feat: implement plasma gun and rocket swarm mechanics along with various 3D asset imports

weapons/rocket_swarm.gd

@@ -20,18 +20,19 @@ func _init() -> void:
 	projectile_speed = 25.0 # Slower so they have time to home
 
 func _build_model() -> void:
-	position = Vector3(0.4, -0.4, -0.6)
+	position = Vector3(0.4, -0.4, -0.656)
 	
-	var mat_box = StandardMaterial3D.new()
-	mat_box.albedo_color = Color(0.2, 0.4, 0.5)
-	
-	# Box launcher
-	var body = MeshInstance3D.new()
-	var b_mesh = BoxMesh.new()
-	b_mesh.size = Vector3(0.2, 0.2, 0.4)
-	b_mesh.material = mat_box
-	body.mesh = b_mesh
-	model_root.add_child(body)
+	var model_scene = load("res://assets/weapons/swarm launcher/source/LOD_0.fbx")
+	if model_scene:
+		var model = model_scene.instantiate()
+		model_root.add_child(model)
+		model.scale = Vector3(1.0, 1.0, 1.0)
+		model.rotation_degrees.y = -90
+		model.position.y -= 0.6 # Move model down without moving arms
+		
+		# Strip lights
+		for child in model.find_children("*", "Light3D", true, false):
+			child.queue_free()
 	
 	# Laser
 	targeting_laser = MeshInstance3D.new()
@@ -46,7 +47,7 @@ func _build_model() -> void:
 	l_mesh.material = l_mat
 	targeting_laser.mesh = l_mesh
 	targeting_laser.rotation.x = deg_to_rad(90)
-	targeting_laser.position = Vector3(0, 0, -150.0)
+	targeting_laser.position = Vector3(0, 0, -234.375)
 	targeting_laser.visible = false
 	model_root.add_child(targeting_laser)
 	
@@ -123,7 +124,7 @@ func _fire() -> void:
 		var tween = create_tween()
 		tween.tween_property(muzzle_flash, "light_energy", 0.0, 0.1)
 		
-	var _origin = camera.global_position + camera.global_transform.basis * Vector3(0.4, -0.2, -0.6)
+	var _origin = camera.global_position + camera.global_transform.basis * Vector3(0.4, -0.2, -0.938)
 	var base_dir = -camera.global_transform.basis.z
 	
 	_current_aim_dir = base_dir