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#ifndef PHYSICS_WORLD_HH

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#define PHYSICS_WORLD_HH

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#include <ClanLib/display.h>

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#include <ClanLib/core.h>

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#include <algorithm>

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#include <functional>

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#include <cmath>

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#include "Terrain.hh"          

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class PhysicsWorld;

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#include "PhysicsObject.hh"

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#include "Vector.hh"

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#include "Config.hh"

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#include "Projectile.hh"

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/**

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* PhysicsWorld class. PhysicsWorld contains PhysicsObjects that are

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* simulated in the PhysicsWorld.

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*/

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class PhysicsWorld : public Terrain {

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    friend class PhysicsObject;

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private:

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    CL_Timer tick_timer;

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    uint32_t tick_counter;

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    //    Terrain terrain;

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protected:

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    std::list<PhysicsObject*> players;

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    std::list<Shot*> projectiles;

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//    std::vector<PhysicsObject*> objects;

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    // Contains connections between signals and slots

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    CL_SlotContainer slots;

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    // TODO: Should these be somewhere else?

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    Vector dimensions;

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    Vector gravity;

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public:

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    // TODO: Replace addObject with these?

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    //void addPlayerObject(PlayerObject *object);

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    //void addProjectileObject(ProjectileObject *object);

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    /**

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     * Add object to the PhysicsWorld.

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     *

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     * @param object Pointer to the PhysicsObject to add.

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     */

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    void addPlayerObject(PhysicsObject *object);

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    void addProjectile(Shot *projectile);

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    /**

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     * Advance one time step in physics simulation.

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     */

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    void tick();

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    /**

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     * Get current tick in physics simulation.

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     *

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     * @return tick Current simulation tick.

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     */

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    uint32_t getTick();

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    virtual void draw(CL_GraphicContext *gc);

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    // TODO This should probably be protected or in GameStat or in GameStatee

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};

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#endif