/// <summary>
/// Adds an item given an extractor/inserter. Calculates and places in the right slot.
/// </summary>
/// <param name="item"></param>
/// <param name="inserter"></param>
/// <returns></returns>
public GenericItem AddItem(GenericItem item, Extractor inserter)
{
//Side the inserter is using
InsertSide insert_side = inserter.OUTPUT_SIDE;
InsertDir insert_dir = GetInsertDir(inserter.GetComponent <GridController>());
BeltSide side = GetBeltSide(insert_dir, insert_side);
BeltPos pos = GetBeltPos(insert_dir, insert_side);
//If it isn't valid, return immediately.
if (!isValidInsert(insert_dir, insert_side))
{
return(null);
}
else
{
//Get the relevant list.
List <ItemController> LIST = GetSideList(side);
//Get the relevant index.
int index = GetIndex(side, pos);
//Update the right index.
LIST[(int)pos] = item.SpawnObject(ITEM_POSITIONS[index].position, ITEM_POSITIONS[index].rotation, ITEM_POSITIONS[index]);
return(LIST[(int)pos].INFO);
}
}
/// <summary>
/// Attempts to insert an item given an extractor/inserter.
/// Returns the item if successful, else null.
/// </summary>
/// <param name="item"></param>
/// <param name="inserter"></param>
/// <returns></returns>
public bool AttemptExtractItem(GenericItem item, Extractor inserter)
{
//Side the inserter is using
InsertSide insert_side = inserter.OUTPUT_SIDE;
InsertDir insert_dir = GetInsertDir(inserter.GetComponent <GridController>());
BeltSide side = GetBeltSide(insert_dir, insert_side);
BeltPos pos = GetBeltPos(insert_dir, insert_side);
return(isItemAccessible(side, pos, item));
}
/// <summary>
/// Returns the index in the item positions list for the given slot.
/// </summary>
/// <param name="side"></param>
/// <param name="pos"></param>
/// <returns></returns>
public int GetIndex(BeltSide side, BeltPos pos)
{
if (side == BeltSide.Left)
{
return((int)pos);
}
else
{
return((int)pos + 3);
}
}
/// <summary>
/// Returns true or false depending on if the slot that is meant to be used on insert based on direction is empty.
/// Inserters output either to their left or right half of the square. As such:
/// Left insert direction inserters outputting to the left output to the front of the belt.
/// Left insert direction inserters outputting to the right output to the back of the belt.
/// </summary>
/// <param name="insertDir"></param>
/// <returns></returns>
public bool isValidInsert(InsertDir insertDir, InsertSide insertSide)
{
BeltSide side = GetBeltSide(insertDir, insertSide);
BeltPos pos = GetBeltPos(insertDir, insertSide);
ItemController EC = GetItem(side, pos);
if (EC == null)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Checks if the given item is in the given side and position.
/// </summary>
/// <param name="side"></param>
/// <param name="pos"></param>
/// <param name="item"></param>
/// <returns></returns>
public bool isItemAccessible(BeltSide side, BeltPos pos, GenericItem item)
{
ItemController SLOT_ITEM = GetItem(side, pos);
if (SLOT_ITEM == null)
{
return(false);
}
else if (SLOT_ITEM.INFO == item)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Returns the entitycontroller in the given position on the given side.
/// </summary>
/// <param name="side"></param>
/// <param name="pos"></param>
/// <returns></returns>
public ItemController GetItem(BeltSide side, BeltPos pos)
{
//Get the right side of the belt.
List <ItemController> SIDE_LIST = GetSideList(side);
//Return the entity in a given position from the side list.
switch (pos)
{
case BeltPos.Back:
return(SIDE_LIST[(int)BeltPos.Back]);
case BeltPos.Middle:
return(SIDE_LIST[(int)BeltPos.Middle]);
case BeltPos.Front:
return(SIDE_LIST[(int)BeltPos.Front]);
default:
throw new System.Exception("Error, invalid belt position.");
}
}
/// <summary>
/// Extracts item with given inserter.
/// Only decrements this inventory, does not add to the inserter's inventory.
/// Returns the item if successful, else null;
/// </summary>
/// <param name="item"></param>
/// <param name="inserter"></param>
/// <returns></returns>
public GenericItem ExtractItem(GenericItem item, Extractor inserter)
{
//Side the inserter is using
InsertSide insert_side = inserter.OUTPUT_SIDE;
InsertDir insert_dir = GetInsertDir(inserter.GetComponent <GridController>());
BeltSide side = GetBeltSide(insert_dir, insert_side);
BeltPos pos = GetBeltPos(insert_dir, insert_side);
//Get the relevant list.
List <ItemController> LIST = GetSideList(side);
//Get the relevant index.
int index = GetIndex(side, pos);
//Save the item to be returned
GenericItem item_ret = LIST[(int)pos].INFO;
//Update side list.
LIST[(int)pos].DespawnObject();
LIST[(int)pos] = null;
return(item_ret);
}