Collision.h

//--------------------------------------------------------------------------------------
// Collision.h
//
// Advanced Technology Group (ATG)
// Copyright (C) Microsoft Corporation. All rights reserved.
//--------------------------------------------------------------------------------------

#pragma once

#include "DeviceResources.h"
#include "StepTimer.h"
#include "ControllerHelp.h"
#include "OrbitCamera.h"


// A basic sample implementation that creates a D3D11 device and
// provides a render loop.
class Sample : public DX::IDeviceNotify
{
public:

    Sample();

    // Initialization and management
    void Initialize(IUnknown* window, int width, int height, DXGI_MODE_ROTATION rotation);

    // Basic render loop
    void Tick();

    // IDeviceNotify
    virtual void OnDeviceLost() override;
    virtual void OnDeviceRestored() override;

    // Messages
    void OnActivated();
    void OnDeactivated();
    void OnSuspending();
    void OnResuming();
    void OnWindowSizeChanged(int width, int height, DXGI_MODE_ROTATION rotation);
    void ValidateDevice();

    // Properties
    void GetDefaultSize( int& width, int& height ) const;

private:

    void Update(DX::StepTimer const& timer);
    void Render();

    void Clear();

    void CreateDeviceDependentResources();
    void CreateWindowSizeDependentResources();

    void InitializeObjects();
    void Animate(double fTime);
    void Collide();
    void SetViewForGroup(int group);

    // Device resources.
    std::unique_ptr<DX::DeviceResources>    m_deviceResources;

    // Rendering loop timer.
    DX::StepTimer                           m_timer;

    // Input devices.
    std::unique_ptr<DirectX::GamePad>       m_gamePad;
    std::unique_ptr<DirectX::Keyboard>      m_keyboard;
    std::unique_ptr<DirectX::Mouse>         m_mouse;

    DirectX::GamePad::ButtonStateTracker    m_gamePadButtons;
    DirectX::Keyboard::KeyboardStateTracker m_keyboardButtons;

    bool                                    m_ctrlConnected;

    // Rendering objects.
    std::unique_ptr<DirectX::CommonStates>  m_states;
    std::unique_ptr<DirectX::BasicEffect>   m_effect;
    std::unique_ptr<DirectX::PrimitiveBatch<DirectX::VertexPositionColor>> m_batch;
    std::unique_ptr<DirectX::SpriteFont>    m_font;
    std::unique_ptr<DirectX::SpriteFont>    m_ctrlFont;
    std::unique_ptr<DirectX::SpriteBatch>   m_sprites;

    Microsoft::WRL::ComPtr<ID3D11InputLayout> m_layout;

    std::wstring                            m_name;

    // Sample Help.
    std::unique_ptr<ATG::Help>              m_help;
    bool                                    m_showHelp;

    // View camera.
    DX::OrbitCamera                         m_camera;

    // Collision sample.
    using BoundingSphere = DirectX::BoundingSphere;
    using BoundingOrientedBox = DirectX::BoundingOrientedBox;
    using BoundingBox = DirectX::BoundingBox;
    using BoundingFrustum = DirectX::BoundingFrustum;
    using ContainmentType = DirectX::ContainmentType;
    using Vector3 = DirectX::SimpleMath::Vector3;

    struct CollisionSphere
    {
        BoundingSphere sphere;
        ContainmentType collision;
    };

    struct CollisionBox
    {
        BoundingOrientedBox obox;
        ContainmentType collision;
    };

    struct CollisionAABox
    {
        BoundingBox aabox;
        ContainmentType collision;
    };

    struct CollisionFrustum
    {
        BoundingFrustum frustum;
        ContainmentType collision;
    };

    struct CollisionTriangle
    {
        Vector3 pointa;
        Vector3 pointb;
        Vector3 pointc;
        ContainmentType collision;
    };

    struct CollisionRay
    {
        Vector3 origin;
        Vector3 direction;
    };

    static const size_t c_groupCount = 4;

    BoundingFrustum     m_primaryFrustum;
    BoundingOrientedBox m_primaryOrientedBox;
    BoundingBox         m_primaryAABox;
    CollisionRay        m_primaryRay;

    CollisionSphere     m_secondarySpheres[c_groupCount];
    CollisionBox        m_secondaryOrientedBoxes[c_groupCount];
    CollisionAABox      m_secondaryAABoxes[c_groupCount];
    CollisionTriangle   m_secondaryTriangles[c_groupCount];

    CollisionAABox      m_rayHitResultBox;

    Vector3        m_cameraOrigins[c_groupCount];
};