World

Edit

A World is an object that holds all of the colliders and joints in a physics simulation.

Be sure to call World:update on the World every frame to advance the simulation.

Constructor

lovr.physics.newWorld

Create a new World.

Basics

World:update	Advance the physics simulation.
World:interpolate	Interpolate collider poses.
World:getGravity	Get the gravity of the World.
World:setGravity	Set the gravity of the World.
World:getCallbacks	Get the World's collision callbacks.
World:setCallbacks	Set the World's collision callbacks.
World:destroy	Destroy the World!! Muahaha!
World:isDestroyed	Check if the World has been destroyed.

Queries

Queries answer some question about the World, like "do any colliders intersect this line?" or "are there any colliders inside this sphere?". There are 3 types of queries:

• "cast" tests sweep a shape along a line and figure out which colliders are in its path.
• "overlap" tests place a shape at a position and figure out which colliders it touches.
• "query" tests are similar to overlap tests, but they are fast and inexact. They only check the bounding box of a collider, and only support testing against simple shapes.

World:raycast	Find colliders that intersect a line.
World:shapecast	Move a shape through the world and return any colliders it touches.
World:overlapShape	Find colliders that overlap a shape.
World:queryBox	Find colliders that intersect an axis-aligned box.
World:querySphere	Find colliders that intersect a sphere.

Collision Tags

Collision tags are used to ignore collision between certain pairs of colliders. The list of available tags is defined when creating the world, and colliders can be given a tag using Collider:setTag.

World:getTags	Get the World's list of collision tags.
World:disableCollisionBetween	Disable collision between two tags.
World:enableCollisionBetween	Enable collision between two tags.
World:isCollisionEnabledBetween	Check if two tags can collide.

Colliders

World:newCollider	Add a Collider to the World.
World:newBoxCollider	Add a Collider with a BoxShape to the World.
World:newSphereCollider	Add a Collider with a SphereShape to the World.
World:newCapsuleCollider	Add a Collider with a CapsuleShape to the World.
World:newCylinderCollider	Add a Collider with a CylinderShape to the World.
World:newConvexCollider	Add a Collider with a ConvexShape to the World.
World:newMeshCollider	Add a Collider with a MeshShape to the World.
World:newTerrainCollider	Add a Collider with a TerrainShape to the World.
World:getColliderCount	Get the number of colliders in the world.
World:getColliders	Get a list of colliders in the World.

Joints

World:getJointCount	Get the number of joints in the world.
World:getJoints	Get a list of joints in the World.

See also

• Object
• lovr.physics