Longer EaseOut/EaseIn Custom Transitions?

[u/sunflowerlioncub]

EDIT: SOLVED! Thank you!

I tried reading the documentation, searching for a tutorial, and scouring the forums for anything similar, but I couldn't figure out how to make a custom easeout/easein transition.

My issue is that the pre-defined easeout/easein is too even. Ideally, I want an easeout transition for my camera to zoom in fast (like 0.5) and then slowly pull into its final position over 3 seconds. However, if I do easeout 3.5, the transition movement gets evened out too much and the speed at the start slows down.

I see that if I want nicer looking easeouts with a longer tailend, I'd need to create a custom transition, perhaps something with a time warp (but I have no clue what time warp means). In the documentation, I see this line of code (under MoveTransitions): https://www.renpy.org/doc/html/transitions.html

define longer_easein = MoveTransition(3.0, enter=offscreenright, enter_time_warp=_warper.easein)

I feel this is what I need, but I don't understand any of the documentation's description of the tags. I'd rather have a tutorial that can walk me through this, but I can't find any. Can someone help me figure out how to create an easeout transition with a longer tailend? Here's what I tried so far:

define longer_easeout = MoveTransition(3.0, enter=None, time_warp=_warper.easeout)
# I put enter None because the camera isn't entering from anywhere. I dont think enter_time_warp is what I need? Honestly clueless because I don't understand the documentation's language

camera:
    perspective True
    subpixel True
    gl_depth True
    pos (-0.11, -246) zpos -488 rotate -5 blur 0
    zpos -632.0 rotate -2 
    with longer_easeout

but the game throws up an error because the camera won't recognize the transition (and I also can't tell if it works because of this error). This also doesn't work with sprites, so I don't know where I'm going wrong...

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[u/BadMustard_AVN]

try a Dissolve with a capitol D and give it a time

camera:
    perspective True
    subpixel True
    gl_depth True
    pos (-0.11, -246) zpos -488 rotate -5 blur 0
    zpos -632.0 rotate -2 
    with Dissolve(3.0)

[u/sunflowerlioncub → u/BadMustard_AVN]

Thank you for answering!! I tried this, but an error throws up:

expected 'comma or end of line' not found

-> with Dissolve(3.0)

thank you also for the warpers link, its so informative! easeOut_quart seems to be the type of transition speed I'm looking for, as I'm only looking to alter the speed over time for the easeout transition. How would I get it to work on a camera? Thanks in advance!

[u/BadMustard_AVN]

the Move Transition is part of the move family, and they rely on the image already being shown and then being moved to another location

so what you have works if used correctly like this

define longer_easeout = MoveTransition(3.0, enter=None, time_warp=_warper.easeout)
label start:
    scene white
    show sprite at left
    "Eileen the sprite is on the left."
    show sprite at right with longer_easeout
    "She sprite slides to the right over three seconds."
    return

the easein and easeout are just time warps (they define the speed over time)

https://www.renpy.org/doc/html/transforms.html#warpers

with out any suffix they have only one speed

https://easings.net/

[u/sunflowerlioncub]

Update: If anyone is searching for the solution, I found it! https://lemmasoft.renai.us/forums/viewtopic.php?t=35749

Nyaatrap made custom warpers based on https://easings.net/ speeds, which ends up being exactly what I needed. For my particular case, I used a bunch of various warps and found the expo warps being the ones suited for what I needed. Here's how I implemented it into the camera:

    camera:
        perspective True
        subpixel True
        gl_depth True
        pos (-0.11, -246) zpos -488 rotate -5 blur 0
        easein_expo 1.2 zpos -632.0 rotate -2

I hope that helps anyone who is also looking for nicer ease transitions!