Collision

Category: Listener Tier: Basic

Purpose

Detects collisions and overlaps with other physics objects, with filtering by name, group, material, or property.

Visual Reference

As added to your scene

When To Use

• Damage on collision (player hits enemy)

• Pickup items (player touches collectible)

• Trigger zones (enter area to open door)

• Ground detection (character on floor)

• Projectile hits (bullet collides with wall)

• Power-up effects (player touches speed boost)

Runtime Behavior

Triggers: When this object collides with another object that matches the specified filter criteria

Generated UI Mockup — showing expanded properties

Collision

-

x

Name:

Label this brick...

Invert

Collision Type:

v

Target:

v

Property Value:

v

Pulse:

v

Expose Collision Data:

v

Expose Scope:

v

Expose Prefix:

v

Properties

Property	Type	Default	Notes
collision_type	option, “Any”		What to check on collision (see available types below)
target	string, “”		Name/Group/Material/Property to match
property_value	string, “”		Expected property value (empty = just check existence)
pulse	bool, false		Toggle/edge detection mode - triggers only on collision state change rather than continuously
expose_collision_data	bool, false		Write collider name, group, position, normal, and count into variables when the listener fires.
expose_scope	option, Local		Write exposed values to Local or Global variables (visible when expose_collision_data=true).
expose_prefix	string, collision		Prefix used for exposed variable names (visible when expose_collision_data=true).

Example Use Cases

Basic Damage Detection:

Collision(type=Any) -> AND -> Math(HP, Subtract, 10)
// Lose 10 HP when hitting anything

Pickup System:

Collision(type=Group, target=Collectibles) -> AND -> Sound(pickup) + Visibility(false)
// Play sound and hide item when player touches collectible

Enemy-Specific Damage:

Collision(type=Group, target=Enemies) -> AND -> Math(HP, Subtract, 25)
// Take 25 damage only from enemies

Ground Detection:

Collision(type=Property, target=is_ground, value=true) -> AND -> Property(grounded, Set, true)
// Set grounded=true when touching ground

Trigger Zone:

Collision(type=Object Name, target=Player) -> AND -> Message(door_open)
// Send door_open message when player enters zone