Game.h

// Snake Game, Copyright LifeEXE. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Types.h"
#include "Utils.h"
 
namespace SnakeGame
{
 
class Grid;
class Snake;
class Food;
 
class SNAKEGAME_API Game
{
public:
    Game(const Settings& settings, const IPositionRandomizerPtr& randomizer = MakeShared<PositionRandomizer>());
 
    TSharedPtr<Grid> grid() const { return m_grid; }
 
    TSharedPtr<Snake> snake() const { return m_snake; }
 
    TSharedPtr<Food> food() const { return m_food; }
 
    void update(float deltaSeconds, const Input& input);
 
    uint32 score() const { return m_score; }
 
    float gameTime() const { return m_gameTime; }
 
    void subscribeOnGameplayEvent(GameplayEventCallback callback);
 
private:
    const Settings c_settings;
    TSharedPtr<Grid> m_grid;
    TSharedPtr<Snake> m_snake;
    TSharedPtr<Food> m_food;
 
    float m_moveSeconds{0.0f};
    bool m_gameOver{false};
    uint32 m_score{0};
    float m_gameTime{0.0f};
 
    TArray<GameplayEventCallback> m_gameplayEventCallbacks;
 
    void updateGrid();
    bool updateTime(float deltaSeconds);
    bool died(const Position& prevTailPosition) const;
 
    void generateFood();
    bool foodTaken() const;
 
    FORCEINLINE void dispatchEvent(GameplayEvent Event);
};
}  // namespace SnakeGame