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.