PhysicsParticleObject.h

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    Scorched3D 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 General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////


#if !defined(__INCLUDE_PhysicsParticleObjecth_INCLUDE__)
#define __INCLUDE_PhysicsParticleObjecth_INCLUDE__

#include <common/FixedVector.h>
#include <common/FixedVector4.h>
#include <engine/ScorchedCollisionIds.h>

enum PhysicsParticleType
{
        ParticleTypeNone = 0,
        ParticleTypeShot,
        ParticleTypeBounce,
        ParticleTypeFalling
};

struct PhysicsParticleInfo
{
        PhysicsParticleInfo(
                PhysicsParticleType type,
                unsigned int playerId,
                void *data) :
                type_(type),
                playerId_(playerId),
                data_(data)
        {
        }

        PhysicsParticleType type_;
        unsigned int playerId_;
        void *data_;
};

class PhysicsParticleObject;
class PhysicsParticleObjectHandler
{
public:
        virtual void collision(PhysicsParticleObject &position, 
                ScorchedCollisionId collisionId) = 0;
        virtual void wallCollision(PhysicsParticleObject &position,
                ScorchedCollisionId collisionId) {}
};

class Target;
class ScorchedContext;
class PhysicsParticleObject
{
public:
        PhysicsParticleObject();
        virtual ~PhysicsParticleObject();

        void setPhysics(
                PhysicsParticleInfo info,
                ScorchedContext &context, 
                FixedVector &position, FixedVector &velocity,
                fixed sphereSize = 0,
                fixed sphereDensity = 0,
                fixed windFactor = 1,
                bool underGroundCollision = false,
                bool rotateOnCollision = false,
                bool wallCollision = true);

        void applyForce(FixedVector &force);
        void simulate(fixed frameTime);

        FixedVector &getPosition() { return position_; }
        FixedVector &getVelocity() { return velocity_; }
        FixedVector4 &getRotationQuat() { return rotation_; }

        void setHandler(PhysicsParticleObjectHandler *handler) { handler_ = handler; }
        void setPosition(FixedVector &position) { position_ = position; }

protected:
        PhysicsParticleInfo info_;
        ScorchedContext *context_;
        PhysicsParticleObjectHandler *handler_;
        bool underGroundCollision_;
        bool rotateOnCollision_;
        bool wallCollision_;
        unsigned int iterations_;
        FixedVector position_;
        FixedVector velocity_;
        FixedVector windFactor_;
        FixedVector4 rotation_;
        FixedVector4 avelocity_;

        enum CollisionAction
        {
                CollisionActionNone = 0,
                CollisionActionCollision,
                CollisionActionBounce
        };
        struct CollisionInfo
        {
                ScorchedCollisionId collisionId;
                fixed deflectFactor;
                FixedVector normal;
        };

        virtual void shotWallHit(CollisionInfo &collision);
        virtual void shotShieldHit(Target *target);
        virtual void bounceShieldHit(Target *target);

        void checkCollision();
        CollisionAction checkShotCollision(CollisionInfo &collision, Target *target);
        CollisionAction checkBounceCollision(CollisionInfo &collision, Target *target);
        CollisionAction checkFallingCollision(CollisionInfo &collision, Target *target);

        bool getLandscapeCollision(CollisionInfo &collision);
        bool getRoofCollision(CollisionInfo &collision);
        bool getWallCollision(CollisionInfo &collision);
        bool getShieldCollision(CollisionInfo &collision, Target *target);
        bool getTargetCollision(CollisionInfo &collision, Target *target);
        bool getTargetBounceCollision(CollisionInfo &collision, Target *target);
};

class PhysicsParticleActionObject : public PhysicsParticleObject
{
public:
        PhysicsParticleActionObject();
        virtual ~PhysicsParticleActionObject();

protected:
        virtual void shotWallHit(CollisionInfo &collision);
        virtual void shotShieldHit(Target *target);
        virtual void bounceShieldHit(Target *target);
};

#endif

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