SecondScreenPreview.h

Go to the documentation of this file.

#pragma once
 
#if EDITOR
 
#include <cstdint>
#include "imgui.h"
 
class World;
class Image;
class Scene;
 
class SecondScreenPreview
{
public:
    void Enable();
    void Disable();
    void Update(float deltaTime);
    void Render();
    void DrawPanel();
 
    void BeginInputRemap();
    void EndInputRemap();
 
    bool IsEnabled() const { return mEnabled; }
 
private:
    struct ScreenState
    {
        World* mWorld = nullptr;
        Image* mColorTarget = nullptr;
        Image* mDepthTarget = nullptr;
        ImTextureID mImGuiTexId = 0;
        Scene* mCurrentScene = nullptr;
    };
 
    bool mEnabled = false;
    ScreenState mTop;
    ScreenState mBottom;
 
    // Bottom screen image rect (captured by DrawPanel, used by BeginInputRemap)
    ImVec2 mBottomImageMin = {0, 0};
    ImVec2 mBottomImageMax = {0, 0};
 
    // Saved state for input remap
    int32_t mSavedMouseX = 0;
    int32_t mSavedMouseY = 0;
    uint32_t mSavedVpX = 0;
    uint32_t mSavedVpY = 0;
    uint32_t mSavedVpW = 0;
    uint32_t mSavedVpH = 0;
    bool mInputRemapActive = false;
 
    static constexpr uint32_t kTopWidth = 400;
    static constexpr uint32_t kTopHeight = 240;
    static constexpr uint32_t kBottomWidth = 320;
    static constexpr uint32_t kBottomHeight = 240;
 
    void CreateScreenTargets(ScreenState& screen, uint32_t width, uint32_t height, const char* debugName);
    void DestroyScreenTargets(ScreenState& screen);
    Scene* FindSceneForScreen(uint8_t targetScreen);
    void UpdateScreen(ScreenState& screen, uint8_t targetScreen, float deltaTime);
};
 
SecondScreenPreview* GetSecondScreenPreview();
 
#endif