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created a basic inheritable scene to create 3d vehicles easily adjust…
…ing few parameters
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| ################## STEPS ################## | ||
| # 1. Set the car model mesh and collision shape | ||
| # 2. Adjust the parameters of the vehicles and wheel depending on the type of vehicle | ||
| # 3. Collision shape always needs to be above the wheels for the suspension to apply correctly. | ||
| # 4. Add the wheel meshes as child of the wheel nodes | ||
| # 5. (Optional) Set the node that displays a steering wheel in the exported parameter (first person view mostly) | ||
| ################## END ################## | ||
| class_name CarVehicle3D extends VehicleBody3D | ||
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| const GroupName: StringName = &"vehicles" | ||
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| signal started_engine | ||
| signal stopped_engine | ||
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| ## The acceleration will be applied to the engine force. More acceleration takes less time to achieve max speed | ||
| @export_category("Input") | ||
| var vehicle_acceleration_action: StringName = InputControls.VehicleAccelerate: | ||
| set(new_action): | ||
| if new_action != vehicle_acceleration_action: | ||
| vehicle_acceleration_action = new_action | ||
| _update_input_actions() | ||
| var vehicle_reverse_acceleration_action: StringName = InputControls.VehicleReverseAccelerate: | ||
| set(new_action): | ||
| if new_action != vehicle_reverse_acceleration_action: | ||
| vehicle_reverse_acceleration_action = new_action | ||
| _update_input_actions() | ||
| var vehicle_steer_right_action: StringName = InputControls.VehicleSteerRight: | ||
| set(new_action): | ||
| if new_action != vehicle_steer_right_action: | ||
| vehicle_steer_right_action = new_action | ||
| _update_input_actions() | ||
| var vehicle_steer_left_action: StringName = InputControls.VehicleSteerLeft: | ||
| set(new_action): | ||
| if new_action != vehicle_steer_left_action: | ||
| vehicle_steer_left_action = new_action | ||
| _update_input_actions() | ||
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| @export_category("Engine") | ||
| @export var engine_acceleration: float = 200.0 | ||
| @export var engine_reverse_acceleration: float = 100.0 | ||
| ## The maximum value the wheels can be turned at | ||
| @export var max_rpm: float = 500.0 | ||
| @export_category("Steering") | ||
| ## Decides how much a wheel can be turned. Higher values means that it can turn more easily | ||
| @export var kb_steering_ramp_up_factor: float = 30.0 | ||
| ## The node that displays a steering wheel that can be rotated | ||
| @export var steering_wheel: Node3D | ||
| @export var steering_wheel_maximum_rotation: Vector3 = Vector3.ZERO | ||
| @export var steering_wheel_idle_rotation: Vector3 = Vector3.ZERO | ||
| @export var steering_wheel_lerp_factor: float = 15.0 | ||
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| @onready var front_right_wheel: VehicleWheel3D = %FrontRightWheel | ||
| @onready var front_left_wheel: VehicleWheel3D = %FrontLeftWheel | ||
| @onready var rear_right_wheel: VehicleWheel3D = %RearRightWheel | ||
| @onready var rear_left_wheel: VehicleWheel3D = %RearLeftWheel | ||
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| var motion_input: TransformedInput = TransformedInput.new(self) | ||
| var engine_on: bool = false: | ||
| set(value): | ||
| if value != engine_on: | ||
| engine_on = value | ||
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| if engine_on: | ||
| started_engine.emit() | ||
| else: | ||
| engine_force = 0 | ||
| stopped_engine.emit() | ||
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| func _enter_tree() -> void: | ||
| add_to_group(GroupName) | ||
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| func _ready() -> void: | ||
| _update_input_actions() | ||
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| func _physics_process(delta: float) -> void: | ||
| motion_input.update() | ||
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| var steering_input: float = -motion_input.input_direction_horizontal_axis | ||
| var turn_direction: float = clampf(steering_input * delta * kb_steering_ramp_up_factor, -1.0, 1.0) | ||
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| if steering_wheel: | ||
| var target_steering_wheel_rotation: Vector3 = steering_wheel_maximum_rotation if is_zero_approx(steering_input) else steering_wheel_idle_rotation | ||
| steering_wheel.rotation = steering_wheel.rotation.lerp(target_steering_wheel_rotation, clampf(delta * steering_wheel_lerp_factor, 0.0, 1.0)) | ||
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| steering = lerp(steering, turn_direction, steering_wheel_lerp_factor * delta) | ||
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| if engine_on: | ||
| var engine_acceleration_input: float = -motion_input.input_direction_vertical_axis | ||
| var left_wheel_rpm: float = absf(rear_left_wheel.get_rpm()) | ||
| var right_wheel_rpm: float = absf(rear_right_wheel.get_rpm()) | ||
| var acceleration: float = engine_acceleration_input * (engine_acceleration if sign(engine_acceleration_input) == 1 else engine_reverse_acceleration) | ||
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| rear_left_wheel.engine_force = acceleration * (1.0 - left_wheel_rpm / max_rpm) | ||
| rear_right_wheel.engine_force = acceleration * (1.0 - right_wheel_rpm / max_rpm) | ||
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| func start_engine() -> void: | ||
| engine_on = true | ||
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| func stop_engine() -> void: | ||
| engine_on = false | ||
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| func _update_input_actions() -> void: | ||
| if motion_input == null: | ||
| motion_input = TransformedInput.new(self) | ||
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| motion_input.change_move_right_action(vehicle_steer_right_action)\ | ||
| .change_move_left_action(vehicle_steer_left_action)\ | ||
| .change_move_forward_action(vehicle_acceleration_action)\ | ||
| .change_move_back_action(vehicle_reverse_acceleration_action) |
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| [gd_scene load_steps=7 format=3 uid="uid://ducbsaywlbv5d"] | ||
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| [ext_resource type="Script" path="res://components/motion/3D/vehicle/3D/car/car_vehicle_3d.gd" id="1_irpm2"] | ||
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| [sub_resource type="BoxMesh" id="BoxMesh_iux3t"] | ||
| size = Vector3(2, 0.6, 3) | ||
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| [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_j17m7"] | ||
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| [sub_resource type="ConvexPolygonShape3D" id="ConvexPolygonShape3D_kr34e"] | ||
| points = PackedVector3Array(1, 0.3, 1.5, 1, -0.3, 1.5, 1, 0.3, -1.5, -1, 0.3, 1.5, -1, -0.3, 1.5, 1, -0.3, -1.5, -1, 0.3, -1.5, -1, -0.3, -1.5) | ||
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| [sub_resource type="CylinderMesh" id="CylinderMesh_ccnh7"] | ||
| top_radius = 0.4 | ||
| bottom_radius = 0.4 | ||
| height = 0.2 | ||
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| [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_p8s8i"] | ||
| albedo_color = Color(0.0646965, 0.0646965, 0.0646965, 1) | ||
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| [node name="CarVehicle3d" type="VehicleBody3D"] | ||
| script = ExtResource("1_irpm2") | ||
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| [node name="MeshInstance3D" type="MeshInstance3D" parent="."] | ||
| transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.0778702, 0.245242) | ||
| mesh = SubResource("BoxMesh_iux3t") | ||
| surface_material_override/0 = SubResource("StandardMaterial3D_j17m7") | ||
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| [node name="CollisionShape3D" type="CollisionShape3D" parent="."] | ||
| transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.0778702, 0.245242) | ||
| shape = SubResource("ConvexPolygonShape3D_kr34e") | ||
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| [node name="FrontRightWheel" type="VehicleWheel3D" parent="."] | ||
| unique_name_in_owner = true | ||
| transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -1.2463, 0.0241632, 1.31139) | ||
| use_as_steering = true | ||
| wheel_radius = 0.4 | ||
| suspension_stiffness = 50.0 | ||
| damping_compression = 1.9 | ||
| damping_relaxation = 2.0 | ||
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| [node name="WheelMesh" type="MeshInstance3D" parent="FrontRightWheel"] | ||
| transform = Transform3D(-4.37114e-08, -1, 0, 1, -4.37114e-08, 0, 0, 0, 1, 0, 0, 0) | ||
| mesh = SubResource("CylinderMesh_ccnh7") | ||
| skeleton = NodePath("../..") | ||
| surface_material_override/0 = SubResource("StandardMaterial3D_p8s8i") | ||
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| [node name="FrontLeftWheel" type="VehicleWheel3D" parent="."] | ||
| unique_name_in_owner = true | ||
| transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 1.2084, 0.0241632, 1.31139) | ||
| use_as_steering = true | ||
| wheel_radius = 0.4 | ||
| suspension_stiffness = 50.0 | ||
| damping_compression = 1.9 | ||
| damping_relaxation = 2.0 | ||
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| [node name="WheelMesh2" type="MeshInstance3D" parent="FrontLeftWheel"] | ||
| transform = Transform3D(-4.37114e-08, -1, 0, 1, -4.37114e-08, 0, 0, 0, 1, 0, 0, 0) | ||
| mesh = SubResource("CylinderMesh_ccnh7") | ||
| skeleton = NodePath("../..") | ||
| surface_material_override/0 = SubResource("StandardMaterial3D_p8s8i") | ||
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| [node name="RearRightWheel" type="VehicleWheel3D" parent="."] | ||
| unique_name_in_owner = true | ||
| transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 1.17399, 0.0241632, -0.907925) | ||
| use_as_traction = true | ||
| wheel_radius = 0.4 | ||
| suspension_stiffness = 50.0 | ||
| damping_compression = 1.9 | ||
| damping_relaxation = 2.0 | ||
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| [node name="WheelMesh3" type="MeshInstance3D" parent="RearRightWheel"] | ||
| transform = Transform3D(-4.37114e-08, -1, 0, 1, -4.37114e-08, 0, 0, 0, 1, 0, 0, 0) | ||
| mesh = SubResource("CylinderMesh_ccnh7") | ||
| skeleton = NodePath("../..") | ||
| surface_material_override/0 = SubResource("StandardMaterial3D_p8s8i") | ||
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| [node name="RearLeftWheel" type="VehicleWheel3D" parent="."] | ||
| unique_name_in_owner = true | ||
| transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -1.21122, 0.0241632, -0.840381) | ||
| use_as_traction = true | ||
| wheel_radius = 0.4 | ||
| suspension_stiffness = 50.0 | ||
| damping_compression = 1.9 | ||
| damping_relaxation = 2.0 | ||
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| [node name="WheelMesh4" type="MeshInstance3D" parent="RearLeftWheel"] | ||
| transform = Transform3D(-4.37114e-08, -1, 0, 1, -4.37114e-08, 0, 0, 0, 1, 0, 0, 0) | ||
| mesh = SubResource("CylinderMesh_ccnh7") | ||
| skeleton = NodePath("../..") | ||
| surface_material_override/0 = SubResource("StandardMaterial3D_p8s8i") |