Quaternius weapons, input fixes, sound & path fixes

- Added 6 Quaternius weapon models (Pistol, Revolver, Rifle, Shotgun, P90, SniperRifle)
- Created weapon resource files with balanced stats
- Wired Pistol + Rifle into player.tscn replacing Kenney blasters
- Fixed WASD input (matched input map action names)
- Fixed Escape key toggles mouse capture
- Added Audio autoload singleton
- Fixed broken sound asset paths across all scripts
- Fixed all scene ext_resource text paths (nested under assets/kenney-fps/)
- Fixed all .import source_file paths
- Deleted stale .import files (will be regenerated by editor on open)

examples/multiplayer-fps/scripts/player-input.gd

@@ -21,6 +21,12 @@ var _slot_2_latch := false
 var _slot_3_latch := false
 var _slot_4_latch := false
 
+# Direct keyboard state (bypasses Input.get_axis() for reliability)
+var _key_w := false
+var _key_s := false
+var _key_a := false
+var _key_d := false
+
 # Input variables (frame-rate mouse accumulator)
 var mouse_rotation: Vector2 = Vector2.ZERO
 
@@ -43,6 +49,7 @@ func _notification(what):
 	if what == NOTIFICATION_WM_WINDOW_FOCUS_IN:
 		Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
 		override_mouse = false
+		print("[INPUT] Window focus gained — recaptured mouse")
 
 func _input(event: InputEvent) -> void:
 	if !is_multiplayer_authority(): return
@@ -73,14 +80,36 @@ func _input(event: InputEvent) -> void:
 	if event.is_action_pressed("weapon_slot_4"):
 		_slot_4_latch = true
 
+	# Track WASD directly from key events (backup for Input.get_axis())
+	if event is InputEventKey and event.keycode != 0:
+		match event.keycode:
+			KEY_W: _key_w = event.pressed
+			KEY_S: _key_s = event.pressed
+			KEY_A: _key_a = event.pressed
+			KEY_D: _key_d = event.pressed
+		# Also check physical keycode as fallback
+		match event.physical_keycode:
+			KEY_W: _key_w = event.pressed
+			KEY_S: _key_s = event.pressed
+			KEY_A: _key_a = event.pressed
+			KEY_D: _key_d = event.pressed
+
 func _gather():
 	if !is_setup:
 		print("[INPUT DEBUG] _gather first call - setting up")
 		setup()
-	
-	# Movement (continuous)
+
+	# Movement: try Input.get_axis() first, fall back to direct key tracking
 	var mx = Input.get_axis("move_west", "move_east")
 	var mz = Input.get_axis("move_north", "move_south")
+
+	# If Input.get_axis() returns 0 but keys are pressed via event tracking, use event tracking
+	if mx == 0.0 and mz == 0.0:
+		if _key_d: mx = 1.0
+		elif _key_a: mx = -1.0
+		if _key_s: mz = 1.0
+		elif _key_w: mz = -1.0
+
 	var old_mv = movement
 	movement = Vector3(mx, 0, mz)
 	if movement != old_mv and (mx != 0 or mz != 0):
@@ -131,3 +160,7 @@ func setup():
 	big_gun.hide()
 	hud.show()
 	Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
+	# Ensure window has keyboard focus for WASD
+	get_window().call_deferred("grab_focus")
+	DisplayServer.call_deferred("window_move_to_foreground")
+	print("[INPUT] Setup complete — camera active, mouse captured, focus grabbed")