试图调用方法'applyForce' _调用

最是人间留不住，朱颜辞镜花辞树。这篇文章主要讲述试图调用方法' applyForce' 相关的知识，希望能为你提供帮助。
我正在制作侧卷轴，当我开始游戏时，我可以触摸屏幕以保持我的企鹅在空中，但是当我失败并与冰块碰撞并在重新启动后按下播放。我得到错误尝试调用方法'applyForce'继承我的代码

local function activatePengs(self,event)self:applyForce(0, -45, self.x, self.y)print("run")endlocal function touchScreen(event)print("touch")if event.phase == "began" thenpeng.enterFrame = activatePengs Runtime:addEventListener("enterFrame", peng)endif event.phase == "ended" thenRuntime:removeEventListener("enterFrame", peng)endendlocal function onCollision(event)if event.phase == "began" thenprint "collide"composer.gotoScene( "restart",{ time=800, effect="crossFade" } )endend-- now comes four required functions for Composer:function scene:create( event )local sceneGroup = self.viewbg1 = display.newImageRect(sceneGroup, "bg.png", 800, 1000)bg2 = display.newImage(sceneGroup, "ice2.png",140,210)bg3 = display.newImage(sceneGroup, "ice2.png",540,210)bg4 = display.newImage(sceneGroup, "ice2.png",940,210)bg5 = display.newImage(sceneGroup, "ice2.png",1340,210)bg6 = display.newImage(sceneGroup, "ice2.png",1740,210)bg7 = display.newImage(sceneGroup, "ice1.png",140,420)bg8 = display.newImage(sceneGroup, "ice1.png",540,420)bg9 = display.newImage(sceneGroup, "ice1.png",940,420)bg10 = display.newImage(sceneGroup, "ice1.png",1340,420)bg11 = display.newImage(sceneGroup, "ice1.png",1740,420)peng = display.newImage(sceneGroup, "peng.png", 80, 201) physics.addBody(peng, "dynamic", {density=.18, bounce=0.1, friction=.5, radius=55}) ... end

答案【试图调用方法' applyForce' 】可能是因为企鹅在调用函数时不是物理对象而发生错误。我想在去下一个场景之前删除enterFrame监听器应该可以解决你的问题。
我为您的代码添加了一些改进（未经测试）：

local applyForceToPenguin = false local function enterFrame( self, event )if applyForceToPenguin thenself:applyForce( 0, -45, self.x, self.y )print("run")endendlocal function touchScreen(event)print("touch")if event.phase == "began" then applyForceToPenguin = true endif event.phase == "ended" then applyForceToPenguin = false endendlocal function onCollision(event)if event.phase == "began" thenprint "collide"applyForceToPenguin = falsecomposer.gotoScene( "restart",{ time=800, effect="crossFade" } )endend-- now comes four required functions for Composer:function scene:create( event )local sceneGroup = self.viewbg1= display.newImageRect( sceneGroup, "bg.png", 800, 1000 ) bg2= display.newImage( sceneGroup, "ice2.png", 140, 210 ) bg3= display.newImage( sceneGroup, "ice2.png", 540, 210 ) bg4= display.newImage( sceneGroup, "ice2.png", 940, 210 ) bg5= display.newImage( sceneGroup, "ice2.png", 1340, 210 ) bg6= display.newImage( sceneGroup, "ice2.png", 1740, 210 ) bg7= display.newImage( sceneGroup, "ice1.png", 140, 420 ) bg8= display.newImage( sceneGroup, "ice1.png", 540, 420 ) bg9= display.newImage( sceneGroup, "ice1.png", 940, 420 ) bg10 = display.newImage( sceneGroup, "ice1.png", 1340, 420 ) bg11 = display.newImage( sceneGroup, "ice1.png", 1740, 420 )peng = display.newImage( sceneGroup, "peng.png", 80, 201) physics.addBody( peng, "dynamic", { density=.18, bounce=0.1, friction=.5, radius=55 } ) Runtime:addEventListener( "enterFrame", enterFrame ) ... endfunction scene:destroy()Runtime:removeEventListener( "enterFrame", enterFrame )endfunction scene:hide( event ) local sceneGroup = self.view local phase = event.phaseif phase == "will" then -- Code here runs when the scene is still off screen (but is about to come on screen)elseif phase == "did" then -- Code here runs when the scene is entirely on screen applyForceToPenguin = false endendscene:addEventListener( "hide", scene ) scene:addEventListener( "destroy", scene )

祝你今天愉快：）