125 lines
3.9 KiB
C++
125 lines
3.9 KiB
C++
/* Copyright (C) 2009 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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// Projectile.h
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//
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// Simple class that represents a single projectile in the simulation.
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#ifndef INCLUDED_PROJECTILE
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#define INCLUDED_PROJECTILE
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#include "maths/Vector3D.h"
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#include "ps/Vector2D.h"
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#include "scripting/ScriptableObject.h"
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#include "scripting/DOMEvent.h"
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#include "ScriptObject.h"
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#include "ps/Game.h"
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#include "ps/World.h"
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class CProjectileManager;
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class CModel;
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class CEntity;
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class CProjectile : public CJSObject<CProjectile>, public IEventTarget
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{
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friend class CProjectileManager;
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friend class CJSObject<CProjectile>;
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CModel* m_Actor;
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CVector3D m_Position;
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CVector2D m_Axis;
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CVector3D m_Position_Previous;
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CVector3D m_Position_Graphics;
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// Horizontal and vertical velocities
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float m_Speed_H;
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float m_Speed_V;
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float m_Speed_V_Previous;
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CEntity* m_Originator;
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CScriptObject m_ImpactEventHandler;
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CScriptObject m_MissEventHandler;
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CProjectile( const CModel* Actor, const CVector3D& Position, const CVector3D& Target, float Speed, CEntity* Originator, const CScriptObject& ImpactScript, const CScriptObject& MissScript );
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~CProjectile();
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// Updates gameplay information for the specified timestep. Returns 'false' if the projectile should be removed from the world.
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bool Update( int timestep_millis );
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// Updates graphical information for a point timestep_millis after the previous simulation frame (and before the current one)
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void Interpolate( int timestep_millis );
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// Scripty things.
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public:
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static void ScriptingInit();
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static JSBool Construct( JSContext* cx, JSObject* obj, uintN argc, jsval* argv, jsval* rval );
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JSObject* GetScriptExecContext( IEventTarget* UNUSED(target) ) { return( GetScript() ); }
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inline CModel* GetModel() const { return( m_Actor ); }
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};
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class CEventProjectileImpact : public CScriptEvent
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{
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CEntity* m_Originator;
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CEntity* m_Impact;
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CVector3D m_Position;
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public:
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CEventProjectileImpact( CEntity* Originator, CEntity* Impact, const CVector3D& Position );
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};
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class CEventProjectileMiss : public CScriptEvent
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{
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CEntity* m_Originator;
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CVector3D m_Position;
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public:
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CEventProjectileMiss( CEntity* Originator, const CVector3D& Position );
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};
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// TODO: Maybe roll this (or at least the graphics bit) into the particle system?
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// Initially this had g_UnitMan managing the models and g_EntityManager holding the
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// projectiles themselves. This way may be less confusing - I'm not sure.
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class CProjectileManager
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{
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friend class CProjectile;
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public:
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CProjectileManager();
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~CProjectileManager();
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void DeleteAll();
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void UpdateAll( int timestep );
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void InterpolateAll( double frametime );
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inline const std::list<CProjectile*>& GetProjectiles() { return m_Projectiles; }
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CProjectile* AddProjectile( const CModel* Actor, const CVector3D& Position, const CVector3D& Target, float Speed, CEntity* Originator, const CScriptObject& ImpactScript, const CScriptObject& MissScript );
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// Only if you have some reason to prematurely get rid of a projectile.
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// Under normal circumstances, it will delete itself when it hits something.
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void DeleteProjectile( CProjectile* p );
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private:
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// Keep this so we can go from relative->absolute offsets in interpolate.
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int m_LastTurnLength;
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// Maintain a list of the projectiles in the world
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std::list<CProjectile*> m_Projectiles;
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};
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#endif
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