NPC능동 추가

hwe/sammo/Constraint/MustBeNPC.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace sammo\Constraint;
+
+class MustBeNPC extends Constraint{
+
+    public function checkInputValues(bool $throwExeception=true){
+        if(!parent::checkInputValues($throwExeception) && !$throwException){
+            return false;
+        }
+
+        if(!key_exists('npc', $this->general)){
+            if(!$throwExeception){return false; }
+            throw new \InvalidArgumentException("require npc in general");
+        }
+
+        return true;
+    }
+
+    public function test():bool{
+        $this->checkInputValues();
+        $this->tested = true;
+
+        if($this->general['npc'] < 2){
+            $this->reason = "NPC여야 합니다.";
+            return false;
+        }
+        return true;
+    }
+}