충돌시 Corona 런타임 오류

Question

코드에서 멈추다 내가 놀고 있습니다. 런타임에 scene_game.lua가 표시됩니다. 290 : 'removeEventListener'(nil 값) 메서드를 호출하려고했습니다. (290)는 코드의이 부분이 표시되면 재미있는 부분이 오류가 오히려

elseif (self=="enemy" and other=="player") then 

의 충돌, 그것은 단지 호출됩니다 때 호출되지 않습니다되는 코드

for i=1,#lanes do 
       lanes[i]:removeEventListener("touch", moveCar) 
      end 

의이 부분을 참조한다 아래가 실행됩니다.

elseif (self=="player" and other=="enemy") then 

코드의 전체 섹션은 참조 용으로 아래 제공됩니다. Pls 도움!

function scene:create(event) 

    -- Initialize the scene here. 
    -- Example: add display objects to "sceneGroup", add touch listeners, etc. 
    local sceneGroup = self.view 

    -- The following variables are known as forward declares. We'll create some for the player, enemy, lanes and establish default values. 
    local lanes = {} -- create a table called lanes 
    local playerCar -- a variable for the player car 
    local playerCar1 -- a variable for the player car 
    local sprite 
    local laneID = 1 -- a variable for the land id 
    local enemyCars = {} -- a table to hold the enemy cars 
    local enemyCounter = 1 -- start the enemy counter at 1 to keep track of the enemy cars 

    local sendEnemyFrequency = 2500 -- defines how often to send enemy cars 
    local tmrToSendCars -- a variable to hold a reference to the timer of sending cars  

    local playerScore = 0 -- start the player score at 0 
    local playerScoreText -- an object to hold the score text object 

    -- This function will increment the player score by 1. This function is called when the transition for the enemy car is complete and is off screen. 

    local sheetInfo = require("zo") 
     local myImageSheet = graphics.newImageSheet("zo.png", sheetInfo:getSheet()) 


local sequenceData = { 
    { 
    name="walk",         -- name of the animation 
    sheet=myImageSheet,       -- the image sheet 
    start=sheetInfo:getFrameIndex("1"), -- first frame 
    count=4,          -- number of frames 
    time=700,         -- speed 
    loopCount=0         -- repeat 
    } 
} 

    local sheetInfo2 = require("opo") 
     local myImageSheet2 = graphics.newImageSheet("opo.png", sheetInfo2:getSheet()) 


local sequenceData2 = { 
    { 
    name="walk2",         -- name of the animation 
    sheet=myImageSheet,       -- the image sheet 
    start=sheetInfo:getFrameIndex("1"), -- first frame 
    count=4,          -- number of frames 
    time=700,         -- speed 
    loopCount=0         -- repeat 
    } 
} 





    chk=0 
     function messenger2(text) 
     if chk==0 then 
g4A = display.newGroup() 
halt1= display.newRect(-30 , 150, 50+100*9, 44*2+30-65) 
halt1.alpha=.85 
halt1.anchorX=0 
halt1.anchorY=0 
halt1:setFillColor(.2, .2, .2 ,.95) 
halt1:setStrokeColor(.8, .8 ,.8) 
halt1.strokeWidth = .51 
audio.play(levelup) 
halt1text = display.newText(text, 235, 44*3+185-140,native.systemFont, 26) 
halt1text:setFillColor(.8, .8, .8) 

g4A:insert(halt1) 
    g4A:insert(halt1text) 

    transition.fadeOut(g4A, { time=2500, transition=easing.inCirc }) 
    sceneGroup:insert(g4A) 
end 
end 


    local function incrementScore() 
     playerScore = playerScore + 1 -- add playerScore by 1 
     playerScoreText.text = "Score: "..playerScore -- update the on screen text 



     if playerScore>bestscore then 
    bestscore=playerScore 

    messenger2("New high score reached") 
    chk=1 
    loadsave.saveTable(bestscore, "Bestscorenow.json", system.DocumentsDirectory) 
    end 




    end 

    -- moveCar will respond to the touch event on the lanes 
    local function moveCar(event) 

     if(event.phase == "ended") then 

      laneID = event.target.id -- grab the lane id which will be 1, 2, or 3 
      transition.to(playerCar, {x=lanes[laneID].x,time=50}) -- move the player car to the appropriate lane 
      transition.to(playerCar1, {x=lanes[laneID].x,time=50}) -- move the player car to the appropriate lane 
      transition.to(sprite, {x=lanes[laneID].x,time=50}) -- move the player car to the appropriate lane 

audio.play(movingck) 

      return true -- to indicate a successful touch event, return true 
     end 
    end 





    -- sendEnemyCar is where the magic happens. This function will send enemy cars from the top of the screen to the bottom of the screen. 
    local function sendEnemyCar() 
    if(enemyCounter%7 == 0) then 
    enemyCars[enemyCounter] = display.newImageRect(sceneGroup, "tr.png", 20, 20) 
    enemyCars[enemyCounter].x = lanes[math.random(1,#lanes)].x -- place the car on a random lane 
      if(math.random(1,2) == 1) then enemyCars[enemyCounter].x = lanes[laneID].x; end -- 50% of the time, place the enemy car on the player car lane. 
     enemyCars[enemyCounter].y = -125 -- place the enemy off screen at the top 
     enemyCars[enemyCounter]:scale(1.8,-1.65) -- rotate the cars so they are facing down 
     physics.addBody(enemyCars[enemyCounter]) -- add a physics body to enemy cars 
     enemyCars[enemyCounter].bodyType = "kinematic" -- make the bodies kinematic 
     enemyCars[enemyCounter].id = "trophy" -- id 

     transition.to(enemyCars[enemyCounter], {y=display.contentHeight+enemyCars[enemyCounter].height+20, time=math.random(2250,3000), onComplete=function(self) display.remove(self); incrementScore(); end}) -- a transition that moves the enemy car towards the bottom of the screen. On completion, the enemy car object is removed from the game. 

     enemyCounter = enemyCounter + 1 -- increase enemy counter by one for tracking 
     if(enemyCounter%2 == 0) then -- every other car, increase the speed of enemy frequency 
      sendEnemyFrequency = sendEnemyFrequency - 200 -- deduct the frequency by 200ms 
      if(sendEnemyFrequency < 850) then sendEnemyFrequency = 850; end -- cap the send enemy frequency to 800 
      timer.cancel(tmrToSendCars) -- cancel the timer of sending cars 
      tmrToSendCars = timer.performWithDelay(sendEnemyFrequency, sendEnemyCar, 0) -- recreate the time to send cars with update frequency 
     end 
    else 
     enemyCars[enemyCounter] = display.newSprite(sceneGroup, myImageSheet2, sequenceData2) 
enemyCars[enemyCounter]:setSequence("walk2") 
enemyCars[enemyCounter]:play() 

     enemyCars[enemyCounter].x = lanes[math.random(1,#lanes)].x -- place the car on a random lane 
      if(math.random(1,2) == 1) then enemyCars[enemyCounter].x = lanes[laneID].x; end -- 50% of the time, place the enemy car on the player car lane. 
     enemyCars[enemyCounter].y = -125 -- place the enemy off screen at the top 
     enemyCars[enemyCounter]:scale(1.8,-1.65) -- rotate the cars so they are facing down 
     local offsetRectParams = { halfWidth=20, halfHeight=20, x=0, y=60, angle=0 } 

     physics.addBody(enemyCars[enemyCounter], { box=offsetRectParams }) -- add a physics body to enemy cars 
     enemyCars[enemyCounter].bodyType = "kinematic" -- make the bodies kinematic 
     enemyCars[enemyCounter].id = "enemy" -- id 

     transition.to(enemyCars[enemyCounter], {y=display.contentHeight+enemyCars[enemyCounter].height+20, time=math.random(2250,3000), onComplete=function(self) display.remove(self); incrementScore(); end}) -- a transition that moves the enemy car towards the bottom of the screen. On completion, the enemy car object is removed from the game. 

     enemyCounter = enemyCounter + 1 -- increase enemy counter by one for tracking 
     if(enemyCounter%2 == 0) then -- every other car, increase the speed of enemy frequency 
      sendEnemyFrequency = sendEnemyFrequency - 200 -- deduct the frequency by 200ms 
      if(sendEnemyFrequency < 850) then sendEnemyFrequency = 850; end -- cap the send enemy frequency to 800 
      timer.cancel(tmrToSendCars) -- cancel the timer of sending cars 
      tmrToSendCars = timer.performWithDelay(sendEnemyFrequency, sendEnemyCar, 0) -- recreate the time to send cars with update frequency 
     end 

    end 
    end 

    -- Allow the player to return to the menu 
    local function onPlayAgainTouch() 

     composer.gotoScene("scene_menu", "fade") -- move player to menu 
    end 


    local function playersdead() 

     audio.play(deads) 
    print(deads) 
      -- stop the game 
      transition.pause() 
      timer.cancel(tmrToSendCars) 
      physics.pause() 
       playerCar1.isVisible = true 
     playerCar.alpha = 0 
     sprite.alpha = 0 



      -- remove event listeners from all lanes 
      for i=1,#lanes do 
       lanes[i]:removeEventListener("touch", moveCar) 
      end 
Runtime:removeEventListener("collision",onGlobalCollision) 
      local gameOverBackground = display.newRect(sceneGroup, 0, 0, display.actualContentWidth, display.actualContentHeight) -- display an opaque background graphic for some game over polish 
       gameOverBackground.x = display.contentCenterX 
       gameOverBackground.y = display.contentCenterY 
       gameOverBackground:setFillColor(0) 
       gameOverBackground.alpha = 0.5 

      -- Create a text object that will display game over text 
      local gameOverText = display.newText(sceneGroup, "Game Over!", 100, 200, native.systemFontBold, 36) 
      gameOverText.x = display.contentCenterX 
      gameOverText.y = 150 
      gameOverText:setFillColor(1, 1, 1) 

wpmaGlobalAdmob.showAdmobInterstitialAd() 
wpmaGlobalAdmob.loadAdmobInterstitialAd()   

      -- create a button that allows the player to return to the 
      local playAgain = widget.newButton { 
       width = 220, 
       height = 100, 
       defaultFile = "images/btn-blank.png", 
       overFile = "images/btn-blank.png",   
       label = "Menu", 
       font = system.defaultFontBold, 
       fontSize = 32, 
       labelColor = { default={ 0, 0, 0 }, over={ 0, 0, 0, 0.5 } }, 
       onEvent = onPlayAgainTouch 
      } 
      playAgain.x = display.contentCenterX 
      playAgain.y = gameOverText.y + 100 
      sceneGroup:insert(playAgain)  

    end 

    local function trophyz() 
     audio.play(uplevel) 

    end 


    -- This is the global collision scene. There are several ways to handle collisions and this is only one method. I felt this was the easiest for learning purposes. 
    local function onGlobalCollision(event) 
     if(event.phase == "began") then -- when the enemy car collides into the player car, this if/then statement will be true   
local self = event.object2.id 
local other = event.object1.id 

     print_r(self)  --the first object in the collision 
    print_r(other)  --the second object in the collision 
-- print_r(event.element1)  --the element (number) of the first object which was hit in the collision 
-- print_r(event.element2)    

if (self=="player" and other=="trophy") then 

event.object1:removeSelf() 
trophyz() 
elseif (self=="trophy" and other=="player") then 

    event.object2:removeSelf() 
trophyz() 
elseif (self=="player" and other=="enemy") then 
    playersdead() 
print("Someting screwy here") 
elseif (self=="enemy" and other=="player") then 
    playersdead() 


    --display.remove(self) 
else 
print("U SHOULD NOT BE HERE") 

     end 





     --END COLLISION 
    end 
     end 


    local background = display.newImageRect(sceneGroup, "images/background.png", 475, 713) -- create the background image object 
     background.x = display.contentCenterX -- place the graphic in the center of the x-axis 
     background.y = display.contentCenterY -- place the graphic in the center of the y-axis 

    for i=1,3 do -- loop 3 times to create 3 lanes for our game 
     lanes[i] = display.newImageRect(sceneGroup, "images/lane.png", 79, 713) 
      lanes[i].x = (display.contentCenterX - 79*2) + (i*80) 
      lanes[i].y = display.contentCenterY 
      lanes[i].id = i 
      lanes[i]:addEventListener("touch", moveCar) -- add an event listener to the lanes that will respond to touch events. 
    end 

    playerScoreText = display.newText(sceneGroup, "Score: "..playerScore, 0, 0, native.systemFont, 36) -- Create a text object that will display the player score 
     playerScoreText.x = display.contentCenterX 
     playerScoreText.y = 25 






    playerCar = display.newImageRect(sceneGroup, "images/playerCar.png", 60, 60) -- create the player car image object 
     playerCar.anchorY = 1 -- set the anchor point to 1 which is the bottom of the graphic 
     playerCar.x = lanes[1].x -- put the player car on the first lane 
     playerCar.y = display.contentHeight-70 -- place the car at the bottom of the screen 
     physics.addBody(playerCar) -- add a physics body to the car 
     playerCar.bodyType = "dynamic" -- make the car a dynamic body type 
      playerCar.id = "player" 

     playerCar1 = display.newImageRect(sceneGroup, "images/playerCar11.png", 50, 100) -- create the player car image object 
     playerCar1.anchorY = 1 -- set the anchor point to 1 which is the bottom of the graphic 
     playerCar1.x = lanes[1].x -- put the player car on the first lane 
     playerCar1.y = display.contentHeight -- place the car at the bottom of the screen 
    -- id 

     -- physics.addBody(playerCar1) -- add a physics body to the car 
     -- playerCar1.bodyType = "dynamic" -- make the car a dynamic body type 



sprite = display.newSprite(myImageSheet, sequenceData) 
sprite:scale(1.6, 1.6) 
sprite.anchorY = 1 
sprite:setSequence("walk") 
sprite:play() 

sprite.x = lanes[1].x -- put the player car on the first lane 
     sprite.y = display.contentHeight -- place the car at the bottom of the screen 




     playerCar1.isVisible = false 
     playerCar.isVisible = true 

     playerCar.alpha = 0 

    tmrToSendCars = timer.performWithDelay(sendEnemyFrequency, sendEnemyCar, 0) -- start a timer to send cards. A 0 means run forever 
    Runtime:addEventListener("collision", onGlobalCollision) -- create a global event listener to listen for any collision. 

end 

Answer 1

당신은 아마 onGlobalCollision()에서 local로 선언되고 싶지 않아, 그래서 self는 예약 된 단어로 시작합니다. 예를 들어, obj1 및 obj2을 입력하면됩니다.

lanes[i]:removeEventListener("touch", moveCar)을 실행하는 루프에서 은이 무엇입니까 (있는 경우) lanes[i]에 정의되어 있습니까?

for k,v in pairs(lanes[i]) do 
    print(k,v) 
end