Crossfire Server, Trunk  R213250
snake.c
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1 /*
2  * Crossfire -- cooperative multi-player graphical RPG and adventure game
3  *
4  * Copyright (c) 1999-2013 Mark Wedel and the Crossfire Development Team
5  * Copyright (c) 1992 Frank Tore Johansen
6  *
7  * Crossfire is free software and comes with ABSOLUTELY NO WARRANTY. You are
8  * welcome to redistribute it under certain conditions. For details, please
9  * see COPYING and LICENSE.
10  *
11  * The authors can be reached via e-mail at <crossfire@metalforge.org>.
12  */
13 
20 #include "global.h"
21 
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <time.h>
25 
34 char **make_snake_layout(int xsize, int ysize, int _unused_option, int _unused_layers)
35 {
36  int i, j;
37 
38  (void)_unused_option;
39  (void)_unused_layers;
40 
41  /* allocate that array, set it up */
42  char **maze = (char **)calloc(sizeof(char *), xsize);
43  for (i = 0; i < xsize; i++) {
44  maze[i] = (char *)calloc(sizeof(char), ysize);
45  }
46 
47  /* write the outer walls */
48  for (i = 0; i < xsize; i++) {
49  maze[i][0] = maze[i][ysize-1] = '#';
50  }
51  for (j = 0; j < ysize; j++) {
52  maze[0][j] = maze[xsize-1][j] = '#';
53  }
54 
55  /* Bail out if the size is too small to make a snake. */
56  if (xsize < 8 || ysize < 8) {
57  return maze;
58  }
59 
60  /* decide snake orientation--vertical or horizontal , and
61  make the walls and place the doors. */
62 
63  if (RANDOM()%2) { /* vertical orientation */
64  int n_walls = RANDOM()%((xsize-5)/3)+1;
65  int spacing = xsize/(n_walls+1);
66  int orientation = 1;
67 
68  for (i = spacing; i < xsize-3; i += spacing) {
69  if (orientation) {
70  for (j = 1; j < ysize-2; j++) {
71  maze[i][j] = '#';
72  }
73  maze[i][j] = 'D';
74  } else {
75  for (j = 2; j < ysize; j++) {
76  maze[i][j] = '#';
77  }
78  maze[i][1] = 'D';
79  }
80  orientation ^= 1; /* toggle the value of orientation */
81  }
82  } else { /* horizontal orientation */
83  int n_walls = RANDOM()%((ysize-5)/3)+1;
84  int spacing = ysize/(n_walls+1);
85  int orientation = 1;
86 
87  for (i = spacing; i < ysize-3; i += spacing) {
88  if (orientation) {
89  for (j = 1; j < xsize-2; j++) {
90  maze[j][i] = '#';
91  }
92  maze[j][i] = 'D';
93  } else {
94  for (j = 2; j < xsize; j++) {
95  maze[j][i] = '#';
96  }
97  maze[1][i] = 'D';
98  }
99  orientation ^= 1; /* toggle the value of orientation */
100  }
101  }
102 
103  /* place the exit up/down */
104  if (RANDOM()%2) {
105  maze[1][1] = '<';
106  maze[xsize-2][ysize-2] = '>';
107  } else {
108  maze[1][1] = '>';
109  maze[xsize-2][ysize-2] = '<';
110  }
111 
112  return maze;
113 }
char ** make_snake_layout(int xsize, int ysize, int _unused_option, int _unused_layers)
Definition: snake.c:34
#define RANDOM()
Definition: define.h:681