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Events and control flow Reference

GDevelop comes with a set of events and conditions that allow to express the game logic and rules. Read more explanations about it.

Conditions

And
Checks if all sub-conditions are true. If no sub-condition is specified, it will always be false. This is rarely needed, as events already check all conditions before running actions.

See parameters & details

There are no parameters to set for this condition.

Technical note: this condition internal type (in GDevelop JSON) is BuiltinCommonInstructions::And.

Compare two numbers
Compare the two numbers.

See parameters & details
  • Parameter 0 (🔢 Number): First expression
  • Parameter 1: 🟰 Relational operator
  • Parameter 2 (🔢 Number): Second expression

Technical note: this condition internal type (in GDevelop JSON) is BuiltinCommonInstructions::CompareNumbers.

Compare two strings
Compare the two strings.

See parameters & details
  • Parameter 0 (string): First string expression
  • Parameter 1: 🟰 Relational operator
  • Parameter 2 (string): Second string expression

Technical note: this condition internal type (in GDevelop JSON) is BuiltinCommonInstructions::CompareStrings.

Not
Returns the opposite of the sub-condition(s) result. This is rarely needed, as most conditions can be inverted or expressed more simply.

See parameters & details

There are no parameters to set for this condition.

Technical note: this condition internal type (in GDevelop JSON) is BuiltinCommonInstructions::Not.

Trigger once while true
Run actions only once, for each time the conditions have been met.

See parameters & details

There are no parameters to set for this condition.

Technical note: this condition internal type (in GDevelop JSON) is BuiltinCommonInstructions::Once.

Or
Checks if at least one sub-condition is true. If no sub-condition is specified, it will always be false. This is rarely used — multiple events and sub-events are usually a better approach.

See parameters & details

There are no parameters to set for this condition.

Technical note: this condition internal type (in GDevelop JSON) is BuiltinCommonInstructions::Or.

The Events and control flow extension is always installed in all GDevelop projects: there is no need to add it from the Project Manager.

This page is an auto-generated reference page about the Events and control flow feature of GDevelop, the open-source, cross-platform game engine designed for everyone. Learn more about all GDevelop features here.