Putting It All Together - Unity Game Development Scripting - page 226

The first if statement will allow the player to shoot the projectile. To shoot it, we
instantiate the GameObject and the player's location and rotation. To let the player
pause the game, use an input that we created in Chapter 1 , Interactive Input . Setting
the timeScale object to 0 will pause any script that uses the Update function, and
setting it to 1 will resume it.
Collecting potions
To collect potions, we will need to add a collision function, as follows:
void OnTriggerEnter(Collider other)
{
if(other.tag == "Potion")
{
GetComponent<Inventory>().AddToInventory(1,
Potion);
for(int i = 0; i <
GetComponent<GUI_2D>().Items.Count; i ++)
{
if(GetComponent<GUI_2D>().Items[i].name
== "")
GetComponent<GUI_2D>().Items[i] =
Potion;
break;
}
Destroy(other.gameObject);
}
}
To collect the potion, we check the trigger's tag to make sure it is the potion. Next,
we add it to the inventory by calling the AddToInventory function of the Invent-
ory component, which we will be adding later. Also, we add it to the GUI by calling
the Items array from the GUI_2D component and assigning the potion. Finally, we
destroy the GameObject potion in the game world so that the player can no longer
get that potion.