background_exists(index);
| Argument | Description |
|---|---|
| index | The index of the background to check. |
Returns: N/A
This function returns whether a background with the specified
index exists or not. Please note, that the value used for checking
must have been initialised previously or else you will get
an error causing GameMaker: Studio to close.
if background_exists(bck_array[0])
{
background_index[0] = bck_array[0];
}
else
{
background_index[0] = bck_Base;
}
The above code checks an array to see if it contains a valid background index and if so it assigns that background to the current room, but if not, it assigns a background from the included resources.