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#ifndef GAMESTATE_HH

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#define GAMESTATE_HH

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#include "Physics.hh"

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#include "Input.hh"

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#include <list>

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#include <stdexcept>

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// in cells/kg

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const uint16_t MAP_WIDTH = 800;

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const uint16_t MAP_HEIGHT = 600;

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const float MAP_GRAVITY = 1200.0;

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const float PLAYER_MASS = 10.0;

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const float PLAYER_MOVE_FORCE = 5000.0;

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const float PLAYER_INITIAL_X = 400.0;

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const float PLAYER_INITIAL_Y = 300.0;

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// forward-declare GameState

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class GameState;

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class Player : public PhysicsObject {

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    protected:

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        GameState &state;

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        bool visible;

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    public:

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        Player(GameState &state, Vector position, bool visible) : 

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            PhysicsObject((PhysicsWorld &) state, PLAYER_MASS, position, Vector(0, 0)), state(state), visible(visible) {

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			std::vector<Vector> shape(4);

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			// Initialize the shape of the player (salmiakki shape)

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			setShape(shape);		

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		}

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};

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class LocalPlayer : public Player {

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    protected:

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        LocalPlayer (GameState &state, Vector pos, bool visible) : Player(state, pos, visible) { }

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    public:

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        virtual void handleMove (PlayerInput_Move input);

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};

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class RemotePlayer : public Player {

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    protected:

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        RemotePlayer (GameState &state, Vector pos, bool visible) : Player(state, pos, visible) { }

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};

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class GameState : public PhysicsWorld {

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    public:

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        std::list<Player*> player_list;

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        // only one local player is supported

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        LocalPlayer *local_player;

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        GameState (void) : PhysicsWorld(Vector(0, MAP_GRAVITY), Vector(MAP_WIDTH, MAP_HEIGHT)), local_player(NULL) {

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        }

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        /*

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         * This will return NULL if we don't have a local player - yet

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         */

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        LocalPlayer *getLocalPlayer (void) {

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            return local_player;

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        }

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        void newLocalPlayer (LocalPlayer *player) {

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            if (local_player)

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                throw std::logic_error("newLocalPlayer called even though we already have a local player");

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            player_list.push_back(player);

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            local_player = player;

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        }

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        void newRemotePlayer (RemotePlayer *player) {

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            player_list.push_back(player);

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        }

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        void removePlayer (Player *player) {

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            player_list.remove(player);

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        }

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};

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#endif