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| /* $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 |
| */ |
| |
| /** @addtogroup tetris |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| /* |
| * 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 "../../srv/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 */ |
| |
| |
| /* |
| * putstr() is for unpadded strings (either as in termcap(5) or |
| * simply literal strings); |
| */ |
| static inline void putstr(char *s) |
| { |
| while (*s) |
| putchar(*(s++)); |
| } |
| |
| static int con_phone; |
| |
| |
| |
| static void set_style(int fgcolor, int bgcolor) |
| { |
| async_msg_2(con_phone, CONSOLE_SET_STYLE, fgcolor, bgcolor); |
| } |
| |
| static void start_standout(void) |
| { |
| set_style(0xf0f0f0, 0); |
| } |
| |
| static void resume_normal(void) |
| { |
| set_style(0, 0xf0f0f0); |
| } |
| |
| |
| void clear_screen(void) |
| { |
| async_msg(con_phone, CONSOLE_CLEAR, 0); |
| moveto(0,0); |
| } |
| |
| /* |
| * 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)); |
| } |
| |
| /* |
| * 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(); |
| } |
| |
| void moveto(int r, int c) |
| { |
| async_msg_2(con_phone, CONSOLE_GOTO, r, c); |
| } |
| |
| static void fflush(void) |
| { |
| async_msg(con_phone, CONSOLE_FLUSH, 0); |
| } |
| |
| winsize_t winsize; |
| |
| 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(); |
| } |
| |
| /* |
| * 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); |
| 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) { |
| 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(); |
| } |
| |
| /* |
| * 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(' '); |
| } |
| |
| /** @} |
| */ |
| |