| 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 $ */
|
|---|
| 3 |
|
|---|
| 4 | /*-
|
|---|
| 5 | * Copyright (c) 1992, 1993
|
|---|
| 6 | * The Regents of the University of California. All rights reserved.
|
|---|
| 7 | *
|
|---|
| 8 | * This code is derived from software contributed to Berkeley by
|
|---|
| 9 | * Chris Torek and Darren F. Provine.
|
|---|
| 10 | *
|
|---|
| 11 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 12 | * modification, are permitted provided that the following conditions
|
|---|
| 13 | * are met:
|
|---|
| 14 | * 1. Redistributions of source code must retain the above copyright
|
|---|
| 15 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 16 | * 2. Redistributions in binary form must reproduce the above copyright
|
|---|
| 17 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 18 | * documentation and/or other materials provided with the distribution.
|
|---|
| 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
|
|---|
| 21 | * without specific prior written permission.
|
|---|
| 22 | *
|
|---|
| 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
|
|---|
| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|---|
| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|---|
| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|---|
| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|---|
| 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
|
|---|
| 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
|
|---|
| 33 | * SUCH DAMAGE.
|
|---|
| 34 | *
|
|---|
| 35 | * @(#)screen.c 8.1 (Berkeley) 5/31/93
|
|---|
| 36 | */
|
|---|
| 37 |
|
|---|
| 38 | /** @addtogroup tetris
|
|---|
| 39 | * @{
|
|---|
| 40 | */
|
|---|
| 41 | /** @file
|
|---|
| 42 | */
|
|---|
| 43 |
|
|---|
| 44 | /*
|
|---|
| 45 | * Tetris screen control.
|
|---|
| 46 | */
|
|---|
| 47 |
|
|---|
| 48 | #include <err.h>
|
|---|
| 49 | #include <stdio.h>
|
|---|
| 50 | #include <stdlib.h>
|
|---|
| 51 | #include <string.h>
|
|---|
| 52 | #include <unistd.h>
|
|---|
| 53 | #include <console.h>
|
|---|
| 54 |
|
|---|
| 55 | #include <async.h>
|
|---|
| 56 | #include "screen.h"
|
|---|
| 57 | #include "tetris.h"
|
|---|
| 58 | #include <ipc/console.h>
|
|---|
| 59 |
|
|---|
| 60 | static cell curscreen[B_SIZE]; /* 1 => standout (or otherwise marked) */
|
|---|
| 61 | static int curscore;
|
|---|
| 62 | static int isset; /* true => terminal is in game mode */
|
|---|
| 63 |
|
|---|
| 64 |
|
|---|
| 65 | /*
|
|---|
| 66 | * putstr() is for unpadded strings (either as in termcap(5) or
|
|---|
| 67 | * simply literal strings);
|
|---|
| 68 | */
|
|---|
| 69 | static inline void putstr(char *s)
|
|---|
| 70 | {
|
|---|
| 71 | while (*s)
|
|---|
| 72 | putchar(*(s++));
|
|---|
| 73 | }
|
|---|
| 74 |
|
|---|
| 75 | static void start_standout(void)
|
|---|
| 76 | {
|
|---|
| 77 | console_set_rgb_color(0xf0f0f0, 0);
|
|---|
| 78 | }
|
|---|
| 79 |
|
|---|
| 80 | static void resume_normal(void)
|
|---|
| 81 | {
|
|---|
| 82 | console_set_rgb_color(0, 0xf0f0f0);
|
|---|
| 83 | }
|
|---|
| 84 |
|
|---|
| 85 | void clear_screen(void)
|
|---|
| 86 | {
|
|---|
| 87 | console_clear();
|
|---|
| 88 | moveto(0, 0);
|
|---|
| 89 | }
|
|---|
| 90 |
|
|---|
| 91 | /*
|
|---|
| 92 | * Clear the screen, forgetting the current contents in the process.
|
|---|
| 93 | */
|
|---|
| 94 | void
|
|---|
| 95 | scr_clear(void)
|
|---|
| 96 | {
|
|---|
| 97 |
|
|---|
| 98 | resume_normal();
|
|---|
| 99 | console_clear();
|
|---|
| 100 | curscore = -1;
|
|---|
| 101 | memset((char *)curscreen, 0, sizeof(curscreen));
|
|---|
| 102 | }
|
|---|
| 103 |
|
|---|
| 104 | /*
|
|---|
| 105 | * Set up screen
|
|---|
| 106 | */
|
|---|
| 107 | void
|
|---|
| 108 | scr_init(void)
|
|---|
| 109 | {
|
|---|
| 110 | console_cursor_visibility(0);
|
|---|
| 111 | resume_normal();
|
|---|
| 112 | scr_clear();
|
|---|
| 113 | }
|
|---|
| 114 |
|
|---|
| 115 | void moveto(int r, int c)
|
|---|
| 116 | {
|
|---|
| 117 | console_goto(r, c);
|
|---|
| 118 | }
|
|---|
| 119 |
|
|---|
| 120 | static void fflush(void)
|
|---|
| 121 | {
|
|---|
| 122 | console_flush();
|
|---|
| 123 | }
|
|---|
| 124 |
|
|---|
| 125 | winsize_t winsize;
|
|---|
| 126 |
|
|---|
| 127 | static int get_display_size(winsize_t *ws)
|
|---|
| 128 | {
|
|---|
| 129 | return console_get_size(&ws->ws_row, &ws->ws_col);
|
|---|
| 130 | }
|
|---|
| 131 |
|
|---|
| 132 | /*
|
|---|
| 133 | * Set up screen mode.
|
|---|
| 134 | */
|
|---|
| 135 | void
|
|---|
| 136 | scr_set(void)
|
|---|
| 137 | {
|
|---|
| 138 | winsize_t ws;
|
|---|
| 139 |
|
|---|
| 140 | Rows = 0, Cols = 0;
|
|---|
| 141 | if (get_display_size(&ws) == 0) {
|
|---|
| 142 | Rows = ws.ws_row;
|
|---|
| 143 | Cols = ws.ws_col;
|
|---|
| 144 | }
|
|---|
| 145 | if (Rows < MINROWS || Cols < MINCOLS) {
|
|---|
| 146 | char smallscr[55];
|
|---|
| 147 |
|
|---|
| 148 | snprintf(smallscr, sizeof(smallscr),
|
|---|
| 149 | "the screen is too small (must be at least %dx%d)",
|
|---|
| 150 | MINROWS, MINCOLS);
|
|---|
| 151 | stop(smallscr);
|
|---|
| 152 | }
|
|---|
| 153 | isset = 1;
|
|---|
| 154 |
|
|---|
| 155 | scr_clear();
|
|---|
| 156 | }
|
|---|
| 157 |
|
|---|
| 158 | /*
|
|---|
| 159 | * End screen mode.
|
|---|
| 160 | */
|
|---|
| 161 | void
|
|---|
| 162 | scr_end(void)
|
|---|
| 163 | {
|
|---|
| 164 | }
|
|---|
| 165 |
|
|---|
| 166 | void
|
|---|
| 167 | stop(char *why)
|
|---|
| 168 | {
|
|---|
| 169 |
|
|---|
| 170 | if (isset)
|
|---|
| 171 | scr_end();
|
|---|
| 172 | errx(1, "aborting: %s", why);
|
|---|
| 173 | }
|
|---|
| 174 |
|
|---|
| 175 |
|
|---|
| 176 | /*
|
|---|
| 177 | * Update the screen.
|
|---|
| 178 | */
|
|---|
| 179 | void
|
|---|
| 180 | scr_update(void)
|
|---|
| 181 | {
|
|---|
| 182 | cell *bp, *sp;
|
|---|
| 183 | cell so, cur_so = 0;
|
|---|
| 184 | int i, ccol, j;
|
|---|
| 185 | static const struct shape *lastshape;
|
|---|
| 186 |
|
|---|
| 187 | /* always leave cursor after last displayed point */
|
|---|
| 188 | curscreen[D_LAST * B_COLS - 1] = -1;
|
|---|
| 189 |
|
|---|
| 190 | if (score != curscore) {
|
|---|
| 191 | moveto(0, 0);
|
|---|
| 192 | printf("Score: %d", score);
|
|---|
| 193 | curscore = score;
|
|---|
| 194 | }
|
|---|
| 195 |
|
|---|
| 196 | /* draw preview of next pattern */
|
|---|
| 197 | if (showpreview && (nextshape != lastshape)) {
|
|---|
| 198 | int i;
|
|---|
| 199 | static int r=5, c=2;
|
|---|
| 200 | int tr, tc, t;
|
|---|
| 201 |
|
|---|
| 202 | lastshape = nextshape;
|
|---|
| 203 |
|
|---|
| 204 | /* clean */
|
|---|
| 205 | resume_normal();
|
|---|
| 206 | moveto(r-1, c-1); putstr(" ");
|
|---|
| 207 | moveto(r, c-1); putstr(" ");
|
|---|
| 208 | moveto(r+1, c-1); putstr(" ");
|
|---|
| 209 | moveto(r+2, c-1); putstr(" ");
|
|---|
| 210 |
|
|---|
| 211 | moveto(r-3, c-2);
|
|---|
| 212 | putstr("Next shape:");
|
|---|
| 213 |
|
|---|
| 214 | /* draw */
|
|---|
| 215 | start_standout();
|
|---|
| 216 | moveto(r, 2 * c);
|
|---|
| 217 | putstr(" ");
|
|---|
| 218 | for (i = 0; i < 3; i++) {
|
|---|
| 219 | t = c + r * B_COLS;
|
|---|
| 220 | t += nextshape->off[i];
|
|---|
| 221 |
|
|---|
| 222 | tr = t / B_COLS;
|
|---|
| 223 | tc = t % B_COLS;
|
|---|
| 224 |
|
|---|
| 225 | moveto(tr, 2*tc);
|
|---|
| 226 | putstr(" ");
|
|---|
| 227 | }
|
|---|
| 228 | resume_normal();
|
|---|
| 229 | }
|
|---|
| 230 |
|
|---|
| 231 | bp = &board[D_FIRST * B_COLS];
|
|---|
| 232 | sp = &curscreen[D_FIRST * B_COLS];
|
|---|
| 233 | for (j = D_FIRST; j < D_LAST; j++) {
|
|---|
| 234 | ccol = -1;
|
|---|
| 235 | for (i = 0; i < B_COLS; bp++, sp++, i++) {
|
|---|
| 236 | if (*sp == (so = *bp))
|
|---|
| 237 | continue;
|
|---|
| 238 | *sp = so;
|
|---|
| 239 | if (i != ccol) {
|
|---|
| 240 | if (cur_so) {
|
|---|
| 241 | resume_normal();
|
|---|
| 242 | cur_so = 0;
|
|---|
| 243 | }
|
|---|
| 244 | moveto(RTOD(j), CTOD(i));
|
|---|
| 245 | }
|
|---|
| 246 | if (so != cur_so) {
|
|---|
| 247 | if (so)
|
|---|
| 248 | start_standout();
|
|---|
| 249 | else
|
|---|
| 250 | resume_normal();
|
|---|
| 251 | cur_so = so;
|
|---|
| 252 | }
|
|---|
| 253 | putstr(" ");
|
|---|
| 254 |
|
|---|
| 255 | ccol = i + 1;
|
|---|
| 256 | /*
|
|---|
| 257 | * Look ahead a bit, to avoid extra motion if
|
|---|
| 258 | * we will be redrawing the cell after the next.
|
|---|
| 259 | * Motion probably takes four or more characters,
|
|---|
| 260 | * so we save even if we rewrite two cells
|
|---|
| 261 | * `unnecessarily'. Skip it all, though, if
|
|---|
| 262 | * the next cell is a different color.
|
|---|
| 263 | */
|
|---|
| 264 | #define STOP (B_COLS - 3)
|
|---|
| 265 | if (i > STOP || sp[1] != bp[1] || so != bp[1])
|
|---|
| 266 | continue;
|
|---|
| 267 | if (sp[2] != bp[2])
|
|---|
| 268 | sp[1] = -1;
|
|---|
| 269 | else if (i < STOP && so == bp[2] && sp[3] != bp[3]) {
|
|---|
| 270 | sp[2] = -1;
|
|---|
| 271 | sp[1] = -1;
|
|---|
| 272 | }
|
|---|
| 273 | }
|
|---|
| 274 | }
|
|---|
| 275 | if (cur_so)
|
|---|
| 276 | resume_normal();
|
|---|
| 277 | fflush();
|
|---|
| 278 | }
|
|---|
| 279 |
|
|---|
| 280 | /*
|
|---|
| 281 | * Write a message (set!=0), or clear the same message (set==0).
|
|---|
| 282 | * (We need its length in case we have to overwrite with blanks.)
|
|---|
| 283 | */
|
|---|
| 284 | void
|
|---|
| 285 | scr_msg(char *s, int set)
|
|---|
| 286 | {
|
|---|
| 287 |
|
|---|
| 288 | int l = strlen(s);
|
|---|
| 289 |
|
|---|
| 290 | moveto(Rows - 2, ((Cols - l) >> 1) - 1);
|
|---|
| 291 | if (set)
|
|---|
| 292 | putstr(s);
|
|---|
| 293 | else
|
|---|
| 294 | while (--l >= 0)
|
|---|
| 295 | (void) putchar(' ');
|
|---|
| 296 | }
|
|---|
| 297 |
|
|---|
| 298 | /** @}
|
|---|
| 299 | */
|
|---|
| 300 |
|
|---|
