EASY: setVisible function?

thanhquan1512 · November 2012

I try to set my sprite:setVisible(false) but the object still receive hit when clicking on its location. How can we inactive that sprite?

Currently my work around is instead of invisible/inactive it, I set its position out of screen >"<

ar2rsawseen · November 2012

Well there are many options, that could work based on what you need to do with object.
You may (as you did) position obejct of the screen, or
set scale to 0 or
remove object from parent and than add it back when you need it

zaniar · November 2012

how about this?

if sprite:isVisible() then
	-- some action
end

thanhquan1512 · November 2012

@ar2rsawseen: thank, that's complicated but seem we have no way
@zaniar: you misunderstood my problem

For example after I hide an object, I want to inactive that object too (like in Corona SDK) but it's still there and still fire event onclick (just only invisible)

hgvyas123 · November 2012

@zaniar: you misunderstood my problem For example after I hide an object, I want to inactive that object too (like in Corona SDK) but it's still there and still fire event onclick (just only invisible)

i think he is trying to suggest something like this,

local function onMouseDown(self, event)
	if self:hitTestPoint(event.x, event.y) then
		if self:isVisible() then
	                 -- some action
                 end
	end
end

zaniar · November 2012

Exactly. Thanks @hgvyas123

Mells · November 2012

Which version would you say is the most efficient one?

local function onMouseDown(self, event)
    if self:hitTestPoint(event.x, event.y) then
	if self:isVisible() then
	           -- some action
        end
    end
end

or

local function onMouseDown(self, event)
    if self:hitTestPoint(event.x, event.y) then
            if not(self:isVisible()) then
	            return
            end
            -- some action
    end
end

hgvyas123 · November 2012

i think so first one as that will chk the visibility for only those objects who are touched

Mells · November 2012

@hgvyas123
I have edited my sample just as you were posting because it was taken from a project with other requirements so it's possible your comment refers to the previous version now.

hgvyas123 · November 2012

NP

now i dont think so there is any difference in perfomance or efficiency between this two func

might be logically

if self:isVisible() then
-- some action
end

is faster than

if not(self:isVisible()) then
return
end
-- some action

but that diff can be ignored totally especially for 2-3 objects [ how many objects we can except which are touched at the same time]

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