//! zinc
library Water requires GroupUtils,UnitLibrary,TerrainPathability,UnitData{

	private{
		constant integer MURLOC_BUILDER_ABIL_ID = 'A0K1';
		constant integer MURLOC_BUILDER_BUFF_ID = 'B04B';
		constant integer MURLOC_BUILDER_BASE_ID = 'A003'; //Panic

		constant real    PERIOD  = 0.10;
	}

	function onFilter()->boolean{
		return GetUnitTypeId(GetFilterUnit())==MURLOC_BUILDER;//Add more to filter for water based passives
	}

	function onTimer()->boolean{
		unit u=null;
		group g=NewGroup();
		boolexpr b=Filter(function onFilter);
		GroupEnumUnitsInArea(g,0.0,0.0,10000,b);
		DestroyBoolExpr(b);
		if (CountUnitsInGroup(g)>0){
			u=FirstOfGroup(g);
			while (u!=null){
				if (IsTerrainShallowWater(Unit[u].x,Unit[u].y)){
					if (Unit[u].id==MURLOC_BUILDER){
						if (Unit[u].getAbilityLevel(MURLOC_BUILDER_ABIL_ID)==0){
							Unit[u].addAbility(MURLOC_BUILDER_ABIL_ID);
							Unit[u].hideAbility(MURLOC_BUILDER_ABIL_ID,true);
							Unit[u].setAbilityLevel(MURLOC_BUILDER_BASE_ID,2);
						}
					}
				}else{
					if (Unit[u].id==MURLOC_BUILDER){
						if (Unit[u].getAbilityLevel(ABIL_ID)>0){
							Unit[u].removeAbility(MURLOC_BUILDER_ABIL_ID);
							Unit[u].removeBuff(MURLOC_BUILDER_BUFF_ID);
							Unit[u].setAbilityLevel(MURLOC_BUILDER_BASE_ID,1);
						}
					}
				}
				GroupRemoveUnit(g,u);
				u=FirstOfGroup(g);
			}
		}
		ReleaseGroup(g);
		u=null;
		g=null;
		b=null;
		return false;
	}

	function onInit(){
		trigger t=CreateTrigger();
		TriggerRegisterTimerEventPeriodic(t,PERIOD);
		TriggerAddCondition(t,Filter(function onTimer));
		t=null;
	}
}
//! endzinc