Corona SDK - 使用触摸左右移动播放器(包含代码)

时间:2014-03-24 19:14:16

标签: lua touch corona

如果之前有人问过道歉,我试着搜索无济于事。无论如何,我有一些逻辑错误,当我试图移动它时,阻止我的玩家对象左右移动。任何提示都会受到赞赏,因为我是Lua的初学者。感谢您的时间。

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

2 个答案:

答案 0 :(得分:1)

尝试

print("in touch event")
if isSimulator then
    if event.phase == "began" then
        print("touch started")
        startX = event.x

    elseif event.phase == "moved" then
        local changeSinceLast = event.x - startX
        player.x = player.x + changeSinceLast 
        startX = event.x
        print("touch moved")

    end

<强>更新

如果没有打印任何内容,那么你必须查看导致touchPlayer:touch(event)被调用的内容。它是Listeners('add')。此外,该函数有touchPlayer,但调用此函数时是否存在touchPlayer?所以试试:

function Listeners(event)
    if event == 'add' then
        print('adding touch listener:', touchPlayer)
        player:addEventListener('touch', touchPlayer)

答案 1 :(得分:0)

因为您没有在设备上分配触摸侦听器。您已为模拟器分配了触摸侦听器,您无法在模拟器上测试触摸事件。 因此,也要为设备分配,并在开始条件下添加以下行。

display.getCurrentStage():setFocus(event.target)