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annotate arogue5/maze.c @ 233:0990adf580ee

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Declare some function arguments as const. Some functions, mostly in fight.c, declared variables as pointers to const char but passed them to functions that took pointers to ordinary char. The strings did not actually get modified, so adding 'const' to the function definitions removed the warnings.
author John "Elwin" Edwards
date Sun, 06 Mar 2016 19:32:47 -0500
parents 56e748983fa8
children 0250220d8cdd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * maze
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3 *
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4 * Advanced Rogue
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5 * Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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6 * All rights reserved.
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7 *
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8 * Based on "Super-Rogue"
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9 * Copyright (C) 1984 Robert D. Kindelberger
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10 * All rights reserved.
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11 *
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12 * See the file LICENSE.TXT for full copyright and licensing information.
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13 */
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14
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15 #include <stdlib.h>
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16 #include "curses.h"
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17 #include "rogue.h"
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18
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19 struct cell {
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20 char y_pos;
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21 char x_pos;
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22 };
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23
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24 struct bordercells {
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25 char num_pos; /* number of frontier cells next to you */
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26 struct cell conn[4]; /* the y,x position of above cell */
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27 } border_cells;
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28
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29 static char *frontier,
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30 *bits;
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31 static int maze_lines,
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32 maze_cols;
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33
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34 void draw_maze(void);
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35 int findcells(int y, int x);
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36 char *foffset(int y, int x);
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37 char *moffset(int y, int x);
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38 void rmwall(int newy, int newx, int oldy, int oldx);
63
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39
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40
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41 /*
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42 * crankout:
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43 * Does actual drawing of maze to window
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44 */
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45 void
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46 crankout(void)
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47 {
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48 reg int x, y;
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49
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50 for (y = 0; y < LINES - 3; y++) {
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51 move(y + 1, 0);
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52 for (x = 0; x < COLS - 1; x++) {
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53 if (*moffset(y, x)) { /* here is a wall */
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54 if(y==0 || y==LINES-4) /* top or bottom line */
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55 addch('-');
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56 else if(x==0 || x==COLS-2) /* left | right side */
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57 addch('|');
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58 else if (y % 2 == 0 && x % 2 == 0) {
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59 if(*moffset(y, x-1) || *moffset(y, x+1))
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60 addch('-');
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61 else
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62 addch('|');
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63 }
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64 else if (y % 2 == 0)
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65 addch('-');
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66 else
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67 addch('|');
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68 }
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69 else
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70 addch(FLOOR);
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71 }
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72 }
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73 }
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74
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75 /*
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76 * domaze:
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77 * Draw the maze on this level.
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78 */
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79 void
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80 do_maze(void)
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81 {
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82 reg int least;
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83 reg struct room *rp;
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84 reg struct linked_list *item;
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85 reg struct object *obj;
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86 int cnt;
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87 bool treas;
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88 coord tp;
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89
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90 for (rp = rooms; rp < &rooms[MAXROOMS]; rp++) {
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91 rp->r_flags = ISGONE; /* kill all rooms */
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92 rp->r_fires = NULL; /* no fires */
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93 }
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94 rp = &rooms[0]; /* point to only room */
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95 rp->r_flags = ISDARK; /* mazes always dark */
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96 rp->r_pos.x = 0; /* room fills whole screen */
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97 rp->r_pos.y = 1;
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98 rp->r_max.x = COLS - 1;
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99 rp->r_max.y = LINES - 3;
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100 draw_maze(); /* put maze into window */
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101 /*
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102 * add some gold to make it worth looking for
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103 */