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/libs/ -> map_util.php (source)

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1 <?PHP
2 /**
3 * Some utilities to deal with the map data
4 */
5
6 /**
7 * Convert a encoded map string into a 2D array.
8 *
9 * @param string $str the encoded map data
10 * @return array the 2D map
11 */
12 function map_extract($str)
13 {
14 $map=array();
15 $a=0;
16 $b=0;
17 $p=0;
18
19 for($i=0;$i < strlen($str);)
20 {
21 $c=substr($str,$i,1);
22 if($c == '-')
23 {
24 $i++;
25 $l='';
26 for(;$i < strlen($str);$i++)
27 {
28 $c=substr($str,$i,1);
29 if(ord($c) >= 48 && ord($c) <= 57)
30 {
31 $l.=$c;
32 continue;
33 }
34 else
35 break;
36 }
37 $nb=$l+0;
38 $v=(ord(substr($str,$i,1))-97)*26+(ord(substr($str,$i+1,1))-97);
39 for($j=0;$j < $nb;$j++)
40 {
41 $map[$a][$b]=$v;
42 $a++;
43 if($a >= 100)
44 {
45 $a=0;
46 $b++;
47 }
48 }
49 $i+=2;
50 }
51 else
52 {
53 $v=(ord(substr($str,$i,1))-97)*26+(ord(substr($str,$i+1,1))-97);
54 $map[$a][$b]=$v;
55 $a++;
56 if($a >= 100)
57 {
58 $a=0;
59 $b++;
60 }
61 $i+=2;
62 }
63 }
64 return $map;
65 }
66
67 /**
68 * Convert a 2D map array into a encoded map string.
69 *
70 * @param array $map
71 * @return string
72 */
73 function map2str($map)
74 {
75 $str="";
76 $oldcell=$map[0][0];
77 $nb=0;
78
79 for($y=0;$y < 100;$y++)
80 {
81 for($x=0;$x < 100;$x++)
82 {
83 if($map[$x][$y] == $oldcell)
84 $nb++;
85 else
86 {
87 if($nb > 1)
88 $str.="-".$nb.chr(floor($oldcell/26)+97).chr(($oldcell%26)+97);
89 else
90 $str.=chr(floor($oldcell/26)+97).chr(($oldcell%26)+97);
91 $nb=1;
92 $oldcell=$map[$x][$y];
93 }
94 }
95 }
96
97 // Add the remaining...
98 if($nb > 0)
99 {
100 if($nb > 1)
101 $str.="-".$nb.chr(floor($oldcell/26)+97).chr(($oldcell%26)+97);
102 else
103 $str.=chr(floor($oldcell/26)+97).chr(($oldcell%26)+97);
104 }
105
106 return $str;
107 }
108
109 /**
110 * Run length encode the encoded map string. This saves space on
111 * the database as well as network during the transfer at
112 * the cost of some CPU.
113 *
114 * @param string $str
115 * @return string
116 */
117 function lenght_code($str)
118 {
119 if(strpos($str,"-") !== false) // Already compressed, skip this step.
120 return $str;
121 $data=array();
122 for($p=0;$p < strlen($str);$p+=2)
123 {
124 if(substr($str,$p,1) == "")
125 $n=0;
126 else
127 $n=(ord(substr($str,$p,1))-97)*26+(ord(substr($str,$p+1,1))-97);
128 $data[]=$n;
129 }
130
131 $res="";
132 for($i=0;$i < count($data);)
133 {
134 $d=$data[$i];
135 $n=0;
136 for($j=$i;$j < count($data);$j++)
137 {
138 if($data[$j] != $d)
139 break;
140 $n++;
141 }
142 if($n > 2)
143 {
144 $res.="-".$n.chr(floor($d/26)+97).chr(($d%26)+97);
145 $i+=$n;
146 }
147 else
148 {
149 $res.=chr(floor($d/26)+97).chr(($d%26)+97);
150 $i++;
151 }
152 }
153 return $res;
154 }
155
156 /**
157 * Determine is a cell type is walkable or not.
158 *
159 * @param integer $type
160 * @param boolean $boat
161 * @return boolean
162 */
163 function check_walkable_map($type,$boat = false)
164 {
165 global $objwalk,$bgwalk,$basedir;
166
167 if(!isset($bgwalk))
168 {
169 if(file_exists("$basedir/libs/walkable.php"))
170 include_once "$basedir/libs/walkable.php";
171 else
172 {
173 $objwalk=str_pad("",600,"Y");
174 $bgwalk=str_pad("",600,"Y");
175 }
176 }
177
178 if($boat == true && $type >= 52 && $type <= 64) // Water
179 return true;
180 if($boat == true && $type >= 121 && $type <= 132) // Ice & Water
181 return true;
182 if($flagboat == true && $type >= 165 && $type <= 172) // Ice & Water & Sand
183 return true;
184
185 if(substr($bgwalk,$type,1) == "N")
186 return false;
187 return true;
188 }
189
190 /**
191 * retreives the current player location and returns it in the global variables sx,sy;
192 *
193 */
194 function retreive_loc()
195 {
196 global $uservals,$db,$sx,$sy,$userid;
197
198 $mapstr="";
199 if($uservals["PREVLOC"] <> "")
200 $_GET["PREVLOC"]=$uservals["PREVLOC"];
201
202 if($_GET["X"] != "" && $_GET["Y"] != "")
203 {
204 $sx=$_GET["X"];
205 $sy=$_GET["Y"];
206 $db->Execute("UPDATE PLAYER SET MAPX=$sx, MAPY=$sy WHERE ID = $userid");
207 }
208 else if(($uservals['LOCATION']+0) < 0 && $_GET["PREVLOC"] <> "")
209 {
210 $sx=$sy=-1;
211 $sql="SELECT OBJDATA,MAPDATA FROM PLAYER_MAP WHERE USERID=$userid AND LEVEL = ".(-$uservals['LOCATION']);
212 $r=$db->Execute($sql);
213 $objstr=$r->fields[0];
214 $mapstr=$r->fields[1];
215 $r->Close();
216 $obj=map_extract($objstr);
217 $p=0;
218 for($j=0;$j < 100;$j++) // Convert the string into the map
219 {
220 for($i=0;$i < 100;$i++)
221 {
222 $n=$obj[$i][$j];
223 if(($n == 114 || $n == 118) && $_GET["DIR"] == "DOWN")
224 {
225 $sx=$i;
226 $sy=$j;
227 break;
228 }
229 if(($n == 115 || $n == 117) && $_GET["DIR"] == "UP")
230 {
231 $sx=$i;
232 $sy=$j;
233 break;
234 }
235 $p+=2;
236 }
237 if($sx != -1)
238 break;
239 }
240 if($sx == -1)
241 $sx=$sy=1;
242 $db->Execute("UPDATE PLAYER SET MAPX=$sx, MAPY=$sy WHERE ID = $userid");
243 }
244 else if($_GET["PREVLOC"] <> "" && $_GET["X"] <> "")
245 {
246 $sx=$_GET["X"];
247 $sy=$_GET["Y"];
248 $db->Execute("UPDATE PLAYER SET MAPX=$sx, MAPY=$sy WHERE ID = $userid");
249 }
250 else if($_GET["PREVLOC"] <> "")
251 {
252 if($_GET["X"] != "")
253 $sql="SELECT X,Y FROM MAPLINKS WHERE MAPID = {$uservals['LOCATION']} AND NEWLOC = {$_GET['PREVLOC']} AND X = ".$_GET["X"]." AND Y = ".$_GET["Y"];
254 else
255 $sql="SELECT X,Y FROM MAPLINKS WHERE MAPID = {$uservals['LOCATION']} AND NEWLOC = {$_GET['PREVLOC']}";
256 $r=$db->Execute($sql);
257 if($r->EOF)
258 {
259 $r->Close();
260 $db->Close();
261 echo "WHERE DO YOU COME FROM ?\n";
262 die();
263 }
264 $sx=$r->fields[0]+0;
265 $sy=$r->fields[1]+0;
266 $r->Close();
267 $db->Execute("UPDATE PLAYER SET MAPX=$sx, MAPY=$sy WHERE ID = $userid");
268 }
269 else
270 {
271 $sx=$uservals["MAPX"];
272 $sy=$uservals["MAPY"];
273 }
274
275 if(($uservals["LOCATION"]+0) < 0 && $mapstr == "")
276 {
277 $sql="SELECT MAPDATA FROM PLAYER_MAP WHERE USERID=$userid AND LEVEL = ".(-$uservals['LOCATION']);
278 $r=$db->Execute($sql);
279 $mapstr=$r->fields[0];
280 $r->Close();
281 }
282 else if(($uservals["LOCATION"]+0) > 0 && $mapstr == "")
283 {
284 $sql="SELECT MAPDATA FROM MAPS WHERE ID = ".$uservals['LOCATION'];
285 $r=$db->Execute($sql);
286 $mapstr=$r->fields[0];
287 $r->Close();
288 }
289 $map=map_extract($mapstr);
290 $boat=false;
291 if(inventory_check(4051) > 0 || inventory_check(4055) > 0)
292 $boat=true;
293 if(check_walkable_map($map[$sx][$sy],$boat) == false) // Some error occured here...
294 {
295 activity_performed(3);
296 $db->Execute("UPDATE PLAYER SET LOCATION=RESURECT WHERE ID = $userid");
297 ob_end_clean();
298 echo "Wrong position in the map.<BR>\n";
299 echo "[<A HREF=game.php>Mmmmm....</A>]\n";
300 $db->Close();
301 exit;
302 }
303 }
304
305 /**
306 * Insert an object on the map... used for a daily unique object.
307 *
308 * @param unknown_type $objid
309 */
310 function unique_place($objid)
311 {
312 global $db;
313
314 $maps=array(8,9,17,21,42);
315 $mapid=$maps[mt_rand(0,count($maps)-1)];
316 $r=$db->Execute("SELECT MAPDATA,OBJECTDATA FROM MAPS WHERE ID = $mapid");
317 $map=map_extract($r->fields[0]);
318 $obj=map_extract($r->fields[1]);
319 $r->Close();
320
321 while(true)
322 {
323 $x=mt_rand(1,98);
324 $y=mt_rand(1,98);
325
326 if(check_walkable_map($map[$x][$y]) == true && $obj[$x][$y] == 0)
327 break;
328 }
329 $db->Execute("DELETE FROM UNIQUE_ITEMS WHERE OBJECTID=$objid");
330 $db->Execute("INSERT INTO UNIQUE_ITEMS(MAPID,OBJECTID,X,Y) VALUES($mapid,$objid,$x,$y)");
331 }
332
333 /**
334 * Returns the link to go to a neirboor map locations
335 *
336 * @param integer $x
337 * @param integer $y
338 * @return string
339 */
340 function grid_link($x,$y)
341 {
342 global $db;
343 $r=$db->Execute("SELECT ID FROM MAP_GRID WHERE X = $x AND Y = $y");
344 $str="game.php?NEWLOC=".$r->fields[0];
345 $r->Close();
346 return $str;
347 }
348
349 /**
350 * Returns the number of cells with a given type
351 *
352 * @param array $map
353 * @param integer $type
354 * @return integer
355 */
356 function map_count($map,$type)
357 {
358 if(is_array($type))
359 $types=$type;
360 else
361 $types[]=$type;
362
363 $nb=0;
364 for($i=0;$i < 99;$i++)
365 for($j=0;$j < 99;$j++)
366 if(in_array($map[$i][$j],$types))
367 $nb++;
368 return $nb;
369 }
370 ?>



FUNC_DATA={
'map2str': ['map2str', 'Convert a 2D map array into a encoded map string. ', [['libs','map_util.php',67]], 10],
'lenght_code': ['lenght_code', 'Run length encode the encoded map string. This saves space on the database as well as network during the transfer at the cost of some CPU. ', [['libs','map_util.php',109]], 11],
'map_extract': ['map_extract', 'Convert a encoded map string into a 2D array. ', [['libs','map_util.php',6]], 20],
'activity_performed': ['activity_performed', 'Increment a counter for the realtime statistics. Check the table ACTIVITIES to see the possible $acttype. ', [['libs','misc_util.php',227]], 5],
'unique_place': ['unique_place', 'Insert an object on the map... used for a daily unique object. ', [['libs','map_util.php',305]], 0],
'close': ['close', '', [['libs','db_conn_5.php',35],['libs','db_conn_5.php',87],['libs','db_conn_4.php',35],['libs','db_conn_4.php',87]], 380],
'retreive_loc': ['retreive_loc', 'retreives the current player location and returns it in the global variables sx,sy; ', [['libs','map_util.php',190]], 2],
'check_walkable_map': ['check_walkable_map', '', [['locations_modules/2dmap','map_script.js',389],['libs','map_util.php',156]], 21],
'map_count': ['map_count', 'Returns the number of cells with a given type ', [['libs','map_util.php',349]], 0],
'inventory_check': ['inventory_check', 'Checks if the player have this item. ', [['libs','objects_util.php',425]], 44],
'grid_link': ['grid_link', 'Returns the link to go to a neirboor map locations ', [['libs','map_util.php',333]], 4],
'execute': ['execute', '', [['libs','db_conn_5.php',37],['libs','db_conn_4.php',37]], 652],
'file_exists': ['file_exists', '', [], 48],
'floor': ['floor', '', [], 45],
'substr': ['substr', '', [], 91],
'is_array': ['is_array', '', [], 1],
'mt_rand': ['mt_rand', '', [], 102],
'strpos': ['strpos', '', [], 28],
'str_pad': ['str_pad', '', [], 11],
'count': ['count', '', [], 113],
'chr': ['chr', '', [], 19],
'ord': ['ord', '', [], 26],
'in_array': ['in_array', '', [], 27],
'ob_end_clean': ['ob_end_clean', '', [], 6]};
CLASS_DATA={
};
CONST_DATA={
};

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Generated: Sun Jul 8 18:11:25 2007
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