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ad3a4214c5
We want our spawns to be notified after ready, but we need to notify them in the order they entered tree, so that nested spawners can be used during "ready" (instead of having to await a frame).
317 lines
13 KiB
C++
317 lines
13 KiB
C++
/**************************************************************************/
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/* multiplayer_spawner.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) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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 "multiplayer_spawner.h"
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#include "core/io/marshalls.h"
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#include "scene/main/multiplayer_api.h"
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#include "scene/main/window.h"
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#include "scene/scene_string_names.h"
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#ifdef TOOLS_ENABLED
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/* This is editor only */
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bool MultiplayerSpawner::_set(const StringName &p_name, const Variant &p_value) {
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if (p_name == "_spawnable_scene_count") {
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spawnable_scenes.resize(p_value);
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notify_property_list_changed();
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return true;
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} else {
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String ns = p_name;
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if (ns.begins_with("scenes/")) {
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uint32_t index = ns.get_slicec('/', 1).to_int();
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ERR_FAIL_UNSIGNED_INDEX_V(index, spawnable_scenes.size(), false);
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spawnable_scenes[index].path = p_value;
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return true;
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}
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}
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return false;
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}
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bool MultiplayerSpawner::_get(const StringName &p_name, Variant &r_ret) const {
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if (p_name == "_spawnable_scene_count") {
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r_ret = spawnable_scenes.size();
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return true;
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} else {
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String ns = p_name;
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if (ns.begins_with("scenes/")) {
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uint32_t index = ns.get_slicec('/', 1).to_int();
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ERR_FAIL_UNSIGNED_INDEX_V(index, spawnable_scenes.size(), false);
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r_ret = spawnable_scenes[index].path;
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return true;
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}
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}
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return false;
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}
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void MultiplayerSpawner::_get_property_list(List<PropertyInfo> *p_list) const {
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p_list->push_back(PropertyInfo(Variant::INT, "_spawnable_scene_count", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_ARRAY, "Auto Spawn List,scenes/"));
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List<String> exts;
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ResourceLoader::get_recognized_extensions_for_type("PackedScene", &exts);
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String ext_hint;
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for (const String &E : exts) {
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if (!ext_hint.is_empty()) {
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ext_hint += ",";
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}
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ext_hint += "*." + E;
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}
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for (uint32_t i = 0; i < spawnable_scenes.size(); i++) {
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p_list->push_back(PropertyInfo(Variant::STRING, "scenes/" + itos(i), PROPERTY_HINT_FILE, ext_hint, PROPERTY_USAGE_EDITOR));
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}
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}
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#endif
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PackedStringArray MultiplayerSpawner::get_configuration_warnings() const {
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PackedStringArray warnings = Node::get_configuration_warnings();
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if (spawn_path.is_empty() || !has_node(spawn_path)) {
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warnings.push_back(RTR("A valid NodePath must be set in the \"Spawn Path\" property in order for MultiplayerSpawner to be able to spawn Nodes."));
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}
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return warnings;
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}
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void MultiplayerSpawner::add_spawnable_scene(const String &p_path) {
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SpawnableScene sc;
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sc.path = p_path;
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if (Engine::get_singleton()->is_editor_hint()) {
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ERR_FAIL_COND(!FileAccess::exists(p_path));
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}
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spawnable_scenes.push_back(sc);
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}
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int MultiplayerSpawner::get_spawnable_scene_count() const {
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return spawnable_scenes.size();
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}
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String MultiplayerSpawner::get_spawnable_scene(int p_idx) const {
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ERR_FAIL_INDEX_V(p_idx, (int)spawnable_scenes.size(), "");
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return spawnable_scenes[p_idx].path;
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}
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void MultiplayerSpawner::clear_spawnable_scenes() {
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spawnable_scenes.clear();
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}
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Vector<String> MultiplayerSpawner::_get_spawnable_scenes() const {
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Vector<String> ss;
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ss.resize(spawnable_scenes.size());
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for (int i = 0; i < ss.size(); i++) {
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ss.write[i] = spawnable_scenes[i].path;
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}
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return ss;
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}
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void MultiplayerSpawner::_set_spawnable_scenes(const Vector<String> &p_scenes) {
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clear_spawnable_scenes();
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for (int i = 0; i < p_scenes.size(); i++) {
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add_spawnable_scene(p_scenes[i]);
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}
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}
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void MultiplayerSpawner::_bind_methods() {
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ClassDB::bind_method(D_METHOD("add_spawnable_scene", "path"), &MultiplayerSpawner::add_spawnable_scene);
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ClassDB::bind_method(D_METHOD("get_spawnable_scene_count"), &MultiplayerSpawner::get_spawnable_scene_count);
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ClassDB::bind_method(D_METHOD("get_spawnable_scene", "index"), &MultiplayerSpawner::get_spawnable_scene);
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ClassDB::bind_method(D_METHOD("clear_spawnable_scenes"), &MultiplayerSpawner::clear_spawnable_scenes);
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ClassDB::bind_method(D_METHOD("_get_spawnable_scenes"), &MultiplayerSpawner::_get_spawnable_scenes);
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ClassDB::bind_method(D_METHOD("_set_spawnable_scenes", "scenes"), &MultiplayerSpawner::_set_spawnable_scenes);
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ADD_PROPERTY(PropertyInfo(Variant::PACKED_STRING_ARRAY, "_spawnable_scenes", PROPERTY_HINT_NONE, "", (PROPERTY_USAGE_STORAGE | PROPERTY_USAGE_INTERNAL)), "_set_spawnable_scenes", "_get_spawnable_scenes");
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ClassDB::bind_method(D_METHOD("spawn", "data"), &MultiplayerSpawner::spawn, DEFVAL(Variant()));
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ClassDB::bind_method(D_METHOD("get_spawn_path"), &MultiplayerSpawner::get_spawn_path);
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ClassDB::bind_method(D_METHOD("set_spawn_path", "path"), &MultiplayerSpawner::set_spawn_path);
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ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "spawn_path", PROPERTY_HINT_NONE, ""), "set_spawn_path", "get_spawn_path");
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ClassDB::bind_method(D_METHOD("get_spawn_limit"), &MultiplayerSpawner::get_spawn_limit);
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ClassDB::bind_method(D_METHOD("set_spawn_limit", "limit"), &MultiplayerSpawner::set_spawn_limit);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "spawn_limit", PROPERTY_HINT_RANGE, "0,1024,1,or_greater"), "set_spawn_limit", "get_spawn_limit");
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ClassDB::bind_method(D_METHOD("get_spawn_function"), &MultiplayerSpawner::get_spawn_function);
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ClassDB::bind_method(D_METHOD("set_spawn_function", "spawn_function"), &MultiplayerSpawner::set_spawn_function);
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ADD_PROPERTY(PropertyInfo(Variant::CALLABLE, "spawn_function", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR), "set_spawn_function", "get_spawn_function");
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ADD_SIGNAL(MethodInfo("despawned", PropertyInfo(Variant::OBJECT, "node", PROPERTY_HINT_RESOURCE_TYPE, "Node")));
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ADD_SIGNAL(MethodInfo("spawned", PropertyInfo(Variant::OBJECT, "node", PROPERTY_HINT_RESOURCE_TYPE, "Node")));
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}
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void MultiplayerSpawner::_update_spawn_node() {
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#ifdef TOOLS_ENABLED
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if (Engine::get_singleton()->is_editor_hint()) {
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return;
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}
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#endif
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if (spawn_node.is_valid()) {
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Node *node = Object::cast_to<Node>(ObjectDB::get_instance(spawn_node));
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if (node && node->is_connected("child_entered_tree", callable_mp(this, &MultiplayerSpawner::_node_added))) {
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node->disconnect("child_entered_tree", callable_mp(this, &MultiplayerSpawner::_node_added));
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}
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}
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Node *node = spawn_path.is_empty() && is_inside_tree() ? nullptr : get_node_or_null(spawn_path);
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if (node) {
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spawn_node = node->get_instance_id();
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if (get_spawnable_scene_count()) {
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node->connect("child_entered_tree", callable_mp(this, &MultiplayerSpawner::_node_added));
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}
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} else {
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spawn_node = ObjectID();
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}
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}
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void MultiplayerSpawner::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_POST_ENTER_TREE: {
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_update_spawn_node();
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} break;
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case NOTIFICATION_EXIT_TREE: {
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_update_spawn_node();
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for (const KeyValue<ObjectID, SpawnInfo> &E : tracked_nodes) {
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Node *node = Object::cast_to<Node>(ObjectDB::get_instance(E.key));
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ERR_CONTINUE(!node);
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node->disconnect(SceneStringNames::get_singleton()->tree_exiting, callable_mp(this, &MultiplayerSpawner::_node_exit));
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get_multiplayer()->object_configuration_remove(node, this);
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}
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tracked_nodes.clear();
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} break;
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}
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}
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void MultiplayerSpawner::_node_added(Node *p_node) {
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if (!get_multiplayer()->has_multiplayer_peer() || !is_multiplayer_authority()) {
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return;
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}
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if (tracked_nodes.has(p_node->get_instance_id())) {
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return;
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}
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const Node *parent = get_spawn_node();
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if (!parent || p_node->get_parent() != parent) {
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return;
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}
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int id = find_spawnable_scene_index_from_path(p_node->get_scene_file_path());
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if (id == INVALID_ID) {
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return;
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}
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const String name = p_node->get_name();
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ERR_FAIL_COND_MSG(name.validate_node_name() != name, vformat("Unable to auto-spawn node with reserved name: %s. Make sure to add your replicated scenes via 'add_child(node, true)' to produce valid names.", name));
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_track(p_node, Variant(), id);
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}
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NodePath MultiplayerSpawner::get_spawn_path() const {
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return spawn_path;
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}
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void MultiplayerSpawner::set_spawn_path(const NodePath &p_path) {
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spawn_path = p_path;
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_update_spawn_node();
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}
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void MultiplayerSpawner::_track(Node *p_node, const Variant &p_argument, int p_scene_id) {
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ObjectID oid = p_node->get_instance_id();
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if (!tracked_nodes.has(oid)) {
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tracked_nodes[oid] = SpawnInfo(p_argument.duplicate(true), p_scene_id);
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p_node->connect(SceneStringNames::get_singleton()->tree_exiting, callable_mp(this, &MultiplayerSpawner::_node_exit).bind(p_node->get_instance_id()), CONNECT_ONE_SHOT);
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_spawn_notify(p_node->get_instance_id());
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}
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}
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void MultiplayerSpawner::_spawn_notify(ObjectID p_id) {
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get_multiplayer()->object_configuration_add(ObjectDB::get_instance(p_id), this);
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}
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void MultiplayerSpawner::_node_exit(ObjectID p_id) {
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Node *node = Object::cast_to<Node>(ObjectDB::get_instance(p_id));
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ERR_FAIL_COND(!node);
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if (tracked_nodes.has(p_id)) {
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tracked_nodes.erase(p_id);
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get_multiplayer()->object_configuration_remove(node, this);
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}
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}
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int MultiplayerSpawner::find_spawnable_scene_index_from_path(const String &p_scene) const {
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for (uint32_t i = 0; i < spawnable_scenes.size(); i++) {
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if (spawnable_scenes[i].path == p_scene) {
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return i;
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}
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}
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return INVALID_ID;
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}
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int MultiplayerSpawner::find_spawnable_scene_index_from_object(const ObjectID &p_id) const {
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const SpawnInfo *info = tracked_nodes.getptr(p_id);
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return info ? info->id : INVALID_ID;
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}
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const Variant MultiplayerSpawner::get_spawn_argument(const ObjectID &p_id) const {
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const SpawnInfo *info = tracked_nodes.getptr(p_id);
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return info ? info->args : Variant();
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}
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Node *MultiplayerSpawner::instantiate_scene(int p_id) {
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ERR_FAIL_COND_V_MSG(spawn_limit && spawn_limit <= tracked_nodes.size(), nullptr, "Spawn limit reached!");
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ERR_FAIL_UNSIGNED_INDEX_V((uint32_t)p_id, spawnable_scenes.size(), nullptr);
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SpawnableScene &sc = spawnable_scenes[p_id];
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if (sc.cache.is_null()) {
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sc.cache = ResourceLoader::load(sc.path);
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}
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ERR_FAIL_COND_V_MSG(sc.cache.is_null(), nullptr, "Invalid spawnable scene: " + sc.path);
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return sc.cache->instantiate();
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}
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Node *MultiplayerSpawner::instantiate_custom(const Variant &p_data) {
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ERR_FAIL_COND_V_MSG(spawn_limit && spawn_limit <= tracked_nodes.size(), nullptr, "Spawn limit reached!");
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ERR_FAIL_COND_V_MSG(!spawn_function.is_valid(), nullptr, "Custom spawn requires a valid 'spawn_function'.");
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const Variant *argv[1] = { &p_data };
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Variant ret;
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Callable::CallError ce;
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spawn_function.callp(argv, 1, ret, ce);
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ERR_FAIL_COND_V_MSG(ce.error != Callable::CallError::CALL_OK, nullptr, "Failed to call spawn function.");
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ERR_FAIL_COND_V_MSG(ret.get_type() != Variant::OBJECT, nullptr, "The spawn function must return a Node.");
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return Object::cast_to<Node>(ret.operator Object *());
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}
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Node *MultiplayerSpawner::spawn(const Variant &p_data) {
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ERR_FAIL_COND_V(!is_inside_tree() || !get_multiplayer()->has_multiplayer_peer() || !is_multiplayer_authority(), nullptr);
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ERR_FAIL_COND_V_MSG(spawn_limit && spawn_limit <= tracked_nodes.size(), nullptr, "Spawn limit reached!");
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ERR_FAIL_COND_V_MSG(!spawn_function.is_valid(), nullptr, "Custom spawn requires the 'spawn_function' property to be a valid callable.");
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Node *parent = get_spawn_node();
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ERR_FAIL_COND_V_MSG(!parent, nullptr, "Cannot find spawn node.");
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Node *node = instantiate_custom(p_data);
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ERR_FAIL_COND_V_MSG(!node, nullptr, "The 'spawn_function' callable must return a valid node.");
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_track(node, p_data);
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parent->add_child(node, true);
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return node;
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}
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