add debug collision shape

scripts/debug/debug_collision_shapes.gd

@@ -0,0 +1,59 @@
+class_name DebugCollisionShapes
+extends RefCounted
+
+var _mesh_nodes: Array[MeshInstance3D] = []
+
+
+func init(children: Array[Node], parent: Node, material: Material) -> void:
+	for child in children:
+		if child is not CollisionShape3D:
+			continue
+		var shape_node: CollisionShape3D = child as CollisionShape3D
+		if shape_node.shape == null:
+			continue
+
+		var mesh_node := MeshInstance3D.new()
+		if shape_node.shape is BoxShape3D:
+			var shape := shape_node.shape as BoxShape3D
+			var mesh := BoxMesh.new()
+			mesh.size = shape.size
+			mesh_node.mesh = mesh
+		if shape_node.shape is CapsuleShape3D:
+			var shape := shape_node.shape as CapsuleShape3D
+			var mesh := CapsuleMesh.new()
+			mesh.radius = shape.radius
+			mesh.height = shape.height
+			mesh.radial_segments = 8
+			mesh.rings = 1
+			mesh_node.mesh = mesh
+		if shape_node.shape is SphereShape3D:
+			var shape := shape_node.shape as SphereShape3D
+			var mesh := SphereMesh.new()
+			mesh.radius = shape.radius
+			mesh.height = shape.radius * 2
+			mesh.radial_segments = 8
+			mesh.rings = 4
+			mesh_node.mesh = mesh
+		if shape_node.shape is CylinderShape3D:
+			var shape := shape_node.shape as CylinderShape3D
+			var mesh := CylinderMesh.new()
+			mesh.top_radius = shape.radius
+			mesh.bottom_radius = shape.radius
+			mesh.height = shape.height
+			mesh.radial_segments = 8
+			mesh.rings = 0
+			mesh_node.mesh = mesh
+
+		mesh_node.material_override = material
+		mesh_node.cast_shadow = GeometryInstance3D.SHADOW_CASTING_SETTING_OFF
+		mesh_node.visible = false
+		parent.add_child(mesh_node)
+		mesh_node.global_transform = (child as Node3D).global_transform
+		_mesh_nodes.append(mesh_node)
+
+	Debugger.mode_changed.connect(_on_debugger_mode_changed)
+
+
+func _on_debugger_mode_changed(mode: Debugger.Mode) -> void:
+	for mesh_node in _mesh_nodes:
+		mesh_node.visible = mode == Debugger.Mode.FULL

scripts/player/player.gd

@@ -2,16 +2,19 @@ class_name Player
 extends CharacterBody3D
 
 @export var _respawn_height: float = -5
+@export var _collision_debug_material: Material
 
 var movement: PlayerMovement = PlayerMovement.new()
 var aiming: PlayerAiming = PlayerAiming.new()
 
 var _respawn_point: Vector3
+var _debug_collision_shapes := DebugCollisionShapes.new()
 
 
 func _ready() -> void:
 	_respawn_point = global_position
 	Referencer.player = self
+	_debug_collision_shapes.init(get_children(), self, _collision_debug_material)
 
 
 func _process(_delta: float) -> void: