Engine. EngineObject

Attaches a child to this with a local transform, returns child for chaining

Apply acceleration to this object (adjust velocity, not affected by mass)

• Does nothing on a static object (mass 0), set its velocity instead

Apply angular acceleration to this object

• Does nothing on a static object (mass 0), set its angleVelocity instead

Apply force to this object (adjust velocity, affected by mass)

• Does nothing on a static object (mass 0), set its velocity instead

Attaches a child to this without moving it: the local transform is worked out from where the child is now, where addChild takes one; a child of something else is moved over, returns child for chaining

Called by the engine to check if an object collision should be resolved. Return true for physics to resolve the collision or false to ignore and resolve it manually.

• Both objects of a touching pair are asked once a frame, whichever order they update in; an object that destroys itself here is gone at the end of the frame and is still asked about the pairs left this frame, so a bullet that should hit one thing checks its own destroyed flag first

Called to check if a tile collision should be resolved. Return true for physics to resolve the collision or false to ignore and resolve it manually.

• Called for each solid tile the physics tests, which can be several times a frame for the same tile, and for positions it only tries, so keep it free of side effects or guard them to once a frame
• this.pos has already moved, so a check on where it came from, like a one way platform, needs the position saved in update, as the platformer example does

Destroy this object, destroy its children, detach its parent, and mark it for removal

How long since the object was created

Get the direction of the mirror

Get this object's right vector

Get the speed of this object

Get this object's up vector

Check if overlapping a point or aligned bounding box

Check if this object's box overlaps another object's box

Convert from local space to world space

Convert from local space to world space for a vector (rotation only)

Removes a child from this one, it stays where it is in the world

Render the object, draws a tile by default, automatically called each frame, sorted by renderOrder

Render debug info for this object

Draw this object's shape into the light system's lightmap, called during its light pass when emissive is above 0; what it draws shows in its own colors that much brighter. Calls render() by default so the whole object glows; override to glow a part, like a robot's eyes

Optional hook called during the light system plugin's lightmap pass to draw this object's lightmap contribution. Does nothing by default.

Draw this object into the light system's shadow map, called during its shadow pass when castShadow is set. Calls render() by default so the object casts its own shape; override to cast a different one, like a blob at a character's feet so its body stays lit; screen space WebGL draws in render() are skipped during the pass

Set how this object collides

Returns string containing info about this object for debugging

Update the object, called automatically by engine once each frame. Does nothing by default.

Update the object physics, called automatically by engine once each frame. Can be overridden to stop or change how physics works for an object.

Update the object transform, called automatically by engine even when paused

Convert from world space to local space

Convert from world space to local space for a vector (rotation only)