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Add external force to SpringBoneSimulator3D

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Silc Lizard (Tokage) Renew 2025-01-16 18:53:23 +09:00
parent cae3d722a3
commit 4842dc5a81
3 changed files with 21 additions and 1 deletions
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4
doc/classes/SpringBoneSimulator3D.xml
View file

@ -594,6 +594,10 @@
</method>
</methods>
<members>
<member name="external_force" type="Vector3" setter="set_external_force" getter="get_external_force" default="Vector3(0, 0, 0)">
The constant force that always affected bones. It is equal to the result when the parent [Skeleton3D] moves at this speed in the opposite direction.
This is useful for effects such as wind and anti-gravity.
</member>
<member name="setting_count" type="int" setter="set_setting_count" getter="get_setting_count" default="0">
The number of settings.
</member>

14
scene/3d/spring_bone_simulator_3d.cpp
View file

@ -1098,6 +1098,14 @@ LocalVector<ObjectID> SpringBoneSimulator3D::get_valid_collision_instance_ids(in
return settings[p_index]->cached_collisions;
}
void SpringBoneSimulator3D::set_external_force(const Vector3 &p_force) {
external_force = p_force;
}
Vector3 SpringBoneSimulator3D::get_external_force() const {
return external_force;
}
void SpringBoneSimulator3D::_bind_methods() {
// Setting.
ClassDB::bind_method(D_METHOD("set_root_bone_name", "index", "bone_name"), &SpringBoneSimulator3D::set_root_bone_name);
@ -1190,9 +1198,13 @@ void SpringBoneSimulator3D::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_collision_count", "index"), &SpringBoneSimulator3D::get_collision_count);
ClassDB::bind_method(D_METHOD("clear_collisions", "index"), &SpringBoneSimulator3D::clear_collisions);
ClassDB::bind_method(D_METHOD("set_external_force", "force"), &SpringBoneSimulator3D::set_external_force);
ClassDB::bind_method(D_METHOD("get_external_force"), &SpringBoneSimulator3D::get_external_force);
// To process manually.
ClassDB::bind_method(D_METHOD("reset"), &SpringBoneSimulator3D::reset);
ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "external_force", PROPERTY_HINT_RANGE, "-99999,99999,or_greater,or_less,hide_slider,suffix:m/s"), "set_external_force", "get_external_force");
ADD_ARRAY_COUNT("Settings", "setting_count", "set_setting_count", "get_setting_count", "settings/");
BIND_ENUM_CONSTANT(BONE_DIRECTION_PLUS_X);
@ -1580,7 +1592,7 @@ void SpringBoneSimulator3D::_process_joints(double p_delta, Skeleton3D *p_skelet
Transform3D current_world_pose = p_center_transform * current_global_pose;
Quaternion current_rot = current_global_pose.basis.get_rotation_quaternion();
Vector3 current_origin = p_center_transform.xform(current_global_pose.origin);
Vector3 external = p_inverted_center_rotation.xform(p_joints[i]->gravity_direction * p_joints[i]->gravity * p_delta);
Vector3 external = p_inverted_center_rotation.xform((external_force + p_joints[i]->gravity_direction * p_joints[i]->gravity) * p_delta);
// Integration of velocity by verlet.
Vector3 next_tail = verlet->current_tail +

4
scene/3d/spring_bone_simulator_3d.h
View file

@ -141,6 +141,7 @@ public:
protected:
Vector<SpringBone3DSetting *> settings;
Vector3 external_force;
bool _get(const StringName &p_path, Variant &r_ret) const;
bool _set(const StringName &p_path, const Variant &p_value);
@ -268,6 +269,9 @@ public:
LocalVector<ObjectID> get_valid_collision_instance_ids(int p_index);
void set_external_force(const Vector3 &p_force);
Vector3 get_external_force() const;
// Helper.
static Quaternion get_local_pose_rotation(Skeleton3D *p_skeleton, int p_bone, const Quaternion &p_global_pose_rotation);
static Quaternion get_from_to_rotation(const Vector3 &p_from, const Vector3 &p_to, const Quaternion &p_prev_rot);