#ifndef _UNIT_H
#define _UNIT_H

#include <set>

#include "ps/CStr.h"

class CModel;
class CObjectEntry;
class CObjectManager;
class CEntity;
class CSkeletonAnim;
class CStrW;

/////////////////////////////////////////////////////////////////////////////////////////////
// CUnit: simple "actor" definition - defines a sole object within the world
class CUnit
{
private:
	// Private constructor. Needs complete list of selections for the variation.
	CUnit(CObjectEntry* object, CEntity* entity, CObjectManager& objectManager,
		const std::set<CStr>& actorSelections);

public:
	// Attempt to create a unit with the given actor, attached to an entity
	// (or NULL), with a set of suggested selections (with the rest being randomised).
	// Returns NULL on failure.
 	static CUnit* Create(const CStr& actorName, CEntity* entity,
		const std::set<CStr>& selections, CObjectManager& objectManager);

	// destructor
	~CUnit();

	// get unit's template object; never NULL
	CObjectEntry* GetObject() const { return m_Object; }
	// get unit's model data; never NULL
	CModel* GetModel() const { return m_Model; }
	// get actor's entity; can be NULL
	CEntity* GetEntity() const { return m_Entity; }

	// Put here as it conveniently references both the model and the ObjectEntry
	void ShowAmmunition();
	void HideAmmunition();

	// Sets the animation a random one matching 'name'. If none is found,
	// sets to idle instead. Applies recursively to props.
	// SetEntitySelection(name) should typically be used before this.
	bool SetRandomAnimation(const CStr& name, bool once = false, float speed = 0.0f);

	// Returns a random animation matching 'name'. If none is found,
	// returns idle instead.
	CSkeletonAnim* GetRandomAnimation(const CStr& name);

	// Sets the entity-selection, and updates the unit to use the new
	// actor variation.
	void SetEntitySelection(const CStr& selection);

	// Returns whether the currently active animation is one of the ones
	// matching 'name'.
	bool IsPlayingAnimation(const CStr& name);

	// Set player ID of this unit (and the attached entity and actor)
	void SetPlayerID(int id);

	// Get player ID of this unit
	int GetPlayerID() { return m_PlayerID; }

	// Most units have a hopefully-unique ID number, so they can be referred to
	// persistently despite saving/loading maps. Default for new units is -1; should
	// usually be set to CUnitManager::GetNewID() after creation.
	int GetID() const { return m_ID; }
	void SetID(int id) { m_ID = id; }

	const std::set<CStr>& GetActorSelections() const { return m_ActorSelections; }
	
	void SetActorSelections(const std::set<CStr>& selections);

private:
	// object from which unit was created
	CObjectEntry* m_Object;
	// object model representation
	CModel* m_Model;
	// the entity that this actor represents, if any
	CEntity* m_Entity;
	// player id of this unit (only read for graphical effects), or -1 if unspecified
	int m_PlayerID;

	// unique (per map) ID number for units created in the editor, as a
	// permanent way of referencing them. -1 for non-editor units.
	int m_ID;

	// actor-level selections for this unit
	std::set<CStr> m_ActorSelections;
	// entity-level selections for this unit
	std::set<CStr> m_EntitySelections;

	// object manager which looks after this unit's objectentry
	CObjectManager& m_ObjectManager;

	void ReloadObject();

	NO_COPY_CTOR(CUnit);
};

#endif