AppState.h

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#pragma once
 
#include "SDL.h"
#include "SampleInterfaces.h"
 
#include <memory>
#include <string>
#include <vector>
 
class TestCase;
class Sample;
class InputGeom;
 
struct AppState
{
    SDL_Window* window;
    SDL_GLContext glContext;
 
    double projectionMatrix[16];
    int viewport[4];
 
    // Drawable width vs logical width (important for high-dpi screens)
    int width;
    int height;
    int drawableWidth;
    int drawableHeight;
 
    // Recast data, samples, and test cases
    BuildContext buildContext;
    std::unique_ptr<InputGeom> inputGeometry;
    std::unique_ptr<Sample> sample;
    std::unique_ptr<TestCase> testCase;
 
    // Time
    float timeAcc = 0.0f;
    Uint32 prevFrameTime = 0;
 
    // Input
    int mousePos[2]{0, 0};
    int origMousePos[2]{0, 0};  // Used to compute mouse movement totals across frames.
 
    // Camera
    float cameraEulers[2]{45, -45};
    float cameraPos[3] = {0, 0, 0};  // world space
    float camr = 1000;
    float origCameraEulers[2] = {0, 0};  // Used to compute rotational changes across frames.
    float scrollZoom = 0;
 
    // Movement
    float moveFront = 0.0f;
    float moveBack = 0.0f;
    float moveLeft = 0.0f;
    float moveRight = 0.0f;
    float moveUp = 0.0f;
    float moveDown = 0.0f;
 
    // Input state
    bool isRotatingCamera = false;
    bool movedDuringRotate = false;
    bool mouseOverMenu = false;
 
    // Raycasts
    float rayStart[3];  // world space
    float rayEnd[3];    // world space
 
    // UI state
    int sampleIndex = -1;
    std::string meshName = "Choose Mesh...";
    bool showMenu = true;
    bool showLog = false;
    bool showTools = true;
    bool showTestCases = false;
    int logScroll = 0;
 
    // Files
    std::vector<std::string> files;
    std::string meshesFolder = "Meshes";
    std::string testCasesFolder = "TestCases";
 
    void resetCamera();
    void updateWindowSize();
    void updateUIScale() const;
    void worldToScreen(float x, float y, float z, float* screenX, float* screenY) const;
};