[英]Corona SDK - Tap and Touch Event on a single object, object rotation
我正在嘗試做一個模擬行星繞太陽旋轉的應用程序。 我希望當應用程序啟動時,行星停止運轉。 當我第一次按下太陽時,行星開始旋轉,而當我第二次按下時,行星停止。 我還希望,如果我向上滑動,行星開始旋轉得更快,而當我向下滑動時,行星減速。
這是我所做的:
-- Sun
local sun = display.newImage ( "Sole.png")
sun.x = display.contentCenterX
sun.y = display.contentCenterY
-- First Planet
local group1 = display.newGroup()
p1 = display.newImage("P1(2).png")
group1:insert(p1)
group1.x = sole.x
group1.y = sole.y
p1.x = 270
p1.y = 0
-- Second Planet
local group2 = display.newGroup()
p2 = display.newImage("P2.png")
group2:insert(p2)
group2.x = sole.x
group2.y = sole.y
p2.x = -270
p2.y = 0
local function increaseSpeed(event)
group1.rotation = group1.rotation + 1
group2.rotation = group2.rotation + 1
end
local function decreaseSpeed(event)
group1.rotation = group1.rotation - 1
group2.rotation = group2.rotation - 1
end
-- * State 1: The planets begins to rotate
function state1( event )
print("state1")
sun.enterFrame = increaseSpeed
Runtime:addEventListener("enterFrame", sun)
sun:removeEventListener( "tap", state1 )
timer.performWithDelay( 1, addListener2 )
sun:addEventListener( "touch", swipe)
return true
end
-- * State 2: The planets stops
function state2( event )
print("state2")
sole:removeEventListener( "touch", swipe)
Runtime:addEventListener("enterFrame")
sun:removeEventListener( "tap", state2 )
timer.performWithDelay( 1, addListener1 )
return true
end
function addListener2()
sun:addEventListener( "tap", state2 )
end
function addListener1()
sun:addEventListener( "tap", state1)
end
-- Swipe function
local beginX
local beginY
local endX
local endY
local xDistance
local yDistance
function checkSwipeDirection()
xDistance = math.abs(endX - beginX)
yDistance = math.abs(endY - beginY)
if xDistance > yDistance then
if beginX > endX then
print("swipe left")
else
print("swipe right")
end
else
if beginY > endY then
print("swipe up")
timer.performWithDelay(10, increaseSpeed ,0)
else
print("swipe down")
timer.performWithDelay(10, decreaseSpeed ,0)
end
end
end
function swipe(event)
if event.phase == "began" then
beginX = event.x
beginY = event.y
end
if event.phase == "ended" then
endX = event.x
endY = event.y
checkSwipeDirection();
end
return true
end
我的問題是,如果我處於狀態1,我向上滑動,然后按太陽,我處於狀態2,但是即使我刪除了事件運行時enterFrame,行星仍繼續旋轉。
有人可以幫我嗎? 謝謝 :)
我可以在state2中看到您寫過:
Runtime:addEventListener("enterFrame")
您應該寫:
Runtime:removeEventListener("enterFrame", sun)
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