feat: add state machine movement classes, double barrel shotgun weapon, and test level builder utility

debug/test_level_builder.gd

@@ -64,8 +64,8 @@ func _build_input_map() -> void:
 		"sprint": [KEY_SHIFT],
 		"crouch": [KEY_CTRL],
 		"dash": [KEY_SHIFT],
-		"fire": [MOUSE_BUTTON_RIGHT, KEY_F],
-		"fire_alt": [MOUSE_BUTTON_LEFT],
+		"fire": [MOUSE_BUTTON_LEFT, KEY_F],
+		"fire_alt": [MOUSE_BUTTON_RIGHT],
 		"reload": [KEY_R],
 		"interact": [KEY_E],
 		"move_forward": [KEY_W],
@@ -262,8 +262,9 @@ func _build_lighting() -> void:
 func _build_player() -> void:
 	var player := CharacterBody3D.new()
 	player.name = "Player"
-	player.position = Vector3(0, 1.0, 8)
+	player.position = Vector3(0, 1.0, 0)
 	add_child(player)
+	_player = player
 
 	# Collision shape
 	var col_shape := CollisionShape3D.new()
@@ -316,6 +317,16 @@ func _build_player() -> void:
 	camera.current = true
 	camera.fov = 90.0
 	head_pivot.add_child(camera)
+	
+	# ── Temporary Weapon Setup ──────────────────────────────────────────────────
+	# TODO: Change how the player is given weapons in the future to a loadout schema.
+	var shotgun_script = preload("res://weapons/double_barrel_shotgun.gd")
+	if shotgun_script:
+		var shotgun = shotgun_script.new()
+		shotgun.name = "DoubleBarrelShotgun"
+		shotgun.player = player
+		shotgun.camera = camera
+		camera.add_child(shotgun)
 
 	var rig_script = preload("res://characters/player/fps_camera_rig.gd")
 	if rig_script: