398 lines
13 KiB
C++
398 lines
13 KiB
C++
/**
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* task_tree.cpp
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* =============================================================================
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* Copyright 2021-2023 Serhii Snitsaruk
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*
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* Use of this source code is governed by an MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT.
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* =============================================================================
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*/
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#include "task_tree.h"
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#include "modules/limboai/bt/tasks/bt_comment.h"
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#include "modules/limboai/bt/tasks/composites/bt_probability_selector.h"
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#include "modules/limboai/util/limbo_utility.h"
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#include "editor/editor_scale.h"
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//**** TaskTree
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TreeItem *TaskTree::_create_tree(const Ref<BTTask> &p_task, TreeItem *p_parent, int p_idx) {
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ERR_FAIL_COND_V(p_task.is_null(), nullptr);
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TreeItem *item = tree->create_item(p_parent, p_idx);
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item->set_metadata(0, p_task);
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// p_task->connect("changed"...)
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for (int i = 0; i < p_task->get_child_count(); i++) {
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_create_tree(p_task->get_child(i), item);
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}
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_update_item(item);
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return item;
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}
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void TaskTree::_update_item(TreeItem *p_item) {
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if (p_item == nullptr) {
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return;
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}
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if (p_item->get_parent()) {
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Ref<BTProbabilitySelector> sel = p_item->get_parent()->get_metadata(0);
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if (sel.is_valid()) {
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p_item->set_custom_draw(0, this, SNAME("_draw_probability"));
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p_item->set_cell_mode(0, TreeItem::CELL_MODE_CUSTOM);
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}
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}
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Ref<BTTask> task = p_item->get_metadata(0);
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ERR_FAIL_COND_MSG(!task.is_valid(), "Invalid task reference in metadata.");
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p_item->set_text(0, task->get_task_name());
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if (task->is_class_ptr(BTComment::get_class_ptr_static())) {
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p_item->set_custom_font(0, theme_cache.comment_font);
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p_item->set_custom_color(0, theme_cache.comment_color);
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} else if (task->get_custom_name().is_empty()) {
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p_item->set_custom_font(0, theme_cache.normal_name_font);
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p_item->clear_custom_color(0);
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} else {
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p_item->set_custom_font(0, theme_cache.custom_name_font);
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// p_item->set_custom_color(0, get_theme_color(SNAME("warning_color"), SNAME("Editor")));
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}
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String type_arg;
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if (task->get_script_instance() && !task->get_script_instance()->get_script()->get_path().is_empty()) {
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type_arg = task->get_script_instance()->get_script()->get_path();
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} else {
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type_arg = task->get_class();
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}
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p_item->set_icon(0, LimboUtility::get_singleton()->get_task_icon(type_arg));
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p_item->set_icon_max_width(0, 16 * EDSCALE);
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p_item->set_editable(0, false);
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for (int i = 0; i < p_item->get_button_count(0); i++) {
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p_item->erase_button(0, i);
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}
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PackedStringArray warnings = task->get_configuration_warnings();
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String warning_text;
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for (int j = 0; j < warnings.size(); j++) {
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if (j > 0) {
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warning_text += "\n";
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}
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warning_text += warnings[j];
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}
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if (!warning_text.is_empty()) {
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p_item->add_button(0, theme_cache.task_warning_icon, 0, false, warning_text);
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}
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}
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void TaskTree::_update_tree() {
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Ref<BTTask> sel;
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if (tree->get_selected()) {
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sel = tree->get_selected()->get_metadata(0);
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}
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tree->clear();
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if (bt.is_null()) {
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return;
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}
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if (bt->get_root_task().is_valid()) {
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_create_tree(bt->get_root_task(), nullptr);
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}
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TreeItem *item = _find_item(sel);
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if (item) {
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item->select(0);
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}
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}
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TreeItem *TaskTree::_find_item(const Ref<BTTask> &p_task) const {
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if (p_task.is_null()) {
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return nullptr;
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}
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TreeItem *item = tree->get_root();
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List<TreeItem *> stack;
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while (item && item->get_metadata(0) != p_task) {
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if (item->get_child_count() > 0) {
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stack.push_back(item->get_first_child());
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}
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item = item->get_next();
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if (item == nullptr && !stack.is_empty()) {
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item = stack.front()->get();
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stack.pop_front();
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}
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}
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return item;
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}
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void TaskTree::_on_item_mouse_selected(const Vector2 &p_pos, MouseButton p_button_index) {
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if (p_button_index == MouseButton::LEFT) {
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Rect2 rect = get_selected_probability_rect();
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if (rect != Rect2() && rect.has_point(p_pos)) {
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emit_signal(SNAME("probability_clicked"));
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}
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} else if (p_button_index == MouseButton::RIGHT) {
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emit_signal(SNAME("rmb_pressed"), get_screen_position() + p_pos);
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}
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}
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void TaskTree::_on_item_selected() {
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Callable on_task_changed = callable_mp(this, &TaskTree::_on_task_changed);
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if (last_selected.is_valid()) {
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update_task(last_selected);
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if (last_selected->is_connected(SNAME("changed"), on_task_changed)) {
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last_selected->disconnect(SNAME("changed"), on_task_changed);
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}
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}
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last_selected = get_selected();
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last_selected->connect(SNAME("changed"), on_task_changed);
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emit_signal(SNAME("task_selected"), last_selected);
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}
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void TaskTree::_on_item_activated() {
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emit_signal(SNAME("task_activated"));
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}
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void TaskTree::_on_task_changed() {
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_update_item(tree->get_selected());
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}
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void TaskTree::load_bt(const Ref<BehaviorTree> &p_behavior_tree) {
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ERR_FAIL_COND_MSG(p_behavior_tree.is_null(), "Tried to load a null tree.");
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Callable on_task_changed = callable_mp(this, &TaskTree::_on_task_changed);
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if (last_selected.is_valid() && last_selected->is_connected("changed", on_task_changed)) {
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last_selected->disconnect("changed", on_task_changed);
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}
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bt = p_behavior_tree;
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tree->clear();
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probability_rect_cache.clear();
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if (bt->get_root_task().is_valid()) {
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_create_tree(bt->get_root_task(), nullptr);
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}
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}
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void TaskTree::unload() {
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Callable on_task_changed = callable_mp(this, &TaskTree::_on_task_changed);
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if (last_selected.is_valid() && last_selected->is_connected("changed", on_task_changed)) {
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last_selected->disconnect("changed", on_task_changed);
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}
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bt->unreference();
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tree->clear();
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}
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void TaskTree::update_task(const Ref<BTTask> &p_task) {
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ERR_FAIL_COND(p_task.is_null());
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TreeItem *item = _find_item(p_task);
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if (item) {
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_update_item(item);
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}
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}
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Ref<BTTask> TaskTree::get_selected() const {
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if (tree->get_selected()) {
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return tree->get_selected()->get_metadata(0);
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}
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return nullptr;
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}
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void TaskTree::deselect() {
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TreeItem *sel = tree->get_selected();
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if (sel) {
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sel->deselect(0);
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}
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}
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Rect2 TaskTree::get_selected_probability_rect() const {
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if (tree->get_selected() == nullptr) {
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return Rect2();
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}
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ObjectID key = tree->get_selected()->get_instance_id();
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if (unlikely(!probability_rect_cache.has(key))) {
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return Rect2();
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} else {
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return probability_rect_cache[key];
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}
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}
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double TaskTree::get_selected_probability_weight() const {
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Ref<BTTask> selected = get_selected();
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ERR_FAIL_COND_V(selected.is_null(), 0.0);
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Ref<BTProbabilitySelector> probability_selector = selected->get_parent();
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ERR_FAIL_COND_V(probability_selector.is_null(), 0.0);
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return probability_selector->get_weight(probability_selector->get_child_index(selected));
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}
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bool TaskTree::selected_has_probability() const {
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bool result = false;
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Ref<BTTask> selected = get_selected();
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if (selected.is_valid()) {
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Ref<BTProbabilitySelector> probability_selector = selected->get_parent();
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result = probability_selector.is_valid();
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}
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return result;
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}
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Variant TaskTree::_get_drag_data_fw(const Point2 &p_point) {
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if (editable && tree->get_item_at_position(p_point)) {
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Dictionary drag_data;
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drag_data["type"] = "task";
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drag_data["task"] = tree->get_item_at_position(p_point)->get_metadata(0);
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tree->set_drop_mode_flags(Tree::DROP_MODE_INBETWEEN | Tree::DROP_MODE_ON_ITEM);
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return drag_data;
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}
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return Variant();
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}
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bool TaskTree::_can_drop_data_fw(const Point2 &p_point, const Variant &p_data) const {
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if (!editable) {
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return false;
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}
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Dictionary d = p_data;
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if (!d.has("type") || !d.has("task")) {
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return false;
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}
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int section = tree->get_drop_section_at_position(p_point);
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TreeItem *item = tree->get_item_at_position(p_point);
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if (!item || section < -1) {
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return false;
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}
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if (!item->get_parent() && section != 0) { // before/after root item
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return false;
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}
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if (String(d["type"]) == "task") {
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Ref<BTTask> task = d["task"];
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const Ref<BTTask> to_task = item->get_metadata(0);
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if (task != to_task && !to_task->is_descendant_of(task)) {
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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 TaskTree::_drop_data_fw(const Point2 &p_point, const Variant &p_data) {
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Dictionary d = p_data;
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TreeItem *item = tree->get_item_at_position(p_point);
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if (item && d.has("task")) {
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Ref<BTTask> task = d["task"];
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emit_signal(SNAME("task_dragged"), task, item->get_metadata(0), tree->get_drop_section_at_position(p_point));
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}
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}
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void TaskTree::_draw_probability(Object *item_obj, Rect2 rect) {
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TreeItem *item = Object::cast_to<TreeItem>(item_obj);
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if (!item) {
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return;
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}
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Ref<BTProbabilitySelector> sel = item->get_parent()->get_metadata(0);
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if (sel.is_null()) {
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return;
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}
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String text = rtos(Math::snapped(sel->get_probability(item->get_index()) * 100, 0.01)) + "%";
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Size2 text_size = theme_cache.probability_font->get_string_size(text, HORIZONTAL_ALIGNMENT_LEFT, -1, theme_cache.probability_font_size);
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Rect2 prob_rect = rect;
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prob_rect.position.x += theme_cache.name_font->get_string_size(item->get_text(0), HORIZONTAL_ALIGNMENT_LEFT, -1, theme_cache.name_font_size).x;
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prob_rect.position.x += EDSCALE * 40.0;
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prob_rect.size.x = text_size.x + EDSCALE * 12;
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prob_rect.position.y += 4 * EDSCALE;
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prob_rect.size.y -= 8 * EDSCALE;
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probability_rect_cache[item->get_instance_id()] = prob_rect; // Cache rect for later click detection.
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theme_cache.probability_bg->draw(tree->get_canvas_item(), prob_rect);
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Point2 text_pos = prob_rect.position;
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text_pos.y += text_size.y + (prob_rect.size.y - text_size.y) * 0.5;
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text_pos.y -= theme_cache.probability_font->get_descent(theme_cache.probability_font_size);
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text_pos.y = Math::floor(text_pos.y);
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tree->draw_string(theme_cache.probability_font, text_pos, text, HORIZONTAL_ALIGNMENT_CENTER,
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prob_rect.size.x, theme_cache.probability_font_size, theme_cache.probability_font_color);
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}
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void TaskTree::_update_theme_item_cache() {
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Control::_update_theme_item_cache();
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theme_cache.name_font = get_theme_font(SNAME("font"));
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theme_cache.custom_name_font = get_theme_font(SNAME("bold"), SNAME("EditorFonts"));
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theme_cache.comment_font = get_theme_font(SNAME("doc_italic"), SNAME("EditorFonts"));
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theme_cache.probability_font = get_theme_font(SNAME("font"));
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theme_cache.name_font_size = get_theme_font_size("font_size");
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theme_cache.probability_font_size = Math::floor(get_theme_font_size("font_size") * 0.9);
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theme_cache.task_warning_icon = get_theme_icon(SNAME("NodeWarning"), SNAME("EditorIcons"));
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theme_cache.comment_color = get_theme_color(SNAME("disabled_font_color"), SNAME("Editor"));
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theme_cache.probability_font_color = get_theme_color(SNAME("font_color"), SNAME("Editor"));
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theme_cache.probability_bg.instantiate();
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theme_cache.probability_bg->set_bg_color(get_theme_color(SNAME("accent_color"), SNAME("Editor")) * Color(1, 1, 1, 0.25));
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theme_cache.probability_bg->set_corner_radius_all(12.0 * EDSCALE);
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}
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void TaskTree::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_THEME_CHANGED: {
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_update_tree();
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} break;
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}
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}
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void TaskTree::_bind_methods() {
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ClassDB::bind_method(D_METHOD("load_bt", "p_behavior_tree"), &TaskTree::load_bt);
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ClassDB::bind_method(D_METHOD("get_bt"), &TaskTree::get_bt);
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ClassDB::bind_method(D_METHOD("update_tree"), &TaskTree::update_tree);
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ClassDB::bind_method(D_METHOD("update_task", "p_task"), &TaskTree::update_task);
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ClassDB::bind_method(D_METHOD("get_selected"), &TaskTree::get_selected);
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ClassDB::bind_method(D_METHOD("deselect"), &TaskTree::deselect);
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ClassDB::bind_method(D_METHOD("_get_drag_data_fw"), &TaskTree::_get_drag_data_fw);
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ClassDB::bind_method(D_METHOD("_can_drop_data_fw"), &TaskTree::_can_drop_data_fw);
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ClassDB::bind_method(D_METHOD("_drop_data_fw"), &TaskTree::_drop_data_fw);
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ClassDB::bind_method(D_METHOD("_draw_probability"), &TaskTree::_draw_probability);
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ADD_SIGNAL(MethodInfo("rmb_pressed"));
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ADD_SIGNAL(MethodInfo("task_selected"));
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ADD_SIGNAL(MethodInfo("task_activated"));
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ADD_SIGNAL(MethodInfo("probability_clicked"));
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ADD_SIGNAL(MethodInfo("task_dragged",
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PropertyInfo(Variant::OBJECT, "p_task", PROPERTY_HINT_RESOURCE_TYPE, "BTTask"),
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PropertyInfo(Variant::OBJECT, "p_to_task", PROPERTY_HINT_RESOURCE_TYPE, "BTTask"),
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PropertyInfo(Variant::INT, "p_type")));
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}
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TaskTree::TaskTree() {
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editable = true;
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tree = memnew(Tree);
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add_child(tree);
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tree->set_columns(2);
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tree->set_column_expand(0, true);
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tree->set_column_expand(1, false);
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tree->set_column_custom_minimum_width(1, 64);
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tree->set_anchor(SIDE_RIGHT, ANCHOR_END);
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tree->set_anchor(SIDE_BOTTOM, ANCHOR_END);
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tree->set_allow_rmb_select(true);
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tree->connect("item_mouse_selected", callable_mp(this, &TaskTree::_on_item_mouse_selected));
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tree->connect("item_selected", callable_mp(this, &TaskTree::_on_item_selected));
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tree->connect("item_activated", callable_mp(this, &TaskTree::_on_item_activated));
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tree->set_drag_forwarding(callable_mp(this, &TaskTree::_get_drag_data_fw), callable_mp(this, &TaskTree::_can_drop_data_fw), callable_mp(this, &TaskTree::_drop_data_fw));
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}
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TaskTree::~TaskTree() {
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Callable on_task_changed = callable_mp(this, &TaskTree::_on_task_changed);
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if (last_selected.is_valid() && last_selected->is_connected("changed", on_task_changed)) {
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last_selected->disconnect("changed", on_task_changed);
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}
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}
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