is_vec4

In some cases you want to check and see what data type a variable holds in GameMaker Studio 2 and that's when you would use this function. It returns true or false depending on whether the value is a 4 value vector or not.

Syntax:

is_vec4(n);

Returns:

Boolean

Example:

if !is_vec4(val)
    {
    show_debug_message("Not a 4 value vector!");
    }

The above code checks the variable "val" to see if it contains a vec4 and if it is not then it shows a message in the debug console.