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Source/Engine/Physics/PhysicalMaterial.h

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+// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#include "Types.h"
+#include "Engine/Serialization/ISerializable.h"
+
+// Default values for the physical material
+
+#define PhysicalMaterial_Friction 0.7f
+#define PhysicalMaterial_FrictionCombineMode PhysicsCombineMode::Average
+#define PhysicalMaterial_OverrideFrictionCombineMode false
+#define PhysicalMaterial_Restitution 0.3f
+#define PhysicalMaterial_RestitutionCombineMode PhysicsCombineMode::Average
+#define PhysicalMaterial_OverrideRestitutionCombineMode false
+
+/// <summary>
+/// Physical materials are used to define the response of a physical object when interacting dynamically with the world.
+/// </summary>
+class FLAXENGINE_API PhysicalMaterial : public ISerializable
+{
+private:
+
+    PxMaterial* _material;
+
+public:
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="PhysicalMaterial"/> class.
+    /// </summary>
+    PhysicalMaterial();
+
+    /// <summary>
+    /// Finalizes an instance of the <see cref="PhysicalMaterial"/> class.
+    /// </summary>
+    ~PhysicalMaterial();
+
+public:
+
+    /// <summary>
+    /// The friction value of surface, controls how easily things can slide on this surface.
+    /// </summary>
+    float Friction = PhysicalMaterial_Friction;
+
+    /// <summary>
+    /// The friction combine mode, controls how friction is computed for multiple materials.
+    /// </summary>
+    PhysicsCombineMode FrictionCombineMode = PhysicalMaterial_FrictionCombineMode;
+
+    /// <summary>
+    /// If set we will use the FrictionCombineMode of this material, instead of the FrictionCombineMode found in the Physics settings. 
+    /// </summary>
+    bool OverrideFrictionCombineMode = PhysicalMaterial_OverrideFrictionCombineMode;
+
+    /// <summary>
+    /// The restitution or 'bounciness' of this surface, between 0 (no bounce) and 1 (outgoing velocity is same as incoming).
+    /// </summary>
+    float Restitution = PhysicalMaterial_Restitution;
+
+    /// <summary>
+    /// The restitution combine mode, controls how restitution is computed for multiple materials.
+    /// </summary>
+    PhysicsCombineMode RestitutionCombineMode = PhysicalMaterial_RestitutionCombineMode;
+
+    /// <summary>
+    /// If set we will use the RestitutionCombineMode of this material, instead of the RestitutionCombineMode found in the Physics settings.
+    /// </summary>
+    bool OverrideRestitutionCombineMode = PhysicalMaterial_OverrideRestitutionCombineMode;
+
+public:
+
+    /// <summary>
+    /// Gets the PhysX material.
+    /// </summary>
+    /// <returns>The native material object.</returns>
+    PxMaterial* GetPhysXMaterial();
+
+    /// <summary>
+    /// Updates the PhysX material (after any property change).
+    /// </summary>
+    void UpdatePhysXMaterial();
+
+public:
+
+    // [ISerializable]
+    void Serialize(SerializeStream& stream, const void* otherObj) override;
+    void Deserialize(DeserializeStream& stream, ISerializeModifier* modifier) override;
+};