How do I simulate 2D grass physics?

Question

Hello! I would like to recreate an effect similar to the one in the gif below, can someone point me to the right direction?

Comments

Did you find a solution? I have done something similar to this in the past in Gamemaker. I am going to try and convert it into Godot. Here's the tutorial reference:

https://zackbellgames.com/2014/11/11/sprite-skewing-for-procedural-animation/

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I decided to go into more of the mechanics of my project instead of making it look good first, so I'm yet to try to make this.

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I'm doing the same. If I figure out a solution I'll share it with you.

Answer 1

The swaying effect is often achieved with pixel shaders.

The image you provided also appears to have some particle effects, which are easy to pick out because they are a lighter shade of green.

This is a Unity tutorial explaining the concepts for 3D, which you can translate/simplify to do it in 2D with Godot:
https://www.youtube.com/watch?v=aKzUsxLJ4SU

You may also wish to combine it with this technique to smooth out the 2D motion:
https://www.youtube.com/watch?v=2JbhkZe22bE

Answer 2

Hey,

I found this shader, which works as you want except it doesn't move more when you walk on it...

https://github.com/Maujoe/godot-simple-wind-shader-2d/tree/master/assets/maujoe.simple_wind_shader_2d

You have to play with the shader parameter, then, you'll get something like that :
https://twitter.com/i/status/1341827250082230279

Answer 3

I know maybe this is an old thread, but I want to try to provide the results of my experiment, I hope it helps too

1. Download 2s wind sway shader

2. Modify the shader script by adding

   uniform float skew: hint_range(-500.0, 500.0) = 0;

   // vertex method
   if (skew != 0.0) {
   VERTEX.x += max(0.0, (1.0-UV.y) - heightOffset) * (skew / 12.0);
   }

3. Set the value of the skew variable when the character touches it

source code