Iii. weapon shooting and automatic shooting

This chapter implements the weapon design: each time the hand gun, the machine gun can be fired continuously. The weapon spins in either direction to launch bullets.

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First add the Weapon class:

Weapon base class arm:p ublic cocos2d::sprite{public:    //init bullet    virtual bool Initbullet () = 0;    Launch    virtual void fire () = 0;    Stop launch for automatic machine gun    virtual void stopfire () = 0;   Get the bullet ignition position    VEC2 getbeginfirepos () const;   Get the bullet ignition away from the weapon position      VEC2 Getendfirepos () const;   Get weapon rotation point    Vec2 getrotationpos ();    Set ignition position    void Setbeginfirepos (vec2& _firepos);    Set the bullet launch position    void Setendfirepos (vec2& _gunpoint);    ssize_t Getbulletcount () const;protected:    //_beginfire and _endfire are used to calculate the plane vector    sprite*   _beginfire of bullets;    sprite*   _endfire;    sprite*   _rotation;    Maximum number of bullets    ssize_t   _bulletmaxcount;    Bullets    std::vector<bullet*>    _bullet;};

　　

Handgun  implements the virtual function of the base class handgun:p ublic arm{public:    virtual BOOL init () override;    virtual bool Initbullet ();    virtual void Fire ();    virtual void Stopfire ();    Create_func (handgun);};/ Machine gun  implements the virtual function of the base class, class machinegun:p ublic arm{public:    virtual BOOL init () override;    virtual bool Initbullet ();    virtual void Fire ();    virtual void Stopfire ();    One more auto-emitting function  here called by the timer    void    autofire (float);    Create_func (machinegun);p rivate:};

　　

Cpp#include "arm.h" #include "bullet.h" Vec2 arm::getbeginfirepos () const{return _beginfire->getposition ();} VEC2 Arm::getendfirepos () const{return _endfire->getposition (); VEC2 Arm::getrotationpos () {//convert world coordinates when mouse clicks are also converted to world coordinates return Converttoworldspace (_rotation->getposition ());} void Arm::setbeginfirepos (vec2& _firepos) {_beginfire->setposition (_firepos);} void Arm::setendfirepos (vec2& _endpos) {_endfire->setposition (_endpos);} ssize_t Arm::getbulletcount () const{return _bullet.size ();    BOOL Handgun::init () {_beginfire = Sprite::create ();    _endfire = Sprite::create ();    _rotation = Sprite::create ();    AddChild (_beginfire);    AddChild (_endfire);    AddChild (_rotation);    _bulletmaxcount = 10; return true;}    BOOL Handgun::initbullet () {Auto count = _bullet.size ();        for (; count! = _bulletmaxcount; count++) {Auto Handbullet = Bullet::create ();        Handbullet->initwithfile ("Arm1.png"); Handbullet->setspeed (5);        Handbullet->setvisible (FALSE);        _bullet.push_back (Handbullet);    AddChild (Handbullet);    }//Set Rotation center _rotation->setposition (getPosition () + getcontentsize ()/2); Return!! _bullet.size ();}     void Handgun::fire () {if (_bullet.size () < 1) {initbullet ();    } Auto Handbullet = _bullet.back ();    _bullet.erase (_bullet.end ()-1);    Calculation direction Auto Direction = Converttoworldspace (Getendfirepos ())-Converttoworldspace (Getbeginfirepos ());    Handbullet->setdirection (direction);    Auto pos = Converttoworldspace (Getendfirepos ());    pos + = Handbullet->getcontentsize ()/2;    Handbullet->setposition (POS);    Handbullet->setname ("Bullet");    Auto Parent = GetParent ();    Handbullet->retain ();    RemoveChild (Handbullet,false);    Parent->addchild (Handbullet, true);    Handbullet->release (); Handbullet->setvisible (TRUE);}    void Handgun::stopfire () {}bool machinegun::init () {_beginfire = Sprite::create (); _endfire = SpRite::create ();    _rotation = Sprite::create ();    AddChild (_beginfire);    AddChild (_endfire);    AddChild (_rotation);    _bulletmaxcount = 100; return true;}    BOOL Machinegun::initbullet () {Auto count = _bullet.size ();        for (; count! = _bulletmaxcount; count++) {Auto Handbullet = Bullet::create ();        Handbullet->initwithfile ("Arm1.png");        Handbullet->setspeed (10);        Handbullet->setvisible (FALSE);        _bullet.push_back (Handbullet);    AddChild (Handbullet);    } _rotation->setposition (GetPosition () + getcontentsize ()/2); Return!! _bullet.size ();} void Machinegun::fire () {//Set timer 0.1s to call once Schedule (Schedule_selector (Machinegun::autofire), 0.1f);} void Machinegun::stopfire () {//Stop timer this->unschedule (Schedule_selector (Machinegun::autofire));}    void Machinegun::autofire (float) {if (_bullet.size () < 1) {initbullet ();    } Auto Handbullet = _bullet.back ();    _bullet.erase (_bullet.end ()-1); Auto Direction = Converttoworldspace (Getendfirepos ())-Converttoworldspace (Getbeginfirepos ());    Handbullet->setdirection (direction);    Auto pos = Converttoworldspace (Getendfirepos ());    pos + = Handbullet->getcontentsize ()/2;    Handbullet->setposition (POS);    Handbullet->setname ("Bullet");    Auto Parent = GetParent ();    Handbullet->retain ();    RemoveChild (Handbullet, false);    Parent->addchild (Handbullet, true);    Handbullet->release (); Handbullet->setvisible (TRUE);}

　　

Bullet class Bullet:public sprite{public:    int getspeed () const;    VEC2 getdirection () const;    void setspeed (int _speed);    void Setdirection (vec2& _direction);    Bullet move    virtual void move ();    Create_func (bullet);p rivate:    int _speed;    VEC2   _direction;};

　　

CPP  Automatic Implementation method int Bullet::getspeed () const{    return _speed;} VEC2 bullet::getdirection () const{    return _direction;} void bullet::setspeed (int _speed) {    this->_speed = _speed;} void Bullet::setdirection (vec2& _direction) {    this->_direction = _direction;} void Bullet::move () {    float degree = 0;    int DirX = 1;   X-axis direction    int diry = 1;   Y-axis Direction    _direction.normalize ();    if (_direction.x < 0) {        DirX =-1;    }    if (_DIRECTION.Y < 0) {        DirY =-1;    }    Calculate radians [0 PI/2]    degree = atan (fabs (_DIRECTION.Y/_direction.x));    VEC2 location = GetPosition ();    location.x + = cos (degree) *_speed*dirx;    Location.y + = sin (degree) *_speed*diry;    SetPosition (location);}

　　

Scenefirescene::init () {.    .    .    Auto handgun = Handgun::create ();    Handgun->initwithfile ("Fire/handgun.png");    Handgun->setposition (Origin + VEC2 (visiblesize)/2);    Handgun->setbeginfirepos (VEC2 (125, 170));    Handgun->setendfirepos (VEC2 (225, 170));    Handgun->setname ("handgun");    This->addchild (handgun, 1);    Handgun->initbullet ();    Auto machinegun = Machinegun::create ();    Machinegun->setbeginfirepos (VEC2 (110, 146));    Machinegun->setendfirepos (VEC2 (255, 146));    Machinegun->initwithfile ("Fire/machinegun.png");    Machinegun->setname ("machinegun");    Machinegun->setposition (Origin + VEC2 (visiblesize)-VEC2 (+)-VEC2 (Label->getcontentsize ()/2));    This->addchild (machinegun, 1);    Machinegun->initbullet ();    Auto listener = eventlistenertouchonebyone::create ();    Listener->setswallowtouches (TRUE); Listener->ontouchbegan = [] (touch* Touch, event* Event) {Auto Tarter = Event->getcurRenttarget ();        Auto s = tarter->getcontentsize ();        Auto Locationnode = Tarter->converttonodespace (Touch->getlocation ());        Rect rect = rect{0, 0, s.width, s.height};            if (Rect.containspoint (Locationnode)) {Auto Gunarm = static_cast<arm*> (tarter);            Gunarm->fire ();        return true;    } return false;    };        Listener->ontouchmoved = [This] (touch* Touch, event* Event) {Auto Pnode = Event->getcurrenttarget ();        Auto gun = static_cast<arm*> (Pnode);        Auto Rotationpos = Gun->getrotationpos (); VEC2 v = (converttoworldspace (touch->getlocation ())-Rotationpos)-(Converttoworldspace (touch->        Getpreviouslocation ())-Rotationpos);        V.normalize ();            if (v.x >= -0.00001 && v.x <= 0.00001 | | v.y >= -0.00001 && v.y <= 0.00001) {        Return        } Auto degree = Cc_radians_to_degrees (atan2 (v.x, v.y)); pnode->setrotation (degree);    };        listener->ontouchended = [] (touch* Touch, event* Event) {Auto Pnode = Event->getcurrenttarget (); if (strcmp (Pnode->getname (). C_STR (), "machinegun") = = 0) {static_cast<machinegun*> (Pnode)->stopfire        ();    }    };    _eventdispatcher->addeventlistenerwithscenegraphpriority (listener, handgun);    _eventdispatcher->addeventlistenerwithscenegraphpriority (Listener->clone (), machinegun); return true;}

Take a shot of a machine gun shoot pictures don't care about the appearance of the picture ...

Iii. weapon shooting and automatic shooting