使用触摸移动玩家向左和向右的 Corona SDK（包含代码）

抱歉如果之前有人问过，我尝试过搜索但没有结果。我有某种逻辑错误，导致我在尝试移动玩家对象时无法向左右移动。如果您能给我一些提示，我会非常感谢，因为我是Lua的初学者。谢谢您的时间。

function spawnPlayer()
player = display.newImage('player.png')
player.x = display.contentWidth * 0.5
player.y = display.contentHeight - player.height
player.name = 'player'
physics.addBody(player)
Score()
end

function Score()
score = display.newText('Score: ', 1, 0, native.systemFontBold, 14)
score.x = _W / 9
score.y = 0
score.text = score.text .. tostring(intscore)
Listeners('add')
end

function Listeners(event)

if event == 'add' then
    --Runtime:addEventListener("accelerometer", accelPlayer)
    --player:addEventListener("touch", touchPlayer)
    player:addEventListener('touch', touchPlayer)
    player:addEventListener('accelerometer', accelPlayer)
elseif event == 'remove' then
    Runtime:removeEventListener("accelerometer", accelPlayer)
    player:removeEventListener("touch", touchPlayer)
end
end

function touchPlayer:touch(event)

if isSimulator then

    if event.phase == "began" then
        moveX = event.x - player.x
    elseif event.phase == "moved" then
        player.x = event.x - moveX
    end

    if((player.x - player.width * 0.5) < 0) then
        player.x = player.width * 0.5
    elseif((player.x + player.width * 0.5) > display.contentWidth)
    then
        player.x = display.contentWidth - player.width * 0.5
    end
end
end

function accelPlayer:accelerometer(event)

player.x = display.contentCenterX - (display.contentCenterX * (event.yGravity * 3))

if((player.x - player.width * 0.5) < 0) then
    player.x = player.width * 0.5
elseif((player.x + player.width * 0.5) > display.contentWidth)
then
    player.x = display.contentWidth - player.width * 0.5
end
end