initial commit jolt

Engine/lib/JoltPhysics/PerformanceTest/Layers.h

@@ -0,0 +1,100 @@
+// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
+// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <Jolt/Physics/Collision/ObjectLayer.h>
+#include <Jolt/Physics/Collision/BroadPhase/BroadPhaseLayer.h>
+
+/// Layer that objects can be in, determines which other objects it can collide with
+namespace Layers
+{
+	static constexpr ObjectLayer NON_MOVING = 0;
+	static constexpr ObjectLayer MOVING = 1;
+	static constexpr ObjectLayer NUM_LAYERS = 2;
+};
+
+/// Class that determines if two object layers can collide
+class ObjectLayerPairFilterImpl : public ObjectLayerPairFilter
+{
+public:
+	virtual bool					ShouldCollide(ObjectLayer inObject1, ObjectLayer inObject2) const override
+	{
+		switch (inObject1)
+		{
+		case Layers::NON_MOVING:
+			return inObject2 == Layers::MOVING; // Non moving only collides with moving
+		case Layers::MOVING:
+			return true; // Moving collides with everything
+		default:
+			JPH_ASSERT(false);
+			return false;
+		}
+	}
+};
+
+/// Broadphase layers
+namespace BroadPhaseLayers
+{
+	static constexpr BroadPhaseLayer NON_MOVING(0);
+	static constexpr BroadPhaseLayer MOVING(1);
+	static constexpr uint NUM_LAYERS(2);
+};
+
+/// BroadPhaseLayerInterface implementation
+class BPLayerInterfaceImpl final : public BroadPhaseLayerInterface
+{
+public:
+									BPLayerInterfaceImpl()
+	{
+		// Create a mapping table from object to broad phase layer
+		mObjectToBroadPhase[Layers::NON_MOVING] = BroadPhaseLayers::NON_MOVING;
+		mObjectToBroadPhase[Layers::MOVING] = BroadPhaseLayers::MOVING;
+	}
+
+	virtual uint					GetNumBroadPhaseLayers() const override
+	{
+		return BroadPhaseLayers::NUM_LAYERS;
+	}
+
+	virtual BroadPhaseLayer			GetBroadPhaseLayer(ObjectLayer inLayer) const override
+	{
+		JPH_ASSERT(inLayer < Layers::NUM_LAYERS);
+		return mObjectToBroadPhase[inLayer];
+	}
+
+#if defined(JPH_EXTERNAL_PROFILE) || defined(JPH_PROFILE_ENABLED)
+	virtual const char *			GetBroadPhaseLayerName(BroadPhaseLayer inLayer) const override
+	{
+		switch ((BroadPhaseLayer::Type)inLayer)
+		{
+		case (BroadPhaseLayer::Type)BroadPhaseLayers::NON_MOVING:	return "NON_MOVING";
+		case (BroadPhaseLayer::Type)BroadPhaseLayers::MOVING:		return "MOVING";
+		default:													JPH_ASSERT(false); return "INVALID";
+		}
+	}
+#endif // JPH_EXTERNAL_PROFILE || JPH_PROFILE_ENABLED
+
+private:
+	BroadPhaseLayer					mObjectToBroadPhase[Layers::NUM_LAYERS];
+};
+
+/// Class that determines if an object layer can collide with a broadphase layer
+class ObjectVsBroadPhaseLayerFilterImpl : public ObjectVsBroadPhaseLayerFilter
+{
+public:
+	virtual bool					ShouldCollide(ObjectLayer inLayer1, BroadPhaseLayer inLayer2) const override
+	{
+		switch (inLayer1)
+		{
+		case Layers::NON_MOVING:
+			return inLayer2 == BroadPhaseLayers::MOVING;
+		case Layers::MOVING:
+			return true;
+		default:
+			JPH_ASSERT(false);
+			return false;
+		}
+	}
+};