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1 | /* |
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2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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3 | * |
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4 | * Copyright (©) 2005,2006,2007,2008,2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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5 | * Copyright (©) Crossfire Development Team (restored, original file without copyright notice) |
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6 | * |
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7 | * Deliantra is free software: you can redistribute it and/or modify it under |
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8 | * the terms of the Affero GNU General Public License as published by the |
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9 | * Free Software Foundation, either version 3 of the License, or (at your |
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10 | * option) any later version. |
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11 | * |
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12 | * This program is distributed in the hope that it will be useful, |
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | * GNU General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the Affero GNU General Public License |
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18 | * and the GNU General Public License along with this program. If not, see |
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19 | * <http://www.gnu.org/licenses/>. |
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20 | * |
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21 | * The authors can be reached via e-mail to <support@deliantra.net> |
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22 | */ |
1 | |
23 | |
2 | /* |
24 | /* |
3 | * Expands a layout by 2x in each dimension. |
25 | * Expands a layout by 2x in each dimension. |
4 | * H. S. Teoh |
26 | * H. S. Teoh |
5 | * -------------------------------------------------------------------------- |
27 | * -------------------------------------------------------------------------- |
6 | * $Id: expand2x.C,v 1.3 2006/09/10 16:06:37 root Exp $ |
28 | * $Id: expand2x.C,v 1.9 2009/11/07 18:32:45 root Exp $ |
7 | * |
29 | * |
8 | * ALGORITHM |
30 | * ALGORITHM |
9 | * |
31 | * |
10 | * ... (TBW) |
32 | * ... (TBW) |
11 | */ |
33 | */ |
12 | |
34 | |
13 | #include <stdlib.h> /* just in case */ |
35 | #include "global.h" |
14 | #include <expand2x.h> /* use compiler to do sanity check */ |
36 | #include "random_map.h" |
15 | |
37 | #include "rproto.h" |
16 | |
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17 | /* PROTOTYPES */ |
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18 | |
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19 | static void expand_misc (char **newlayout, int i, int j, char **layout, int xsize, int ysize); |
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20 | static void expand_wall (char **newlayout, int i, int j, char **layout, int xsize, int ysize); |
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21 | static void expand_door (char **newlayout, int i, int j, char **layout, int xsize, int ysize); |
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22 | |
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23 | |
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24 | /* FUNCTIONS */ |
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25 | |
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26 | char ** |
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27 | expand2x (char **layout, int xsize, int ysize) |
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28 | { |
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29 | int i, j; |
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30 | int nxsize = xsize * 2 - 1; |
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31 | int nysize = ysize * 2 - 1; |
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32 | |
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33 | /* Allocate new layout */ |
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34 | char **newlayout = (char **) calloc (sizeof (char *), nxsize); |
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35 | |
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36 | for (i = 0; i < nxsize; i++) |
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37 | { |
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38 | newlayout[i] = (char *) calloc (sizeof (char), nysize); |
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39 | } |
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40 | |
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41 | for (i = 0; i < xsize; i++) |
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42 | { |
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43 | for (j = 0; j < ysize; j++) |
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44 | { |
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45 | switch (layout[i][j]) |
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46 | { |
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47 | case '#': |
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48 | expand_wall (newlayout, i, j, layout, xsize, ysize); |
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49 | break; |
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50 | case 'D': |
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51 | expand_door (newlayout, i, j, layout, xsize, ysize); |
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52 | break; |
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53 | default: |
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54 | expand_misc (newlayout, i, j, layout, xsize, ysize); |
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55 | } |
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56 | } |
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57 | } |
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58 | |
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59 | /* Dump old layout */ |
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60 | for (i = 0; i < xsize; i++) |
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61 | { |
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62 | free (layout[i]); |
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63 | } |
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64 | free (layout); |
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65 | |
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66 | return newlayout; |
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67 | } |
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68 | |
38 | |
69 | /* Copy the old tile X into the new one at location (i*2, j*2) and |
39 | /* Copy the old tile X into the new one at location (i*2, j*2) and |
70 | * fill up the rest of the 2x2 result with \0: |
40 | * fill up the rest of the 2x2 result with \0: |
71 | * X ---> X \0 |
41 | * X ---> X \0 |
72 | * \0 \0 |
42 | * \0 \0 |
73 | */ |
43 | */ |
74 | static void |
44 | static void |
75 | expand_misc (char **newlayout, int i, int j, char **layout, int xsize, int ysize) |
45 | expand_misc (Layout newlayout, int i, int j, Layout layout) |
76 | { |
46 | { |
77 | newlayout[i * 2][j * 2] = layout[i][j]; |
47 | newlayout[i * 2][j * 2] = layout[i][j]; |
78 | /* (Note: no need to reset rest of 2x2 area to \0 because calloc does that |
48 | /* (Note: no need to reset rest of 2x2 area to \0 because calloc does that |
79 | * for us.) */ |
49 | * for us.) */ |
80 | } |
50 | } |
… | |
… | |
85 | * 2 match on (i, j+1) |
55 | * 2 match on (i, j+1) |
86 | * 4 match on (i+1, j+1) |
56 | * 4 match on (i+1, j+1) |
87 | * and the possible combinations thereof. |
57 | * and the possible combinations thereof. |
88 | */ |
58 | */ |
89 | static int |
59 | static int |
90 | calc_pattern (char ch, char **layout, int i, int j, int xsize, int ysize) |
60 | calc_pattern (char ch, Layout layout, int i, int j) |
91 | { |
61 | { |
92 | int pattern = 0; |
62 | int pattern = 0; |
93 | |
63 | |
94 | if (i + 1 < xsize && layout[i + 1][j] == ch) |
64 | if (i + 1 < layout->w && layout[i + 1][j] == ch) |
95 | pattern |= 1; |
65 | pattern |= 1; |
96 | |
66 | |
97 | if (j + 1 < ysize) |
67 | if (j + 1 < layout->h) |
98 | { |
68 | { |
99 | if (layout[i][j + 1] == ch) |
69 | if (layout[i][j + 1] == ch) |
100 | pattern |= 2; |
70 | pattern |= 2; |
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71 | |
101 | if (i + 1 < xsize && layout[i + 1][j + 1] == ch) |
72 | if (i + 1 < layout->w && layout[i + 1][j + 1] == ch) |
102 | pattern |= 4; |
73 | pattern |= 4; |
103 | } |
74 | } |
104 | |
75 | |
105 | return pattern; |
76 | return pattern; |
106 | } |
77 | } |
… | |
… | |
108 | /* Expand a wall. This function will try to sensibly connect the resulting |
79 | /* Expand a wall. This function will try to sensibly connect the resulting |
109 | * wall to adjacent wall squares, so that the result won't have disconnected |
80 | * wall to adjacent wall squares, so that the result won't have disconnected |
110 | * walls. |
81 | * walls. |
111 | */ |
82 | */ |
112 | static void |
83 | static void |
113 | expand_wall (char **newlayout, int i, int j, char **layout, int xsize, int ysize) |
84 | expand_wall (Layout newlayout, int i, int j, Layout layout) |
114 | { |
85 | { |
115 | int wall_pattern = calc_pattern ('#', layout, i, j, xsize, ysize); |
86 | int wall_pattern = calc_pattern ('#', layout, i, j); |
116 | int door_pattern = calc_pattern ('D', layout, i, j, xsize, ysize); |
87 | int door_pattern = calc_pattern ('D', layout, i, j); |
117 | int both_pattern = wall_pattern | door_pattern; |
88 | int both_pattern = wall_pattern | door_pattern; |
118 | |
89 | |
119 | newlayout[i * 2][j * 2] = '#'; |
90 | newlayout[i * 2][j * 2] = '#'; |
120 | if (i + 1 < xsize) |
91 | |
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92 | if (i + 1 < layout->w) |
121 | { |
93 | { |
122 | if (both_pattern & 1) |
94 | if (both_pattern & 1) |
123 | { /* join walls/doors to the right */ |
95 | { /* join walls/doors to the right */ |
124 | |
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125 | /* newlayout[i*2+1][j*2] = '#'; */ |
96 | /* newlayout[i*2+1][j*2] = '#'; */ |
126 | newlayout[i * 2 + 1][j * 2] = layout[i + 1][j]; |
97 | newlayout[i * 2 + 1][j * 2] = layout[i + 1][j]; |
127 | } |
98 | } |
128 | } |
99 | } |
129 | |
100 | |
130 | if (j + 1 < ysize) |
101 | if (j + 1 < layout->h) |
131 | { |
102 | { |
132 | if (both_pattern & 2) |
103 | if (both_pattern & 2) |
133 | { /* join walls/doors to the bottom */ |
104 | { /* join walls/doors to the bottom */ |
134 | |
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135 | /* newlayout[i*2][j*2+1] = '#'; */ |
105 | /* newlayout[i*2][j*2+1] = '#'; */ |
136 | newlayout[i * 2][j * 2 + 1] = layout[i][j + 1]; |
106 | newlayout[i * 2][j * 2 + 1] = layout[i][j + 1]; |
137 | } |
107 | } |
138 | |
108 | |
139 | if (wall_pattern == 7) |
109 | if (wall_pattern == 7) |
… | |
… | |
147 | /* This function will try to sensibly connect doors so that they meet up with |
117 | /* This function will try to sensibly connect doors so that they meet up with |
148 | * adjacent walls. Note that it will also presumptuously delete (ignore) doors |
118 | * adjacent walls. Note that it will also presumptuously delete (ignore) doors |
149 | * that it doesn't know how to correctly expand. |
119 | * that it doesn't know how to correctly expand. |
150 | */ |
120 | */ |
151 | static void |
121 | static void |
152 | expand_door (char **newlayout, int i, int j, char **layout, int xsize, int ysize) |
122 | expand_door (Layout newlayout, int i, int j, Layout layout) |
153 | { |
123 | { |
154 | int wall_pattern = calc_pattern ('#', layout, i, j, xsize, ysize); |
124 | int wall_pattern = calc_pattern ('#', layout, i, j); |
155 | int door_pattern = calc_pattern ('D', layout, i, j, xsize, ysize); |
125 | int door_pattern = calc_pattern ('D', layout, i, j); |
156 | int join_pattern; |
126 | int join_pattern; |
157 | |
127 | |
158 | /* Doors "like" to connect to walls more than other doors. If there is |
128 | /* Doors "like" to connect to walls more than other doors. If there is |
159 | * a wall and another door, this door will connect to the wall and |
129 | * a wall and another door, this door will connect to the wall and |
160 | * disconnect from the other door. */ |
130 | * disconnect from the other door. */ |
161 | if (wall_pattern & 3) |
131 | if (wall_pattern & 3) |
162 | { |
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163 | join_pattern = wall_pattern; |
132 | join_pattern = wall_pattern; |
164 | } |
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165 | else |
133 | else |
166 | { |
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167 | join_pattern = door_pattern; |
134 | join_pattern = door_pattern; |
168 | } |
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169 | |
135 | |
170 | newlayout[i * 2][j * 2] = 'D'; |
136 | newlayout[i * 2][j * 2] = 'D'; |
171 | if (i + 1 < xsize) |
137 | |
172 | { |
138 | if (i + 1 < layout->w) |
173 | if (join_pattern & 1) |
139 | if (join_pattern & 1) |
174 | { /* there is a door/wall to the right */ |
140 | /* there is a door/wall to the right */ |
175 | newlayout[i * 2 + 1][j * 2] = 'D'; |
141 | newlayout[i * 2 + 1][j * 2] = 'D'; |
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142 | |
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143 | if (j + 1 < layout->h) |
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144 | if (join_pattern & 2) |
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145 | /* there is a door/wall below */ |
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146 | newlayout[i * 2][j * 2 + 1] = 'D'; |
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147 | } |
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148 | |
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149 | void |
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150 | expand2x (Layout layout) |
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151 | { |
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152 | Layout newlayout (layout->w * 2 - 1, layout->h * 2 - 1); |
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153 | newlayout->clear (); |
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154 | |
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155 | for (int i = 0; i < layout->w; i++) |
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156 | for (int j = 0; j < layout->h; j++) |
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157 | switch (layout[i][j]) |
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158 | { |
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159 | case '#': expand_wall (newlayout, i, j, layout); break; |
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160 | case 'D': expand_door (newlayout, i, j, layout); break; |
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161 | default: expand_misc (newlayout, i, j, layout); break; |
176 | } |
162 | } |
177 | } |
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178 | |
163 | |
179 | if (j + 1 < ysize) |
164 | layout.swap (newlayout); |
180 | { |
165 | newlayout.free (); |
181 | if (join_pattern & 2) |
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182 | { /* there is a door/wall below */ |
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183 | newlayout[i * 2][j * 2 + 1] = 'D'; |
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184 | } |
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185 | } |
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186 | } |
166 | } |
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167 | |