is_matrix(n);
| Argument | Description |
|---|---|
| n | The argument to check. |
Returns: Boolean
This function returns whether a given variable refers to a
matrix or not. In some cases you want to check and see what data
type a variable holds in GameMaker: Studio and that's when
you would use this function. It returns true or
false depending on whether the value is a matrix or not.
For further information on data types see here, and
to find out more about the matrix functions see: 3D
Transforms.
if !is_matrix(val)
{
show_debug_message("Not a valid matrix!");
}
The above code checks the variable "val" to see if it contains a matrix and if it is not then it shows a message in the debug console.