hitTestObject not working!

What I have working:

Player clicks ball. Ball moves toward pins and fades off..

What I don't have working:

When ball hits pins output window is suppose to tell me "Ball hit pins"

Any help would be much appreciated

display.setStatusBar( display.HiddenStatusBar ) -- HIDE STATUS BAR
 
local screenW = display.contentWidth
local screenH = display.contentHeight
 
local loqsprite = require('loq_sprite')
 
local BG = display.newImageRect("background.png", 1024, 768)
BG.x = screenW/2;  BG.y = screenH/2 
 
local lane = display.newImageRect("lane.png", 897, 645)
lane.x = 510;  lane.y = 400
 
local pin = {}
 
local pinIcons = {}
local pinDisplay = 10
 
local i 
 
for i = 1, pinDisplay do
        pinIcons[i] = display.newImageRect("pin.png", 52, 176)
    pinIcons[i].x = 50 + (pinIcons[i].contentWidth * (i - 1))
    pinIcons[i].y = 100 -- start at 10,10
 
end
 
local t1 = {
        
        { x=720, y=264 },
        { x=760, y=290 },
        { x=795, y=300 },
        { x=830, y=320 },
        { x=720, y=300 },
        { x=750, y=320 },
        { x=790, y=335 },
        { x=720, y=320 },
        { x=750, y=340 },
        { x=700, y=350 }
}
 
 
 
for i = 1,#t1 do
        pin[i] = display.newImageRect("pin.png", 52, 176)
        pin[i].x = t1[i].x;  pin[i].y = t1[i].y
end
 
local bfactory = loqsprite.newFactory("bowlingBall")
local bowlingBall = bfactory:newSpriteGroup()
bowlingBall.x = 120 ; bowlingBall.y = 580
 
local hitArea = display.newImageRect("hitSpot.png", 52, 176)
hitArea.x = 700;  hitArea.y = 350
hitArea.alpha = 0
 
function removeBall()
          transition.to( bowlingBall, {time = 500, x = 950, y = 220, alpha = 0})
        
end
        
 
function hitTestObjects(obj1, obj2)
        local left = obj1.contentBounds.xMin <= obj2.contentBounds.xMin and obj1.contentBounds.xMax >= obj2.contentBounds.xMin
        local right = obj1.contentBounds.xMin >= obj2.contentBounds.xMin and obj1.contentBounds.xMin <= obj2.contentBounds.xMax
        local up = obj1.contentBounds.yMin <= obj2.contentBounds.yMin and obj1.contentBounds.yMax >= obj2.contentBounds.yMin
        local down = obj1.contentBounds.yMin >= obj2.contentBounds.yMin and obj1.contentBounds.yMin <= obj2.contentBounds.yMax
        return (left or right) and (up or down)
end
 
rollBall = function( event )
 
        local touch = event.phase
            
    if ( touch == "ended" ) then
    
    transition.to( bowlingBall, { time=1500, x= 750, y= 390, onComplete = removeBall } )
    bowlingBall:play("aniBowlingBall roll")
        
    local knockPins = hitTestObjects(t, hitArea)
    
        if (knockPins == true) then
        
        print("Ball hit pins")
         
        end   
    end
end
   
bowlingBall:addEventListener( "touch", rollBall )

One of the common mistakes, when the object becomes transparent, it stops to be hittestable, so you have to exclusively set it to isHitTestable and it will start to work.

add this around line 25 in your code above...

cheers,

?:)

I set both objects alpha = 1 and took out the onComplete = romoveBall

ran a test and it still doesn't work!

I also tried to do what you suggested and nothing happend

Do I set isHitTestable for the ball, hitArea and pin[i]?

I figured out the issue!! It was because I have the ball hitting it in 15 seconds.. So I had to set up a timer for the hitTestObject function so that it knows that the bowling ball is going to hit it in 15 sec!! BAM

views:1575 update：2011/10/19 8:59:29


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