server/random_maps/square_spiral.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 * 
 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * Copyright (©) 2001,2007 Mark Wedel & Crossfire Development Team
 * Copyright (©) 1992,2007 Frank Tore Johansen
 * 
 * Deliantra is free software: you can redistribute it and/or modify it under
 * the terms of the Affero GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the Affero GNU General Public License
 * and the GNU General Public License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 * 
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

/* peterm@langmuir.eecs.berkeley.edu:  this function generates a random
snake-type layout.

input:  xsize, ysize;
output:  a char** array with # and . for closed and open respectively.

a char value of 0 represents a blank space:  a '#' is
a wall.

*/

#include <global.h>

#include "random_map.h"
#include "rproto.h"

/* These are some helper functions which help with
   manipulating a centered onion and turning it into
   a square spiral */
void
make_square_spiral_layout (Layout maze, int options)
{
  /* generate and allocate a doorless, centered onion */
  map_gen_onion (maze, RMOPT_CENTERED | RMOPT_NO_DOORS, 0);

  int xsize = maze->w;
  int ysize = maze->h;

  /* find the layout center.  */
  int cx = 0;
  int cy = 0;
  for (int i = 0; i < xsize; i++)
    for (int j = 0; j < ysize; j++)
      if (maze[i][j] == 'C')
        {
          cx = i;
          cy = j;
          break;
        }

  int tx = cx;
  int ty = cy;
  for (;;)
    {
      /* this starts from within a centered onion layer (or between two layers),
         and looks up until it finds a wall, and then looks right until it
         finds a vertical wall, i.e., the corner.  It sets tx and ty to that.
         it also starts from tx and ty. */
      --ty;

      /* find the top wall. */
      while (maze[tx][ty] != '#')
        --ty;

      /* proceed right until a corner is detected */
      while (maze[tx][ty + 1] != '#')
        ++tx;

      /* tx and ty should now be the top-right corner of the onion layer */
      if (ty < 2 || tx < 2 || tx > xsize - 2 || ty > ysize - 2)
        break;

      make_wall (maze, tx, ty - 1, 1);  /* make a vertical wall with a door */

      maze[tx][ty - 1] = '#';   /* convert the door that make_wall puts here to a wall */
      maze[tx - 1][ty] = 'D';   /* make a doorway out of this layer */

      /* walk left until we find the top-left corner */
      while (tx > 2 && maze[tx - 1][ty])
        --tx;

      make_wall (maze, tx - 1, ty, 0);  /* make a horizontal wall with a door */

      /* walk down until we find the bottom-left corner */
      while (ty + 1 < ysize && maze[tx][ty + 1])
        ++ty;

      make_wall (maze, tx, ty + 1, 1);  /* make a vertical wall with a door */

      /* walk rightuntil we find the bottom-right corner */
      while (tx + 1 < xsize && maze[tx + 1][ty])
        ++tx;

      make_wall (maze, tx + 1, ty, 0);  /* make a horizontal wall with a door */
      ++tx;                     /* set up for next layer. */
    }

  /* place the exits.  */

  if (rmg_rndm (2))
    {
      maze[cx][cy] = '>';
      maze[xsize - 2][1] = '<';
    }
  else
    {
      maze[cx][cy] = '<';
      maze[xsize - 2][1] = '>';
    }
}

Revision:	1.17
Committed:	Mon Oct 12 14:00:58 2009 UTC (14 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_82, rel-2_81, rel-2_90, rel-2_92, rel-2_93
Changes since 1.16:	+7 -6 lines
Log Message:	clarify license
#	User	Rev	Content
1	elmex	1.1	/*
2	root	1.11	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	pippijn	1.7	*
4	root	1.12	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	root	1.10	* Copyright (©) 2001,2007 Mark Wedel & Crossfire Development Team
6			* Copyright (©) 1992,2007 Frank Tore Johansen
7	pippijn	1.7	*
8	root	1.17	* Deliantra is free software: you can redistribute it and/or modify it under
9			* the terms of the Affero GNU General Public License as published by the
10			* Free Software Foundation, either version 3 of the License, or (at your
11			* option) any later version.
12	pippijn	1.7	*
13			* This program is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	root	1.10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	pippijn	1.7	* GNU General Public License for more details.
17			*
18	root	1.17	* You should have received a copy of the Affero GNU General Public License
19			* and the GNU General Public License along with this program. If not, see
20			* <http://www.gnu.org/licenses/>.
21	root	1.10	*
22	root	1.11	* The authors can be reached via e-mail to <support@deliantra.net>
23	pippijn	1.7	*/
24	elmex	1.1
25			/* peterm@langmuir.eecs.berkeley.edu: this function generates a random
26			snake-type layout.
27
28			input: xsize, ysize;
29			output: a char** array with # and . for closed and open respectively.
30
31			a char value of 0 represents a blank space: a '#' is
32			a wall.
33
34			*/
35
36			#include <global.h>
37
38	root	1.12	#include "random_map.h"
39			#include "rproto.h"
40	elmex	1.1
41			/* These are some helper functions which help with
42			manipulating a centered onion and turning it into
43			a square spiral */
44	root	1.13	void
45	root	1.14	make_square_spiral_layout (Layout maze, int options)
46	root	1.2	{
47	elmex	1.1	/* generate and allocate a doorless, centered onion */
48	root	1.13	map_gen_onion (maze, RMOPT_CENTERED \| RMOPT_NO_DOORS, 0);
49
50			int xsize = maze->w;
51			int ysize = maze->h;
52	elmex	1.1
53			/* find the layout center. */
54	root	1.15	int cx = 0;
55			int cy = 0;
56			for (int i = 0; i < xsize; i++)
57			for (int j = 0; j < ysize; j++)
58	root	1.9	if (maze[i][j] == 'C')
59			{
60			cx = i;
61			cy = j;
62	root	1.15	break;
63	root	1.9	}
64
65	root	1.15	int tx = cx;
66			int ty = cy;
67	root	1.9	for (;;)
68	root	1.2	{
69	root	1.15	/* this starts from within a centered onion layer (or between two layers),
70			and looks up until it finds a wall, and then looks right until it
71			finds a vertical wall, i.e., the corner. It sets tx and ty to that.
72			it also starts from tx and ty. */
73			--ty;
74
75			/* find the top wall. */
76			while (maze[tx][ty] != '#')
77			--ty;
78
79			/* proceed right until a corner is detected */
80			while (maze[tx][ty + 1] != '#')
81			++tx;
82	root	1.2
83	root	1.15	/* tx and ty should now be the top-right corner of the onion layer */
84	root	1.2	if (ty < 2 \|\| tx < 2 \|\| tx > xsize - 2 \|\| ty > ysize - 2)
85			break;
86	root	1.9
87	root	1.2	make_wall (maze, tx, ty - 1, 1); /* make a vertical wall with a door */
88
89			maze[tx][ty - 1] = '#'; /* convert the door that make_wall puts here to a wall */
90			maze[tx - 1][ty] = 'D'; /* make a doorway out of this layer */
91	elmex	1.1
92	root	1.2	/* walk left until we find the top-left corner */
93	root	1.15	while (tx > 2 && maze[tx - 1][ty])
94			--tx;
95	elmex	1.1
96	root	1.2	make_wall (maze, tx - 1, ty, 0); /* make a horizontal wall with a door */
97	elmex	1.1
98	root	1.2	/* walk down until we find the bottom-left corner */
99	root	1.15	while (ty + 1 < ysize && maze[tx][ty + 1])
100			++ty;
101	elmex	1.1
102	root	1.2	make_wall (maze, tx, ty + 1, 1); /* make a vertical wall with a door */
103	elmex	1.1
104	root	1.2	/* walk rightuntil we find the bottom-right corner */
105	root	1.15	while (tx + 1 < xsize && maze[tx + 1][ty])
106			++tx;
107	elmex	1.1
108	root	1.2	make_wall (maze, tx + 1, ty, 0); /* make a horizontal wall with a door */
109	root	1.15	++tx; /* set up for next layer. */
110	root	1.2	}
111	elmex	1.1
112			/* place the exits. */
113
114	root	1.16	if (rmg_rndm (2))
115	root	1.2	{
116			maze[cx][cy] = '>';
117			maze[xsize - 2][1] = '<';
118			}
119			else
120			{
121			maze[cx][cy] = '<';
122			maze[xsize - 2][1] = '>';
123			}
124	elmex	1.1	}
125	root	1.9