93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
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/**
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* @file
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* Snake-like layout generator.
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* @author peterm@langmuir.eecs.berkeley.edu
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*/
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#include <stdio.h>
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#include <global.h>
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#include <time.h>
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/**
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* Generate a snake-like layout.
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* @param xsize
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* @param ysize
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* layout size.
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* @return
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* generated layout.
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*/
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char **make_snake_layout(int xsize, int ysize) {
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int i, j;
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/* allocate that array, set it up */
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char **maze = (char **)calloc(sizeof(char *), xsize);
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for (i = 0; i < xsize; i++) {
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maze[i] = (char *)calloc(sizeof(char), ysize);
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}
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/* write the outer walls */
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for (i = 0; i < xsize; i++)
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maze[i][0] = maze[i][ysize-1] = '#';
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for (j = 0; j < ysize; j++)
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maze[0][j] = maze[xsize-1][j] = '#';
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/* Bail out if the size is too small to make a snake. */
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if (xsize < 8 || ysize < 8)
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return maze;
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/* decide snake orientation--vertical or horizontal , and
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make the walls and place the doors. */
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if (RANDOM()%2) { /* vertical orientation */
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int n_walls = RANDOM()%((xsize-5)/3)+1;
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int spacing = xsize/(n_walls+1);
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int orientation = 1;
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for (i = spacing; i < xsize-3; i += spacing) {
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if (orientation) {
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for (j = 1; j < ysize-2; j++) {
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maze[i][j] = '#';
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}
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maze[i][j] = 'D';
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} else {
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for (j = 2; j < ysize; j++) {
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maze[i][j] = '#';
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}
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maze[i][1] = 'D';
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}
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orientation ^= 1; /* toggle the value of orientation */
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}
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} else { /* horizontal orientation */
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int n_walls = RANDOM()%((ysize-5)/3)+1;
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int spacing = ysize/(n_walls+1);
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int orientation = 1;
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for (i = spacing; i < ysize-3; i += spacing) {
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if (orientation) {
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for (j = 1; j < xsize-2; j++) {
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maze[j][i] = '#';
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}
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maze[j][i] = 'D';
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} else {
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for (j = 2; j < xsize; j++) {
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maze[j][i] = '#';
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}
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maze[1][i] = 'D';
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}
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orientation ^= 1; /* toggle the value of orientation */
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}
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}
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/* place the exit up/down */
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if (RANDOM()%2) {
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maze[1][1] = '<';
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maze[xsize-2][ysize-2] = '>';
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} else {
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maze[1][1] = '>';
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maze[xsize-2][ysize-2] = '<';
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}
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return maze;
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}
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