forked from 0ad/0ad
451 lines
14 KiB
C++
451 lines
14 KiB
C++
// Entity.h
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//
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// Mark Thompson mot20@cam.ac.uk / mark@wildfiregames.com
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//
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// Entity class.
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//
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// Usage: Do not attempt to instantiate this class directly. (See EntityManager.h)
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// Most of the members are trivially obvious; some highlights are:
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//
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// HEntity me: is a reference to this entity. See EntityHandles.h
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//
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// Destroying entities: An entity is destroyed when all references to it expire.
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// It is somewhat unfunny if this happens while a method from this
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// class is still executing. If you need to kill an entity,
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// use CEntity::kill(). If kill() releases the final handle,
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// the entity is placed in the reaper queue and is deleted immediately
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// prior to its next update cycle.
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//
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// CUnit* m_actor: is the visible representation of this entity.
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//
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// snapToGround(): Called every frame, this will ensure the entity never takes flight.
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// updateActorTransforms(): Must be called every time the position of this entity changes.
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// Also remember to update the collision object if you alter the position directly.
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//
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#ifndef ENTITY_INCLUDED
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#define ENTITY_INCLUDED
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#include <deque>
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#include "scripting/ScriptableComplex.h"
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#include "ps/Vector2D.h"
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#include "maths/Vector3D.h"
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#include "EntityOrders.h"
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#include "EntityHandles.h"
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#include "EntityMessage.h"
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#include "ScriptObject.h"
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#include "EntitySupport.h"
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#include "scripting/DOMEvent.h"
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#include "scripting/ScriptCustomTypes.h"
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// JW: must be pulled in because CEntity no longer mirrors CEntityTemplate exactly.
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// some fields have been moved out of CEntity and are accessed via m_base,
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// so CEntityTemplate must be fully defined.
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#include "EntityTemplate.h"
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class CAura;
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//class CEntityTemplate; // see comment above
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class CBoundingObject;
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class CPlayer;
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class CProductionQueue;
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class CSkeletonAnim;
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class CUnit;
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class CTerritory;
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class CEntityFormation;
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//
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enum EntityFlags
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{
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// If this unit has been removed from the gameworld but has still
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// has references.
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ENTF_DESTROYED = 0x0001,
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// State transition in the FSM (animations should be reset)
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ENTF_TRANSITION = 0x0002,
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ENTF_HAS_RALLY_POINT = 0x0004,
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ENTF_HEALTH_DECAY = 0x0008,
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// if set, we destroy them; otherwise, the script does.
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ENTF_DESTROY_NOTIFIERS = 0x0010,
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// is it actually running
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ENTF_IS_RUNNING = 0x0020,
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// if run was issued, it will remain true until it is stopped
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ENTF_SHOULD_RUN = 0x0040,
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// used in SetRun, corrects 1 frame stamina imbalance
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ENTF_TRIGGER_RUN = 0x0080
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};
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// TODO MT: Put this is /some/ sort of order...
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class CEntity : public CJSComplex<CEntity>, public IEventTarget
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{
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friend class CEntityManager;
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typedef STL_HASH_MAP<CStrW, CAura*, CStrW_hash_compare> AuraTable;
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typedef STL_HASH_MAP<int, SEntityAction> ActionTable;
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typedef std::set<CAura*> AuraSet;
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public:
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// The player that owns this entity
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CPlayer* m_player;
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// Intrinsic properties
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CEntityTemplate* m_base;
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// The class types this entity has
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CClassSet m_classes;
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// Production queue
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CProductionQueue* m_productionQueue;
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// Movement properties
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float m_speed;
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float m_turningRadius;
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float m_runSpeed;
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float m_runRegenRate;
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float m_runDecayRate;
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float m_maxActorPitch;
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float m_minActorPitch;
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float m_healthRegenRate;
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float m_healthRegenStart;
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float m_healthDecayRate;
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float m_runMaxRange;
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float m_runMinRange;
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ActionTable m_actions;
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bool m_selected;
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i32 m_grouped;
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int m_formation; // Index of which formation we're in
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int m_formationSlot; // The slot of the above formation
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uint ent_flags;
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bool entf_get(uint desired_flag) const { return (ent_flags & desired_flag) != 0; }
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void entf_set(uint desired_flag) { ent_flags |= desired_flag; }
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void entf_clear(uint desired_flag) { ent_flags &= ~desired_flag; }
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void entf_set_to(uint desired_flag, bool value)
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{
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ent_flags &= ~desired_flag;
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const uint mask = value? ~0u : 0;
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ent_flags |= desired_flag & mask;
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}
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// If this unit is still active in the gameworld - i.e. not a corpse.
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bool m_extant;
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// If this is false, the unit will not be drawn and cannot be interacted with using the mouse.
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bool m_visible;
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int m_frameCheck; //counts the frame
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float m_lastCombatTime;
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float m_lastRunTime;
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// Building to convert to if this is a foundation, or "" otherwise
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CStrW m_building;
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//SP properties
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float m_staminaCurr;
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float m_staminaMax;
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// HP properties
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float m_healthCurr;
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float m_healthMax;
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//Rank properties
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CStr m_rankName;
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// LOS
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int m_los;
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// If the object is a territory centre, this points to its territory
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CTerritory* m_associatedTerritory;
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// Auras
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AuraTable m_auras;
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AuraSet m_aurasInfluencingMe;
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//-- Interpolated property
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CVector3D m_position;
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CVector3D m_position_previous;
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CVector3D m_graphics_position;
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CBoundingObject* m_bounds;
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float m_targetorientation;
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CVector2D m_ahead;
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//-- Interpolated property
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CVector3D m_orientation;
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CVector3D m_orientation_previous;
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CVector3D m_graphics_orientation;
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CVector2D m_orientation_unclamped;
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CVector3D m_rallyPoint; // valid iff ENT_HAS_RALLY_POINT
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// If the actor's current transform data is valid (i.e. the entity hasn't
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// moved since it was last calculated, and the terrain hasn't been changed).
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bool m_actor_transform_valid;
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// Our current collision patch in CEntityManager
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std::vector<CEntity*>* m_collisionPatch;
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//-- Scripts
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// Get script execution contexts - always run in the context of the entity that fired it.
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JSObject* GetScriptExecContext( IEventTarget* target ) { return( ((CEntity*)target)->GetScript() ); }
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CScriptObject m_EventHandlers[EVENT_LAST];
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CUnit* m_actor;
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std::set<CStr8> m_actorSelections;
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int m_lastState; // used in animation FSM
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// Position in the current state's cycle
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static const size_t NOT_IN_CYCLE = (size_t)-1;
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size_t m_fsm_cyclepos; // -cycle_length....cycle_length
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CSkeletonAnim* m_fsm_animation; // the animation we're about to play this cycle,
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size_t m_fsm_anipos; // the time at which we should start playing it.
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size_t m_fsm_anipos2; // for when there are two animation-related events we need to take care of.
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std::deque<CEntityOrder> m_orderQueue;
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std::deque<CEntityListener> m_listeners;
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std::vector<CEntity*> m_notifiers;
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int m_currentNotification; //Current order in the form of a notification code
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int m_currentRequest; //Notification we our notifiers are sending
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std::vector<bool> m_sectorValues;
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private:
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CEntity( CEntityTemplate* base, CVector3D position, float orientation, const std::set<CStr8>& actorSelections, const CStrW* building = 0 );
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uint processGotoHelper( CEntityOrder* current, size_t timestep_milli, HEntity& collide );
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bool processContactAction( CEntityOrder* current, size_t timestep_millis, int transition, SEntityAction* action );
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bool processContactActionNoPathing( CEntityOrder* current, size_t timestep_millis, const CStr& animation, CScriptEvent* contactEvent, SEntityAction* action );
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bool processGeneric( CEntityOrder* current, size_t timestep_milli );
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bool processGenericNoPathing( CEntityOrder* current, size_t timestep_milli );
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bool processProduce( CEntityOrder* order );
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bool processGotoNoPathing( CEntityOrder* current, size_t timestep_milli );
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bool processGoto( CEntityOrder* current, size_t timestep_milli );
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bool processGotoWaypoint( CEntityOrder* current, size_t timestep_milli, bool contact );
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bool processPatrol( CEntityOrder* current, size_t timestep_milli );
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float processChooseMovement( float distance );
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bool shouldRun( float distance ); // Given our distance to a target, can we be running?
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public:
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~CEntity();
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// Handle-to-self.
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HEntity me;
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// Updates gameplay information for the specified timestep
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void update( size_t timestep_millis );
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// Updates graphical information for a point between the last and current simulation frame; 0 < relativeoffset < 1.
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void interpolate( float relativeoffset );
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// Forces update of actor information during next call to 'interpolate'.
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// (Necessary when terrain might move underneath the actor.)
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void invalidateActor();
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// Updates auras
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void UpdateAuras( size_t timestep_millis );
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// Removes entity from the gameworld and deallocates it, but not necessarily immediately.
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void kill();
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// Process initialization
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bool Initialize();
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// Process tick.
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void Tick();
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// Store the player associated with this entity
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void SetPlayer(CPlayer *pPlayer);
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// Retrieve the player associated with this entity
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CPlayer* GetPlayer() { return m_player; }
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// Update collision patch (move ourselves to a new one if necessary)
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void updateCollisionPatch();
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float getAnchorLevel( float x, float z );
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void snapToGround();
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void updateActorTransforms();
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// Getter and setter for the class sets
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jsval getClassSet();
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void setClassSet( jsval value );
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void rebuildClassSet();
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// Things like selection circles and debug info - possibly move to gui if/when it becomes responsible for (and capable of) it.
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void render();
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void renderSelectionOutline( float alpha = 1.0f );
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void renderBars();
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void renderBarBorders();
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void renderHealthBar();
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void renderStaminaBar();
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void renderRank();
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void renderRallyPoint();
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// Utility functions for rendering:
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// Draw rectangle around the given centre, aligned with the given axes
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void drawRect(CVector3D& centre, CVector3D& up, CVector3D& right, float x1, float y1, float x2, float y2);
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void drawBar(CVector3D& centre, CVector3D& up, CVector3D& right,
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float x1, float y1, float x2, float y2,
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SColour col1, SColour col2, float currVal, float maxVal);
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CVector2D getScreenCoords( float height );
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// After a collision, recalc the path to the next fixed waypoint.
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void repath();
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//Calculate stamina points
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void CalculateRegen(float timestep);
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// Reset properties after the entity-template we use changes.
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void loadBase();
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static void initAttributes(const CEntity* _this);
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void reorient(); // Orientation
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void teleport(); // Fixes things if the position is changed by something externally.
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void checkSelection(); // In case anyone tries to select/deselect this through JavaScript.
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void checkGroup(); // Groups
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void checkExtant(); // Existence
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void clearOrders();
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void popOrder(); //Use this if and order has finished instead of m_orderQueue.pop_front()
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void pushOrder( CEntityOrder& order );
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void DispatchNotification( CEntityOrder order, int type );
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int DestroyNotifier( CEntity* target ); //Stop notifier from sending to us
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void DestroyAllNotifiers();
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int findSector( int divs, float angle, float maxAngle, bool negative=true );
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CEntityFormation* GetFormation();
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jsval GetFormationPenalty( JSContext* cx, uintN argc, jsval* argv );
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jsval GetFormationPenaltyBase( JSContext* cx, uintN argc, jsval* argv );
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jsval GetFormationPenaltyType( JSContext* cx, uintN argc, jsval* argv );
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jsval GetFormationPenaltyVal( JSContext* cx, uintN argc, jsval* argv );
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jsval GetFormationBonus( JSContext* cx, uintN argc, jsval* argv );
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jsval GetFormationBonusBase( JSContext* cx, uintN argc, jsval* argv );
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jsval GetFormationBonusType( JSContext* cx, uintN argc, jsval* argv );
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jsval GetFormationBonusVal( JSContext* cx, uintN argc, jsval* argv );
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void DispatchFormationEvent( int type );
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jsval RegisterDamage( JSContext* cx, uintN argc, jsval* argv );
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jsval RegisterOrderChange( JSContext* cx, uintN argc, jsval* argv );
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jsval GetAttackDirections( JSContext* cx, uintN argc, jsval* argv );
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jsval FindSector( JSContext* cx, uintN argc, jsval* argv );
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// Script constructor
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static JSBool Construct( JSContext* cx, JSObject* obj, uint argc, jsval* argv, jsval* rval );
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// Script-bound functions
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jsval ToString( JSContext* cx, uintN argc, jsval* argv );
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bool Kill( JSContext* cx, uintN argc, jsval* argv );
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jsval GetSpawnPoint( JSContext* cx, uintN argc, jsval* argv );
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inline jsval HasRallyPoint( JSContext* cx, uintN argc, jsval* argv );
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inline jsval GetRallyPoint( JSContext* cx, uintN argc, jsval* argv );
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inline jsval SetRallyPoint( JSContext* cx, uintN argc, jsval* argv );
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jsval AddAura( JSContext* cx, uintN argc, jsval* argv );
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jsval RemoveAura( JSContext* cx, uintN argc, jsval* argv );
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jsval SetActionParams( JSContext* cx, uintN argc, jsval* argv );
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jsval TriggerRun( JSContext* cx, uintN argc, jsval* argv );
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jsval SetRun( JSContext* cx, uintN argc, jsval* argv );
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jsval IsRunning( JSContext* cx, uintN argc, jsval* argv );
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jsval GetRunState( JSContext* cx, uintN argc, jsval* argv );
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bool RequestNotification( JSContext* cx, uintN argc, jsval* argv );
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//Just in case we want to explicitly check the listeners without waiting for the order to be pushed
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bool ForceCheckListeners( JSContext* cx, uintN argc, jsval* argv );
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int GetCurrentRequest( JSContext* cx, uintN argc, jsval* argv );
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void CheckListeners( int type, CEntity *target );
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jsval DestroyAllNotifiers( JSContext* cx, uintN argc, jsval* argv );
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jsval DestroyNotifier( JSContext* cx, uintN argc, jsval* argv );
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jsval JSI_GetPlayer();
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void JSI_SetPlayer(jsval val);
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bool IsInFormation( JSContext* UNUSED(cx), uintN UNUSED(argc), jsval* UNUSED(argv) )
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{
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return ( m_formation != 0 ? true : false );
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}
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bool Order( JSContext* cx, uintN argc, jsval* argv, bool Queued );
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inline bool OrderSingle( JSContext* cx, uintN argc, jsval* argv )
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{
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return( Order( cx, argc, argv, false ) );
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}
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inline bool OrderQueued( JSContext* cx, uintN argc, jsval* argv )
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{
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return( Order( cx, argc, argv, true ) );
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}
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bool IsIdle( JSContext* UNUSED(cx), uintN UNUSED(argc), jsval* UNUSED(argv) )
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{
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return( m_orderQueue.empty() );
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}
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bool HasClass( JSContext* cx, uintN argc, jsval* argv )
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{
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debug_assert( argc >= 1 );
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return( m_classes.IsMember( ToPrimitive<CStrW>( cx, argv[0] ) ) );
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}
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jsval TerminateOrder( JSContext* UNUSED(cx), uintN argc, jsval* argv )
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{
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debug_assert( argc >= 1);
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if ( ToPrimitive<bool>( argv[0] ) )
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m_orderQueue.clear();
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else
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m_orderQueue.pop_front();
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return JSVAL_VOID;
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}
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jsval GetHeight( JSContext* UNUSED(cx), uintN UNUSED(argc), jsval* UNUSED(argv) )
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{
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return ToJSVal(m_position.Y);
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}
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static void ScriptingInit();
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NO_COPY_CTOR(CEntity);
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};
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// General entity globals
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// In its current incarnation, inefficient but pretty
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#define SELECTION_TERRAIN_CONFORMANCE
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extern int SELECTION_CIRCLE_POINTS;
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extern int SELECTION_BOX_POINTS;
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extern int SELECTION_SMOOTHNESS_UNIFIED;
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#endif
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