//Hate Spell, v0.2; 5th August, 2019; ZoriaRPG
//Spell Item to increase weapon power of a specific itemclass while the item is active.
//D0: A sound to play as an error...
//D1: The item class to use. Defaults to IC_SWORD.
//D2: Damage Multiplier

//Item Editor Fields
// Cost Counter: The counter to check.
// Cost: The cost to apply per revolution.
// Timer: The number of frames to wait before checking the cost.

item script hatespell
{	
	bool isRunning = false; //script-global
	//Did I build item script spam prevention into the engine, so that a player can't cause an item already 
	//running a script to restart the script with a second use of that item while the first
	//instance is still running?
	void run(int errSfx, int affectedItemClass, float power_multiplier)
	{
		int f;
		bool quit_by_button_press;
		affectedItemClass = ( affectedItemClass > 0 ) affectedItemClass : IC_SWORD;
		power_multiplier = ( power_multiplier > 0 ) power_multiplier : 1.5000;
		int tempitmpower[256];
		
		if ( isRunning ) //need to kill it early, don't run twice
		{
			Audio->PlaySound(this->UseSound); //Play the use sound again, when deactivating.
			for ( int q = 0; q < 256; ++q )
			{
				itemdata theItem = Game->LoadItemData(q);
				if ( theItem->Class == affectedItemClass )
				{
					if ( tempitmpower[q] )
					{
						theItem->Power = tempitmpower[q]-1;
					}
				}
			}	
			isRunning = false;
			Quit();
		}
		
		if ( Game->Counter[this->CostCounter] < this->Cost )
		{
			Audio->PlaySound(errSfx); Quit(); //If we can't pay the cost, quit.
		}
		else
		{
			isRunning = true; //mark as active so that we can't spam it.
		}
		
		for ( int q = 0; q < 256; ++q )
		{
			itemdata theItem = Game->LoadItemData(q);
			if ( theItem->Class == affectedItemClass )
			{
				tempitmpower[q] = theItem->Power+1;
				theItem->Power *= power_multiplier;
			}
		}
		while(1)
		{
			++f;
			if ( f < 0 ) f = 1; //fix underflows
			if ( (!(f%this->CostTimer)) ) //every n frames, apply the cost
			{
				if((Game->Counter[this->CostCounter] -= this->Cost) > 0)
				{
					Waitframe();
				}
				else break;
			}
			if (( Hero->PressA && Hero->ItemA == this->ID ) ||( Hero->PressB && Hero->ItemB == this->ID ) || quit_by_button_press )
			{
				break; ///Using the item again, ends its effect.
			}
			Waitframe();
		}
		
		Audio->PlaySound(this->UseSound); //Play the use sound again, when deactivating.
		//Restore original item Power values, as the effect has ended.
		for ( int q = 0; q < 256; ++q )
		{
			itemdata theItem = Game->LoadItemData(q);
			if ( theItem->Class == affectedItemClass )
			{
				if ( tempitmpower[q] )
				{
					theItem->Power = tempitmpower[q]-1;
				}
			}
		}	
		Quit();
	}
		
}