Update elementmix.calc.php

Bugfix - 18 :In certain situations, some properties tags will be incorrectly unset when doing the mix, producing items that miss some specific properties.
Two fixes are implemented and one of them is used.

include/game/elementmix.calc.php

@@ -568,12 +568,24 @@
 						if(is_array($obbs)) $obbs = isset($obbs[$itmk]) ? $obbs[$itmk] : $obbs['default'];
 						if(rand(0,100) > $obbs) continue; 
 					}
-					# Trial Fix #2 - If array_search would result in a false, we skip the unset process.
-					//Let's see what happens:
+					//18th fix: kudos to 低维生物
 					$delsub = $minfo['stuff'];
-					if(array_search($delsub, $subtags)!== false){
+					$count_delsub = count($mnifo['stuff']);
+					
+					for ($i = 0; $i < count($subtags); $i++){
+						if (in_array($subtags[$i], $minfo['stuff'])){
+							unset($subtags[$i]);
+							$count_delsub -= 1;
+							if ($count_delsub == 0) break;
+						}
+					}
+					if(array_search($delsub, $subtags)!== false){ //?
 					# 配对成功！消除素材特征
 					foreach($minfo['stuff'] as $delsub) unset($subtags[array_search($delsub,$subtags)]);}
+					//Alternative Fix: This will consume all properties in $subtags that matches $delsub.
+					//But stacking is better anyways. - comment out the above FOR loop then uncomment this to use
+					//$subtags = array_diff($subtags, $delsub);
+					$subtags = array_values($subtags);
 					# 将组合结果加入属性队列
 					$sk[] = $minfo['result'];
 					# 将探索到的次要特征组合加入笔记内