GML (Game Maker)

GML, or Game Maker Language, is Game Maker's built-in scripting language. It is used to program more complex games that is possible with drag and drop. It can be used in the Execute a piece of code action or be written in scripts that can be called at any time.

There is some debate whether or not GML is a real programming language. Technically, it is a scripting language, like Javascript, ActionScript, PHP, and Perl in that it is interpreted rather than compiled.

Syntax

GML has a variable syntax, which is to say that it can be written in the syntax of several languages. The most common syntax used is C/C++ style syntax.

Data and Data Structures

• data type

Data Type Functons

• is_real() - check if a variable contains a real number
• is_string() - check to see if a variable contains a string
• real() - convert a string into a real number
• string() - convert a real number into a string

Variables

• variable
• Create a Variable
• Make a Variable Negative
• Limit the Value of a Variable
• Swap the Values of Two Variables

Global Variables

• global variable
  • health
  • lives
  • score

Arrays

• array

Program Flow

• If

Related Pages

• GML FAQ - general GML faq.
• function
• instance
• object
• step