Vkm::Engine::PhysicsSystem Class Reference

Fixed-step rigid-body dynamics: integrates, resolves pairwise collisions, writes poses back. More...

#include <physics_system.h>

Inheritance diagram for Vkm::Engine::PhysicsSystem:

Public Member Functions
void	fixedUpdate (FrameContext &ctx) override
	Execute this system at the fixed simulation rate.
bool	isReplayed () const override
	Re-run during a replay: it moves the world from state and command, deterministically.
Public Member Functions inherited from Vkm::Engine::System
virtual void	init (FrameContext &ctx)
	Called once after all systems are registered, before the first update.
virtual void	shutdown ()
	Called once on engine shutdown.
virtual void	update (FrameContext &ctx)
	Execute this system for the current frame.

Detailed Description

Fixed-step rigid-body dynamics: integrates, resolves pairwise collisions, writes poses back.

Runs on the tick in SystemStage::Simulation, ahead of HierarchySystem, so the Transforms it writes reach WorldTransform the same frame. Enqueues CollisionEvent / TriggerEvent as contacts begin, last and end, on live ticks only; a replayed tick already reported.

A parented body simulates in world space (worldPoseOf) and is mapped back relative to its parent. The parent's pose is taken once at gather, so a parent moving mid-tick is not followed, and a scaled parent is not handled (a ColliderPart is unscaled).

Member Function Documentation

fixedUpdate()

void Vkm::Engine::PhysicsSystem::fixedUpdate ( FrameContext & ctx )

overridevirtual

Execute this system at the fixed simulation rate.

Called 0+ times per frame; the step is ctx.clock.getFixedStep().

Runs before any producer stage, so ctx.visibility and ctx.ui are null here. ctx.poses is set by SkeletalAnimationSystem's own fixedUpdate, so a later Simulation system reads this tick's pose.

Parameters

ctx	This frame's services; see above for which products are set.

Reimplemented from Vkm::Engine::System.

isReplayed()

bool Vkm::Engine::PhysicsSystem::isReplayed ( ) const

inlineoverridevirtual

Re-run during a replay: it moves the world from state and command, deterministically.

Returns

Always true.

Reimplemented from Vkm::Engine::System.

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The documentation for this class was generated from the following file:

• system/physics/physics_system.h