//////////////////////////////////////////////////////////////////////////////
// This file is part of the Journey MMORPG client                           //
// Copyright © 2015-2016 Daniel Allendorf                                   //
//                                                                          //
// This program is free software: you can redistribute it and/or modify     //
// it under the terms of the GNU Affero General Public License as           //
// published by the Free Software Foundation, either version 3 of the       //
// License, or (at your option) any later version.                          //
//                                                                          //
// This program is distributed in the hope that it will be useful,          //
// but WITHOUT ANY WARRANTY; without even the implied warranty of           //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            //
// GNU Affero General Public License for more details.                      //
//                                                                          //
// You should have received a copy of the GNU Affero General Public License //
// along with this program.  If not, see <http://www.gnu.org/licenses/>.    //
//////////////////////////////////////////////////////////////////////////////
#pragma once
#include "Player.h"

namespace jrc
{
    // Base class for player states
    class PlayerState
    {
    public:
        virtual ~PlayerState(){}

        // Actions taken when transitioning into the state.
        virtual void initialize(Player& player) const = 0;
        // How to handle inputs while in the state.
        virtual void send_action(Player& player, KeyAction::Id action, bool pressed) const = 0;
        // Actions taken in the player's update method, before physics are applied.
        virtual void update(Player& player) const = 0;
        // Transition into a new state after physics have been applied.
        virtual void update_state(Player& player) const = 0;

    protected:
        // Play the jumping sound.
        void play_jumpsound() const;
    };

    // The initial state, determines which state the player should be in.
    class PlayerNullState : public PlayerState
    {
    public:
        void initialize(Player&) const override {}
        void send_action(Player&, KeyAction::Id, bool) const override {}
        void update(Player&) const override {}

        void update_state(Player& player) const override;
    };

    // The standing state.
    class PlayerStandState : public PlayerState
    {
    public:
        void initialize(Player& player) const override;
        void send_action(Player& player, KeyAction::Id ka, bool down) const override;
        void update(Player&) const override;
        void update_state(Player& player) const override;
    };

    // The walking state.
    class PlayerWalkState : public PlayerState
    {
        void initialize(Player& player) const override;
        void send_action(Player& player, KeyAction::Id ka, bool down) const override;
        void update(Player& player) const override;
        void update_state(Player& player) const override;

    private:
        bool haswalkinput(const Player& player) const;
    };

    // The falling state.
    class PlayerFallState : public PlayerState
    {
    public:
        void initialize(Player& player) const override;

        void send_action(Player& player, KeyAction::Id ka, bool down) const override;
        void update(Player& player) const override;

        void update_state(Player& player) const override;
    };

    // The prone state (lying down).
    class PlayerProneState : public PlayerState
    {
    public:
        void initialize(Player&) const override {}

        void send_action(Player& player, KeyAction::Id ka, bool down) const override;
        void update(Player&) const override;

        void update_state(Player&) const override {}
    };

    // The sitting state.
    class PlayerSitState : public PlayerState
    {
    public:
        void initialize(Player&) const override {}

        void send_action(Player& player, KeyAction::Id ka, bool down) const override;

        void update(Player&) const override {}
        void update_state(Player&) const override {}
    };

    // The flying or swimming state.
    class PlayerFlyState : public PlayerState
    {
        void initialize(Player& player) const override;
        void send_action(Player& player, KeyAction::Id ka, bool down) const override;
        void update(Player& player) const override;
        void update_state(Player& player) const override;
    };

    // The climbing state.
    class PlayerClimbState : public PlayerState
    {
    public:
        void initialize(Player& player) const override;
        void send_action(Player& player, KeyAction::Id ka, bool down) const override;
        void update(Player& player) const override;
        void update_state(Player& player) const override;

    private:
        void cancel_ladder(Player& player) const;
    };
}