game.h

#pragma once
#include"./SDL2-2.0.10/include/SDL.h"
#include"./SDL2-2.0.10/include/SDL_main.h"
#include "sprite.h"
#include "car.h"
#include "map.h"
// map scaling factor
#define SCALE 20
#define MAP_WIDTH (10*SCALE)
#define MAP_HEIGHT (20*SCALE)
#define START_ROAD_WIDTH (4*SCALE)
#define MIN_ROAD_WIDTH (4*SCALE)
#define GENERATION_DELAY (1*SCALE)
#define MAX_ISLAND_WIDTH (1*SCALE)
#define MAX_ISLAND_LENGTH (10*SCALE)
#define MIN_ISLAND_LENGHT (1*SCALE)
#define MIN_ISLAND_SPACE (10*SCALE)

#define SCORE_DIVIDER 100
#define START_LIVES 3
#define MISSLE_SPEED 500
#define SOFT_CRASH_SPEED 400
#define IMMORTAL_TIMER 5
#define DIFFICULTY 200
#define ENEMY_MISSILE_SPEED 150
#define POINTS_FOR_NEW_CAR 200

// max Y distance from screen before sprite is deleted
#define CLEAN_SPRITES_DISTANCE 500
#define CAR_SPAWN_DISTANCE 200
#define SPEED_DIFFERENCE 700
#define PENALTY_TIME 5
#define ENEMY_POINTS 10
#define START_SPEED 150
#define MIN_CAR_SPEED 100
#define MAX_CAR_SPEED 1100
#define CAR_SPAWN_RATE 90
#define POWER_UP_SPAWN_RATE 1000
#define MULTI_MISSILE_AMOUNT 3
#define BOMB_AMOUNT 5


#define PLAYER_SPRITE 0
#define CRASH_SPRITE 1
#define MISSLE_SPRITE 2
#define BOMB_SPRITE 3
#define LASER_SPRITE 4
#define CARS_SPRITES_START 5
#define ENEMY_SPRITES_START 9

enum class State : char {
	playing,
	paused,
	dead,
	menu,
	quit,
	finished
};

class Game {
private:
	Car* *cars;
	Car* *missiles;
	Player* player;
	int carsAmount = 0, missilesAmount = 0, mapWidth, mapHeight, screenWidth, screenHeight,
		frame = 0, lives, rightRoadBorder, leftRoadBorder, trafficIsland, mapUpdate, islandLength;
	double worldTime = 0, distance = 0, distanceDiff = 0, score, lastShot, penaltyTime, immortalTime;
	Map* map;
	State state;
	SDL_Surface** sprites; int spritesAmount;
public:
	Game(const int screenWidth, const int screenHeight, const int mapWidth = MAP_WIDTH, const int mapHeight = MAP_HEIGHT);
	~Game();
	void NewGame();
	
	Player* GetPlayer();
	void NewPlayer();
	
	Car* GetCar(const int index);
	Car** GetCars();
	int GetCarsAmount();
	void AddCar(Car* car);
	void RemoveCar(const int index);

	Car* GetMissile(const int index);
	Car** GetMissiles();
	int GetMissilesAmount();
	void AddMissile(Car* missle);
	void RemoveMissile(const int index);
	
	double GetTime();
	double GetDistance();
	int GetScore();
	int GetLives();
	void PushCar(Car* pusingCar, Car* pushedCar, bool destroyCars = false, bool player = false);

	void Update(const double delta);
	void RemoveUnncessarySprites();
	void NewMap();
	MapTile CheckForCollision();
	void Crash();
	void Shoot();
	void PowerUp();
	bool WeaponReady();
	double GetShootCooldown(bool percent = false);
	void EnemyAction();
	void AddPoints(const double points);
	void CarDestroyed(Car* car, bool player = true, CarType type = CarType::crashed);
	
	void UpdateMap();
	void CalculateRoadBorders();
	MapTile GetMapTile(const int x, const int y);
	Map* GetMap();
	void SetSprites(SDL_Surface** sprites, const int amount);
	void SetMap(Map* map);
	void SetMapTile(const int x, const int y, const MapTile value);
	int GetMapWidth();
	int GetMapHeight();
	void GenerateNewCar(bool onScreen = false);

	State GetState();
	void SetState(State state);

	int Random(int from, int to);
	void SaveToFile(FILE* file);
	void LoadFromFile(FILE* file);
};