errx(1, "aborting: %s", why);	186	errx(1, "aborting: %s", why);
186	}	187	}
187		188
188		189
189	#if vax && !__GNUC__	-
190	typedef int regcell; /* pcc is bad at `register char', etc */	-
191	#else	-
192	typedef cell regcell;	-
193	#endif	-
194		-
195	/*	190	/*
196	* Update the screen.	191	* Update the screen.
197	*/	192	*/
198	void	193	void
199	scr_update(void)	194	scr_update(void)
200	{	195	{
201	cell bp, sp;	196	cell bp, sp;
202	regcell so, cur_so = 0;	197	cell so, cur_so = 0;
203	int i, ccol, j;	198	int i, ccol, j;
204	static const struct shape *lastshape;	199	static const struct shape *lastshape;
205		200
206	/* always leave cursor after last displayed point */	201	/* always leave cursor after last displayed point */
207	curscreen[D_LAST * B_COLS - 1] = -1;	202	curscreen[D_LAST * B_COLS - 1] = -1;
208		203
209	if (score != curscore) {	204	if (score != curscore) {
210	moveto(0, 0);	205	moveto(0, 0);
211	(void) printf("Score: %d", score);	206	(void) printf("Score: %d", score);
212	curscore = score;	207	curscore = score;
213	}	208	}
214		209
215	/* draw preview of next pattern */	210	/* draw preview of next pattern */
216	if (showpreview && (nextshape != lastshape)) {	211	if (showpreview && (nextshape != lastshape)) {
217	int i;	212	int i;
218	static int r=5, c=2;	213	static int r=5, c=2;
219	int tr, tc, t;	214	int tr, tc, t;
220		215
221	lastshape = nextshape;	216	lastshape = nextshape;
222		217
223	/* clean */	218	/* clean */
224	resume_normal();	219	resume_normal();
225	moveto(r-1, c-1); putstr(" ");	220	moveto(r-1, c-1); putstr(" ");
226	moveto(r, c-1); putstr(" ");	221	moveto(r, c-1); putstr(" ");
227	moveto(r+1, c-1); putstr(" ");	222	moveto(r+1, c-1); putstr(" ");
228	moveto(r+2, c-1); putstr(" ");	223	moveto(r+2, c-1); putstr(" ");
229		224
230	moveto(r-3, c-2);	225	moveto(r-3, c-2);
231	putstr("Next shape:");	226	putstr("Next shape:");
232		227
233	/* draw */	228	/* draw */
234	start_standout();	229	start_standout();
235	moveto(r, 2 * c);	230	moveto(r, 2 * c);
236	putstr(" ");	231	putstr(" ");
237	for (i = 0; i < 3; i++) {	232	for (i = 0; i < 3; i++) {
238	t = c + r * B_COLS;	233	t = c + r * B_COLS;
239	t += nextshape->off[i];	234	t += nextshape->off[i];
240		235
241	tr = t / B_COLS;	236	tr = t / B_COLS;
242	tc = t % B_COLS;	237	tc = t % B_COLS;
243		238
244	moveto(tr, 2*tc);	239	moveto(tr, 2*tc);
245	putstr(" ");	240	putstr(" ");
246	}	241	}
247	resume_normal();	242	resume_normal();
248	}	243	}
249		244
250	bp = &board[D_FIRST * B_COLS];	245	bp = &board[D_FIRST * B_COLS];
251	sp = &curscreen[D_FIRST * B_COLS];	246	sp = &curscreen[D_FIRST * B_COLS];
252	for (j = D_FIRST; j < D_LAST; j++) {	247	for (j = D_FIRST; j < D_LAST; j++) {
253	ccol = -1;	248	ccol = -1;
254	for (i = 0; i < B_COLS; bp++, sp++, i++) {	249	for (i = 0; i < B_COLS; bp++, sp++, i++) {
255	if (sp == (so = bp))	250	if (sp == (so = bp))
256	continue;	251	continue;
257	*sp = so;	252	*sp = so;
258	if (i != ccol) {	253	if (i != ccol) {
259	moveto(RTOD(j), CTOD(i));	254	moveto(RTOD(j), CTOD(i));
260	}	255	}
261	if (so != cur_so) {	256	if (so != cur_so) {
262	if (so)	257	if (so)
263	start_standout();	258	start_standout();
264	else	259	else
265	resume_normal();	260	resume_normal();
266	cur_so = so;	261	cur_so = so;
267	}	262	}
268	putstr(" ");	263	putstr(" ");
269	ccol = i + 1;	264	ccol = i + 1;
270	/*	265	/*
271	* Look ahead a bit, to avoid extra motion if	266	* Look ahead a bit, to avoid extra motion if
272	* we will be redrawing the cell after the next.	267	* we will be redrawing the cell after the next.
273	* Motion probably takes four or more characters,	268	* Motion probably takes four or more characters,
274	* so we save even if we rewrite two cells	269	* so we save even if we rewrite two cells
275	* `unnecessarily'. Skip it all, though, if	270	* `unnecessarily'. Skip it all, though, if
276	* the next cell is a different color.	271	* the next cell is a different color.
277	*/	272	*/
278	#define STOP (B_COLS - 3)	273	#define STOP (B_COLS - 3)
279	if (i > STOP \|\| sp[1] != bp[1] \|\| so != bp[1])	274	if (i > STOP \|\| sp[1] != bp[1] \|\| so != bp[1])
280	continue;	275	continue;
281	if (sp[2] != bp[2])	276	if (sp[2] != bp[2])
282	sp[1] = -1;	277	sp[1] = -1;
283	else if (i < STOP && so == bp[2] && sp[3] != bp[3]) {	278	else if (i < STOP && so == bp[2] && sp[3] != bp[3]) {
284	sp[2] = -1;	279	sp[2] = -1;
285	sp[1] = -1;	280	sp[1] = -1;
286	}	281	}
287	}	282	}
288	}	283	}
289	resume_normal();	284	resume_normal();
290		285
291	fflush();	286	fflush();
292	}	287	}
293		288
294	/*	289	/*
295	* Write a message (set!=0), or clear the same message (set==0).	290	* Write a message (set!=0), or clear the same message (set==0).
296	* (We need its length in case we have to overwrite with blanks.)	291	* (We need its length in case we have to overwrite with blanks.)
297	*/	292	*/
298	void	293	void
299	scr_msg(char *s, int set)	294	scr_msg(char *s, int set)
300	{	295	{
301		296
302	if (set \|\| CEstr == NULL) {	-
303	int l = strlen(s);	297	int l = strlen(s);
304		298
305	moveto(Rows - 2, ((Cols - l) >> 1) - 1);	299	moveto(Rows - 2, ((Cols - l) >> 1) - 1);
306	if (set)	300	if (set)
307	putstr(s);	301	putstr(s);
308	else	302	else
309	while (--l >= 0)	303	while (--l >= 0)
310	(void) putchar(' ');	304	(void) putchar(' ');
311	} else {	-
312	moveto(Rows - 2, 0);	-
313	putpad(CEstr);	-
314	}	-
315	}	305	}
316		306

Subversion Repositories HelenOS-historic

(root)/uspace/trunk/tetris/screen.c – Rev 1524 → 1528