3.3final中EventListenerPhysicsContact如何注册

Cocos2d-x Lua
#1

不知道3.3中关于这个碰撞检测的接口回调如何注册，搜索了好多，都是以前的例子，和现在不一样
看了samples里面的例子，压根就没有注册碰撞回调，这个如何处理，求教啊~

#2

local contactListener = cc.EventListenerPhysicsContact:create();
contactListener:registerScriptHandler(onContactBegin, cc.Handler.EVENT_PHYSICS_CONTACT_BEGIN);
local eventDispatcher = layer:getEventDispatcher()
eventDispatcher:addEventListenerWithSceneGraphPriority(contactListener, layer);

#3

3Q，试用你的方法，确实可行
现在讲sample里面的physics的粒子修改了一下，用以下代码替换掉其中的MainScene的内容即可
:867::867::867:

local MainScene = class("MainScene", function()
    return display.newPhysicsScene("MainScene")
end)

local GRAVITY         = -200
local COIN_MASS       = 100
local COIN_RADIUS     = 46
local COIN_FRICTION   = 0.8
local COIN_ELASTICITY = 0.8
local WALL_THICKNESS  = 64
local WALL_FRICTION   = 1.0
local WALL_ELASTICITY = 0.5

function MainScene:ctor()
    -----------------------------------------------------------------
    ----------------------注册碰撞监听-------------------------------
    -----------------------------------------------------------------
    local contactListener  = cc.EventListenerPhysicsContact:create()
    contactListener:registerScriptHandler(function(contact)
        print("contactBegin", "-----------", type(contact))
        return true
    end, cc.Handler.EVENT_PHYSICS_CONTACT_BEGIN)

    contactListener:registerScriptHandler(function(contact, solve)
        print("contactPresolve", "-----------", type(contact), type(solve))
        return true
    end, cc.Handler.EVENT_PHYSICS_CONTACT_PRESOLVE)

    contactListener:registerScriptHandler(function(contact, solve)
        print("contactPostsolve", "-----------", type(contact), type(solve))
    end, cc.Handler.EVENT_PHYSICS_CONTACT_POSTSOLVE)

    contactListener:registerScriptHandler(function(contact)
        print("contactSeperate", "-----------", type(contact))
    end, cc.Handler.EVENT_PHYSICS_CONTACT_SEPERATE)

    self:getEventDispatcher():addEventListenerWithFixedPriority(contactListener, 1)
    -----------------------------------------------------------------

    -- create touch layer
    self.layer = display.newLayer()
    self.layer:setTouchEnabled(true)
    self.layer:addNodeEventListener(cc.NODE_TOUCH_EVENT, function(event)
        return self:onTouch(event.name, event.x, event.y)
    end)
    self:addChild(self.layer)

    -- create label
    cc.ui.UILabel.new({text = "TAP SCREEN", size = 32, color = display.COLOR_WHITE})
        :align(display.CENTER, display.cx, display.cy)
        :addTo(self)

    local leftWallSprite = display.newSprite("#Wall.png")
    leftWallSprite:setScaleY(display.height / WALL_THICKNESS)
    leftWallSprite:setPosition(display.left + WALL_THICKNESS / 2, display.cy + WALL_THICKNESS)
    self:addChild(leftWallSprite)

    local rightWallSprite = display.newSprite("#Wall.png")
    rightWallSprite:setScaleY(display.height / WALL_THICKNESS)
    rightWallSprite:setPosition(display.right - WALL_THICKNESS / 2, display.cy + WALL_THICKNESS)
    self:addChild(rightWallSprite)

    local bottomWallSprite = display.newSprite("#Wall.png")
    bottomWallSprite:setScaleX(display.width / WALL_THICKNESS)
    bottomWallSprite:setPosition(display.cx, display.bottom + WALL_THICKNESS / 2)
    self:addChild(bottomWallSprite)

    local wallBox = display.newNode()
    wallBox:setAnchorPoint(cc.p(0.5, 0.5))
    wallBox:setPhysicsBody(cc.PhysicsBody:createEdgeBox(cc.size(display.width - WALL_THICKNESS*2, display.height - WALL_THICKNESS)))
    wallBox:setPosition(display.cx, display.height/2 + WALL_THICKNESS/2)
    self:addChild(wallBox)
end

function MainScene:createCoin(x, y)
    -- add sprite to scene
    local coinSprite = display.newSprite("#Coin.png")
    self:addChild(coinSprite)
    local coinBody = cc.PhysicsBody:createCircle(COIN_RADIUS, cc.PhysicsMaterial(COIN_RADIUS, COIN_FRICTION, COIN_ELASTICITY))

    -----------------------------------------------------------------
    -----设置分类掩码和碰撞掩码，这里设置的是硬币和硬币碰撞----------
    -----------------------------------------------------------------
    coinBody:setCategoryBitmask(1)
    coinBody:setContactTestBitmask(1)
    -----------------------------------------------------------------
    
    coinBody:setMass(COIN_MASS)
    coinSprite:setPhysicsBody(coinBody)
    coinSprite:setPosition(x, y)
end

function MainScene:onTouch(event, x, y)
    if event == "began" then
        self:createCoin(x, y)
    end
end

return MainScene



```