Cocos2dx Game Development Series notes 15.1: Add a virtual joystick SneakyInput

 

(It seems that there is a problem with saving the csdn blog)

(When I have finished saving all the files, I owe my hand to click the return button of the browser, and then the automatic saving of csdn is not easy to use, and now this note is the second time T.T)
Today's Christmas
Bone is not romantic with Zhe
The cat is watching the video in bed and eating fruit snacks.
Sugar cane with bones beside it
Eat it after finishing this article.




SneakyInput:
An open source project address: https://github.com/Ntran013/SneakyInput
REFERENCE Note 8: Legend of war






= 1 =
Add the Sneaky code.




= 2 =
In a separate Layer, declare a button and a joystick:
Public:
HudLayer ();
Bool init ();


SneakyButton * mButtonA;
SneakyJoystick * mJoystick;


// Void inputUpdate (float dt );
};
Add this separate Layer in GameScene:
GameScene: GameScene ()
{
MHudLayer = new HudLayer ();
This-> addChild (mHudLayer, 1 );
MGameLayer = new GameLayer ();
This-> addChild (mGameLayer, 0 );
Init ();
This-> schedule (schedule_selector (GameScene: inputUpdate ));
}
This HudLayer control layer adds the game logic layer.
Void GameScene: inputUpdate (float dt)
{
CCPoint> // std: cout <velocity. x <std: endl;


If (velocity. x >=0.4f> velocity. y >=0.4f> mGameLayer-> mHero-> using withdirection (velocity );
}> MGameLayer-> mHero-> idle ();
}


If (attackInterval <= 0.0f ){
If (mHudLayer-> mButtonA-> getIsActive ()){
MGameLayer-> mHero-> attack ();
AttackInterval = 0.5f;
......
}
}
In this method, first obtain the speed of the joystick. If the absolute speed value exceeds 0.4, the corresponding action is used to move the protagonist.
Then, determine whether the button mButtonA is pressed. If yes, the attack will be performed.
A variable is used to control the attack interval: 0.5 seconds for attack detection.


= 4 =
The following describes how to initialize the joystick and attack buttons:
In the HudLayer:
Joystick initialization:
CCSpriteFrameCache *> CCSpriteFrameCache: sharedSpriteFrameCache ();
Cache-> addSpriteFramesWithFile (UI. plist, UI.png );


MJoystick = NULL;
MJoystick = new SneakyJoystick ();
MJoystick-> initWithRect (CCRectZero); // use the origin to initialize
MJoystick-> setAutoCenter (true); // auto center
MJoystick-> setHasDeadzone (true); // The setting is invalid.
MJoystick-> setDeadRadius (10); // set the radius of the invalid Region
SneakyJoystickSkinnedBase * jstickSkin = new SneakyJoystickSkinnedBase ();
JstickSkin-> autorelease ();
JstickSkin-> init ();
JstickSkin-> setBackgroundSprite (CCSprite: createWithSpriteFrameName(JoyStick-base.png ));
JstickSkin-> setThumbSprite (CCSprite: createWithSpriteFrameName(JoyStick-thumb.png ));
// JstickSkin-> getThumbSprite ()-> setScale (0.5f );
JstickSkin-> setPosition (ccp (50, 50 ));
JstickSkin-> setJoystick (mJoystick );
This-> addChild (jstickSkin );
Attack button Initialization
MButtonA = NULL;
MButtonA = new SneakyButton ();
MButtonA-> initWithRect (CCRectZero );
MButtonA-> setIsToggleable (false );
MButtonA-> setIsHoldable (true );
SneakyButtonSkinnedBase *> btnASkin-> autorelease ();
BtnASkin-> init ();
BtnASkin-> setPosition (ccp (430, 50 ));
BtnASkin-> setdefasprsprite (CCSprite: createWithSpriteFrameName(button-default.png ));
BtnASkin-> setPressSprite (CCSprite: createWithSpriteFrameName(button-pressed.png ));
BtnASkin-> setActivatedSprite (CCSprite: createWithSpriteFrameName(button-activated.png ));
// BtnASkin-> setDisabledSprite (CCSprite: createWithSpriteFrameName(button-disabled.png ));
BtnASkin-> setButton (mButtonA );
This-> addChild (btnASkin );
Well, it's so easy to use the joystick. Thanks to the original author.