virtualx-engine/modules/godot_physics_3d/godot_area_3d.cpp
Ricardo Buring 0333648cea Move Godot Physics 3D into a module; add dummy 3D physics server
If the module is enabled (default), 3D physics works as it did before.

If the module is disabled and no other 3D physics server is registered
(via a module or GDExtension), then we fall back to a dummy
implementation which effectively disables 3D physics functionality (and
a warning is printed).

The dummy 3D physics server can also be selected explicitly, in which
case no warning is printed.
2024-09-21 21:19:45 +02:00

346 lines
12 KiB
C++

/**************************************************************************/
/* godot_area_3d.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "godot_area_3d.h"
#include "godot_body_3d.h"
#include "godot_soft_body_3d.h"
#include "godot_space_3d.h"
GodotArea3D::BodyKey::BodyKey(GodotSoftBody3D *p_body, uint32_t p_body_shape, uint32_t p_area_shape) {
rid = p_body->get_self();
instance_id = p_body->get_instance_id();
body_shape = p_body_shape;
area_shape = p_area_shape;
}
GodotArea3D::BodyKey::BodyKey(GodotBody3D *p_body, uint32_t p_body_shape, uint32_t p_area_shape) {
rid = p_body->get_self();
instance_id = p_body->get_instance_id();
body_shape = p_body_shape;
area_shape = p_area_shape;
}
GodotArea3D::BodyKey::BodyKey(GodotArea3D *p_body, uint32_t p_body_shape, uint32_t p_area_shape) {
rid = p_body->get_self();
instance_id = p_body->get_instance_id();
body_shape = p_body_shape;
area_shape = p_area_shape;
}
void GodotArea3D::_shapes_changed() {
if (!moved_list.in_list() && get_space()) {
get_space()->area_add_to_moved_list(&moved_list);
}
}
void GodotArea3D::set_transform(const Transform3D &p_transform) {
if (!moved_list.in_list() && get_space()) {
get_space()->area_add_to_moved_list(&moved_list);
}
_set_transform(p_transform);
_set_inv_transform(p_transform.affine_inverse());
}
void GodotArea3D::set_space(GodotSpace3D *p_space) {
if (get_space()) {
if (monitor_query_list.in_list()) {
get_space()->area_remove_from_monitor_query_list(&monitor_query_list);
}
if (moved_list.in_list()) {
get_space()->area_remove_from_moved_list(&moved_list);
}
}
monitored_bodies.clear();
monitored_areas.clear();
_set_space(p_space);
}
void GodotArea3D::set_monitor_callback(const Callable &p_callback) {
_unregister_shapes();
monitor_callback = p_callback;
monitored_bodies.clear();
monitored_areas.clear();
_shape_changed();
if (!moved_list.in_list() && get_space()) {
get_space()->area_add_to_moved_list(&moved_list);
}
}
void GodotArea3D::set_area_monitor_callback(const Callable &p_callback) {
_unregister_shapes();
area_monitor_callback = p_callback;
monitored_bodies.clear();
monitored_areas.clear();
_shape_changed();
if (!moved_list.in_list() && get_space()) {
get_space()->area_add_to_moved_list(&moved_list);
}
}
void GodotArea3D::_set_space_override_mode(PhysicsServer3D::AreaSpaceOverrideMode &r_mode, PhysicsServer3D::AreaSpaceOverrideMode p_new_mode) {
bool do_override = p_new_mode != PhysicsServer3D::AREA_SPACE_OVERRIDE_DISABLED;
if (do_override == (r_mode != PhysicsServer3D::AREA_SPACE_OVERRIDE_DISABLED)) {
return;
}
_unregister_shapes();
r_mode = p_new_mode;
_shape_changed();
}
void GodotArea3D::set_param(PhysicsServer3D::AreaParameter p_param, const Variant &p_value) {
switch (p_param) {
case PhysicsServer3D::AREA_PARAM_GRAVITY_OVERRIDE_MODE:
_set_space_override_mode(gravity_override_mode, (PhysicsServer3D::AreaSpaceOverrideMode)(int)p_value);
break;
case PhysicsServer3D::AREA_PARAM_GRAVITY:
gravity = p_value;
break;
case PhysicsServer3D::AREA_PARAM_GRAVITY_VECTOR:
gravity_vector = p_value;
break;
case PhysicsServer3D::AREA_PARAM_GRAVITY_IS_POINT:
gravity_is_point = p_value;
break;
case PhysicsServer3D::AREA_PARAM_GRAVITY_POINT_UNIT_DISTANCE:
gravity_point_unit_distance = p_value;
break;
case PhysicsServer3D::AREA_PARAM_LINEAR_DAMP_OVERRIDE_MODE:
_set_space_override_mode(linear_damping_override_mode, (PhysicsServer3D::AreaSpaceOverrideMode)(int)p_value);
break;
case PhysicsServer3D::AREA_PARAM_LINEAR_DAMP:
linear_damp = p_value;
break;
case PhysicsServer3D::AREA_PARAM_ANGULAR_DAMP_OVERRIDE_MODE:
_set_space_override_mode(angular_damping_override_mode, (PhysicsServer3D::AreaSpaceOverrideMode)(int)p_value);
break;
case PhysicsServer3D::AREA_PARAM_ANGULAR_DAMP:
angular_damp = p_value;
break;
case PhysicsServer3D::AREA_PARAM_PRIORITY:
priority = p_value;
break;
case PhysicsServer3D::AREA_PARAM_WIND_FORCE_MAGNITUDE:
ERR_FAIL_COND_MSG(wind_force_magnitude < 0, "Wind force magnitude must be a non-negative real number, but a negative number was specified.");
wind_force_magnitude = p_value;
break;
case PhysicsServer3D::AREA_PARAM_WIND_SOURCE:
wind_source = p_value;
break;
case PhysicsServer3D::AREA_PARAM_WIND_DIRECTION:
wind_direction = p_value;
break;
case PhysicsServer3D::AREA_PARAM_WIND_ATTENUATION_FACTOR:
ERR_FAIL_COND_MSG(wind_attenuation_factor < 0, "Wind attenuation factor must be a non-negative real number, but a negative number was specified.");
wind_attenuation_factor = p_value;
break;
}
}
Variant GodotArea3D::get_param(PhysicsServer3D::AreaParameter p_param) const {
switch (p_param) {
case PhysicsServer3D::AREA_PARAM_GRAVITY_OVERRIDE_MODE:
return gravity_override_mode;
case PhysicsServer3D::AREA_PARAM_GRAVITY:
return gravity;
case PhysicsServer3D::AREA_PARAM_GRAVITY_VECTOR:
return gravity_vector;
case PhysicsServer3D::AREA_PARAM_GRAVITY_IS_POINT:
return gravity_is_point;
case PhysicsServer3D::AREA_PARAM_GRAVITY_POINT_UNIT_DISTANCE:
return gravity_point_unit_distance;
case PhysicsServer3D::AREA_PARAM_LINEAR_DAMP_OVERRIDE_MODE:
return linear_damping_override_mode;
case PhysicsServer3D::AREA_PARAM_LINEAR_DAMP:
return linear_damp;
case PhysicsServer3D::AREA_PARAM_ANGULAR_DAMP_OVERRIDE_MODE:
return angular_damping_override_mode;
case PhysicsServer3D::AREA_PARAM_ANGULAR_DAMP:
return angular_damp;
case PhysicsServer3D::AREA_PARAM_PRIORITY:
return priority;
case PhysicsServer3D::AREA_PARAM_WIND_FORCE_MAGNITUDE:
return wind_force_magnitude;
case PhysicsServer3D::AREA_PARAM_WIND_SOURCE:
return wind_source;
case PhysicsServer3D::AREA_PARAM_WIND_DIRECTION:
return wind_direction;
case PhysicsServer3D::AREA_PARAM_WIND_ATTENUATION_FACTOR:
return wind_attenuation_factor;
}
return Variant();
}
void GodotArea3D::_queue_monitor_update() {
ERR_FAIL_NULL(get_space());
if (!monitor_query_list.in_list()) {
get_space()->area_add_to_monitor_query_list(&monitor_query_list);
}
}
void GodotArea3D::set_monitorable(bool p_monitorable) {
if (monitorable == p_monitorable) {
return;
}
monitorable = p_monitorable;
_set_static(!monitorable);
_shapes_changed();
}
void GodotArea3D::call_queries() {
if (!monitor_callback.is_null() && !monitored_bodies.is_empty()) {
if (monitor_callback.is_valid()) {
Variant res[5];
Variant *resptr[5];
for (int i = 0; i < 5; i++) {
resptr[i] = &res[i];
}
for (HashMap<BodyKey, BodyState, BodyKey>::Iterator E = monitored_bodies.begin(); E;) {
if (E->value.state == 0) { // Nothing happened
HashMap<BodyKey, BodyState, BodyKey>::Iterator next = E;
++next;
monitored_bodies.remove(E);
E = next;
continue;
}
res[0] = E->value.state > 0 ? PhysicsServer3D::AREA_BODY_ADDED : PhysicsServer3D::AREA_BODY_REMOVED;
res[1] = E->key.rid;
res[2] = E->key.instance_id;
res[3] = E->key.body_shape;
res[4] = E->key.area_shape;
HashMap<BodyKey, BodyState, BodyKey>::Iterator next = E;
++next;
monitored_bodies.remove(E);
E = next;
Callable::CallError ce;
Variant ret;
monitor_callback.callp((const Variant **)resptr, 5, ret, ce);
if (ce.error != Callable::CallError::CALL_OK) {
ERR_PRINT_ONCE("Error calling monitor callback method " + Variant::get_callable_error_text(monitor_callback, (const Variant **)resptr, 5, ce));
}
}
} else {
monitored_bodies.clear();
monitor_callback = Callable();
}
}
if (!area_monitor_callback.is_null() && !monitored_areas.is_empty()) {
if (area_monitor_callback.is_valid()) {
Variant res[5];
Variant *resptr[5];
for (int i = 0; i < 5; i++) {
resptr[i] = &res[i];
}
for (HashMap<BodyKey, BodyState, BodyKey>::Iterator E = monitored_areas.begin(); E;) {
if (E->value.state == 0) { // Nothing happened
HashMap<BodyKey, BodyState, BodyKey>::Iterator next = E;
++next;
monitored_areas.remove(E);
E = next;
continue;
}
res[0] = E->value.state > 0 ? PhysicsServer3D::AREA_BODY_ADDED : PhysicsServer3D::AREA_BODY_REMOVED;
res[1] = E->key.rid;
res[2] = E->key.instance_id;
res[3] = E->key.body_shape;
res[4] = E->key.area_shape;
HashMap<BodyKey, BodyState, BodyKey>::Iterator next = E;
++next;
monitored_areas.remove(E);
E = next;
Callable::CallError ce;
Variant ret;
area_monitor_callback.callp((const Variant **)resptr, 5, ret, ce);
if (ce.error != Callable::CallError::CALL_OK) {
ERR_PRINT_ONCE("Error calling area monitor callback method " + Variant::get_callable_error_text(area_monitor_callback, (const Variant **)resptr, 5, ce));
}
}
} else {
monitored_areas.clear();
area_monitor_callback = Callable();
}
}
}
void GodotArea3D::compute_gravity(const Vector3 &p_position, Vector3 &r_gravity) const {
if (is_gravity_point()) {
const real_t gr_unit_dist = get_gravity_point_unit_distance();
Vector3 v = get_transform().xform(get_gravity_vector()) - p_position;
if (gr_unit_dist > 0) {
const real_t v_length_sq = v.length_squared();
if (v_length_sq > 0) {
const real_t gravity_strength = get_gravity() * gr_unit_dist * gr_unit_dist / v_length_sq;
r_gravity = v.normalized() * gravity_strength;
} else {
r_gravity = Vector3();
}
} else {
r_gravity = v.normalized() * get_gravity();
}
} else {
r_gravity = get_gravity_vector() * get_gravity();
}
}
GodotArea3D::GodotArea3D() :
GodotCollisionObject3D(TYPE_AREA),
monitor_query_list(this),
moved_list(this) {
_set_static(true); //areas are never active
set_ray_pickable(false);
}
GodotArea3D::~GodotArea3D() {
}