I’m building a couple of different games trying to learn Corona. In one game I want to swap out the background image based on what level you’re one. The other I want to tap on an image and change its bitmap.
So I can do a
gameboard = display.newGroup()
background = display.newImage("background1.png")
gameboard:insert(background) – code to add other things to the group like labels, scores, etc…
So when I go to the next level, how do I change out that background image?
In the second case, I want to create the graphic button of a random graphic. I think I’m getting a weird assert error because I’m in the middle of processing a touch event. I remove the graphic by calling :removeSelf() then I do a new object = display.newImage(randomimage) followed by adding a touch handler to it. So what I want to do is create the graphic once and just change the image when I want to.
I would paste in some code for it, but I’ve rearranged the code while trying to solve this problem.
Its basically:
local function removeObject(tapped)
if tapped then
-- do the score code
end
object:removeSelf();
object = nil -- tried this to try and completely remove object.
object = display.newObject(randomImage)
-- more init code
object::addEventListener("touch", listener )
end
local function listener(event)
local phase = event.phase
if "began" == phase then
removeObject(true)
end
return true
end
This would in theory do what I want, but it blows apart with an assert error, which I expect because I’m in the middle of the event handler.
I’m going to fix this by moving the create code to my gameLoop/state machine code on an enterFrame event. So I end up doing the destroy in the touch handler, and then create in the enterFrame event.
Still there has to be an easier way to just swap the graphics.
Thoughts? [import]uid: 19626 topic_id: 7452 reply_id: 307452[/import]
- but it would be good to have the option to use more advanced methods