GameRenderer API

class GameRenderer

static const int NUM_LIGHT_TEXTURES = 4;

static bool anaglyph3d;      // Enable 3D anaglyph rendering
static int anaglyphPass;     // Current anaglyph render pass (0 or 1)

GameRenderer(Minecraft *mc);

void render(float a, bool bFirst);

float partialTick = calculatePartialTick();
gameRenderer->render(partialTick, true);

void renderLevel(float a);
void renderLevel(float a, __int64 until);

void setupCamera(float a, int eye);

// Setup camera for main view
gameRenderer->setupCamera(partialTick, 0);

// Setup for VR/anaglyph right eye
if (GameRenderer::anaglyph3d) {
    GameRenderer::anaglyphPass = 1;
    gameRenderer->setupCamera(partialTick, 1);
}

void pick(float a);

void zoomRegion(double zoom, double xa, double ya);
void unZoomRegion();

void SetFovVal(float fov);
float GetFovVal();

// Set FOV to 90 degrees
gameRenderer->SetFovVal(90.0f);

// Get current FOV
float currentFov = gameRenderer->GetFovVal();

void setupGuiScreen(int forceScale = -1);

// Setup GUI rendering with auto-scale
gameRenderer->setupGuiScreen();

// Render GUI elements
screen->render(mouseX, mouseY, partialTick);

// Setup for forced 2x scale
gameRenderer->setupGuiScreen(2);

int getLightTexture(int iPad, Level *level);

void turnOnLightLayer(double alpha);
void turnOffLightLayer(double alpha);

void updateLightTexture(float a);

void renderSnowAndRain(float a);

ItemInHandRenderer *itemInHandRenderer;

// Render the player's held item
gameRenderer->itemInHandRenderer->render(player, partialTick);

void updateAllChunks();

void EnableUpdateThread();
void DisableUpdateThread();

// Enable background chunk updates
gameRenderer->EnableUpdateThread();

// Disable when exiting level
gameRenderer->DisableUpdateThread();

void tick(bool bFirst);

// In main game loop
if (tickCount % 1 == 0) {
    gameRenderer->tick(true);
}

static void AddForDelete(byte *deleteThis);
static void AddForDelete(SparseLightStorage *deleteThis);
static void AddForDelete(CompressedTileStorage *deleteThis);
static void AddForDelete(SparseDataStorage *deleteThis);
static void FinishedReassigning();

// Queue chunk data for deletion
GameRenderer::AddForDelete(oldLightStorage);

// After chunk reassignment is complete
GameRenderer::FinishedReassigning();

// Main render loop
void renderGame(float partialTick) {
    // Update game state
    gameRenderer->tick(true);
    
    // Pick what player is looking at
    gameRenderer->pick(partialTick);
    
    // Setup camera for 3D world
    gameRenderer->setupCamera(partialTick, 0);
    
    // Render the level
    gameRenderer->renderLevel(partialTick);
    
    // Render weather
    gameRenderer->renderSnowAndRain(partialTick);
    
    // Setup for GUI/HUD rendering
    gameRenderer->setupGuiScreen();
    
    // Render HUD
    gui->render(partialTick);
}

// Third-person camera with smooth interpolation
class GameRenderer {
private:
    SmoothFloat smoothTurnX;      // Smooth camera rotation X
    SmoothFloat smoothTurnY;      // Smooth camera rotation Y
    SmoothFloat smoothDistance;   // Third-person distance
    SmoothFloat smoothRotation;   // Camera rotation around player
    SmoothFloat smoothTilt;       // Camera tilt angle
    SmoothFloat smoothRoll;       // Camera roll (for effects)
    
    float cameraRoll;             // Current camera roll
    float cameraRollO;            // Previous camera roll
    
    float fovOffset;              // FOV modification (sprint, etc.)
    float fovOffsetO;             // Previous FOV offset
};

// FOV changes when sprinting, using bow, underwater, etc.
float baseFov = gameRenderer->GetFovVal();
float effectiveFov = baseFov + fovOffset; // Modified by game state

// Light texture arrays (one per player in split-screen)
int lightTexture[NUM_LIGHT_TEXTURES];
intArray lightPixels[NUM_LIGHT_TEXTURES];

// Updates lighting based on:
// - Time of day (sun/moon position)
// - Dimension (Nether has no day/night)
// - Player effects (night vision)
// - Sky light level
// - Brightness setting

// Typical integration
Minecraft* mc = /* ... */;
GameRenderer* gameRenderer = new GameRenderer(mc);
LevelRenderer* levelRenderer = new LevelRenderer(mc, textures);

// Render frame
void renderFrame(float partialTick) {
    // GameRenderer coordinates the rendering
    gameRenderer->setupCamera(partialTick, 0);
    
    // Update lighting
    gameRenderer->updateLightTexture(partialTick);
    
    // LevelRenderer does the actual level rendering
    levelRenderer->render(player, 0, partialTick, true);
    levelRenderer->render(player, 1, partialTick, false);
    
    // Weather effects
    gameRenderer->renderSnowAndRain(partialTick);
    
    // GUI
    gameRenderer->setupGuiScreen();
    renderHUD();
}

// Frame timing
private:
    __int64 lastActiveTime;
    __int64 lastNsTime;