ren'py tutorial demo_transform

[InfDeath]

I'm trying to figure out why the colliding balls section is only rotating the pilot ball, I'm just not used to python enough to figure it out yet. It looks like all the balls should have their own rotation set randomly but they never actually transform.
Anyone able to explain what is going on there and how to get them to all rotate?

[Atlantis]

Hello everyBody

No answer ?
I'am very interrest in too, because i have the same problem with this part of code.
Why only the pilot ball rotate ? (all the other balls rotate only one time..)

Thanks
All the best

Code: Select all

init python:
    
    class Ball(object):
        def __init__(self, filename, x, y, function=None):
            
            self.transform = Transform(child=filename, xanchor=0.5, yanchor=0.5, rotate=10, function=function)
            self.x = x
            self.y = y
            
            self.drotate = renpy.random.uniform(0, 180)


    # This is called by the first transform. It updates all of the
    # transforms. 
    def balls_update(pilot, st, at):

        global last_time

        RADIUS = 75 / 2 
        LEFT = RADIUS
        RIGHT = 800 - RADIUS
        TOP = RADIUS
        BOTTOM = 600 - RADIUS

        # The pilot is the first ball in our list, and he's the one
        # that gets last_time updated.
        if last_time is None:
            dt = 0
        else:
            dt = st - last_time

        last_time = st

              
        # Update the transforms.
        for i in balls:

            # This is the code that deals with Ren'Py to update the
            # various transforms. Note that we use absolute coordinates
            # to position ourselves with subpixel accuracy.
            i.transform.rotate +=  5
            i.transform.xpos = absolute(i.x)
            i.transform.ypos = absolute(i.y)

            i.transform.update()

        return 0


####  LANCES DE DES #####
label _des:
        
    python:
     
        last_time = None
        # Define a list of ball objects.
        balls = [ 
            Ball("dice-1.png", 100, 150,  function=balls_update),
            Ball("dice-2.png", 200, 150),
            Ball("dice-3.png", 300, 150),
            Ball("dice-4.png", 400, 150),
            Ball("dice-5.png", 500, 150),
            Ball("dice-6.png", 600, 150),
            
            ]

        # Add each ball's transform to the screen.
        for i, b in enumerate(balls):
            renpy.show("des%d" % i, what=b.transform)

     

[Atlantis]

Nobody ? :'-(

[sciencewarrior]

You are only passing the update function to the first Ball you create. You should pass it to the others:

Code: Select all

        # Define a list of ball objects.
        balls = [ 
            Ball("dice-1.png", 100, 150,  function=balls_update),
            Ball("dice-2.png", 200, 150,  function=balls_update),
            Ball("dice-3.png", 300, 150,  function=balls_update),
            Ball("dice-4.png", 400, 150,  function=balls_update),
            Ball("dice-5.png", 500, 150,  function=balls_update),
            Ball("dice-6.png", 600, 150,  function=balls_update),          
            ]

[Atlantis]

Thanks for your attention warrior.

I've already tested this, but it doesn't work either.
In this case, all the balls rotate only one time.

[backansi]

@Atlantis
If you just want to rotate dice images and not interested in Transform how about this instead of script of tutorial?

Code: Select all

init python:
    for index in range(1,7):
        renpy.image('dice-%d' % i,
                    'dice-%d.png' % i)

transform rotating:
    rotate 0 ypos 150
    linear 1.0 rotate 360
    repeat
    
label start:
    show dice-1 at rotating:
        xpos 100
    show dice-2 at rotating:
        xpos 200
    # .......

[Atlantis]

First of all, Thanks a lot backansi for your answer !!
And..

It works !!! (with a couple of synthax modifications

Thanks again and I need to learn more deeply the renpy's documentation for severals functions..

ps : And excuse my ill english