Animation with dots, lines, bezier curves

[rururubell]

Hello! I want to create game with animated BG's. That's example what I want do do - https://www.youtube.com/watch?v=GXTFe4X-u8s

I read about ATL a little. And now I can make moving clouds, and I can change transparency level of layers (and make sun glare effects on screen).

But how can I made mowing wires, shaked by wind? And flying planes? How can I draw lines, bezier curves, dots and animate them? Is that possible? Can I get an example of something, that looks like I want?

[rames44]

It’s possible that the best approach might be a “Creator Defined Displayable”. https://www.renpy.org/doc/html/udd.html

This requires some Python knowledge, but is the most powerful of the Displayable options.

[Imperf3kt]

Note that ATL in large amounts like you plan to use, is resource heavy and may begin to slow your game down unless you have a really beefy computer.

You may be better off using a movie background.

[rururubell]

names44, Thanks for the link! But, maybe there exists more suitable examples? About lines, and how to change lines coordinates and animate them?

Imperf3kt, first, I try to use mp4 and webm backgrounds. But it not works well (a lot of artifacts). And video backgrounds use a lot of cpu (80 - 90%) when vlc use only 5-10% with same video. One of my animated background with ATL, use only 10 - 20 % of cpy. And it has a ~20 FullHD layers.

My computer has an old Core2Duo CPU and 3Gb RAM.

[isobellesophia]

You dont need to make your movie that complex, or maybe you could low the quality of the movie, just make it more easy and simple.

[Imperf3kt]

MP4 (also known as MPEG-4 part 10) is not supported.
https://www.renpy.org/doc/html/movie.html

[rames44]

names44, Thanks for the link! But, maybe there exists more suitable examples? About lines, and how to change lines coordinates and animate them?

It’s kind of hard to do “generic” examples with CDD’s, since most uses of them are highly specific to what you’re trying to do. Part of the power of them, however, is that you can get down to the underlying Canvas or Surface object, which then lets you use low-level Pygame drawing primitives. I think that’s what you’d have to do to draw beziers. Unfortunately, as I said, this would be rather Python-heavy, and probably not for the faint of heart.

Doing things like moving clouds and airplanes around would be simpler - you’d just be working with Renders and positioning them. But it’s possible that ATL might be just as good for that.

Note that I’m not a CDD expert - I’ve primarily used them to make custom transitions.

[Per K Grok]

---

But how can I made mowing wires, shaked by wind?
---

The simplest way is to make a repeating animated image and show at the point of the screen where you need the moving wires.

Code: Select all

image wires:
    "wire1.png"
    0.2
    "wire2.png"
    0.2
    "wire3.png"
    0.2
    "wire4.png"
    0.2
    "wire5.png"
    0.2
    "wire6.png"
    0.2
    repeat


----------------------
----------------------


show wires:
    pos(600,50)

[rururubell]

Ok guys. I think about this, and I just draw wires as bunch of semitransparent png's. As Per K Grok said. Of course, now my wires shakes with one frequency. But I think, that won't look too bad. Maybe, i do it with my planes too. Or change planes into flat lines png images, and just move his, like clouds.

Thanks for your answers!

[philat]

I've never really tried this (never had a need) but I remember thinking it looked interesting. Maybe take a look and see if it's what you need.

viewtopic.php?f=51&t=53397&p=503020