Cocos2d-x Physics 3-dropped Avatar

Add a genie and let it fall from the height

BoolHelloWorld: init ()

{

? ? //////////////////////////////

? ? // 1. super init first

? ? If (! Layer: init ())

? ? {

? ? ? ? Return false;

? ? }

?? ?

# If CC_ENABLE_BOX2D_INTEGRATION

? ? Log ("Box2d enabled ");

# Endif

?? ?

? ? Size visibleSize = Director: getInstance ()-> getVisibleSize ();

? ? Vec2 origin = Director: getInstance ()-> getVisibleOrigin ();

?? ?

?? ?

? ?? // Create an Genie

? ? Auto sprite = Sprite: create ("Icon-58.png ");

? ? // Create a rigid body

? ? Auto spriteBody = PhysicsBody: createBox (sprite-> getContentSize (), PHYSICSBODY_MATERIAL_DEFAULT );

? ? // Assign a rigid body to the Genie, and then the genie has the physical characteristics

? ? Sprite-> setPhysicsBody (spriteBody );

? ? // Set the location of the Genie

? ? Sprite-> setPosition (visibleSize. width/2, visibleSize. height/3*2 );

? ? // Add the genie to the layer

? ? This-> addChild (sprite );

?? ?

? ? This-> addChild (sprite );

?

...

}

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The createBox method has three parameters:

1. Rectangular area size

2. Set Materials

3. Edge width

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The Sprite material also uses the default PHYSICS_MATERIAL_DEFAUTL instance.

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The running result shows that there is a sprite falling from the height to the speed, and it will rebound when it hits the bottom.

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Custom PhysicsMaterial class value

Auto spriteBody = PhysicsBody: createBox (sprite-> getContentSize (), PhysicsMaterial (0.0f, 1.2f, 0.2f ));

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Density = 0.0f

Recovery Force = 1.2f

Friction = 0.2f

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Run again, and the Genie is playing higher at the bottom.

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Cocos2d-x Physics 3-dropped Avatar