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226 lines
6.9 KiB
C++
226 lines
6.9 KiB
C++
/*************************************************************************/
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/* broad_phase_basic.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 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 "broad_phase_basic.h"
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#include "core/list.h"
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#include "core/print_string.h"
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BroadPhaseSW::ID BroadPhaseBasic::create(CollisionObjectSW *p_object, int p_subindex) {
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ERR_FAIL_COND_V(p_object == NULL, 0);
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current++;
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Element e;
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e.owner = p_object;
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e._static = false;
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e.subindex = p_subindex;
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element_map[current] = e;
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return current;
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}
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void BroadPhaseBasic::move(ID p_id, const AABB &p_aabb) {
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Map<ID, Element>::Element *E = element_map.find(p_id);
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ERR_FAIL_COND(!E);
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E->get().aabb = p_aabb;
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}
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void BroadPhaseBasic::set_static(ID p_id, bool p_static) {
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Map<ID, Element>::Element *E = element_map.find(p_id);
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ERR_FAIL_COND(!E);
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E->get()._static = p_static;
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}
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void BroadPhaseBasic::remove(ID p_id) {
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Map<ID, Element>::Element *E = element_map.find(p_id);
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ERR_FAIL_COND(!E);
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List<PairKey> to_erase;
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//unpair must be done immediately on removal to avoid potential invalid pointers
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for (Map<PairKey, void *>::Element *F = pair_map.front(); F; F = F->next()) {
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if (F->key().a == p_id || F->key().b == p_id) {
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if (unpair_callback) {
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Element *elem_A = &element_map[F->key().a];
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Element *elem_B = &element_map[F->key().b];
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unpair_callback(elem_A->owner, elem_A->subindex, elem_B->owner, elem_B->subindex, F->get(), unpair_userdata);
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}
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to_erase.push_back(F->key());
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}
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}
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while (to_erase.size()) {
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pair_map.erase(to_erase.front()->get());
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to_erase.pop_front();
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}
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element_map.erase(E);
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}
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CollisionObjectSW *BroadPhaseBasic::get_object(ID p_id) const {
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const Map<ID, Element>::Element *E = element_map.find(p_id);
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ERR_FAIL_COND_V(!E, NULL);
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return E->get().owner;
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}
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bool BroadPhaseBasic::is_static(ID p_id) const {
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const Map<ID, Element>::Element *E = element_map.find(p_id);
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ERR_FAIL_COND_V(!E, false);
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return E->get()._static;
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}
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int BroadPhaseBasic::get_subindex(ID p_id) const {
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const Map<ID, Element>::Element *E = element_map.find(p_id);
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ERR_FAIL_COND_V(!E, -1);
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return E->get().subindex;
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}
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int BroadPhaseBasic::cull_point(const Vector3 &p_point, CollisionObjectSW **p_results, int p_max_results, int *p_result_indices) {
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int rc = 0;
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for (Map<ID, Element>::Element *E = element_map.front(); E; E = E->next()) {
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const AABB aabb = E->get().aabb;
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if (aabb.has_point(p_point)) {
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p_results[rc] = E->get().owner;
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p_result_indices[rc] = E->get().subindex;
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rc++;
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if (rc >= p_max_results)
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break;
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}
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}
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return rc;
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}
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int BroadPhaseBasic::cull_segment(const Vector3 &p_from, const Vector3 &p_to, CollisionObjectSW **p_results, int p_max_results, int *p_result_indices) {
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int rc = 0;
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for (Map<ID, Element>::Element *E = element_map.front(); E; E = E->next()) {
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const AABB aabb = E->get().aabb;
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if (aabb.intersects_segment(p_from, p_to)) {
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p_results[rc] = E->get().owner;
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p_result_indices[rc] = E->get().subindex;
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rc++;
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if (rc >= p_max_results)
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break;
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}
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}
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return rc;
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}
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int BroadPhaseBasic::cull_aabb(const AABB &p_aabb, CollisionObjectSW **p_results, int p_max_results, int *p_result_indices) {
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int rc = 0;
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for (Map<ID, Element>::Element *E = element_map.front(); E; E = E->next()) {
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const AABB aabb = E->get().aabb;
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if (aabb.intersects(p_aabb)) {
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p_results[rc] = E->get().owner;
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p_result_indices[rc] = E->get().subindex;
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rc++;
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if (rc >= p_max_results)
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break;
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}
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}
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return rc;
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}
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void BroadPhaseBasic::set_pair_callback(PairCallback p_pair_callback, void *p_userdata) {
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pair_userdata = p_userdata;
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pair_callback = p_pair_callback;
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}
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void BroadPhaseBasic::set_unpair_callback(UnpairCallback p_unpair_callback, void *p_userdata) {
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unpair_userdata = p_userdata;
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unpair_callback = p_unpair_callback;
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}
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void BroadPhaseBasic::update() {
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// recompute pairs
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for (Map<ID, Element>::Element *I = element_map.front(); I; I = I->next()) {
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for (Map<ID, Element>::Element *J = I->next(); J; J = J->next()) {
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Element *elem_A = &I->get();
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Element *elem_B = &J->get();
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if (elem_A->owner == elem_B->owner)
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continue;
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bool pair_ok = elem_A->aabb.intersects(elem_B->aabb) && (!elem_A->_static || !elem_B->_static);
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PairKey key(I->key(), J->key());
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Map<PairKey, void *>::Element *E = pair_map.find(key);
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if (!pair_ok && E) {
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if (unpair_callback)
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unpair_callback(elem_A->owner, elem_A->subindex, elem_B->owner, elem_B->subindex, E->get(), unpair_userdata);
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pair_map.erase(key);
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}
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if (pair_ok && !E) {
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void *data = NULL;
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if (pair_callback)
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data = pair_callback(elem_A->owner, elem_A->subindex, elem_B->owner, elem_B->subindex, unpair_userdata);
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pair_map.insert(key, data);
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}
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}
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}
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}
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BroadPhaseSW *BroadPhaseBasic::_create() {
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return memnew(BroadPhaseBasic);
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}
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BroadPhaseBasic::BroadPhaseBasic() {
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current = 1;
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unpair_callback = NULL;
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unpair_userdata = NULL;
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pair_callback = NULL;
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pair_userdata = NULL;
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}
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