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我已经坚持了一段时间了，真的需要帮助。基本上我想要做的是让这些对象在屏幕上生成，然后让玩家随意拖动它们。

目前随机对象流到屏幕上，但是当我尝试单击“star1”时出现错误：

尝试索引本地“star1”（零值） 我应该如何正确执行此操作？

这是我的代码：

display.setStatusBar(display.HiddenStatusBar)

local physics = require('physics')
physics.start()
--physics.setGravity(0, 0)


_W = display.contentWidth; --Returns Screen Width
_H = display.contentHeight; --Returns Screen Height

local bg = display.newImage('bg1.png')

local starTable = {} 


ship = display.newImage("head.png")
    ship.name = "ship"
    ship.x = -80
    ship.y = 100
    physics.addBody(ship, { isSensor = true })
    ship.bodyType = 'dynamic'
    shipIntro = transition.to(ship,{time=4000, x=200})
    ship.width = 40
    ship.height = 40
    ship.gravityScale = 0

local star1 = display.newImage("acorn")
    star1.name = "star1"
    physics.addBody(star1, { isSensor = true })
    star1.bodyType = 'static'



function initStar()
    local star1 = {}
    star1.imgpath = "acorn.png"
    star1.movementSpeed = 10000
    table.insert(starTable, star1)

    local star2 = {}
    star2.imgpath = "enemyA.png"
    star2.movementSpeed = 12000
    table.insert(starTable, star2);         

    local star3 = {}
    star3.imgpath = "star3.png"
    star3.movementSpeed = 14000
    table.insert(starTable, star3)
end     

function getRandomStar()
    local temp = starTable[math.random(1, #starTable)] 
    local randomStar = display.newImage(temp.imgpath) 
    randomStar.myName = "star" 
    randomStar.movementSpeed = temp.movementSpeed
    randomStar.x = math.random(0,_W) 
    randomStar.y = _H + 50 -- Start the star off screen
    randomStar.rotation = math.random(0,360) 
    starMove = transition.to(randomStar, {
        time=randomStar.movementSpeed, 
        y=-45,
        onComplete = function(self) self.parent:remove(self); self = nil; end
        }) -- Move the star
end




function star1:touch( event )
    if event.phase == "began" then 

        self.markX = self.x   
        self.markY = self.y  

    elseif event.phase == "moved" then

        local x = (event.x - event.xStart) + self.markX
        local y = (event.y - event.yStart) + self.markY

        self.x, self.y = x, y    -- move object based on calculations above
    end

    return true
end

star1:addEventListener( "touch", star1 )

starTimer1 = timer.performWithDelay(1700,getRandomStar, 0)
starTimer2 = timer.performWithDelay(2300,getRandomStar, 0)
starTimer3 = timer.performWithDelay(2700,getRandomStar, 0)      

initStar()
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1 回答 1

1

而不是您的代码：

  local star1 = display.newImage("acorn")     -- I think line no: 27

尝试以下操作：

  local star1 = display.newImage("acorn.png") --[[ Add image name with 
                                                   suffix/extension  --]]

继续编码...... :)

于 2013-08-07T19:53:35.297 回答