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// Evol scripts for simplified quest development.
// Author:
//    Livio

/*
	@brief Prints the list of quest ingredients on the NPC window
	@param Array with items IDs
	@param Array with relative amount required
	@returns nothing
*/
function	script	printIngredients	{
	for (.@i = 0; .@i < getarraysize(getarg(0)); .@i++) {
		mesf(" - %d %s", getelementofarray(getarg(1), .@i), getitemlink(getelementofarray(getarg(0), .@i)));
	}
	return;
}

/*
	@brief Checks if player has items required
	@param Array with required items IDs
	@param Array with relative amount required
	@returns false if player doesn't have required items
*/
function	script	checkForItems	{
	for (.@i = 0; .@i < getarraysize(getarg(0)); .@i++) {
		// If even a single thing is missing abort immediately
		if(getelementofarray(getarg(1), .@i) > countitem(getelementofarray(getarg(0), .@i))) {
			return false;
		}
	}
	return true;
}

/*
	@brief Craft an item from some other items. All input items got deleted.
	@param Array with required items IDs
	@param Array with relative amount required
	@param output item IDs
	@param output amount
	@returns 0 if successful, 1 if player lack ingredients, 2 if overburdened, 255 code error
*/
function	script	craftFromPlayer	{
	// Check input parameter amount
	if (getargcount() != 4) return 255;

	// Check item amounts
	if (!checkForItems(getarg(0), getarg(1))) return 1;

	// Check if player is able to carry output from crafting
	if (!checkweight(getarg(2), getarg(3))) return 2;
	else getitem(getarg(2), getarg(3));

	// Delete Items from player inventory
	for (.@i = getarrayindex(getarg(0)); .@i < getarraysize(getarg(0)); .@i++) {
		delitem(getelementofarray(getarg(0), .@i), getelementofarray(getarg(1), .@i));
	}

	return 0;
}

/*
	@brief Craft an item from some other items. All input items will be deleted in case of success.
	@param Array with required items IDs
	@param Array with relative amount required
	@param output item IDs
	@param output amount
	@param NPC question about ingredients
	@param NPC answer if successful
	@param NPC answer if player lacks ingredients
	@param NPC answer if player is overburdened
	@returns true if successful
*/
function	script	NPCcrafting	{
	speech
		getarg(4);
	if (askyesno() == ASK_NO) {
		mesq l("Come on, move!");
		close;
	} else {
		switch(craftFromPlayer(getarg(0), getarg(1), getarg(2), getarg(3))) {
			case 0:
				mesq getarg(5);
				return true;
				break;

			case 1:
				mesq getarg(6);
                // FIXME - Gather proper variables
				printIngredients(getarg(0), getarg(1));
				break;

			case 2:
				mesq getarg(7);
				break;

			case 255:
				mesq l("[BUG ENCOUNTERED] Dammit...");
				break;

			default:
		}
	}
	return false;
}