display.setStatusBar(display.HiddenStatusBar) system.activate("multitouch") local topY = display.screenOriginY --Numerical value for the top of the screen local rightX = display.contentWidth - display.screenOriginX --Numerical value for the right of the screen local bottomY = display.contentHeight - display.screenOriginY --Numerical value for the bottom of the screen local leftX = display.screenOriginX --Numerical value for the left of the screen local screenW = rightX - leftX --Numerical value for the width of the screen local screenH = bottomY - topY --Numerical value for the height of the screen local direction = 1 local speed = .2 leftWall = display.newRect(leftX + screenW/40,display.contentCenterY,screenW/20,display.contentHeight) rightWall = display.newRect(rightX - screenW/40, display.contentCenterY,screenW/20,display.contentHeight) middleLine = display.newRect(screenW/2,screenH/2,display.contentWidth,3) player1 = display.newRect(screenW/2 + leftX, topY + screenH/10 , screenW/5 , screenH/25) ball = display.newCircle(leftX + screenW/2, topY + screenH/2, screenW/30) function oneTouch(event) player1 = event.target local phase = event.phase if phase == "began" then display.getCurrentStage():setFocus(event.target,event.id) player1.markX = player1.x player1.markY = player1.y elseif ("moved" == phase and event.y \< display.contentHeight/2) then player1.x = player1.markX - (event.x - event.xStart) player1.y = player1.markY - (event.y - event.yStart) if player1.y \> display.contentHeight/2 then player1.y = display.contentHeight/2 - player1.height/2 end elseif (phase == "ended" or phase == "cancelled") then display.getCurrentStage():setFocus (player1,nil) end return true end player1:addEventListener("touch",oneTouch) function moveBall() if direction == 1 then ball.x = ball.x + speed ball.y = ball.y - speed elseif direction == 2 then ball.x = ball.x - speed ball.y = ball.y - speed elseif direction == 3 then ball.x = ball.x - speed ball.y = ball.y + speed elseif direction == 4 then ball.x = ball.x + speed ball.y = ball.y + speed end end Runtime:addEventListener( "enterFrame", moveBall ) local function checkCollision() if ball.x - 15 \< leftWall.x + 5 then if direction == 3 then direction = 4 elseif direction == 2 then direction = 1 end elseif ball.x + 15 \> rightWall.x - 5 then if direction == 1 then direction = 2 elseif direction == 4 then direction = 3 end end if (inside(ball,player1) ) then speed = speed + .1 if direction == 1 then direction = 4 elseif direction == 2 then direction = 3 end end end Runtime:addEventListener( "enterFrame", checkCollision ) function inside(obj1, obj2) return obj1.contentBounds.xMin \< obj2.contentBounds.xMax and obj1.contentBounds.xMax \> obj2.contentBounds.xMin and obj1.contentBounds.yMin \< obj2.contentBounds.yMax and obj1.contentBounds.yMax \> obj2.contentBounds.yMin end
When i drag my paddle towards the ball fast it just overlaps the ball does not make collision but it works pretty OK when I drag paddle slowly… I used zoomEven scale