fb4871c919
This is a bullet wrapper that allows Godot to use Bullet physics and benefit about all features. Also it support all specific Godot physics functionality like multi shape body, areas, RayShape, etc.. It improve the Joints, Trimesh shape, and add support to soft body even if Godot is not yet ready to it.
285 lines
9.7 KiB
C++
285 lines
9.7 KiB
C++
/*************************************************************************/
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/* area_bullet.cpp */
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/* Author: AndreaCatania */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "area_bullet.h"
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#include "BulletCollision/CollisionDispatch/btGhostObject.h"
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#include "btBulletCollisionCommon.h"
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#include "bullet_types_converter.h"
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#include "bullet_utilities.h"
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#include "collision_object_bullet.h"
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#include "space_bullet.h"
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AreaBullet::AreaBullet()
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: RigidCollisionObjectBullet(CollisionObjectBullet::TYPE_AREA),
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monitorable(true),
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isScratched(false),
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spOv_mode(PhysicsServer::AREA_SPACE_OVERRIDE_DISABLED),
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spOv_gravityPoint(false),
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spOv_gravityPointDistanceScale(0),
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spOv_gravityPointAttenuation(1),
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spOv_gravityVec(0, -1, 0),
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spOv_gravityMag(10),
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spOv_linearDump(0.1),
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spOv_angularDump(1),
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spOv_priority(0) {
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btGhost = bulletnew(btGhostObject);
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btGhost->setCollisionShape(compoundShape);
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setupBulletCollisionObject(btGhost);
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/// Collision objects with a callback still have collision response with dynamic rigid bodies.
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/// In order to use collision objects as trigger, you have to disable the collision response.
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set_collision_enabled(false);
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for (int i = 0; i < 5; ++i)
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call_event_res_ptr[i] = &call_event_res[i];
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}
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AreaBullet::~AreaBullet() {
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remove_all_overlapping_instantly();
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}
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void AreaBullet::dispatch_callbacks() {
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if (!isScratched)
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return;
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isScratched = false;
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// Reverse order because I've to remove EXIT objects
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for (int i = overlappingObjects.size() - 1; 0 <= i; --i) {
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OverlappingObjectData &otherObj = overlappingObjects[i];
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switch (otherObj.state) {
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case OVERLAP_STATE_ENTER:
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otherObj.state = OVERLAP_STATE_INSIDE;
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call_event(otherObj.object, PhysicsServer::AREA_BODY_ADDED);
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otherObj.object->on_enter_area(this);
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break;
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case OVERLAP_STATE_EXIT:
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call_event(otherObj.object, PhysicsServer::AREA_BODY_REMOVED);
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otherObj.object->on_exit_area(this);
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overlappingObjects.remove(i); // Remove after callback
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break;
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}
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}
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}
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void AreaBullet::call_event(CollisionObjectBullet *p_otherObject, PhysicsServer::AreaBodyStatus p_status) {
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InOutEventCallback &event = eventsCallbacks[static_cast<int>(p_otherObject->getType())];
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Object *areaGodoObject = ObjectDB::get_instance(event.event_callback_id);
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if (!areaGodoObject) {
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event.event_callback_id = 0;
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return;
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}
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call_event_res[0] = p_status;
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call_event_res[1] = p_otherObject->get_self(); // Other body
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call_event_res[2] = p_otherObject->get_instance_id(); // instance ID
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call_event_res[3] = 0; // other_body_shape ID
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call_event_res[4] = 0; // self_shape ID
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Variant::CallError outResp;
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areaGodoObject->call(event.event_callback_method, (const Variant **)call_event_res_ptr, 5, outResp);
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}
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void AreaBullet::scratch() {
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if (isScratched)
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return;
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isScratched = true;
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}
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void AreaBullet::remove_all_overlapping_instantly() {
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CollisionObjectBullet *supportObject;
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for (int i = overlappingObjects.size() - 1; 0 <= i; --i) {
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supportObject = overlappingObjects[i].object;
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call_event(supportObject, PhysicsServer::AREA_BODY_REMOVED);
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supportObject->on_exit_area(this);
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}
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overlappingObjects.clear();
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}
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void AreaBullet::remove_overlapping_instantly(CollisionObjectBullet *p_object) {
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CollisionObjectBullet *supportObject;
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for (int i = overlappingObjects.size() - 1; 0 <= i; --i) {
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supportObject = overlappingObjects[i].object;
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if (supportObject == p_object) {
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call_event(supportObject, PhysicsServer::AREA_BODY_REMOVED);
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supportObject->on_exit_area(this);
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overlappingObjects.remove(i);
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break;
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}
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}
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}
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int AreaBullet::find_overlapping_object(CollisionObjectBullet *p_colObj) {
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const int size = overlappingObjects.size();
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for (int i = 0; i < size; ++i) {
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if (overlappingObjects[i].object == p_colObj) {
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return i;
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}
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}
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return -1;
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}
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void AreaBullet::set_monitorable(bool p_monitorable) {
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monitorable = p_monitorable;
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}
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bool AreaBullet::is_monitoring() const {
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return get_godot_object_flags() & GOF_IS_MONITORING_AREA;
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}
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void AreaBullet::reload_body() {
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if (space) {
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space->remove_area(this);
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space->add_area(this);
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}
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}
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void AreaBullet::set_space(SpaceBullet *p_space) {
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// Clear the old space if there is one
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if (space) {
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isScratched = false;
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// Remove this object form the physics world
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space->remove_area(this);
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}
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space = p_space;
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if (space) {
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space->add_area(this);
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}
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}
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void AreaBullet::on_collision_filters_change() {
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if (space) {
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space->reload_collision_filters(this);
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}
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}
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void AreaBullet::add_overlap(CollisionObjectBullet *p_otherObject) {
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scratch();
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overlappingObjects.push_back(OverlappingObjectData(p_otherObject, OVERLAP_STATE_ENTER));
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p_otherObject->notify_new_overlap(this);
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}
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void AreaBullet::put_overlap_as_exit(int p_index) {
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scratch();
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overlappingObjects[p_index].state = OVERLAP_STATE_EXIT;
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}
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void AreaBullet::put_overlap_as_inside(int p_index) {
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// This check is required to be sure this body was inside
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if (OVERLAP_STATE_DIRTY == overlappingObjects[p_index].state) {
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overlappingObjects[p_index].state = OVERLAP_STATE_INSIDE;
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}
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}
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void AreaBullet::set_param(PhysicsServer::AreaParameter p_param, const Variant &p_value) {
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switch (p_param) {
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case PhysicsServer::AREA_PARAM_GRAVITY:
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set_spOv_gravityMag(p_value);
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break;
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case PhysicsServer::AREA_PARAM_GRAVITY_VECTOR:
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set_spOv_gravityVec(p_value);
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break;
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case PhysicsServer::AREA_PARAM_LINEAR_DAMP:
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set_spOv_linearDump(p_value);
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break;
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case PhysicsServer::AREA_PARAM_ANGULAR_DAMP:
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set_spOv_angularDump(p_value);
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break;
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case PhysicsServer::AREA_PARAM_PRIORITY:
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set_spOv_priority(p_value);
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break;
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case PhysicsServer::AREA_PARAM_GRAVITY_IS_POINT:
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set_spOv_gravityPoint(p_value);
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break;
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case PhysicsServer::AREA_PARAM_GRAVITY_DISTANCE_SCALE:
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set_spOv_gravityPointDistanceScale(p_value);
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break;
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case PhysicsServer::AREA_PARAM_GRAVITY_POINT_ATTENUATION:
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set_spOv_gravityPointAttenuation(p_value);
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break;
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default:
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print_line("The Bullet areas dosn't suppot this param: " + itos(p_param));
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}
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}
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Variant AreaBullet::get_param(PhysicsServer::AreaParameter p_param) const {
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switch (p_param) {
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case PhysicsServer::AREA_PARAM_GRAVITY:
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return spOv_gravityMag;
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case PhysicsServer::AREA_PARAM_GRAVITY_VECTOR:
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return spOv_gravityVec;
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case PhysicsServer::AREA_PARAM_LINEAR_DAMP:
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return spOv_linearDump;
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case PhysicsServer::AREA_PARAM_ANGULAR_DAMP:
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return spOv_angularDump;
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case PhysicsServer::AREA_PARAM_PRIORITY:
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return spOv_priority;
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case PhysicsServer::AREA_PARAM_GRAVITY_IS_POINT:
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return spOv_gravityPoint;
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case PhysicsServer::AREA_PARAM_GRAVITY_DISTANCE_SCALE:
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return spOv_gravityPointDistanceScale;
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case PhysicsServer::AREA_PARAM_GRAVITY_POINT_ATTENUATION:
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return spOv_gravityPointAttenuation;
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default:
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print_line("The Bullet areas dosn't suppot this param: " + itos(p_param));
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return Variant();
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}
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}
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void AreaBullet::set_event_callback(Type p_callbackObjectType, ObjectID p_id, const StringName &p_method) {
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InOutEventCallback &ev = eventsCallbacks[static_cast<int>(p_callbackObjectType)];
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ev.event_callback_id = p_id;
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ev.event_callback_method = p_method;
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/// Set if monitoring
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if (eventsCallbacks[0].event_callback_id || eventsCallbacks[1].event_callback_id) {
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set_godot_object_flags(get_godot_object_flags() | GOF_IS_MONITORING_AREA);
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} else {
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set_godot_object_flags(get_godot_object_flags() & (~GOF_IS_MONITORING_AREA));
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}
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}
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bool AreaBullet::has_event_callback(Type p_callbackObjectType) {
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return eventsCallbacks[static_cast<int>(p_callbackObjectType)].event_callback_id;
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}
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void AreaBullet::on_enter_area(AreaBullet *p_area) {
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}
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void AreaBullet::on_exit_area(AreaBullet *p_area) {
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CollisionObjectBullet::on_exit_area(p_area);
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}
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