Looping an image

[2chevsky]

Hello.
I want to make animated background in main menu, and i done it, but there's some glitch, when image looping from start.
i dunno how to discribe that, heh.
https://drive.google.com/file/d/0B4YvWx ... sp=sharing here's a video of glitch.
transformation:

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init:
    transform _moveleft(delay=0.1):
        xalign 1.0
        linear delay xalign 0.0
        repeat

main menu screen:

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screen main_menu: 
    
    add "images/GUI/mainmenu/bg_ground.png" at _moveleft(15)
    add "images/GUI/mainmenu/bg_hover.png"
    imagemap:
        
        hover "images/gui/hover_menu1.png"        
        ground "images/gui/ground_menu.png"
        hotspot (1175, 484, 376, 90) action Start()
        hotspot (1223, 576, 342, 62) action ShowMenu("gallery")
        hotspot (1232, 640, 310, 60) action ShowMenu("preferences_table") 
        hotspot (1298, 698, 178, 75) action ShowMenu("gallery")

        hotspot (1294, 700, 190, 79) action Quit(confirm=True)

[gas]

It's not a transform problem, it's an image issue, that's not proper drawn for that kind of cycle.

The start of the image must be totally equal to the possible final frame... AND VICEVERSA.

i've done a diagonal movement of a squared background, with steps of 256 pixels

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transform bganime:
    xpos 0.0
    xanchor 0.0
    ypos 0.0
    yanchor 0.0
    linear 8.0 xpos -256  ypos -256 
    repeat

...and work perfectly.

if you're sure your image is well done, try something like, using xpos instead of xalign.

[2chevsky]

Some guy from VK has give me an advice.
Transform:

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init:
    transform _moveleft(time=9.0):
        xanchor 1.0 xpos 1.0
        linear time xanchor .5 xpos 1.0
        repeat

and then:

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screen main_menu: 
    window:
        xpadding 0
        ypadding 0
        add At(HBox("images/GUI/mainmenu/bg_ground1.png", "images/GUI/mainmenu/bg_ground2.png"), _moveleft(4))
        add "images/GUI/mainmenu/bg_hover.png"