source: libcaca/trunk/examples/aafire.c @ 320

Last change on this file since 320 was 320, checked in by Sam Hocevar, 18 years ago
  • examples/cacaball.c: + Crop the palette so that it looks a bit more like metaballs.
  • AUTHORS THANKS: + Credited Jylam and Jan Hubicka.
  • Property svn:keywords set to Id
File size: 7.9 KB
Line 
1/*
2 *  cacafire      fire demo for libcaca
3 *  Copyright (c) 2003 Sam Hocevar <sam@zoy.org>
4 *                1998, 1999, 2001 Jan Hubicka <hubicka@freesoft.cz>
5 *                All Rights Reserved
6 *
7 *  $Id: aafire.c 320 2004-01-06 16:31:27Z sam $
8 *
9 *  This program is free software; you can redistribute it and/or
10 *  modify it under the terms of the GNU Lesser General Public
11 *  License as published by the Free Software Foundation; either
12 *  version 2 of the License, or (at your option) any later version.
13 *
14 *  This program is distributed in the hope that it will be useful,
15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 *  Lesser General Public License for more details.
18 *
19 *  You should have received a copy of the GNU Lesser General Public
20 *  License along with this program; if not, write to the Free Software
21 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 *  02111-1307  USA
23 */
24
25#ifdef LIBCACA
26#include "config.h"
27#include <stdio.h>
28#include <stdlib.h>
29#include <string.h>
30#include "caca.h"
31#else
32#include <stdio.h>
33#include "aalib.h"
34
35#define XSIZ aa_imgwidth(context)
36#define YSIZ (aa_imgheight(context)-4)
37#endif
38#define MAXTABLE (256*5)
39#ifdef LIBCACA
40static int XSIZ, YSIZ;
41static struct caca_bitmap *caca_bitmap;
42static char *bitmap;
43#else
44static aa_context *context;
45static aa_renderparams *params;
46static aa_palette palette;
47#endif
48static unsigned int table[MAXTABLE];
49#ifdef LIBCACA
50static int const pal[] =
51#else
52__AA_CONST static int pal[] =
53#endif
54{
55  0, 0, 0, 0, 0, 6, 0, 0, 6, 0, 0, 7, 0, 0, 8, 0, 0, 8, 0, 0, 9, 0, 0, 10,
562, 0, 10, 4, 0, 9, 6, 0, 9, 8, 0, 8, 10, 0, 7, 12, 0, 7, 14, 0, 6, 16, 0, 5,
57  18, 0, 5, 20, 0, 4, 22, 0, 4, 24, 0, 3, 26, 0, 2, 28, 0, 2, 30, 0, 1, 32, 0, 0,
58  32, 0, 0, 33, 0, 0, 34, 0, 0, 35, 0, 0, 36, 0, 0, 36, 0, 0, 37, 0, 0, 38, 0, 0,
59  39, 0, 0, 40, 0, 0, 40, 0, 0, 41, 0, 0, 42, 0, 0, 43, 0, 0, 44, 0, 0, 45, 0, 0,
60  46, 1, 0, 47, 1, 0, 48, 2, 0, 49, 2, 0, 50, 3, 0, 51, 3, 0, 52, 4, 0, 53, 4, 0,
61  54, 5, 0, 55, 5, 0, 56, 6, 0, 57, 6, 0, 58, 7, 0, 59, 7, 0, 60, 8, 0, 61, 8, 0,
62  63, 9, 0, 63, 9, 0, 63, 10, 0, 63, 10, 0, 63, 11, 0, 63, 11, 0, 63, 12, 0, 63, 12, 0,
63  63, 13, 0, 63, 13, 0, 63, 14, 0, 63, 14, 0, 63, 15, 0, 63, 15, 0, 63, 16, 0, 63, 16, 0,
64  63, 17, 0, 63, 17, 0, 63, 18, 0, 63, 18, 0, 63, 19, 0, 63, 19, 0, 63, 20, 0, 63, 20, 0,
65  63, 21, 0, 63, 21, 0, 63, 22, 0, 63, 22, 0, 63, 23, 0, 63, 24, 0, 63, 24, 0, 63, 25, 0,
66  63, 25, 0, 63, 26, 0, 63, 26, 0, 63, 27, 0, 63, 27, 0, 63, 28, 0, 63, 28, 0, 63, 29, 0,
67  63, 29, 0, 63, 30, 0, 63, 30, 0, 63, 31, 0, 63, 31, 0, 63, 32, 0, 63, 32, 0, 63, 33, 0,
68  63, 33, 0, 63, 34, 0, 63, 34, 0, 63, 35, 0, 63, 35, 0, 63, 36, 0, 63, 36, 0, 63, 37, 0,
69  63, 38, 0, 63, 38, 0, 63, 39, 0, 63, 39, 0, 63, 40, 0, 63, 40, 0, 63, 41, 0, 63, 41, 0,
70  63, 42, 0, 63, 42, 0, 63, 43, 0, 63, 43, 0, 63, 44, 0, 63, 44, 0, 63, 45, 0, 63, 45, 0,
71  63, 46, 0, 63, 46, 0, 63, 47, 0, 63, 47, 0, 63, 48, 0, 63, 48, 0, 63, 49, 0, 63, 49, 0,
72  63, 50, 0, 63, 50, 0, 63, 51, 0, 63, 52, 0, 63, 52, 0, 63, 52, 0, 63, 52, 0, 63, 52, 0,
73  63, 53, 0, 63, 53, 0, 63, 53, 0, 63, 53, 0, 63, 54, 0, 63, 54, 0, 63, 54, 0, 63, 54, 0,
74  63, 54, 0, 63, 55, 0, 63, 55, 0, 63, 55, 0, 63, 55, 0, 63, 56, 0, 63, 56, 0, 63, 56, 0,
75  63, 56, 0, 63, 57, 0, 63, 57, 0, 63, 57, 0, 63, 57, 0, 63, 57, 0, 63, 58, 0, 63, 58, 0,
76  63, 58, 0, 63, 58, 0, 63, 59, 0, 63, 59, 0, 63, 59, 0, 63, 59, 0, 63, 60, 0, 63, 60, 0,
77  63, 60, 0, 63, 60, 0, 63, 60, 0, 63, 61, 0, 63, 61, 0, 63, 61, 0, 63, 61, 0, 63, 62, 0,
78  63, 62, 0, 63, 62, 0, 63, 62, 0, 63, 63, 0, 63, 63, 1, 63, 63, 2, 63, 63, 3, 63, 63, 4,
79  63, 63, 5, 63, 63, 6, 63, 63, 7, 63, 63, 8, 63, 63, 9, 63, 63, 10, 63, 63, 10, 63, 63, 11,
80  63, 63, 12, 63, 63, 13, 63, 63, 14, 63, 63, 15, 63, 63, 16, 63, 63, 17, 63, 63, 18, 63, 63, 19,
81  63, 63, 20, 63, 63, 21, 63, 63, 21, 63, 63, 22, 63, 63, 23, 63, 63, 24, 63, 63, 25, 63, 63, 26,
82  63, 63, 27, 63, 63, 28, 63, 63, 29, 63, 63, 30, 63, 63, 31, 63, 63, 31, 63, 63, 32, 63, 63, 33,
83  63, 63, 34, 63, 63, 35, 63, 63, 36, 63, 63, 37, 63, 63, 38, 63, 63, 39, 63, 63, 40, 63, 63, 41,
84  63, 63, 42, 63, 63, 42, 63, 63, 43, 63, 63, 44, 63, 63, 45, 63, 63, 46, 63, 63, 47, 63, 63, 48,
85  63, 63, 49, 63, 63, 50, 63, 63, 51, 63, 63, 52, 63, 63, 52, 63, 63, 53, 63, 63, 54, 63, 63, 55,
86  63, 63, 56, 63, 63, 57, 63, 63, 58, 63, 63, 59, 63, 63, 60, 63, 63, 61, 63, 63, 62, 63, 63, 63};
87
88
89static void
90initialize (void)
91{
92  int i;
93#ifdef LIBCACA
94  int r[256], g[256], b[256], a[256];
95#endif
96
97#ifdef LIBCACA
98  if (caca_init())
99    {
100      printf ("Failed to initialize libcaca\n");
101      exit (1);
102    }
103  caca_set_delay(0);
104  XSIZ = caca_get_width() * 2;
105  YSIZ = caca_get_height() * 2 - 4;
106#else
107  context = aa_autoinit (&aa_defparams);
108  if (context == NULL)
109    {
110      printf ("Failed to initialize aalib\n");
111      exit (1);
112    }
113  aa_autoinitkbd (context, 0);
114  params = aa_getrenderparams ();
115#endif
116
117  for (i = 0; i < 256; i++)
118#ifdef LIBCACA
119  {
120    r[i] = pal[i * 3] * 64;
121    g[i] = pal[i * 3 + 1] * 64;
122    b[i] = pal[i * 3 + 2] * 64;
123    a[i] = 0xfff;
124  }
125#else
126    aa_setpalette (palette, i, pal[i * 3] * 4,
127                   pal[i * 3 + 1] * 4, pal[i * 3 + 2] * 4);
128#endif
129
130#ifdef LIBCACA
131  caca_bitmap = caca_create_bitmap(8, XSIZ, YSIZ - 2, XSIZ, 0, 0, 0, 0);
132  caca_set_bitmap_palette(caca_bitmap, r, g, b, a);
133  bitmap = malloc(4 * caca_get_width() * caca_get_height() * sizeof(char));
134  memset(bitmap, 0, 4 * caca_get_width() * caca_get_height());
135#else
136  aa_hidecursor (context);
137#endif
138}
139static void
140uninitialize (void)
141{
142#ifdef LIBCACA
143  caca_end();
144#else
145  aa_close (context);
146#endif
147  exit (0);
148}
149static void
150gentable (void)
151{
152  unsigned int i, p2;
153  unsigned int minus = 800 / YSIZ;
154  if (minus == 0)
155    minus = 1;
156  for (i = 0; i < MAXTABLE; i++)
157    {
158      if (i > minus)
159        {
160          p2 = (i - minus) / 5;
161          table[i] = p2;
162        }
163      else
164        table[i] = 0;
165    }
166}
167
168#define MA 5
169static void
170firemain (void)
171{
172  register unsigned int i;
173  unsigned char *p;
174#ifndef LIBCACA
175  char *bitmap = aa_image (context);
176#endif
177  i = 0;
178#define END (bitmap + XSIZ * YSIZ)
179  for (p = bitmap; p <= (unsigned char *) (END); p += 1)
180    {
181      *p = table[(*(p + XSIZ - 1) + *(p + XSIZ + 1) + *(p + XSIZ)) +
182                 (*(p + 2 * XSIZ - 1) + *(p + 2 * XSIZ + 1))];
183    }
184}
185
186#define min(x,y) ((x)<(y)?(x):(y))
187static void
188drawfire (void)
189{
190  unsigned int i, last1, i1, i2;
191  static int loop = 0, sloop = 0;
192  static unsigned int height = 0;
193  register unsigned char *p;
194#ifndef LIBCACA
195  char *bitmap = aa_image (context);
196#endif
197
198  height++;
199  loop--;
200  if (loop < 0)
201    loop = rand () % 3, sloop++;;
202  i1 = 1;
203  i2 = 4 * XSIZ + 1;
204  for (p = (char *) bitmap + XSIZ * (YSIZ + 0);
205       p < ((unsigned char *) bitmap + XSIZ * (YSIZ + 1));
206       p++, i1 += 4, i2 -= 4)
207    {
208      last1 = rand () % min (i1, min (i2, height));
209      i = rand () % 6;
210      for (; p < (unsigned char *) bitmap + XSIZ * (YSIZ + 1) && i != 0;
211           p++, i--, i1 += 4, i2 -= 4)
212        *p = last1, last1 += rand () % 6 - 2, *(p + XSIZ) = last1, last1 +=
213          rand () % 6 - 2;
214      *(p + 2 * XSIZ) = last1, last1 += rand () % 6 - 2;
215    }
216  i = 0;
217  firemain ();
218#ifdef LIBCACA
219  caca_draw_bitmap(0, 0, caca_get_width() - 1, caca_get_height() - 1,
220                   caca_bitmap, bitmap);
221  caca_refresh();
222  XSIZ = caca_get_width() * 2;
223  YSIZ = caca_get_height() * 2 - 4;
224#else
225  aa_renderpalette (context, palette, params, 0, 0, aa_scrwidth (context),
226                    aa_scrheight (context));
227  aa_flush (context);
228#endif
229}
230static void
231game (void)
232{
233  int event;
234  gentable ();
235#ifdef LIBCACA
236  while (!(event = caca_get_event(CACA_EVENT_KEY_PRESS)))
237#else
238  while (!(event = aa_getevent (context, 0)) || event == AA_RESIZE)
239#endif
240    {
241      drawfire ();
242    }
243}
244int
245main (int argc, char **argv)
246{
247#ifndef LIBCACA
248  if (!aa_parseoptions (NULL, NULL, &argc, argv) || argc != 1)
249    {
250      printf ("%s", aa_help);
251      exit (1);
252    }
253#endif
254  initialize ();
255#ifndef LIBCACA
256  aa_resizehandler (context, (void *) aa_resize);
257#endif
258  game ();
259  uninitialize ();
260  return 1;
261}
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