Add convex hull modifier after decimating convex collisions

[Weisl]

Is super fast and makes sure that the colliders are still convex. It should be handled by the engine anyway.
OPTIONAL???

[Weisl]

Create geometry nodes modifier with convex hull

import bpy

def geometry_node_group_empty_new():
    group = bpy.data.node_groups.new("Convex_Hull", 'GeometryNodeTree')
    group.inputs.new('NodeSocketGeometry', "Geometry")
    group.outputs.new('NodeSocketGeometry', "Geometry")
    input_node = group.nodes.new('NodeGroupInput')
    output_node = group.nodes.new('NodeGroupOutput')
    output_node.is_active_output = True

    input_node.select = False
    output_node.select = False

    input_node.location.x = -200 - input_node.width
    output_node.location.x = 200

    group.links.new(output_node.inputs[0], input_node.outputs[0])

    return group


if bpy.data.node_groups['Convex_Hull']:
    group = bpy.data.node_groups['Convex_Hull'] 
    
else: 
    group = geometry_node_group_empty_new()
    nodes = group.nodes

    geom_in = nodes.get('Group Input')
    geom_out = nodes.get('Group Output')
    hull_node = nodes.new('GeometryNodeConvexHull')

    group.links.new(geom_in.outputs[0], hull_node.inputs[0])
    group.links.new(hull_node.outputs[0], geom_out.inputs[0])

modifier = bpy.context.object.modifiers.new(name="Convex_Hull", type='NODES')
modifier.node_group = group