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Add units to VehicleWheel3D suspension stiffness and damping

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Aaron Franke 2024-07-28 00:14:57 -07:00
parent 02b16d2f54
commit e3895e0ca2
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2 changed files with 6 additions and 6 deletions
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6
doc/classes/VehicleWheel3D.xml
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@ -54,10 +54,10 @@
Slows down the wheel by applying a braking force. The wheel is only slowed down if it is in contact with a surface. The force you need to apply to adequately slow down your vehicle depends on the [member RigidBody3D.mass] of the vehicle. For a vehicle with a mass set to 1000, try a value in the 25 - 30 range for hard braking.
</member>
<member name="damping_compression" type="float" setter="set_damping_compression" getter="get_damping_compression" default="0.83">
The damping applied to the spring when the spring is being compressed. This value should be between 0.0 (no damping) and 1.0. A value of 0.0 means the car will keep bouncing as the spring keeps its energy. A good value for this is around 0.3 for a normal car, 0.5 for a race car.
The damping applied to the suspension spring when being compressed, meaning when the wheel is moving up relative to the vehicle. It is measured in Newton-seconds per millimeter (N⋅s/mm), or megagrams per second (Mg/s). This value should be between 0.0 (no damping) and 1.0, but may be more. A value of 0.0 means the car will keep bouncing as the spring keeps its energy. A good value for this is around 0.3 for a normal car, 0.5 for a race car.
</member>
<member name="damping_relaxation" type="float" setter="set_damping_relaxation" getter="get_damping_relaxation" default="0.88">
The damping applied to the spring when relaxing. This value should be between 0.0 (no damping) and 1.0. This value should always be slightly higher than the [member damping_compression] property. For a [member damping_compression] value of 0.3, try a relaxation value of 0.5.
The damping applied to the suspension spring when rebounding or extending, meaning when the wheel is moving down relative to the vehicle. It is measured in Newton-seconds per millimeter (N⋅s/mm), or megagrams per second (Mg/s). This value should be between 0.0 (no damping) and 1.0, but may be more. This value should always be slightly higher than the [member damping_compression] property. For a [member damping_compression] value of 0.3, try a relaxation value of 0.5.
</member>
<member name="engine_force" type="float" setter="set_engine_force" getter="get_engine_force" default="0.0">
Accelerates the wheel by applying an engine force. The wheel is only sped up if it is in contact with a surface. The [member RigidBody3D.mass] of the vehicle has an effect on the acceleration of the vehicle. For a vehicle with a mass set to 1000, try a value in the 25 - 50 range for acceleration.
@ -71,7 +71,7 @@
The maximum force the spring can resist. This value should be higher than a quarter of the [member RigidBody3D.mass] of the [VehicleBody3D] or the spring will not carry the weight of the vehicle. Good results are often obtained by a value that is about 3× to 4× this number.
</member>
<member name="suspension_stiffness" type="float" setter="set_suspension_stiffness" getter="get_suspension_stiffness" default="5.88">
This value defines the stiffness of the suspension. Use a value lower than 50 for an off-road car, a value between 50 and 100 for a race car and try something around 200 for something like a Formula 1 car.
The stiffness of the suspension, measured in Newtons per millimeter (N/mm), or megagrams per second squared (Mg/s²). Use a value lower than 50 for an off-road car, a value between 50 and 100 for a race car and try something around 200 for something like a Formula 1 car.
</member>
<member name="suspension_travel" type="float" setter="set_suspension_travel" getter="get_suspension_travel" default="0.2">
This is the distance the suspension can travel. As Godot units are equivalent to meters, keep this setting relatively low. Try a value between 0.1 and 0.3 depending on the type of car.

6
scene/3d/physics/vehicle_body_3d.cpp
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@ -297,11 +297,11 @@ void VehicleWheel3D::_bind_methods() {
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "wheel_friction_slip"), "set_friction_slip", "get_friction_slip");
ADD_GROUP("Suspension", "suspension_");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "suspension_travel", PROPERTY_HINT_NONE, "suffix:m"), "set_suspension_travel", "get_suspension_travel");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "suspension_stiffness"), "set_suspension_stiffness", "get_suspension_stiffness");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "suspension_stiffness", PROPERTY_HINT_NONE, U"suffix:N/mm"), "set_suspension_stiffness", "get_suspension_stiffness");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "suspension_max_force", PROPERTY_HINT_NONE, U"suffix:kg\u22C5m/s\u00B2 (N)"), "set_suspension_max_force", "get_suspension_max_force");
ADD_GROUP("Damping", "damping_");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "damping_compression"), "set_damping_compression", "get_damping_compression");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "damping_relaxation"), "set_damping_relaxation", "get_damping_relaxation");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "damping_compression", PROPERTY_HINT_NONE, U"suffix:N\u22C5s/mm"), "set_damping_compression", "get_damping_compression");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "damping_relaxation", PROPERTY_HINT_NONE, U"suffix:N\u22C5s/mm"), "set_damping_relaxation", "get_damping_relaxation");
}
void VehicleWheel3D::set_engine_force(real_t p_engine_force) {