科羅納 - 在表中添加監聽到表/數組或對項目

Question

我嘗試使用下面的代碼的觸摸事件添加到圖像從表中隨機挑選：

easyGame2 = function() 
catTable = { 'catwhite', 'catblue', 'catred', 'catyellow', 'catgreen', 'catorange', 'catpink', 'catpurple'} 
randomCat = catTable[math.random(#catTable)] 

cat = display.newImageRect(randomCat..'.png', 50, 50) 

cat.x = math.random(20, display.contentWidth-20) 
cat.y = 0 

cat.myName = randomCat 
transition.to(cat, { rotation = cat.rotation-360, time=2000, y=500, 

onComplete=easyGame2}) 
end 

easyGame2() 

cat:addEventListener('touch', tapCat) 

tapCat = function(event) 
if event.phase == 'began' then 
    score = score + 2 
    display.remove(cat) 
    cat = nil 
    end 
end 

它的工作原理第一次接觸，然後就好像沒有聽衆了。如何使之成爲每一個選擇在[的Math.random（#catTable）影像工作

我自己也嘗試這樣的代碼：

local catTable = {} 
cat1 = {} 
cat1.imgpath = 'images/catwhite.png' 
table.insert(catTable, cat1) 
--cat1:addEventListener('touch', tapCat) --causes errors 

cat2 = {} 
cat2.imgpath = 'images/catblue.png' 
table.insert(catTable, cat2) 

cat3 = {} 
cat3.imgpath = 'images/catred.png' 
table.insert(catTable, cat3) 

cat4 = {} 
cat4.imgpath = 'images/catyellow.png' 
table.insert(catTable, cat4) 

cat5 = {} 
cat5.imgpath = 'images/catgreen.png' 
table.insert(catTable, cat5) 

cat6 = {} 
cat6.imgpath = 'images/catorange.png' 
table.insert(catTable, cat6) 

cat7 = {} 
cat7.imgpath = 'images/catpink.png' 
table.insert(catTable, cat7) 

cat8 = {} 
cat8.imgpath = 'images/catpurple.png' 
table.insert(catTable, cat8) 

easyGame2 = function() 
randomCat = catTable[math.random(#catTable)] 

cat = display.newImageRect(randomCat.imgpath, 50, 50) 

cat.x = math.random(20, display.contentWidth-20) 
cat.y = 0 

cat.myName = randomCat 
transition.to(cat, { rotation = cat.rotation-360, time=2000, y=450, onComplete=function(self)self.parent:remove(self);self=nil;end}) 

for i = 1, #catTable do 
     catTable[i]:addEventListener('touch', tapCat)--causes error 
    end 

end 

這給錯誤「181：嘗試

Answer 1

沒關係聽者上述的任何地方，我設法通過進行以下修改來解決這個問題：

randomCat = catTable[math.random(#catTable)] 
cat = display.newImageRect(randomCat..'.png', 50, 50) 
transition.to(cat, { rotation = cat.rotation-360, time=2000, y=500,onComplete=easyGame2}) 

到

randomCat = math.random(#catTable) 
cat = display.newImageRect(catTable[randomCat], 50, 50) 
cat.type = randomCat 
cat.trans = transition.to(cat, { rotation = cat.rotation-360, time=2000, y=550, onComplete=function(self)self.parent:remove(self);self=nil;end}) 
cat:addEventListener('touch', tapCat) 
return cat 
end 

tapCat = function(event) 
    catTouch = event.target 
    transition.cancel (event.target.trans) 

    if catTouch.type == catnormal then 
     score = score + 5 
    else 
     score = score + 10 
    end 
     display.remove(catTouch) 
     cat = nil 
    return true 
end 

感謝Vovahost答案。

Answer 2

調用方法「的addEventListener」（一個零值），把你的tapcat功能這樣

tapCat = function(event) 
if event.phase == 'began' then 
    score = score + 2 
    display.remove(cat) 
    cat = nil 
    end 
end 

cat:addEventListener('touch', tapCat)