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

weapons/mp7.gd

@@ -14,52 +14,16 @@ func _init() -> void:
 	spread_angle = 0.025
 
 func _build_model() -> void:
-	position = Vector3(0.25, -0.25, -0.5)
-	
-	var black_mat = StandardMaterial3D.new()
-	black_mat.albedo_color = Color(0.05, 0.05, 0.05)
-	
-	# Receiver
-	var receiver = MeshInstance3D.new()
-	var rec_mesh = BoxMesh.new()
-	rec_mesh.size = Vector3(0.04, 0.1, 0.2)
-	rec_mesh.material = black_mat
-	receiver.mesh = rec_mesh
-	receiver.position = Vector3(0, 0, 0)
-	model_root.add_child(receiver)
-	
-	# Grip
-	var grip = MeshInstance3D.new()
-	var g_mesh = BoxMesh.new()
-	g_mesh.size = Vector3(0.03, 0.12, 0.04)
-	g_mesh.material = black_mat
-	grip.mesh = g_mesh
-	grip.position = Vector3(0, -0.06, 0.08)
-	grip.rotation.x = deg_to_rad(10)
-	model_root.add_child(grip)
-	
-	# Foregrip
-	var fgrip = MeshInstance3D.new()
-	var fg_mesh = BoxMesh.new()
-	fg_mesh.size = Vector3(0.03, 0.08, 0.03)
-	fg_mesh.material = black_mat
-	fgrip.mesh = fg_mesh
-	fgrip.position = Vector3(0, -0.05, -0.06)
-	fgrip.rotation.x = deg_to_rad(-10)
-	model_root.add_child(fgrip)
-	
-	# Barrel
-	var barrel = MeshInstance3D.new()
-	var b_mesh = CylinderMesh.new()
-	b_mesh.top_radius = 0.008
-	b_mesh.bottom_radius = 0.008
-	b_mesh.height = 0.1
-	b_mesh.material = black_mat
-	barrel.mesh = b_mesh
-	barrel.rotation.x = deg_to_rad(90)
-	barrel.position = Vector3(0, 0.02, -0.15)
-	model_root.add_child(barrel)
-	
+	position = Vector3(0.25, -0.25, -0.35)
+
+	var model_scene = load("res://assets/weapons/mp7/source/HK MP7.fbx")
+	if model_scene:
+		var model = model_scene.instantiate()
+		model_root.add_child(model)
+		model.scale = Vector3(0.08, 0.08, 0.08)
+		model.rotation_degrees.y = 90
+		for light in model.find_children("*", "Light3D", true, false):
+			light.queue_free()
 	# Muzzle Flash
 	muzzle_flash = OmniLight3D.new()
 	muzzle_flash.light_color = Color(1.0, 0.9, 0.5)