A Coding Advice

[BETLAB11]

I exscuse my self in advance for my bad english.

However , I
have a little problem: I m coding my first game and I don’t know how to
switch the position of an image in 2 precise coorditanate. I explain
better this is my code:

function gonext(event) if event.phase == "began" then transition.to(img, {time = 10 , x = math.random(13 , 239)}) end end img:addEventListener("touch" , gonext)

In this way the Img after a ‘’ touch ‘’ switch his position between the number 13 and 239 ( so 122 , 34 , 68 ,200 … etc) But my target is to make move the img or in the position x = 13 or x = 239 (not all the values between these 2 numbers)

I hope I ve been clear xD.

Thanks in advance

[AlanPlantPot]

Are you saying that you want the img to ONLY move to either x = 13 or x = 239?  

If so then math.random will not help you, as you will get all values in between (as you have already found out).  

Try this instead:

local validPositions = {13, 239} function gonext(event) if event.phase == "began" then transition.to(img, {time = 10 , x = validPositions[math.random(1, 2)]}) end end img:addEventListener("touch" , gonext)

There is a table at the top with the only valid positions contained in it. The transition now picks a random value from that table. The math.random() call will only give you either 1 or 2, by inserting the function call into the table index it means it will choose either index 1 or index 2 from the validPositions table.

[BETLAB11]

@AlanPlantPot

Are you saying that you want the img to ONLY move to either x = 13 or x = 239?  

If so then math.random will not help you, as you will get all values in between (as you have already found out).  

Try this instead:

local validPositions = {13, 239} function gonext(event) if event.phase == "began" then transition.to(img, {time = 10 , x = validPositions[math.random(1, 2)]}) end end img:addEventListener("touch" , gonext)

There is a table at the top with the only valid positions contained in it. The transition now picks a random value from that table. The math.random() call will only give you either 1 or 2, by inserting the function call into the table index it means it will choose either index 1 or index 2 from the validPositions table.

I tried to make as you said but nothing… the System doesn’t recognize the ValidPosition local and the img doesn’t switch… It remains in the same position

[AlanPlantPot]

Are you saying that you want the img to ONLY move to either x = 13 or x = 239?  

If so then math.random will not help you, as you will get all values in between (as you have already found out).  

Try this instead:

local validPositions = {13, 239} function gonext(event) if event.phase == "began" then transition.to(img, {time = 10 , x = validPositions[math.random(1, 2)]}) end end img:addEventListener("touch" , gonext)

There is a table at the top with the only valid positions contained in it. The transition now picks a random value from that table. The math.random() call will only give you either 1 or 2, by inserting the function call into the table index it means it will choose either index 1 or index 2 from the validPositions table.

[BETLAB11]

@AlanPlantPot

Are you saying that you want the img to ONLY move to either x = 13 or x = 239?  

If so then math.random will not help you, as you will get all values in between (as you have already found out).  

Try this instead:

local validPositions = {13, 239} function gonext(event) if event.phase == "began" then transition.to(img, {time = 10 , x = validPositions[math.random(1, 2)]}) end end img:addEventListener("touch" , gonext)

There is a table at the top with the only valid positions contained in it. The transition now picks a random value from that table. The math.random() call will only give you either 1 or 2, by inserting the function call into the table index it means it will choose either index 1 or index 2 from the validPositions table.

I tried to make as you said but nothing… the System doesn’t recognize the ValidPosition local and the img doesn’t switch… It remains in the same position