Player has rigid-body collisions

levels/physics_test/physics_test.tscn

@@ -122,9 +122,9 @@ shape = SubResource("WorldBoundaryShape3D_6j7vt")
 
 [node name="MedBox" type="RigidBody3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 6, 1.2, -6)
-collision_layer = 6
+collision_layer = 7
 collision_mask = 9
-mass = 10.0
+mass = 50.0
 
 [node name="MeshInstance3D" type="MeshInstance3D" parent="MedBox"]
 mesh = SubResource("BoxMesh_252gx")
@@ -139,9 +139,9 @@ metadata/_custom_type_script = "uid://040xta01xqxd"
 
 [node name="BigBox" type="RigidBody3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 10.5, 1.8, -6)
-collision_layer = 6
+collision_layer = 7
 collision_mask = 9
-mass = 50.0
+mass = 500.0
 
 [node name="MeshInstance3D" type="MeshInstance3D" parent="BigBox"]
 mesh = SubResource("BoxMesh_35l2h")

src/player/player.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=66 format=3 uid="uid://bwe2jdmvinhqd"]
+[gd_scene load_steps=67 format=3 uid="uid://bwe2jdmvinhqd"]
 
 [ext_resource type="Script" uid="uid://buwh0g1ga2aka" path="res://src/player/player.gd" id="1_npueo"]
 [ext_resource type="Script" uid="uid://cx1yt0drthpw3" path="res://src/player/camera_controller.gd" id="2_veeqv"]
@@ -35,6 +35,7 @@
 [ext_resource type="AudioStream" uid="uid://djucfo3l7x7px" path="res://assets/sfx/footsteps/plastic/plastic3.wav" id="29_wcxbk"]
 [ext_resource type="AudioStream" uid="uid://ck86vhmbg3xnj" path="res://assets/sfx/footsteps/plastic/plastic5.wav" id="30_p6grl"]
 [ext_resource type="Script" uid="uid://c5o1d2shq2qig" path="res://src/world/game_sound/game_sound_emitter.gd" id="31_wcxbk"]
+[ext_resource type="Script" uid="uid://b5loa2u6s5l5c" path="res://src/player/rigid_body_physics.gd" id="36_phdu6"]
 
 [sub_resource type="Animation" id="Animation_x42xx"]
 length = 0.001
@@ -796,3 +797,6 @@ libraries = {
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -1, 0)
 visible = false
 mesh = SubResource("PlaneMesh_p6grl")
+
+[node name="RigidBodyPhysics" type="Node" parent="."]
+script = ExtResource("36_phdu6")

src/player/rigid_body_physics.gd

@@ -0,0 +1,31 @@
+extends Node
+## Component to simulate rigid body interactions with a CharacterBody3D.
+
+## Base collision force (will scale with impact velocity)
+@export_range(0.0, 500.0, 0.1) var force := 50.0
+
+## Lower bound for collision speed scaling.
+@export var min_speed := 1.0
+
+## Upper bound for collision speed scaling.
+@export var max_speed := 10.0
+
+## Toggle rigid body interactions.
+@export var enabled := true
+
+@onready var controller := owner as CharacterBody3D
+
+
+func _physics_process(_delta: float) -> void:
+	if not enabled:
+		return
+
+	for i: int in controller.get_slide_collision_count():
+		var collision := controller.get_slide_collision(i)
+		for j: int in collision.get_collision_count():
+			var collider := collision.get_collider(j) as RigidBody3D
+			if collider:
+				var direction := -collision.get_normal()
+				var speed := clampf(controller.velocity.length(), min_speed, max_speed)
+				var offset := collision.get_position(j) - collider.global_position
+				collider.apply_impulse(direction * speed * force, offset)

src/player/rigid_body_physics.gd.uid

@@ -0,0 +1 @@
+uid://b5loa2u6s5l5c