server/random_maps/room_gen_spiral.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 *
 * Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
 * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * Copyright (©) 1994 Mark Wedel
 * Copyright (©) 1992 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>
 */

/*  The onion room generator:
Onion rooms are like this:

char **map_gen_spiral(int xsize, int ysize, int option);
*/

#include <global.h>
#include <rmg.h>
#include <rproto.h>

#define RANDOM_OPTIONS 0        /* Pick random options below */
#define REGULAR_SPIRAL 1        /* Regular spiral--distance increases constantly */
#define FINE_SPIRAL 2           /* uses the min. separation:  most coiling */
#define FIT_SPIRAL 4            /* scale to a rectangular region, not square */
#define MAX_SPIRAL_OPT 8        /* this should be 2x the last real option */

#define MINDIST 3

#define MAX_FINE .454545

void
map_gen_spiral (layout &maze, int option)
{
  float parm = 0;
  float x = 0, y = 0;
  int ic, jc;
  float SizeX, SizeY;
  float xscale, yscale;

  /* slightly easier to fill and then cut */
  maze.fill ('#');

  int xsize = maze.w;
  int ysize = maze.h;

  ic = xsize / 2;
  jc = ysize / 2;
  SizeX = xsize / 2 - 2;
  SizeY = ysize / 2 - 2;

  /* select random options if necessary */
  if (option == 0)
    option = rmg_rndm (MAX_SPIRAL_OPT);

  /* the order in which these are evaluated matters */

  /* the following two are mutually exclusive.
     pick one if they're both set. */
  if ((option & REGULAR_SPIRAL) && (option & FIT_SPIRAL))
    {
      /* unset REGULAR_SPIRAL half the time */
      if (rmg_rndm (2) && (option & REGULAR_SPIRAL))
        option -= REGULAR_SPIRAL;
      else
        option -= FIT_SPIRAL;
    }

  xscale = yscale = MAX_FINE;   /* fine spiral */

  /* choose the spiral pitch */
  if (!(option & FINE_SPIRAL))
    {
      float pitch = (rmg_rndm (5)) / 10. + 10. / 22.;

      xscale = yscale = pitch;
    }

  if ((option & FIT_SPIRAL) && (xsize != ysize))
    {
      if (xsize > ysize)
        xscale *= (float) xsize / (float) ysize;
      else
        yscale *= (float) ysize / (float) xsize;
    }

  if (option & REGULAR_SPIRAL)
    {
      float scale = min (xscale, yscale);

      xscale = yscale = scale;
    }

  /* cut out the spiral */
  while ((fabs (x) < SizeX) && (fabs (y) < SizeY))
    {
      x = parm * cos (parm) * xscale;
      y = parm * sin (parm) * yscale;
      maze[int (ic + x)][int (jc + y)] = '\0';
      parm += 0.01;
    }

  maze[int (ic + x + 0.5)][int (jc + y + 0.5)] = '<';

  /* cut out the center in a 2x2 and place the center and downexit */
  maze[ic][jc + 1] = '>';
  maze[ic][jc] = 'C';
}

Revision:	1.31
Committed:	Sat Nov 17 23:40:02 2018 UTC (5 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.30:	+1 -0 lines
Log Message:	copyright update 2018
#	Content
1	/*
2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*
4	* Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
5	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
6	* Copyright (©) 1994 Mark Wedel
7	* Copyright (©) 1992 Frank Tore Johansen
8	*
9	* Deliantra is free software: you can redistribute it and/or modify it under
10	* the terms of the Affero GNU General Public License as published by the
11	* Free Software Foundation, either version 3 of the License, or (at your
12	* 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
17	* GNU General Public License for more details.
18	*
19	* You should have received a copy of the Affero GNU General Public License
20	* and the GNU General Public License along with this program. If not, see
21	* <http://www.gnu.org/licenses/>.
22	*
23	* The authors can be reached via e-mail to <support@deliantra.net>
24	*/
25
26	/* The onion room generator:
27	Onion rooms are like this:
28
29	char **map_gen_spiral(int xsize, int ysize, int option);
30	*/
31
32	#include <global.h>
33	#include <rmg.h>
34	#include <rproto.h>
35
36	#define RANDOM_OPTIONS 0 /* Pick random options below */
37	#define REGULAR_SPIRAL 1 /* Regular spiral--distance increases constantly */
38	#define FINE_SPIRAL 2 /* uses the min. separation: most coiling */
39	#define FIT_SPIRAL 4 /* scale to a rectangular region, not square */
40	#define MAX_SPIRAL_OPT 8 /* this should be 2x the last real option */
41
42	#define MINDIST 3
43
44	#define MAX_FINE .454545
45
46	void
47	map_gen_spiral (layout &maze, int option)
48	{
49	float parm = 0;
50	float x = 0, y = 0;
51	int ic, jc;
52	float SizeX, SizeY;
53	float xscale, yscale;
54
55	/* slightly easier to fill and then cut */
56	maze.fill ('#');
57
58	int xsize = maze.w;
59	int ysize = maze.h;
60
61	ic = xsize / 2;
62	jc = ysize / 2;
63	SizeX = xsize / 2 - 2;
64	SizeY = ysize / 2 - 2;
65
66	/* select random options if necessary */
67	if (option == 0)
68	option = rmg_rndm (MAX_SPIRAL_OPT);
69
70	/* the order in which these are evaluated matters */
71
72	/* the following two are mutually exclusive.
73	pick one if they're both set. */
74	if ((option & REGULAR_SPIRAL) && (option & FIT_SPIRAL))
75	{
76	/* unset REGULAR_SPIRAL half the time */
77	if (rmg_rndm (2) && (option & REGULAR_SPIRAL))
78	option -= REGULAR_SPIRAL;
79	else
80	option -= FIT_SPIRAL;
81	}
82
83	xscale = yscale = MAX_FINE; /* fine spiral */
84
85	/* choose the spiral pitch */
86	if (!(option & FINE_SPIRAL))
87	{
88	float pitch = (rmg_rndm (5)) / 10. + 10. / 22.;
89
90	xscale = yscale = pitch;
91	}
92
93	if ((option & FIT_SPIRAL) && (xsize != ysize))
94	{
95	if (xsize > ysize)
96	xscale *= (float) xsize / (float) ysize;
97	else
98	yscale *= (float) ysize / (float) xsize;
99	}
100
101	if (option & REGULAR_SPIRAL)
102	{
103	float scale = min (xscale, yscale);
104
105	xscale = yscale = scale;
106	}
107
108	/* cut out the spiral */
109	while ((fabs (x) < SizeX) && (fabs (y) < SizeY))
110	{
111	x = parm * cos (parm) * xscale;
112	y = parm * sin (parm) * yscale;
113	maze[int (ic + x)][int (jc + y)] = '\0';
114	parm += 0.01;
115	}
116
117	maze[int (ic + x + 0.5)][int (jc + y + 0.5)] = '<';
118
119	/* cut out the center in a 2x2 and place the center and downexit */
120	maze[ic][jc + 1] = '>';
121	maze[ic][jc] = 'C';
122	}
123