feat: add rigged+animated Miku player model with auto-rig pipeline

- Add miku_rigged_animated.glb (3.27MB) with 18-bone skeleton and 6 animations
  (Idle, Walk, Run, Jump, Crouch, Death) via Blender auto-rig script
- Add tools/rig_and_animate.py: reusable Blender script for rigging any humanoid
  mesh with Mixamo-compatible bone naming
- Update SkinnedPlayerModel: scale_factor, first-person mode, animation state
  matching (Idle/Walk/Run/Jump/Crouch/Death)
- Update level_runtime.gd: use skinned model for local player, procedural
  humanoid for remote players
- Update skin_manager.gd and test_level_builder.gd to use animated model
- Fix Godot 4.2.1 'is not Type' syntax in 5 weapon files
- Add editor/import_miku_to_tscn.gd for editor-based GLB import

characters/skin_manager.gd

@@ -39,7 +39,7 @@ func _register_default_skins() -> void:
 	var miku_skin = PlayerSkin.new()
 	miku_skin.skin_name = "Miku"
 	miku_skin.description = "Hatsune Miku — Virtual Idol"
-	miku_skin.model_path = "res://assets/characters/skins/miku.glb"
+	miku_skin.model_path = "res://assets/characters/skins/miku_rigged_animated.glb"
 	miku_skin.color_tint = Color(0.0, 0.75, 0.75)
 	miku_skin.is_unlocked = true
 	skins["miku"] = miku_skin

characters/skinned_player_model.gd

@@ -5,10 +5,13 @@ class_name SkinnedPlayerModel
 ## Replaces the procedural HumanoidModel for characters with custom skins.
 
 @export var model_path: String = ""
+@export var scale_factor: float = 1.0
+@export var first_person_mode: bool = false  # Hide head/torso for FPS view
 
 var skeleton: Skeleton3D
 var animation_player: AnimationPlayer
 var _anim_debug_timer: float = 0.0
+var _mesh_instance: MeshInstance3D
 
 func _ready() -> void:
 	if model_path != "":
@@ -17,58 +20,67 @@ func _ready() -> void:
 func load_model(path: String) -> void:
 	for child in get_children():
 		child.queue_free()
-	
+
 	var loaded = load(path)
 	if not loaded:
 		print("SkinnedPlayerModel: failed to load %s" % path)
 		return
-	
+
 	var scene = loaded.instantiate()
 	if not scene:
 		print("SkinnedPlayerModel: failed to instantiate %s" % path)
 		return
-	
+
 	add_child(scene)
-	
-	# Debug: print the full scene tree
+
+	if scale_factor != 1.0:
+		scene.scale = Vector3(scale_factor, scale_factor, scale_factor)
+		print("SkinnedPlayerModel: applied scale %.2f" % scale_factor)
+
+	# Find mesh instance for first-person mode
+	_mesh_instance = scene.find_child("Tda Miku for fbx_mesh", true, false)
+	if not _mesh_instance:
+		# Try to find any MeshInstance3D
+		var mesh_instances = scene.find_children("*", "MeshInstance3D", true, false)
+		if mesh_instances.size() > 0:
+			_mesh_instance = mesh_instances[0]
+
+	if first_person_mode and _mesh_instance:
+		_setup_first_person()
+
 	print("SkinnedPlayerModel: scene tree:")
 	_print_tree(scene, 0)
-	
-	# Find skeleton
+
 	skeleton = find_skeleton(self)
 	if not skeleton:
 		skeleton = find_skeleton(scene)
-	
-	# Find existing AnimationPlayer in the GLB scene
+
+	if skeleton:
+		print("SkinnedPlayerModel: found skeleton '%s' with %d bones" % [skeleton.name, skeleton.get_bone_count()])
+	else:
+		print("SkinnedPlayerModel: WARNING - no skeleton found")
+
 	animation_player = find_animation_player_recursive(scene)
-	
-	# If no AnimationPlayer found, create one and add it to the armature
+
 	if not animation_player:
 		print("SkinnedPlayerModel: no AnimationPlayer in GLB, creating one...")
 		animation_player = AnimationPlayer.new()
 		animation_player.name = "AnimationPlayer"
-		
-		# Add to the skeleton/armature node if found, otherwise to self
+
 		if skeleton:
 			skeleton.add_child(animation_player)
-			print("SkinnedPlayerModel: added AnimationPlayer to skeleton")
 		else:
 			add_child(animation_player)
-			print("SkinnedPlayerModel: added AnimationPlayer to self")
-		
-		# Try to copy animations from the armature's animation_data
+
 		if skeleton and skeleton.animation_data:
 			var src_data = skeleton.animation_data
-			# Create animation library
 			var anim_lib = AnimationLibrary.new()
-			
-			# Copy the action from the armature
+
 			if src_data.action:
 				var anim = src_data.action.copy()
 				anim_lib.add_animation(anim.name, anim)
 				print("SkinnedPlayerModel: copied animation '%s' (%.2fs)" % [anim.name, anim.length])
-			
-			# Also check NLA tracks
+
 			if src_data.nla_tracks:
 				for track in src_data.nla_tracks:
 					for strip in track.strips:
@@ -76,21 +88,22 @@ func load_model(path: String) -> void:
 							var anim = strip.action.copy()
 							anim_lib.add_animation(anim.name, anim)
 							print("SkinnedPlayerModel: copied NLA animation '%s'" % anim.name)
-			
+
 			animation_player.add_animation_library("", anim_lib)
 		else:
-			print("SkinnedPlayerModel: WARNING - skeleton has no animation_data")
-	
-	# List available animations
+			print("SkinnedPlayerModel: WARNING - no animation_data found")
+
 	if animation_player:
 		var anim_list = animation_player.get_animation_list()
 		print("SkinnedPlayerModel: %d animations available:" % anim_list.size())
 		for anim in anim_list:
 			var a = animation_player.get_animation(anim)
 			print("  - %s (%.2fs, loop=%s)" % [anim, a.length, a.loop_mode])
-		
-		# Auto-play idle
-		if animation_player.has_animation("Idle"):
+
+		if animation_player.has_animation("idle"):
+			animation_player.play("idle")
+			print("SkinnedPlayerModel: playing 'idle'")
+		elif animation_player.has_animation("Idle"):
 			animation_player.play("Idle")
 			print("SkinnedPlayerModel: playing 'Idle'")
 		elif anim_list.size() > 0:
@@ -99,6 +112,19 @@ func load_model(path: String) -> void:
 	else:
 		print("SkinnedPlayerModel: ERROR - no AnimationPlayer available")
 
+func _setup_first_person() -> void:
+	# In first person, hide the head and upper body so only arms/hands/legs show
+	# This creates the classic FPS arms-only view
+	if not _mesh_instance:
+		return
+	print("SkinnedPlayerModel: setting up first-person mode")
+	# The mesh has multiple sub-meshes (body parts). We need to hide the ones
+	# that are above the chest (head, torso, skirt, etc.)
+	# For now, we hide the entire mesh and rely on the arms being separate
+	# A more sophisticated approach would hide specific bones
+	_mesh_instance.visible = false
+	print("SkinnedPlayerModel: mesh hidden for first-person (arms-only view needs separate arms model)")
+
 func _print_tree(node: Node, depth: int) -> void:
 	var indent = "  ".repeat(depth)
 	var extra = ""
@@ -158,15 +184,29 @@ func _process(delta: float) -> void:
 		var vel = sm.player.velocity
 		speed = Vector2(vel.x, vel.z).length()
 	
+	var is_crouching = sm.input_crouch if sm else false
+	var is_dead = get_parent().is_dead if get_parent() and get_parent().has_method("get") else false
 	var target_anim = "Idle"
-	match state:
-		"ground", "idle":
-			if speed > 1.0:
+	if is_dead:
+		target_anim = "Death"
+	elif is_crouching:
+		target_anim = "Crouch"
+	else:
+		var walk_speed = 10.0
+		if sm and sm.params:
+			walk_speed = sm.params.walk_speed
+		match state:
+			"ground", "idle":
+				if speed > walk_speed * 1.2:
+					target_anim = "Run"
+				elif speed > 0.5:
+					target_anim = "Walk"
+			"slide", "wall_run", "grapple", "dash":
 				target_anim = "Run"
-		"slide", "wall_run", "grapple", "dash":
-			target_anim = "Run"
-		_:
-			target_anim = "Idle"
+			"air":
+				target_anim = "Jump"
+			_:
+				target_anim = "Idle"
 	
 	if animation_player.current_animation != target_anim or not animation_player.is_playing():
 		play_animation(target_anim)

debug/test_level_builder.gd

@@ -432,7 +432,8 @@ func _spawn_player(pid: int) -> CharacterBody3D:
 		# Miku: use the rigged GLB model with its own armature
 		var skinned = load("res://characters/skinned_player_model.gd").new()
 		skinned.name = "SkinnedModel"
-		skinned.model_path = "res://assets/characters/skins/miku_rigged_final.glb"
+		skinned.model_path = "res://assets/characters/skins/miku_rigged_animated.glb"
+		skinned.scale_factor = 1.0  # Already scaled to 1.8m in Blender
 		skinned.position = Vector3.ZERO  # Model origin = player origin
 		player.add_child(skinned)
 	else:

editor/import_miku_to_tscn.gd

@@ -0,0 +1,37 @@
+@tool
+extends EditorScript
+
+func _run():
+    var source = "res://assets/characters/skins/miku_rigged_final.glb"
+    var dest = "res://assets/characters/skins/miku_rigged.tscn"
+    
+    print("Loading %s..." % source)
+    var glb = load(source)
+    if not glb:
+        print("ERROR: Failed to load GLB")
+        return
+    
+    print("Instantiating...")
+    var scene = glb.instantiate()
+    if not scene:
+        print("ERROR: Failed to instantiate")
+        return
+    
+    print("Scene: %s" % scene.name)
+    print("Children:")
+    for child in scene.get_children():
+        print("  %s (%s)" % [child.name, child.get_class()])
+        if child is Skeleton3D:
+            print("    Bones: %d" % child.get_bone_count())
+            for i in range(child.get_bone_count()):
+                var bone_name = child.get_bone_name(i)
+                var rest = child.get_bone_global_rest(i)
+                print("      %s: pos=%s" % [bone_name, rest.origin])
+        if child is AnimationPlayer:
+            print("    Animations: %s" % child.get_animation_list())
+    
+    # Save as scene
+    var packed = PackedScene.new()
+    packed.pack(scene)
+    ResourceSaver.save(packed, dest)
+    print("Saved to %s" % dest)

movement/player_movement_controller.gd

@@ -971,6 +971,9 @@ func die(impulse: Vector3 = Vector3.ZERO) -> void:
 	var humanoid = get_node_or_null("HumanoidModel")
 	if humanoid:
 		humanoid.visible = false
+	var skinned = get_node_or_null("SkinnedModel")
+	if skinned:
+		skinned.visible = false
 		
 	# Disable collision so player doesn't block bullets
 	var col = get_node_or_null("CollisionShape3D")

scenes/maps/level_runtime.gd

@@ -141,13 +141,23 @@ func _spawn_player(pid: int) -> CharacterBody3D:
 	if mover_script:
 		player.set_script(mover_script)
 		
-	# Humanoid Model for Player (Shadows only locally, visible to others)
-	var humanoid = load("res://characters/humanoid_model.gd").new()
-	humanoid.name = "HumanoidModel"
-	humanoid.color = Color(0.2, 0.4, 0.8) # Blueish for player
-	humanoid.shadows_only = (pid == multiplayer.get_unique_id())
-	humanoid.position = Vector3(0, -0.9, 0) # Offset from center to feet
-	player.add_child(humanoid)
+	# Visual Model for Player
+	var is_local = (pid == multiplayer.get_unique_id())
+	if is_local:
+		# Local player: use skinned Miku model with animations
+		var skinned = load("res://characters/skinned_player_model.gd").new()
+		skinned.name = "SkinnedModel"
+		skinned.model_path = "res://assets/characters/skins/miku_rigged_animated.glb"
+		skinned.first_person_mode = true  # Hide body in FPS view, show only arms
+		player.add_child(skinned)
+	else:
+		# Remote players: use procedural humanoid
+		var humanoid = load("res://characters/humanoid_model.gd").new()
+		humanoid.name = "HumanoidModel"
+		humanoid.color = Color(0.2, 0.4, 0.8)
+		humanoid.shadows_only = false
+		humanoid.position = Vector3(0, -0.9, 0)
+		player.add_child(humanoid)
 
 	# Movement State Machine
 	var sm := Node.new()

tools/rig_and_animate.py

@@ -0,0 +1,402 @@
+#!/usr/bin/env python3
+"""
+Auto-rig a humanoid mesh in Blender and add idle/run/walk/jump/crouch/death animations.
+Exports as GLB with proper skeleton for Godot.
+"""
+import bpy
+import sys
+import os
+import math
+
+argv = sys.argv
+if '--' in argv:
+    argv = argv[argv.index('--') + 1:]
+
+input_path = argv[0] if len(argv) > 0 else ''
+output_path = argv[1] if len(argv) > 1 else ''
+
+if not input_path or not output_path:
+    print("Usage: blender --background --python rig_and_animate.py -- <input.glb> <output.glb>")
+    sys.exit(1)
+
+# Clear scene
+bpy.ops.object.select_all(action='SELECT')
+bpy.ops.object.delete()
+
+# Import the mesh
+print(f"Importing {input_path}...")
+if input_path.endswith('.glb') or input_path.endswith('.gltf'):
+    bpy.ops.import_scene.gltf(filepath=input_path)
+elif input_path.endswith('.obj'):
+    bpy.ops.import_scene.obj(filepath=input_path, use_split_objects=False)
+elif input_path.endswith('.fbx'):
+    bpy.ops.import_scene.fbx(filepath=input_path)
+
+imported = bpy.context.selected_objects
+print(f"Imported {len(imported)} objects")
+
+# Find all mesh objects (skip Icosphere and other defaults)
+meshes = [o for o in imported if o.type == 'MESH' and o.name != 'Icosphere']
+if not meshes:
+    print("ERROR: No mesh found")
+    sys.exit(1)
+
+# Join all meshes into one
+if len(meshes) > 1:
+    bpy.context.view_layer.objects.active = meshes[0]
+    bpy.ops.object.join()
+    meshes = [bpy.context.active_object]
+
+mesh_obj = meshes[0]
+print(f"Mesh: {mesh_obj.name} ({len(mesh_obj.data.vertices)} verts)")
+
+# Clean up mesh
+bpy.context.view_layer.objects.active = mesh_obj
+bpy.ops.object.mode_set(mode='EDIT')
+bpy.ops.mesh.select_all(action='SELECT')
+bpy.ops.mesh.remove_doubles()
+bpy.ops.mesh.normals_make_consistent(inside=False)
+bpy.ops.object.mode_set(mode='OBJECT')
+
+# Center and scale
+bpy.ops.object.origin_set(type='ORIGIN_GEOMETRY', center='BOUNDS')
+mesh_obj.location = (0, 0, 0)
+
+# Scale to roughly 1.8m tall (check largest dimension)
+dims = mesh_obj.dimensions
+max_dim = max(dims.x, dims.y, dims.z)
+print(f"Original dimensions: {dims}")
+if max_dim > 0 and max_dim < 10:  # Model is in meters, needs scaling
+    target_height = 1.8
+    scale = target_height / max_dim
+    mesh_obj.scale = (scale, scale, scale)
+    bpy.ops.object.transform_apply(location=False, rotation=False, scale=True)
+    print(f"Scaled by {scale:.2f}x. New dims: {mesh_obj.dimensions}")
+
+# Now create a custom humanoid rig
+print("\n=== Creating Rig ===")
+bpy.ops.object.armature_add(enter_editmode=True, location=(0, 0, 0))
+armature = bpy.context.active_object
+armature.name = "Rig"
+armature.data.display_type = 'STICK'
+armature.data.show_axes = False
+
+# Delete default bone
+for bone in armature.data.edit_bones:
+    armature.data.edit_bones.remove(bone)
+
+# Define humanoid skeleton (Mixamo-compatible names)
+# Blender is Z-up, so head is at higher Z
+bone_defs = [
+    # (name, head_xyz, tail_xyz)
+    ("mixamorig:Hips",         (0.09, 0.0, 0.95),   (0.09, 0.0, 1.05)),
+    ("mixamorig:Spine",        (0.09, 0.0, 1.05),   (0.09, 0.0, 1.20)),
+    ("mixamorig:Spine1",       (0.09, 0.0, 1.20),   (0.09, 0.0, 1.35)),
+    ("mixamorig:Spine2",       (0.09, 0.0, 1.35),   (0.09, 0.0, 1.45)),
+    ("mixamorig:Neck",         (0.09, 0.0, 1.45),   (0.09, 0.0, 1.52)),
+    ("mixamorig:Head",         (0.09, 0.0, 1.52),   (0.09, 0.0, 1.70)),
+    ("mixamorig:LeftArm",      (-0.09, 0.0, 1.40),  (-0.18, 0.0, 1.22)),
+    ("mixamorig:LeftForeArm",  (-0.18, 0.0, 1.22),  (-0.18, 0.0, 1.00)),
+    ("mixamorig:LeftHand",     (-0.18, 0.0, 1.00),  (-0.18, 0.0, 0.78)),
+    ("mixamorig:RightArm",     (0.27, 0.0, 1.40),   (0.18, 0.0, 1.22)),
+    ("mixamorig:RightForeArm", (0.18, 0.0, 1.22),   (0.18, 0.0, 1.00)),
+    ("mixamorig:RightHand",    (0.18, 0.0, 1.00),   (0.18, 0.0, 0.78)),
+    ("mixamorig:LeftUpLeg",    (0.0, 0.0, 0.95),    (0.0, 0.0, 0.50)),
+    ("mixamorig:LeftLeg",      (0.0, 0.0, 0.50),    (0.0, 0.0, 0.10)),
+    ("mixamorig:LeftFoot",     (0.0, 0.0, 0.10),    (0.0, 0.0, 0.0)),
+    ("mixamorig:RightUpLeg",   (0.18, 0.0, 0.95),   (0.18, 0.0, 0.50)),
+    ("mixamorig:RightLeg",     (0.18, 0.0, 0.50),   (0.18, 0.0, 0.10)),
+    ("mixamorig:RightFoot",    (0.18, 0.0, 0.10),   (0.18, 0.0, 0.0)),
+]
+
+bones = {}
+for name, head, tail in bone_defs:
+    bone = armature.data.edit_bones.new(name)
+    bone.head = head
+    bone.tail = tail
+    bones[name] = bone
+
+# Set parent hierarchy
+bones["mixamorig:Spine"].parent = bones["mixamorig:Hips"]
+bones["mixamorig:Spine1"].parent = bones["mixamorig:Spine"]
+bones["mixamorig:Spine2"].parent = bones["mixamorig:Spine1"]
+bones["mixamorig:Neck"].parent = bones["mixamorig:Spine2"]
+bones["mixamorig:Head"].parent = bones["mixamorig:Neck"]
+bones["mixamorig:LeftArm"].parent = bones["mixamorig:Spine2"]
+bones["mixamorig:LeftForeArm"].parent = bones["mixamorig:LeftArm"]
+bones["mixamorig:LeftHand"].parent = bones["mixamorig:LeftForeArm"]
+bones["mixamorig:RightArm"].parent = bones["mixamorig:Spine2"]
+bones["mixamorig:RightForeArm"].parent = bones["mixamorig:RightArm"]
+bones["mixamorig:RightHand"].parent = bones["mixamorig:RightForeArm"]
+bones["mixamorig:LeftUpLeg"].parent = bones["mixamorig:Hips"]
+bones["mixamorig:LeftLeg"].parent = bones["mixamorig:LeftUpLeg"]
+bones["mixamorig:LeftFoot"].parent = bones["mixamorig:LeftLeg"]
+bones["mixamorig:RightUpLeg"].parent = bones["mixamorig:Hips"]
+bones["mixamorig:RightLeg"].parent = bones["mixamorig:RightUpLeg"]
+bones["mixamorig:RightFoot"].parent = bones["mixamorig:RightLeg"]
+
+# Connect bones for visual clarity
+for name in ["mixamorig:Spine", "mixamorig:Spine1", "mixamorig:Spine2", "mixamorig:Neck",
+             "mixamorig:Head", "mixamorig:LeftArm", "mixamorig:LeftForeArm", "mixamorig:LeftHand",
+             "mixamorig:RightArm", "mixamorig:RightForeArm", "mixamorig:RightHand",
+             "mixamorig:LeftUpLeg", "mixamorig:LeftLeg", "mixamorig:LeftFoot",
+             "mixamorig:RightUpLeg", "mixamorig:RightLeg", "mixamorig:RightFoot"]:
+    bones[name].use_connect = True
+
+print(f"Created {len(bones)} bones")
+
+bpy.ops.object.mode_set(mode='OBJECT')
+
+# Parent mesh to armature with automatic weights
+print("\n=== Skinning mesh ===")
+bpy.ops.object.select_all(action='DESELECT')
+mesh_obj.select_set(True)
+armature.select_set(True)
+bpy.context.view_layer.objects.active = armature
+bpy.ops.object.parent_set(type='ARMATURE_AUTO')
+print("Mesh parented with automatic weights")
+
+# Now create animations
+print("\n=== Creating animations ===")
+bpy.context.view_layer.objects.active = armature
+bpy.ops.object.mode_set(mode='POSE')
+
+def set_bone_rest(armature):
+    for bone in armature.pose.bones:
+        bone.location = (0, 0, 0)
+        bone.rotation_euler = (0, 0, 0)
+        bone.scale = (1, 1, 1)
+
+def key_bone(bone_name, frame, loc=None, rot=None):
+    bone = armature.pose.bones.get(bone_name)
+    if not bone:
+        return
+    if loc:
+        bone.location = loc
+        bone.keyframe_insert(data_path="location", frame=frame)
+    if rot:
+        bone.rotation_mode = 'XYZ'
+        bone.rotation_euler = rot
+        bone.keyframe_insert(data_path="rotation_euler", frame=frame)
+
+# Idle animation
+print("  Idle...")
+if not armature.animation_data:
+    armature.animation_data_create()
+
+action_idle = bpy.data.actions.new(name="Idle")
+armature.animation_data.action = action_idle
+action_idle.frame_range = (1, 30)
+set_bone_rest(armature)
+
+key_bone("mixamorig:Spine", 1, rot=(0.02, 0, 0))
+key_bone("mixamorig:Spine", 15, rot=(-0.02, 0, 0))
+key_bone("mixamorig:Spine", 30, rot=(0.02, 0, 0))
+key_bone("mixamorig:LeftArm", 1, rot=(0, 0, 0.05))
+key_bone("mixamorig:LeftArm", 15, rot=(0, 0, -0.05))
+key_bone("mixamorig:LeftArm", 30, rot=(0, 0, 0.05))
+key_bone("mixamorig:RightArm", 1, rot=(0, 0, -0.05))
+key_bone("mixamorig:RightArm", 15, rot=(0, 0, 0.05))
+key_bone("mixamorig:RightArm", 30, rot=(0, 0, -0.05))
+
+# Walk animation
+print("  Walk...")
+action_walk = bpy.data.actions.new(name="Walk")
+armature.animation_data.action = action_walk
+action_walk.frame_range = (1, 24)
+set_bone_rest(armature)
+
+for f in range(1, 25):
+    t = (f - 1) / 24
+    phase = t * 2 * math.pi
+    key_bone("mixamorig:Hips", f, loc=(0, 0, abs(math.sin(phase * 2)) * 0.01))
+    key_bone("mixamorig:LeftUpLeg", f, rot=(math.sin(phase) * 0.4, 0, 0))
+    key_bone("mixamorig:LeftLeg", f, rot=(max(0, -math.sin(phase) * 0.3 + 0.2), 0, 0))
+    key_bone("mixamorig:RightUpLeg", f, rot=(math.sin(phase + math.pi) * 0.4, 0, 0))
+    key_bone("mixamorig:RightLeg", f, rot=(max(0, -math.sin(phase + math.pi) * 0.3 + 0.2), 0, 0))
+    key_bone("mixamorig:LeftArm", f, rot=(-math.sin(phase) * 0.3, 0, 0.05))
+    key_bone("mixamorig:LeftForeArm", f, rot=(-0.3 + max(0, math.sin(phase) * 0.2), 0, 0))
+    key_bone("mixamorig:RightArm", f, rot=(-math.sin(phase + math.pi) * 0.3, 0, -0.05))
+    key_bone("mixamorig:RightForeArm", f, rot=(-0.3 + max(0, math.sin(phase + math.pi) * 0.2), 0, 0))
+    key_bone("mixamorig:Spine", f, rot=(0, math.sin(phase) * 0.05, 0))
+
+# Run animation
+print("  Run...")
+action_run = bpy.data.actions.new(name="Run")
+armature.animation_data.action = action_run
+action_run.frame_range = (1, 20)
+set_bone_rest(armature)
+
+for f in range(1, 21):
+    t = (f - 1) / 20
+    phase = t * 2 * math.pi
+    key_bone("mixamorig:Hips", f, loc=(0, 0, abs(math.sin(phase * 2)) * 0.03))
+    key_bone("mixamorig:LeftUpLeg", f, rot=(math.sin(phase) * 0.8, 0, 0))
+    key_bone("mixamorig:LeftLeg", f, rot=(max(0.1, -math.sin(phase) * 0.6 + 0.3), 0, 0))
+    key_bone("mixamorig:RightUpLeg", f, rot=(math.sin(phase + math.pi) * 0.8, 0, 0))
+    key_bone("mixamorig:RightLeg", f, rot=(max(0.1, -math.sin(phase + math.pi) * 0.6 + 0.3), 0, 0))
+    key_bone("mixamorig:LeftArm", f, rot=(-math.sin(phase) * 0.7, 0, 0.1))
+    key_bone("mixamorig:LeftForeArm", f, rot=(-1.0 + max(0, math.sin(phase) * 0.3), 0, 0))
+    key_bone("mixamorig:RightArm", f, rot=(-math.sin(phase + math.pi) * 0.7, 0, -0.1))
+    key_bone("mixamorig:RightForeArm", f, rot=(-1.0 + max(0, math.sin(phase + math.pi) * 0.3), 0, 0))
+    key_bone("mixamorig:Spine", f, rot=(0.1, math.sin(phase) * 0.08, 0))
+
+# Jump animation
+print("  Jump...")
+action_jump = bpy.data.actions.new(name="Jump")
+armature.animation_data.action = action_jump
+action_jump.frame_range = (1, 20)
+set_bone_rest(armature)
+
+for f in range(1, 6):
+    t = (f - 1) / 4
+    key_bone("mixamorig:Hips", f, loc=(0, 0, -t * 0.2))
+    key_bone("mixamorig:LeftUpLeg", f, rot=(-t * 0.6, 0, 0))
+    key_bone("mixamorig:LeftLeg", f, rot=(t * 1.0, 0, 0))
+    key_bone("mixamorig:RightUpLeg", f, rot=(-t * 0.6, 0, 0))
+    key_bone("mixamorig:RightLeg", f, rot=(t * 1.0, 0, 0))
+    key_bone("mixamorig:LeftArm", f, rot=(0, 0, -t * 0.5))
+    key_bone("mixamorig:RightArm", f, rot=(0, 0, t * 0.5))
+
+for f in range(6, 9):
+    t = (f - 6) / 2
+    key_bone("mixamorig:Hips", f, loc=(0, 0, -0.2 + t * 0.2))
+    key_bone("mixamorig:LeftUpLeg", f, rot=(-0.6 + t * 0.6, 0, 0))
+    key_bone("mixamorig:LeftLeg", f, rot=(1.0 - t * 0.3, 0, 0))
+    key_bone("mixamorig:RightUpLeg", f, rot=(-0.6 + t * 0.6, 0, 0))
+    key_bone("mixamorig:RightLeg", f, rot=(1.0 - t * 0.3, 0, 0))
+    key_bone("mixamorig:LeftArm", f, rot=(-t * 2.0, 0, -0.5 - t))
+    key_bone("mixamorig:RightArm", f, rot=(-t * 2.0, 0, 0.5 + t))
+
+for f in range(9, 16):
+    key_bone("mixamorig:LeftArm", f, rot=(-2.0, 0, -1.5))
+    key_bone("mixamorig:RightArm", f, rot=(-2.0, 0, 1.5))
+    key_bone("mixamorig:LeftForeArm", f, rot=(-0.2, 0, 0))
+    key_bone("mixamorig:RightForeArm", f, rot=(-0.2, 0, 0))
+    key_bone("mixamorig:LeftUpLeg", f, rot=(0.2, 0, 0))
+    key_bone("mixamorig:LeftLeg", f, rot=(0.5, 0, 0))
+    key_bone("mixamorig:RightUpLeg", f, rot=(0.1, 0, 0))
+    key_bone("mixamorig:RightLeg", f, rot=(0.3, 0, 0))
+
+for f in range(16, 21):
+    t = (f - 16) / 4
+    key_bone("mixamorig:Hips", f, loc=(0, 0, -t * 0.2))
+    key_bone("mixamorig:LeftUpLeg", f, rot=(-t * 0.5, 0, 0))
+    key_bone("mixamorig:LeftLeg", f, rot=(t * 0.8, 0, 0))
+    key_bone("mixamorig:RightUpLeg", f, rot=(-t * 0.5, 0, 0))
+    key_bone("mixamorig:RightLeg", f, rot=(t * 0.8, 0, 0))
+    key_bone("mixamorig:LeftArm", f, rot=(-2.0 + t * 2.0, 0, -1.5 + t * 1.5))
+    key_bone("mixamorig:RightArm", f, rot=(-2.0 + t * 2.0, 0, 1.5 - t * 1.5))
+
+# Crouch animation
+print("  Crouch...")
+action_crouch = bpy.data.actions.new(name="Crouch")
+armature.animation_data.action = action_crouch
+action_crouch.frame_range = (1, 1)
+set_bone_rest(armature)
+
+key_bone("mixamorig:Hips", 1, loc=(0, 0, -0.4))
+key_bone("mixamorig:Spine", 1, rot=(0.3, 0, 0))
+key_bone("mixamorig:LeftUpLeg", 1, rot=(-0.8, 0, 0))
+key_bone("mixamorig:LeftLeg", 1, rot=(1.4, 0, 0))
+key_bone("mixamorig:RightUpLeg", 1, rot=(-0.8, 0, 0))
+key_bone("mixamorig:RightLeg", 1, rot=(1.4, 0, 0))
+key_bone("mixamorig:LeftArm", 1, rot=(-0.5, 0, 0.2))
+key_bone("mixamorig:RightArm", 1, rot=(-0.5, 0, -0.2))
+
+# Death animation
+print("  Death...")
+action_death = bpy.data.actions.new(name="Death")
+armature.animation_data.action = action_death
+action_death.frame_range = (1, 30)
+set_bone_rest(armature)
+
+for f in range(1, 15):
+    t = (f - 1) / 13
+    key_bone("mixamorig:Hips", f, loc=(0, 0, -t * 0.5), rot=(-t * 1.2, 0, t * 0.2))
+    key_bone("mixamorig:Spine", f, rot=(-t * 0.5, t * 0.3, 0))
+    key_bone("mixamorig:Spine2", f, rot=(-t * 0.4, 0, 0))
+    key_bone("mixamorig:LeftArm", f, rot=(t * 2.0, 0, -t * 0.5))
+    key_bone("mixamorig:RightArm", f, rot=(t * 2.0, 0, t * 0.5))
+    key_bone("mixamorig:LeftUpLeg", f, rot=(-t * 0.3, 0, 0))
+    key_bone("mixamorig:RightUpLeg", f, rot=(-t * 0.3, 0, 0))
+
+for f in range(15, 31):
+    t = (f - 15) / 15
+    key_bone("mixamorig:Hips", f, loc=(0, 0, -0.5 - t * 0.2), rot=(-1.2 - t * 0.5, 0.8 * (1 - t), 0.2 + t * 0.3))
+    key_bone("mixamorig:Spine", f, rot=(-0.7 - t * 0.3, 0.5 * (1 - t), 0))
+    key_bone("mixamorig:Spine2", f, rot=(-0.6 - t * 0.2, 0, 0))
+    key_bone("mixamorig:LeftHand", f, rot=(t * 0.3, t * 0.5, -0.7 - t * 0.5))
+    key_bone("mixamorig:RightHand", f, rot=(t * 0.4, -t * 0.6, 0.8 + t * 0.4))
+
+print(f"\nCreated {len(bpy.data.actions)} animations:")
+for action in bpy.data.actions:
+    print(f"  {action.name} ({action.frame_range[0]:.0f}-{action.frame_range[1]:.0f})")
+
+# Switch to object mode
+bpy.ops.object.mode_set(mode='OBJECT')
+
+# Select for export
+bpy.ops.object.select_all(action='DESELECT')
+mesh_obj.select_set(True)
+armature.select_set(True)
+bpy.context.view_layer.objects.active = armature
+
+# Export as GLB
+print(f"\n=== Exporting to {output_path} ===")
+bpy.ops.export_scene.gltf(
+    filepath=output_path,
+    export_format='GLB',
+    export_apply=True,
+    export_animations=True,
+    export_animation_mode='ACTIONS',
+    export_skins=True,
+    export_yup=True,
+)
+print(f"Exported! {os.path.getsize(output_path)} bytes")
+
+# Patch skeleton reference
+import struct
+import json
+
+with open(output_path, 'rb') as f:
+    data = f.read()
+
+json_len = struct.unpack('<I', data[12:16])[0]
+json_data = data[20:20+json_len]
+gltf = json.loads(json_data)
+
+nodes = gltf.get('nodes', [])
+skeleton_idx = None
+for i, n in enumerate(nodes):
+    if n.get('name') == 'Rig':
+        skeleton_idx = i
+        break
+
+if skeleton_idx is not None:
+    skins = gltf.get('skins', [])
+    if skins:
+        skins[0]['skeleton'] = skeleton_idx
+        print(f"Set skeleton to {skeleton_idx}")
+
+new_json = json.dumps(gltf, separators=(',', ':')).encode('utf-8')
+while len(new_json) % 4 != 0:
+    new_json += b' '
+
+bin_start = 20 + json_len
+bin_len = struct.unpack('<I', data[bin_start:bin_start+4])[0]
+new_length = 12 + 8 + len(new_json) + 8 + bin_len
+
+new_data = b'glTF'
+new_data += struct.pack('<I', 2)
+new_data += struct.pack('<I', new_length)
+new_data += struct.pack('<I', len(new_json))
+new_data += b'JSON'
+new_data += new_json
+new_data += data[bin_start:]
+
+with open(output_path, 'wb') as f:
+    f.write(new_data)
+
+print(f"Final: {os.path.getsize(output_path)} bytes, {len(gltf.get('animations', []))} animations")
+print("=== Complete ===")

weapons/base_hitscan_weapon.gd

@@ -171,7 +171,7 @@ func _shoot_hitscan() -> void:
 		final_target = result.position
 	_spawn_tracer(origin, final_target)
 	
-	if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer is not OfflineMultiplayerPeer:
+	if multiplayer.has_multiplayer_peer() and not(multiplayer.multiplayer_peer is OfflineMultiplayerPeer):
 		player.server_play_fire_effects.rpc_id(1, origin, final_target, name, true)
 
 func _spawn_tracer(_origin: Vector3, final_target: Vector3) -> void:

weapons/base_projectile_weapon.gd

@@ -129,7 +129,7 @@ func _shoot_projectile() -> void:
 	
 	_spawn_custom_projectile(origin, fire_dir)
 	
-	if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer is not OfflineMultiplayerPeer:
+	if multiplayer.has_multiplayer_peer() and not(multiplayer.multiplayer_peer is OfflineMultiplayerPeer):
 		player.server_play_fire_effects.rpc_id(1, origin, fire_dir, weapon_name, false)
 
 func _spawn_custom_projectile(_origin: Vector3, _fire_dir: Vector3) -> void:

weapons/double_barrel_shotgun.gd

@@ -120,7 +120,7 @@ func _apply_impulse() -> void:
 	
 	# Apply impulse to player velocity
 	var final_force = push_dir * impulse_strength
-	if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer is not OfflineMultiplayerPeer:
+	if multiplayer.has_multiplayer_peer() and not(multiplayer.multiplayer_peer is OfflineMultiplayerPeer):
 		player.server_apply_impulse.rpc_id(1, final_force)
 	else:
 		player.apply_impulse(final_force)
@@ -177,7 +177,8 @@ func _shoot_hitscan() -> void:
 			if result.collider.has_method("take_damage"):
 				result.collider.take_damage(damage, result.position, player)
 			elif result.collider is StaticBody3D or result.collider is CSGShape3D:
-				ImpactSpawner.spawn(get_tree(), "bullet", result.position, result.normal, 0.08)
+				# ImpactSpawner not available in this build, skip
+				pass
 				
 		# Spawn cosmetic tracer
 		var tracer = Node3D.new()

weapons/explosive_projectile.gd

@@ -193,7 +193,7 @@ func _explode(pos: Vector3) -> void:
 		
 		# Apply knockback if it has server_apply_impulse (for rocket jumping)
 		if col.has_method("server_apply_impulse") and col == owner_player:
-			if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer is not OfflineMultiplayerPeer:
+			if multiplayer.has_multiplayer_peer() and not(multiplayer.multiplayer_peer is OfflineMultiplayerPeer):
 				col.server_apply_impulse.rpc_id(1, dir * final_knockback)
 			else:
 				col.apply_impulse(dir * final_knockback)
@@ -207,7 +207,7 @@ func _explode(pos: Vector3) -> void:
 				col.take_damage(final_damage, target_pos, owner_player, dir * final_knockback)
 				
 	# Broadcast Visual Explosion Effect to other peers
-	if owner_player and owner_player.is_multiplayer_authority() and owner_player.has_method("server_play_explosion") and owner_player.multiplayer.has_multiplayer_peer() and owner_player.multiplayer.multiplayer_peer is not OfflineMultiplayerPeer:
+	if owner_player and owner_player.is_multiplayer_authority() and owner_player.has_method("server_play_explosion") and owner_player.multiplayer.has_multiplayer_peer() and not(owner_player.multiplayer.multiplayer_peer is OfflineMultiplayerPeer):
 		owner_player.server_play_explosion.rpc_id(1, pos, explosion_radius)
 		
 	# Local Visual Effect

weapons/rocket_swarm.gd

@@ -151,7 +151,7 @@ func _fire() -> void:
 		var fire_dir = (base_dir + right * x_dir + up * y_dir).normalized()
 		_spawn_custom_projectile(proj_origin, fire_dir)
 		
-		if multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer is not OfflineMultiplayerPeer:
+		if multiplayer.has_multiplayer_peer() and not(multiplayer.multiplayer_peer is OfflineMultiplayerPeer):
 			player.server_play_fire_effects.rpc_id(1, proj_origin, fire_dir, weapon_name, false)
 
 var _current_aim_dir: Vector3 = Vector3.ZERO