urho3d/Source/Samples/11_Physics/Physics.h

//
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#pragma once

#include "Sample.h"

namespace Urho3D
{

class Node;
class Scene;

}

/// Physics example.
/// This sample demonstrates:
///     - Creating both static and moving physics objects to a scene
///     - Displaying physics debug geometry
///     - Using the Skybox component for setting up an unmoving sky
///     - Saving a scene to a file and loading it to restore a previous state
class Physics : public Sample
{
    OBJECT(Physics);

public:
    /// Construct.
    Physics(Context* context);

    /// Setup after engine initialization and before running the main loop.
    virtual void Start();

private:
    /// Construct the scene content.
    void CreateScene();
    /// Construct an instruction text to the UI.
    void CreateInstructions();
    /// Set up a viewport for displaying the scene.
    void SetupViewport();
    /// Subscribe to application-wide logic update and post-render update events.
    void SubscribeToEvents();
    /// Read input and moves the camera.
    void MoveCamera(float timeStep);
    /// Spawn a physics object from the camera position.
    void SpawnObject();
    /// Handle the logic update event.
    void HandleUpdate(StringHash eventType, VariantMap& eventData);
    /// Handle the post-render update event.
    void HandlePostRenderUpdate(StringHash eventType, VariantMap& eventData);
    
    /// Scene.
    SharedPtr<Scene> scene_;
    /// Camera scene node.
    SharedPtr<Node> cameraNode_;
    /// Camera yaw angle.
    float yaw_;
    /// Camera pitch angle.
    float pitch_;
    /// Flag for drawing debug geometry.
    bool drawDebug_;
};