0,0 → 1,312 |
/* $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 |
*/ |
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/** @addtogroup tetris |
* @{ |
*/ |
/** @file |
*/ |
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/* |
* Tetris screen control. |
*/ |
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#include <err.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <string.h> |
#include <unistd.h> |
#include <io/stream.h> |
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#include <async.h> |
#include "screen.h" |
#include "tetris.h" |
#include "../console/console.h" |
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static cell curscreen[B_SIZE]; /* 1 => standout (or otherwise marked) */ |
static int curscore; |
static int isset; /* true => terminal is in game mode */ |
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/* |
* putstr() is for unpadded strings (either as in termcap(5) or |
* simply literal strings); |
*/ |
static inline void putstr(char *s) |
{ |
while (*s) |
putchar(*(s++)); |
} |
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static int con_phone; |
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static void set_style(int fgcolor, int bgcolor) |
{ |
async_msg_2(con_phone, CONSOLE_SET_STYLE, fgcolor, bgcolor); |
} |
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static void start_standout(void) |
{ |
set_style(0xf0f0f0, 0); |
} |
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static void resume_normal(void) |
{ |
set_style(0, 0xf0f0f0); |
} |
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void clear_screen(void) |
{ |
async_msg(con_phone, CONSOLE_CLEAR, 0); |
moveto(0,0); |
} |
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/* |
* Clear the screen, forgetting the current contents in the process. |
*/ |
void |
scr_clear(void) |
{ |
|
resume_normal(); |
async_msg(con_phone, CONSOLE_CLEAR, 0); |
curscore = -1; |
memset((char *)curscreen, 0, sizeof(curscreen)); |
} |
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/* |
* Set up screen |
*/ |
void |
scr_init(void) |
{ |
con_phone = get_fd_phone(1); |
async_msg(con_phone, CONSOLE_CURSOR_VISIBILITY, 0); |
resume_normal(); |
scr_clear(); |
} |
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void moveto(int r, int c) |
{ |
async_msg_2(con_phone, CONSOLE_GOTO, r, c); |
} |
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static void fflush(void) |
{ |
async_msg(con_phone, CONSOLE_FLUSH, 0); |
} |
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winsize_t winsize; |
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static int get_display_size(winsize_t *ws) |
{ |
return async_req_2(con_phone, CONSOLE_GETSIZE, 0, 0, &ws->ws_row, &ws->ws_col); |
} |
|
/* |
* Set up screen mode. |
*/ |
void |
scr_set(void) |
{ |
winsize_t 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]; |
|
snprintf(smallscr, sizeof(smallscr), |
"the screen is too small (must be at least %dx%d)", |
MINROWS, MINCOLS); |
stop(smallscr); |
} |
isset = 1; |
|
scr_clear(); |
} |
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/* |
* End screen mode. |
*/ |
void |
scr_end(void) |
{ |
} |
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void |
stop(char *why) |
{ |
|
if (isset) |
scr_end(); |
errx(1, "aborting: %s", why); |
} |
|
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/* |
* 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); |
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; |
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lastshape = nextshape; |
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/* 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(" "); |
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moveto(r-3, c-2); |
putstr("Next shape:"); |
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/* 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; |
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moveto(tr, 2*tc); |
putstr(" "); |
} |
resume_normal(); |
} |
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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) { |
if (cur_so) { |
resume_normal(); |
cur_so = 0; |
} |
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; |
} |
} |
} |
if (cur_so) |
resume_normal(); |
fflush(); |
} |
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/* |
* 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) |
{ |
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int l = strlen(s); |
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moveto(Rows - 2, ((Cols - l) >> 1) - 1); |
if (set) |
putstr(s); |
else |
while (--l >= 0) |
(void) putchar(' '); |
} |
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/** @} |
*/ |
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