limboai/bt/bt_player.cpp

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/* bt_player.cpp */
#include "bt_player.h"
#include "../limbo_string_names.h"
#include "bt_task.h"
#include "core/config/engine.h"
#include "core/io/resource_loader.h"
#include "core/object/class_db.h"
#include "core/object/object.h"
#include "core/os/memory.h"
#include "core/variant/variant.h"
#include "modules/limboai/blackboard.h"
VARIANT_ENUM_CAST(BTPlayer::UpdateMode);
void BTPlayer::_load_tree() {
_loaded_tree.unref();
_root_task.unref();
ERR_FAIL_COND_MSG(!behavior_tree.is_valid(), "BTPlayer needs a valid behavior tree.");
ERR_FAIL_COND_MSG(!behavior_tree->get_root_task().is_valid(), "Behavior tree has no valid root task.");
_loaded_tree = behavior_tree;
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if (prefetch_nodepath_vars == true) {
// blackboard->prefetch_nodepath_vars(get_owner());
blackboard->prefetch_nodepath_vars(this);
}
_root_task = _loaded_tree->instantiate(get_owner(), blackboard);
}
void BTPlayer::set_behavior_tree(const Ref<BehaviorTree> &p_tree) {
behavior_tree = p_tree;
if (Engine::get_singleton()->is_editor_hint() == false && get_owner()) {
_load_tree();
set_update_mode(update_mode);
}
}
void BTPlayer::set_update_mode(UpdateMode p_mode) {
update_mode = p_mode;
set_active(active);
}
void BTPlayer::set_active(bool p_active) {
active = p_active;
if (!Engine::get_singleton()->is_editor_hint()) {
set_process(update_mode == UpdateMode::IDLE);
set_physics_process(update_mode == UpdateMode::PHYSICS);
}
}
void BTPlayer::update(float p_delta) {
if (!_root_task.is_valid()) {
ERR_PRINT_ONCE(vformat("BTPlayer has no root task to update (owner: %s)", get_owner()));
return;
}
if (active) {
int status = _root_task->execute(p_delta);
if (status == BTTask::SUCCESS || status == BTTask::FAILURE) {
set_active(auto_restart);
emit_signal(LimboStringNames::get_singleton()->behavior_tree_finished, status);
}
}
}
void BTPlayer::restart() {
_root_task->cancel();
set_active(true);
}
void BTPlayer::_notification(int p_notification) {
switch (p_notification) {
case NOTIFICATION_PROCESS: {
if (active) {
Variant time = get_process_delta_time();
update(time);
}
} break;
case NOTIFICATION_PHYSICS_PROCESS: {
if (active) {
Variant time = get_process_delta_time();
update(time);
}
} break;
case NOTIFICATION_READY: {
if (!Engine::get_singleton()->is_editor_hint()) {
if (behavior_tree.is_valid()) {
_load_tree();
}
set_active(active);
}
} break;
}
}
void BTPlayer::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_behavior_tree", "p_path"), &BTPlayer::set_behavior_tree);
ClassDB::bind_method(D_METHOD("get_behavior_tree"), &BTPlayer::get_behavior_tree);
ClassDB::bind_method(D_METHOD("set_update_mode", "p_mode"), &BTPlayer::set_update_mode);
ClassDB::bind_method(D_METHOD("get_update_mode"), &BTPlayer::get_update_mode);
ClassDB::bind_method(D_METHOD("set_active", "p_active"), &BTPlayer::set_active);
ClassDB::bind_method(D_METHOD("get_active"), &BTPlayer::get_active);
ClassDB::bind_method(D_METHOD("set_auto_restart", "p_value"), &BTPlayer::set_auto_restart);
ClassDB::bind_method(D_METHOD("get_auto_restart"), &BTPlayer::get_auto_restart);
ClassDB::bind_method(D_METHOD("set_blackboard", "p_blackboard"), &BTPlayer::set_blackboard);
ClassDB::bind_method(D_METHOD("get_blackboard"), &BTPlayer::get_blackboard);
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ClassDB::bind_method(D_METHOD("set_prefetch_nodepath_vars", "p_value"), &BTPlayer::set_prefetch_nodepath_vars);
ClassDB::bind_method(D_METHOD("get_prefetch_nodepath_vars"), &BTPlayer::get_prefetch_nodepath_vars);
ClassDB::bind_method(D_METHOD("_set_blackboard_data", "p_blackboard"), &BTPlayer::_set_blackboard_data);
ClassDB::bind_method(D_METHOD("_get_blackboard_data"), &BTPlayer::_get_blackboard_data);
ClassDB::bind_method(D_METHOD("update", "p_delta"), &BTPlayer::update);
ClassDB::bind_method(D_METHOD("restart"), &BTPlayer::restart);
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "behavior_tree", PROPERTY_HINT_RESOURCE_TYPE, "BehaviorTree"), "set_behavior_tree", "get_behavior_tree");
ADD_PROPERTY(PropertyInfo(Variant::INT, "update_mode", PROPERTY_HINT_ENUM, "Idle,Physics,Manual"), "set_update_mode", "get_update_mode");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "active"), "set_active", "get_active");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "auto_restart"), "set_auto_restart", "get_auto_restart");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "blackboard", PROPERTY_HINT_NONE, "Blackboard", 0), "", "get_blackboard");
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ADD_PROPERTY(PropertyInfo(Variant::DICTIONARY, "_blackboard_data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_INTERNAL), "_set_blackboard_data", "_get_blackboard_data");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "prefetch_nodepath_vars"), "set_prefetch_nodepath_vars", "get_prefetch_nodepath_vars");
BIND_ENUM_CONSTANT(IDLE);
BIND_ENUM_CONSTANT(PHYSICS);
BIND_ENUM_CONSTANT(MANUAL);
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ADD_SIGNAL(MethodInfo("behavior_tree_finished", PropertyInfo(Variant::INT, "p_status")));
}
BTPlayer::BTPlayer() {
blackboard = Ref<Blackboard>(memnew(Blackboard));
}
BTPlayer::~BTPlayer() {
}