Imagebutton action that rotates an image

[frankfrankstud]

Hi all,

What's the best way to create an action on an imagebutton within a screen that rotates an image showing on the screen?

I basically want to create a puzzle where you have to turn buttons into the correct places to unlock something. The mechanics work perfectly, but I want to add an image that spins on top of the buttons just as a visual cue.

Thanks.

[m_from_space]

Something like this is possible:

Code: Select all

screen rotscreen():
    default ang = 0
    textbutton "Rotate" action SetScreenVariable("ang", ang+1)
    add "eileen":
        rotate ang

[frankfrankstud]

Something like this is possible:

Code: Select all

screen rotscreen():
    default ang = 0
    textbutton "Rotate" action SetScreenVariable("ang", ang+1)
    add "eileen":
        rotate ang

Unfortunately it keeps doing the same rotation over and over again (and even though the action is only added to one imagebutton on the screen, they all cause it to happen) but thank you for somewhere to start!

[_ticlock_]

and even though the action is only added to one imagebutton on the screen, they all cause it to happen

You need to use a single variable for each image to ratate them individually. For example for better organizing you can use list or dict:

Code: Select all

default angles = [0,0]
screen rotscreen():
    vbox:
        imagebutton idle Text("Rotate") action SetDict(angles, 0,  angles[0]+90)
        add "eileen":
            at rot(angles[0])
        imagebutton idle Text("Rotate") action SetDict(angles, 1,  angles[1]+90)
        add "eileen":
            at rot(angles[1])

transform rot(angle):
    linear 0.5 rotate angle

Unfortunately it keeps doing the same rotation over and over again

You probably causing the screen to replace itself. As a result, your screen variables are resetting to default values. You can use a global variable, instead of a screen variable.

[frankfrankstud]

and even though the action is only added to one imagebutton on the screen, they all cause it to happen

You need to use a single variable for each image to ratate them individually. For example for better organizing you can use list or dict:

Code: Select all

default angles = [0,0]
screen rotscreen():
    vbox:
        imagebutton idle Text("Rotate") action SetDict(angles, 0,  angles[0]+90)
        add "eileen":
            at rot(angles[0])
        imagebutton idle Text("Rotate") action SetDict(angles, 1,  angles[1]+90)
        add "eileen":
            at rot(angles[1])

transform rot(angle):
    linear 0.5 rotate angle

Unfortunately it keeps doing the same rotation over and over again

You probably causing the screen to replace itself. As a result, your screen variables are resetting to default values. You can use a global variable, instead of a screen variable.

Thank you. Yes, I created one variable for each image and used a global variable already. I think the main issue is that the screen jumps somewhere else, which then calls the screen again if a code is inputted wrong - which means that it just keeps repeating the same rotate. I'm still working out how to get through that, but thank you.

[m_from_space]

@_ticclock_'s example works fine here, I can do other stuff in the meantime and the objects don't just randomly rotate. They shouldn't either because I don't click their buttons. What are you doing inside your code that leads to the objects to rotate (to their defaults?)

[_ticlock_]

m_from_space,

I can do other stuff in the meantime and the objects don't just randomly rotate. They shouldn't either because I don't click their buttons.

I put the variable angles to globals to avoid rotation due to screen resetting. That is probably why "the objects don't just randomly rotate".

What are you doing inside your code that leads to the objects to rotate (to their defaults?)

I am not sure what you mean. The objects rotate from the previous state to the new state by transform rot.

The new state is defined by variables in the list angles. The previous state is defined either by 0 degrees (if the screen was hidden and shown again) or by the previous angle of the displayable(object) (if the screen is still shown).

Let me know if you meant something else.

[m_from_space]

Let me know if you meant something else.

Sorry, I forgot the quotes in my post and meant to reply to OP. I just meant that your example works fine for me while frankfrankstud states that the objects rotate sometimes. Also my "@" wasn't properly used. So again, your example is great. ^^