// Updates the quantity of a single item in the inventory. If the item
// of itemId being updated is not yet in the inventory, it is added.
// See "AddItem(...)" for more information on conditions under which
// things go awry.
public void UpdateItem(int itemId, int quantity)
{
if (occupiedSpaces.ContainsKey(itemId))
{
InventoryGUIItem item = GetInventoryItem((int)occupiedSpaces[itemId]);
item.SetQuantity(quantity);
}
else
{
AddItem(itemId, quantity);
}
}
// Deletes an item of itemId from the inventory. The space it occupied
// is marked as available for a future item to use. The item no longer
// appears in the graphical interface.
public void DeleteItem(int itemId)
{
if (occupiedSpaces.ContainsKey(itemId))
{
int spaceNumber = (int)occupiedSpaces[itemId];
// Reset the GUI item.
InventoryGUIItem item = GetInventoryItem(spaceNumber);
item.ClearItem();
// Update available spaces, occupied spaces.
availableSpaces.Add(spaceNumber);
occupiedSpaces.Remove(itemId);
}
}
// Generates the grid of placeholders that make up the graphical
// inventory interface. Each placeholder is a prefab which contains
// everything required to ultimately be an item.
private void GenerateInventoryPlaceholders()
{
int i = 0;
for (int y = inventoryItemsVertical - 1; y >= 0; y--)
{
for (int x = 0; x < inventoryItemsHorizontal; x++)
{
InventoryGUIItem inventoryItem = (InventoryGUIItem)Instantiate(inventoryItemCloneable);
inventoryItem.transform.parent = transform;
inventoryItem.transform.localPosition = GetInventoryItemPosition(x, y);
inventoryItem.inventory = inventory;
inventoryItem.itemManager = itemManager;
items.Add(inventoryItem);
availableSpaces.Add(i++);
}
}
}
void Update()
{
if (lastJoystickMovement < 0)
{
if (Input.GetAxisRaw("Joystick UI X") > 0.3) // Right
{
if (joystickSelectedItem < ((inventoryItemsHorizontal - 1) % inventoryItemsHorizontal))
{
// Set current item to a "not hovered" state.
items[joystickSelectedItem].SetNotHoveredByJoystick();
// Set next item to a "hovered" state.
joystickSelectedItem++;
while (!items[joystickSelectedItem].ItemIsSet() && joystickSelectedItem > 0)
{
joystickSelectedItem--;
}
InventoryGUIItem item = items[joystickSelectedItem];
item.SetHoveredByJoystick();
lastJoystickMovement = timeBetweenJoystickMovements;
}
}
if (Input.GetAxisRaw("Joystick UI X") < -0.3) // Left
{
if (joystickSelectedItem > 0)
{
// Set current item to a "not hovered" state.
items[joystickSelectedItem].SetNotHoveredByJoystick();
// Set next item to a "hovered" state.
joystickSelectedItem--;
InventoryGUIItem item = items[joystickSelectedItem];
item.SetHoveredByJoystick();
lastJoystickMovement = timeBetweenJoystickMovements;
}
}
if (Input.GetAxisRaw("Joystick UI Y") < -0.3) // Up
{
if (joystickSelectedItem > (inventoryItemsHorizontal - 1))
{
// Set current item to a "not hovered" state.
items[joystickSelectedItem].SetNotHoveredByJoystick();
// Set next item to a "hovered" state.
joystickSelectedItem -= inventoryItemsHorizontal;
while (!items[joystickSelectedItem].ItemIsSet() && joystickSelectedItem > 0)
{
joystickSelectedItem--;
}
InventoryGUIItem item = items[joystickSelectedItem];
item.SetHoveredByJoystick();
lastJoystickMovement = timeBetweenJoystickMovements;
}
}
if (Input.GetAxisRaw("Joystick UI Y") > 0.3) // Down
{
if (joystickSelectedItem / inventoryItemsHorizontal < (inventoryItemsVertical - 1))
{
// Set current item to a "not hovered" state.
items[joystickSelectedItem].SetNotHoveredByJoystick();
// Set next item to a "hovered" state.
joystickSelectedItem += inventoryItemsHorizontal;
while (!items[joystickSelectedItem].ItemIsSet() && joystickSelectedItem > 0)
{
joystickSelectedItem--;
}
InventoryGUIItem item = items[joystickSelectedItem];
item.SetHoveredByJoystick();
lastJoystickMovement = timeBetweenJoystickMovements;
}
}
}
else
{
lastJoystickMovement -= Time.deltaTime;
}
}