quick-cocos2d-x3.3 Study (12)---------Create a rounded object with a physical engine effect

Create a heart-to-heart picture with physical effects

Create a physical scene first

1Local Gamescene =class("Gamescene", function ()2--Body3--returnDisplay.newscene ("Gamescene")4--create a scene with a physical effect5     returnDisplay.newphysicsscene ("Gamescene")6End

Add physical heart to this physical world

1--Gets the physical world object bound in the scene2Self.world =Self:getphysicsworld ();3--set the acceleration of gravity in a scene4Self.world:setGravity (CC.P (0, -98.0 ) ) ;5--set debug state where physical effects can be seen6 Self.world:setDebugDrawMask (CC. Physicsworld.debugdraw_all);7 8 9--Create a heart and heart with physical effectsTenSelf.heart = Display.newsprite ("Image/pic/heart.png") One--set the location of the heart ASelf.heart:setPosition (display.cx, Display.top-self.heart:getContentSize (). Height) ---add hearts to the scene - self.heart:addTo (self) the  ---Set the density, bounce force, and friction of the object, ---Set it all to0to make no physical changes in the event of a collision. -Local material_default = cc. Physicsmaterial (0.0,0.0,0.0 ) +--1 -Local Heartbody =cc. Physicsbody:createcircle ( +Self.heart:getContentSize (). Width/2, Material_default A     ) at--adding a physical engine to an object - self.heart:setPhysicsBody (heartbody) ---shielding the body of the physical world from the effects of gravity ---Self.heart:getPhysicsBody (): Setgravityenable (false)

Here the cc.PhysicsBody::createCircle() method is called to create a circle body;

Createcircle (RADIUS, material, offset),

The Createcircle method has three parameters, namely:

• The parameter 1 is the Cc.size type, which represents the outer radius of the circle body.
• The parameter 2 is CC. The physicsmaterial type, which represents the properties of the physical material,
  • CC is the default. Physicsbody_material_default.
    • This parameter can also be customized, as follows:
      cc.PhysicsMaterial(density, restitution, friction)
    • Density: Indicates density
    • Restitution: Indicates a rebound force
    • Friction: Indicates friction
• The parameter 3 is the CC.P type, and it is an optional parameter that represents the offset of the body from the center point, which is CC.P (0,0) by default.

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quick-cocos2d-x3.3 Study (12)---------Create a rounded object with a physical engine effect