50 lines
1.9 KiB
C++
50 lines
1.9 KiB
C++
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// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
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// SPDX-FileCopyrightText: 2024 Jorrit Rouwe
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// SPDX-License-Identifier: MIT
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#include <TestFramework.h>
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#include <Tests/SoftBody/SoftBodyCustomUpdateTest.h>
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#include <Jolt/Physics/SoftBody/SoftBodyCreationSettings.h>
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#include <Jolt/Physics/SoftBody/SoftBodyMotionProperties.h>
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#include <Utils/SoftBodyCreator.h>
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#include <Layers.h>
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#include <Renderer/DebugRendererImp.h>
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JPH_IMPLEMENT_RTTI_VIRTUAL(SoftBodyCustomUpdateTest)
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{
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JPH_ADD_BASE_CLASS(SoftBodyCustomUpdateTest, Test)
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}
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void SoftBodyCustomUpdateTest::Initialize()
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{
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// Floor
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CreateFloor();
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// Create a body but do not add it to the physics system (we're updating it ourselves)
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SoftBodyCreationSettings sphere(SoftBodyCreator::CreateSphere(), RVec3(0, 5, 0), Quat::sIdentity(), Layers::MOVING);
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sphere.mPressure = 2000.0f;
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mBody = mBodyInterface->CreateSoftBody(sphere);
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}
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void SoftBodyCustomUpdateTest::PrePhysicsUpdate(const PreUpdateParams &inParams)
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{
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// Note that passing a variable delta time results in differences in behavior, usually you want to have a fixed time step.
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// For this demo we'll just clamp the delta time to 1/60th of a second and allow behavioral changes due to frame rate fluctuations.
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float dt = min(inParams.mDeltaTime, 1.0f / 60.0f);
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// Call the update now
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SoftBodyMotionProperties *mp = static_cast<SoftBodyMotionProperties *>(mBody->GetMotionProperties());
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mp->CustomUpdate(dt, *mBody, *mPhysicsSystem);
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#ifdef JPH_DEBUG_RENDERER
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// Draw it as well since it's not added to the world
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mBody->GetShape()->Draw(mDebugRenderer, mBody->GetCenterOfMassTransform(), Vec3::sOne(), Color::sWhite, false, false);
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#else
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// Draw the vertices
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RMat44 com = mBody->GetCenterOfMassTransform();
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for (const SoftBodyVertex &v : mp->GetVertices())
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mDebugRenderer->DrawMarker(com * v.mPosition, Color::sRed, 0.1f);
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#endif // JPH_DEBUG_RENDERER
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}
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