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limboai/editor/debugger/behavior_tree_view.cpp

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/**
* behavior_tree_view.cpp
* =============================================================================
* Copyright 2021-2023 Serhii Snitsaruk
*
* Use of this source code is governed by an MIT-style
* license that can be found in the LICENSE file or at
* https://opensource.org/licenses/MIT.
* =============================================================================
*/
#ifdef TOOLS_ENABLED
#include "behavior_tree_view.h"
#include "../../bt/tasks/bt_task.h"
#include "../../util/limbo_compat.h"
#include "../../util/limbo_utility.h"
#include "behavior_tree_data.h"
#ifdef LIMBOAI_MODULE
#include "core/math/color.h"
#include "core/math/math_defs.h"
#include "core/object/callable_method_pointer.h"
#include "core/os/time.h"
#include "core/typedefs.h"
#include "editor/editor_scale.h"
#include "editor/editor_settings.h"
#include "scene/resources/style_box.h"
#endif // LIMBOAI_MODULE
#ifdef LIMBOAI_GDEXTENSION
#include <godot_cpp/classes/editor_interface.hpp>
#include <godot_cpp/classes/time.hpp>
#endif // LIMBOAI_GDEXTENSION
inline static uint64_t item_get_task_id(TreeItem *p_item) {
return p_item->get_metadata(0);
}
inline static BTTask::Status item_get_task_status(TreeItem *p_item) {
return VariantCaster<BTTask::Status>::cast(p_item->get_metadata(1));
}
inline static String item_get_task_type(TreeItem *p_item) {
return ((String)p_item->get_metadata(2)).get_slicec('|', 0);
}
inline static String item_get_task_script_path(TreeItem *p_item) {
return ((String)p_item->get_metadata(2)).get_slicec('|', 1);
}
void BehaviorTreeView::_draw_running_status(Object *p_obj, Rect2 p_rect) {
p_rect = p_rect.grow_side(SIDE_LEFT, p_rect.get_position().x);
theme_cache.sbf_running->draw(tree->get_canvas_item(), p_rect);
}
void BehaviorTreeView::_draw_success_status(Object *p_obj, Rect2 p_rect) {
p_rect = p_rect.grow_side(SIDE_LEFT, p_rect.get_position().x);
theme_cache.sbf_success->draw(tree->get_canvas_item(), p_rect);
}
void BehaviorTreeView::_draw_failure_status(Object *p_obj, Rect2 p_rect) {
p_rect = p_rect.grow_side(SIDE_LEFT, p_rect.get_position().x);
theme_cache.sbf_failure->draw(tree->get_canvas_item(), p_rect);
}
void BehaviorTreeView::_item_collapsed(Object *p_obj) {
TreeItem *item = Object::cast_to<TreeItem>(p_obj);
if (!item) {
return;
}
uint64_t id = item_get_task_id(item);
bool collapsed = item->is_collapsed();
if (!collapsed_ids.has(id) && collapsed) {
collapsed_ids.push_back(item_get_task_id(item));
} else if (collapsed_ids.has(id) && !collapsed) {
collapsed_ids.erase(id);
}
}
void BehaviorTreeView::_item_selected() {
TreeItem *item = tree->get_selected();
ERR_FAIL_NULL(item);
emit_signal(LW_NAME(task_selected), item_get_task_type(item), item_get_task_script_path(item));
}
double BehaviorTreeView::_get_editor_scale() const {
if (Engine::get_singleton()->is_editor_hint()) {
return EDSCALE;
} else {
return 1.0;
}
}
inline void _item_set_elapsed_time(TreeItem *p_item, double p_elapsed) {
p_item->set_text(2, rtos(Math::snapped(p_elapsed, 0.01)).pad_decimals(2));
}
void BehaviorTreeView::update_tree(const Ref<BehaviorTreeData> &p_data) {
update_data = p_data;
update_pending = true;
_notification(NOTIFICATION_PROCESS);
}
void BehaviorTreeView::_update_tree(const Ref<BehaviorTreeData> &p_data) {
// Remember selected.
uint64_t selected_id = 0;
if (tree->get_selected()) {
selected_id = item_get_task_id(tree->get_selected());
}
if (last_root_id != 0 && p_data->tasks.size() > 0 && last_root_id == (uint64_t)p_data->tasks[0].id) {
// * Update tree.
// ! Update routine is built on assumption that the behavior tree does NOT mutate. With little work it could detect mutations.
TreeItem *item = tree->get_root();
int idx = 0;
while (item) {
ERR_FAIL_COND(idx >= p_data->tasks.size());
const BTTask::Status current_status = (BTTask::Status)p_data->tasks[idx].status;
const BTTask::Status last_status = item_get_task_status(item);
const bool status_changed = last_status != p_data->tasks[idx].status;
if (status_changed) {
item->set_metadata(1, current_status);
if (current_status == BTTask::SUCCESS) {
item->set_custom_draw(0, this, LW_NAME(_draw_success_status));
item->set_icon(1, theme_cache.icon_success);
} else if (current_status == BTTask::FAILURE) {
item->set_custom_draw(0, this, LW_NAME(_draw_failure_status));
item->set_icon(1, theme_cache.icon_failure);
} else if (current_status == BTTask::RUNNING) {
item->set_custom_draw(0, this, LW_NAME(_draw_running_status));
item->set_icon(1, theme_cache.icon_running);
} else {
item->set_custom_draw(0, this, LW_NAME(_draw_fresh));
item->set_icon(1, nullptr);
}
}
if (status_changed || current_status == BTTask::RUNNING) {
_item_set_elapsed_time(item, p_data->tasks[idx].elapsed_time);
}
if (item->get_first_child()) {
item = item->get_first_child();
} else if (item->get_next()) {
item = item->get_next();
} else {
while (item) {
item = item->get_parent();
if (item && item->get_next()) {
item = item->get_next();
break;
}
}
}
idx += 1;
}
ERR_FAIL_COND(idx != p_data->tasks.size());
} else {
// * Create new tree.
last_root_id = p_data->tasks.size() > 0 ? p_data->tasks[0].id : 0;
tree->clear();
TreeItem *parent = nullptr;
List<Pair<TreeItem *, int>> parents;
for (const BehaviorTreeData::TaskData &task_data : p_data->tasks) {
// Figure out parent.
parent = nullptr;
if (parents.size()) {
Pair<TreeItem *, int> &p = parents[0];
parent = p.first;
if (!(--p.second)) {
// No children left, remove it.
parents.pop_front();
}
}
TreeItem *item = tree->create_item(parent);
// Do this first because it resets properties of the cell...
item->set_cell_mode(0, TreeItem::CELL_MODE_CUSTOM);
item->set_cell_mode(1, TreeItem::CELL_MODE_ICON);
item->set_metadata(0, task_data.id);
item->set_metadata(1, task_data.status);
item->set_metadata(2, task_data.type_name + String("|") + task_data.script_path);
item->set_text(0, task_data.name);
if (task_data.is_custom_name) {
item->set_custom_font(0, theme_cache.font_custom_name);
}
item->set_text_alignment(2, HORIZONTAL_ALIGNMENT_RIGHT);
_item_set_elapsed_time(item, task_data.elapsed_time);
String cors = (task_data.script_path.is_empty()) ? task_data.type_name : task_data.script_path;
item->set_icon(0, LimboUtility::get_singleton()->get_task_icon(cors));
item->set_icon_max_width(0, 16 * _get_editor_scale()); // Force user icon size.
if (task_data.status == BTTask::SUCCESS) {
item->set_custom_draw(0, this, LW_NAME(_draw_success_status));
item->set_icon(1, theme_cache.icon_success);
} else if (task_data.status == BTTask::FAILURE) {
item->set_custom_draw(0, this, LW_NAME(_draw_failure_status));
item->set_icon(1, theme_cache.icon_failure);
} else if (task_data.status == BTTask::RUNNING) {
item->set_custom_draw(0, this, LW_NAME(_draw_running_status));
item->set_icon(1, theme_cache.icon_running);
}
if (task_data.id == selected_id) {
tree->set_selected(item, 0);
}
if (collapsed_ids.has(task_data.id)) {
item->set_collapsed(true);
}
// Add in front of parents stack if children are expected.
if (task_data.num_children) {
parents.push_front(Pair<TreeItem *, int>(item, task_data.num_children));
}
}
}
}
void BehaviorTreeView::clear() {
tree->clear();
collapsed_ids.clear();
last_root_id = 0;
}
void BehaviorTreeView::_do_update_theme_item_cache() {
theme_cache.icon_running = LimboUtility::get_singleton()->get_task_icon("LimboExtraClock");
theme_cache.icon_success = LimboUtility::get_singleton()->get_task_icon("BTAlwaysSucceed");
theme_cache.icon_failure = LimboUtility::get_singleton()->get_task_icon("BTAlwaysFail");
theme_cache.font_custom_name = get_theme_font(LW_NAME(bold), LW_NAME(EditorFonts));
Color running_border = Color::html("#fea900");
Color running_fill = Color(running_border, 0.1);
Color success_border = Color::html("#2fa139");
Color success_fill = Color(success_border, 0.1);
Color failure_border = Color::html("#cd3838");
Color failure_fill = Color(failure_border, 0.1);
theme_cache.sbf_running.instantiate();
theme_cache.sbf_running->set_border_color(running_border);
theme_cache.sbf_running->set_bg_color(running_fill);
theme_cache.sbf_running->set_border_width(SIDE_LEFT, 4.0);
theme_cache.sbf_running->set_border_width(SIDE_RIGHT, 4.0);
theme_cache.sbf_success.instantiate();
theme_cache.sbf_success->set_border_color(success_border);
theme_cache.sbf_success->set_bg_color(success_fill);
theme_cache.sbf_success->set_border_width(SIDE_LEFT, 4.0);
theme_cache.sbf_success->set_border_width(SIDE_RIGHT, 4.0);
theme_cache.sbf_failure.instantiate();
theme_cache.sbf_failure->set_border_color(failure_border);
theme_cache.sbf_failure->set_bg_color(failure_fill);
theme_cache.sbf_failure->set_border_width(SIDE_LEFT, 4.0);
theme_cache.sbf_failure->set_border_width(SIDE_RIGHT, 4.0);
double extra_spacing = 0.0;
if (Engine::get_singleton()->is_editor_hint()) {
extra_spacing = EDITOR_GET("interface/theme/additional_spacing");
extra_spacing *= 2.0;
}
tree->set_column_clip_content(0, true);
tree->set_column_custom_minimum_width(1, 18 * _get_editor_scale());
Ref<Font> font = tree->get_theme_font(LW_NAME(font));
int font_size = tree->get_theme_font_size(LW_NAME(font_size));
int timings_size = font->get_string_size("00.00", HORIZONTAL_ALIGNMENT_RIGHT, -1, font_size).x + 16 + extra_spacing;
tree->set_column_custom_minimum_width(2, timings_size * _get_editor_scale());
}
void BehaviorTreeView::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_READY: {
tree->connect(LW_NAME(item_collapsed), callable_mp(this, &BehaviorTreeView::_item_collapsed));
tree->connect(LW_NAME(item_selected), callable_mp(this, &BehaviorTreeView::_item_selected));
} break;
case NOTIFICATION_LAYOUT_DIRECTION_CHANGED:
case NOTIFICATION_TRANSLATION_CHANGED:
case NOTIFICATION_THEME_CHANGED: {
_do_update_theme_item_cache();
} break;
case NOTIFICATION_VISIBILITY_CHANGED: {
set_process(is_visible_in_tree());
} break;
case NOTIFICATION_PROCESS: {
int ticks_msec = Time::get_singleton()->get_ticks_msec();
if (update_pending && (ticks_msec - last_update_msec) >= update_interval_msec) {
_update_tree(update_data);
update_pending = false;
last_update_msec = ticks_msec;
}
} break;
}
}
void BehaviorTreeView::_bind_methods() {
ClassDB::bind_method(D_METHOD("_draw_running_status"), &BehaviorTreeView::_draw_running_status);
ClassDB::bind_method(D_METHOD("_draw_success_status"), &BehaviorTreeView::_draw_success_status);
ClassDB::bind_method(D_METHOD("_draw_failure_status"), &BehaviorTreeView::_draw_failure_status);
ClassDB::bind_method(D_METHOD("_item_collapsed"), &BehaviorTreeView::_item_collapsed);
ClassDB::bind_method(D_METHOD("update_tree", "behavior_tree_data"), &BehaviorTreeView::update_tree);
ClassDB::bind_method(D_METHOD("set_update_interval_msec", "interval_msec"), &BehaviorTreeView::set_update_interval_msec);
ClassDB::bind_method(D_METHOD("get_update_interval_msec"), &BehaviorTreeView::get_update_interval_msec);
ADD_PROPERTY(PropertyInfo(Variant::INT, "update_interval_msec"), "set_update_interval_msec", "get_update_interval_msec");
ADD_SIGNAL(MethodInfo("task_selected", PropertyInfo(Variant::STRING, "type_name"), PropertyInfo(Variant::STRING, "script_path")));
}
BehaviorTreeView::BehaviorTreeView() {
tree = memnew(Tree);
add_child(tree);
tree->set_columns(3); // task | status icon | elapsed
tree->set_column_expand(0, true);
tree->set_column_expand(1, false);
tree->set_column_expand(2, false);
tree->set_anchor(SIDE_RIGHT, ANCHOR_END);
tree->set_anchor(SIDE_BOTTOM, ANCHOR_END);
}
#endif // TOOLS_ENABLED
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