Method SamplesApp

engine/3rdparty/JoltPhysics/Samples/SamplesApp.cpp:313–499

static constexpr uint cMaxContactConstraints = 10240;

SamplesApp::SamplesApp()
{
	// Allocate temp memory
#ifdef JPH_DISABLE_TEMP_ALLOCATOR
	mTempAllocator = new TempAllocatorMalloc();
#else
	mTempAllocator = new TempAllocatorImpl(16 * 1024 * 1024);
#endif

	// Create job system
	mJobSystem = new JobSystemThreadPool(cMaxPhysicsJobs, cMaxPhysicsBarriers, mMaxConcurrentJobs - 1);

	// Create job system without extra threads for validating
	mJobSystemValidating = new JobSystemThreadPool(cMaxPhysicsJobs, cMaxPhysicsBarriers, 0);

	// Create UI
	UIElement *main_menu = mDebugUI->CreateMenu();
	mDebugUI->CreateTextButton(main_menu, "Select Test", [this]() { 
		UIElement *tests = mDebugUI->CreateMenu();
		for (TestCategory &c : sAllCategories)
		{
			mDebugUI->CreateTextButton(tests, c.mName, [=]() { 
				UIElement *category = mDebugUI->CreateMenu();
				for (uint j = 0; j < c.mNumTests; ++j)
					mDebugUI->CreateTextButton(category, c.mTests[j].mName, [=]() { StartTest(c.mTests[j].mRTTI); });
				mDebugUI->ShowMenu(category);
			});
		}
		mDebugUI->ShowMenu(tests);
	});
	mTestSettingsButton = mDebugUI->CreateTextButton(main_menu, "Test Settings", [this](){
		UIElement *test_settings = mDebugUI->CreateMenu();
		mTest->CreateSettingsMenu(mDebugUI, test_settings);
		mDebugUI->ShowMenu(test_settings);
	});
	mDebugUI->CreateTextButton(main_menu, "Restart Test (R)", [this]() { StartTest(mTestClass); });
	mDebugUI->CreateTextButton(main_menu, "Run All Tests", [this]() { RunAllTests(); });
	mNextTestButton = mDebugUI->CreateTextButton(main_menu, "Next Test (N)", [this]() { NextTest(); });
	mNextTestButton->SetDisabled(true);
	mDebugUI->CreateTextButton(main_menu, "Take Snapshot", [this]() { TakeSnapshot(); });
	mDebugUI->CreateTextButton(main_menu, "Take And Reload Snapshot", [this]() { TakeAndReloadSnapshot(); });
	mDebugUI->CreateTextButton(main_menu, "Physics Settings", [this]() { 
		UIElement *phys_settings = mDebugUI->CreateMenu();
		mDebugUI->CreateSlider(phys_settings, "Max Concurrent Jobs", float(mMaxConcurrentJobs), 1, float(thread::hardware_concurrency()), 1, [this](float inValue) { mMaxConcurrentJobs = (int)inValue; });
		mDebugUI->CreateSlider(phys_settings, "Gravity (m/s^2)", -mPhysicsSystem->GetGravity().GetY(), 0.0f, 20.0f, 1.0f, [this](float inValue) { mPhysicsSystem->SetGravity(Vec3(0, -inValue, 0)); });
		mDebugUI->CreateSlider(phys_settings, "Update Frequency (Hz)", mUpdateFrequency, 7.5f, 120.0f, 2.5f, [this](float inValue) { mUpdateFrequency = inValue; });
		mDebugUI->CreateSlider(phys_settings, "Num Collision Steps", float(mCollisionSteps), 1.0f, 4.0f, 1.0f, [this](float inValue) { mCollisionSteps = int(inValue); });
		mDebugUI->CreateSlider(phys_settings, "Num Integration Sub Steps", float(mIntegrationSubSteps), 1.0f, 4.0f, 1.0f, [this](float inValue) { mIntegrationSubSteps = int(inValue); });
		mDebugUI->CreateSlider(phys_settings, "Num Velocity Steps", float(mPhysicsSettings.mNumVelocitySteps), 0, 30, 1, [this](float inValue) { mPhysicsSettings.mNumVelocitySteps = int(round(inValue)); mPhysicsSystem->SetPhysicsSettings(mPhysicsSettings); });
		mDebugUI->CreateSlider(phys_settings, "Num Position Steps", float(mPhysicsSettings.mNumPositionSteps), 0, 30, 1, [this](float inValue) { mPhysicsSettings.mNumPositionSteps = int(round(inValue)); mPhysicsSystem->SetPhysicsSettings(mPhysicsSettings); });
		mDebugUI->CreateSlider(phys_settings, "Baumgarte Stabilization Factor", mPhysicsSettings.mBaumgarte, 0.01f, 1.0f, 0.05f, [this](float inValue) { mPhysicsSettings.mBaumgarte = inValue; mPhysicsSystem->SetPhysicsSettings(mPhysicsSettings); });
		mDebugUI->CreateSlider(phys_settings, "Speculative Contact Distance (m)", mPhysicsSettings.mSpeculativeContactDistance, 0.0f, 0.1f, 0.005f, [this](float inValue) { mPhysicsSettings.mSpeculativeContactDistance = inValue; });
		mDebugUI->CreateSlider(phys_settings, "Penetration Slop (m)", mPhysicsSettings.mPenetrationSlop, 0.0f, 0.1f, 0.005f, [this](float inValue) { mPhysicsSettings.mPenetrationSlop = inValue; });
		mDebugUI->CreateSlider(phys_settings, "Min Velocity For Restitution (m/s)", mPhysicsSettings.mMinVelocityForRestitution, 0.0f, 10.0f, 0.1f, [this](float inValue) { mPhysicsSettings.mMinVelocityForRestitution = inValue; mPhysicsSystem->SetPhysicsSettings(mPhysicsSettings); });
		mDebugUI->CreateSlider(phys_settings, "Time Before Sleep (s)", mPhysicsSettings.mTimeBeforeSleep, 0.1f, 1.0f, 0.1f, [this](float inValue) { mPhysicsSettings.mTimeBeforeSleep = inValue; mPhysicsSystem->SetPhysicsSettings(mPhysicsSettings); });
		mDebugUI->CreateSlider(phys_settings, "Point Velocity Sleep Threshold (m/s)", mPhysicsSettings.mPointVelocitySleepThreshold, 0.01f, 1.0f, 0.01f, [this](float inValue) { mPhysicsSettings.mPointVelocitySleepThreshold = inValue; mPhysicsSystem->SetPhysicsSettings(mPhysicsSettings); });
		mDebugUI->CreateCheckBox(phys_settings, "Constraint Warm Starting", mPhysicsSettings.mConstraintWarmStart, [this](UICheckBox::EState inState) { mPhysicsSettings.mConstraintWarmStart = inState == UICheckBox::STATE_CHECKED; mPhysicsSystem->SetPhysicsSettings(mPhysicsSettings); });
		mDebugUI->CreateCheckBox(phys_settings, "Use Body Pair Contact Cache", mPhysicsSettings.mUseBodyPairContactCache, [this](UICheckBox::EState inState) { mPhysicsSettings.mUseBodyPairContactCache = inState == UICheckBox::STATE_CHECKED; mPhysicsSystem->SetPhysicsSettings(mPhysicsSettings); });