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elmex |
1.1 |
/* |
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root |
1.11 |
* This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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1.25 |
* |
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root |
1.27 |
* Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team |
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root |
1.26 |
* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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1.18 |
* Copyright (©) 2001 Mark Wedel & Crossfire Development Team |
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* Copyright (©) 1992 Frank Tore Johansen |
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root |
1.25 |
* |
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1.17 |
* Deliantra is free software: you can redistribute it and/or modify it under |
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* the terms of the Affero GNU General Public License as published by the |
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* Free Software Foundation, either version 3 of the License, or (at your |
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* option) any later version. |
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1.25 |
* |
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pippijn |
1.7 |
* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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1.10 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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pippijn |
1.7 |
* GNU General Public License for more details. |
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root |
1.25 |
* |
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root |
1.17 |
* You should have received a copy of the Affero GNU General Public License |
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* and the GNU General Public License along with this program. If not, see |
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* <http://www.gnu.org/licenses/>. |
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root |
1.25 |
* |
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root |
1.11 |
* The authors can be reached via e-mail to <support@deliantra.net> |
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pippijn |
1.7 |
*/ |
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elmex |
1.1 |
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/* peterm@langmuir.eecs.berkeley.edu: this function generates a random |
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root |
1.21 |
snake-type maze. |
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elmex |
1.1 |
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input: xsize, ysize; |
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output: a char** array with # and . for closed and open respectively. |
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a char value of 0 represents a blank space: a '#' is |
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a wall. |
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*/ |
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#include <global.h> |
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root |
1.22 |
#include <rmg.h> |
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root |
1.12 |
#include "rproto.h" |
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elmex |
1.1 |
|
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/* These are some helper functions which help with |
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manipulating a centered onion and turning it into |
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a square spiral */ |
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root |
1.13 |
void |
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root |
1.21 |
make_square_spiral_layout (layout &maze, int options) |
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root |
1.2 |
{ |
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elmex |
1.1 |
/* generate and allocate a doorless, centered onion */ |
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root |
1.13 |
map_gen_onion (maze, RMOPT_CENTERED | RMOPT_NO_DOORS, 0); |
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root |
1.20 |
int xsize = maze.w; |
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int ysize = maze.h; |
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elmex |
1.1 |
|
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root |
1.21 |
/* find the maze center. */ |
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root |
1.15 |
int cx = 0; |
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int cy = 0; |
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for (int i = 0; i < xsize; i++) |
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for (int j = 0; j < ysize; j++) |
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root |
1.9 |
if (maze[i][j] == 'C') |
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{ |
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cx = i; |
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cy = j; |
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root |
1.15 |
break; |
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root |
1.9 |
} |
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root |
1.15 |
int tx = cx; |
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int ty = cy; |
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root |
1.9 |
for (;;) |
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root |
1.2 |
{ |
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root |
1.15 |
/* this starts from within a centered onion layer (or between two layers), |
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and looks up until it finds a wall, and then looks right until it |
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finds a vertical wall, i.e., the corner. It sets tx and ty to that. |
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it also starts from tx and ty. */ |
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--ty; |
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/* find the top wall. */ |
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while (maze[tx][ty] != '#') |
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--ty; |
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/* proceed right until a corner is detected */ |
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while (maze[tx][ty + 1] != '#') |
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++tx; |
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root |
1.2 |
|
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root |
1.15 |
/* tx and ty should now be the top-right corner of the onion layer */ |
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root |
1.2 |
if (ty < 2 || tx < 2 || tx > xsize - 2 || ty > ysize - 2) |
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break; |
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root |
1.9 |
|
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root |
1.2 |
make_wall (maze, tx, ty - 1, 1); /* make a vertical wall with a door */ |
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maze[tx][ty - 1] = '#'; /* convert the door that make_wall puts here to a wall */ |
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maze[tx - 1][ty] = 'D'; /* make a doorway out of this layer */ |
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elmex |
1.1 |
|
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root |
1.2 |
/* walk left until we find the top-left corner */ |
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root |
1.15 |
while (tx > 2 && maze[tx - 1][ty]) |
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--tx; |
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elmex |
1.1 |
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root |
1.2 |
make_wall (maze, tx - 1, ty, 0); /* make a horizontal wall with a door */ |
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elmex |
1.1 |
|
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root |
1.2 |
/* walk down until we find the bottom-left corner */ |
100 |
root |
1.15 |
while (ty + 1 < ysize && maze[tx][ty + 1]) |
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++ty; |
102 |
elmex |
1.1 |
|
103 |
root |
1.2 |
make_wall (maze, tx, ty + 1, 1); /* make a vertical wall with a door */ |
104 |
elmex |
1.1 |
|
105 |
root |
1.2 |
/* walk rightuntil we find the bottom-right corner */ |
106 |
root |
1.15 |
while (tx + 1 < xsize && maze[tx + 1][ty]) |
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++tx; |
108 |
elmex |
1.1 |
|
109 |
root |
1.2 |
make_wall (maze, tx + 1, ty, 0); /* make a horizontal wall with a door */ |
110 |
root |
1.15 |
++tx; /* set up for next layer. */ |
111 |
root |
1.2 |
} |
112 |
elmex |
1.1 |
|
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/* place the exits. */ |
114 |
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115 |
root |
1.16 |
if (rmg_rndm (2)) |
116 |
root |
1.2 |
{ |
117 |
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maze[cx][cy] = '>'; |
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maze[xsize - 2][1] = '<'; |
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} |
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else |
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{ |
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maze[cx][cy] = '<'; |
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maze[xsize - 2][1] = '>'; |
124 |
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} |
125 |
elmex |
1.1 |
} |
126 |
root |
1.9 |
|