Better error handling in BTState, BTPlayer & BehaviorTree
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@ -73,6 +73,8 @@ void BehaviorTree::copy_other(const Ref<BehaviorTree> &p_other) {
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Ref<BTTask> BehaviorTree::instantiate(Node *p_agent, const Ref<Blackboard> &p_blackboard, Node *p_scene_root) const {
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ERR_FAIL_COND_V_MSG(root_task == nullptr, memnew(BTTask), "Trying to instance a behavior tree with no valid root task.");
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ERR_FAIL_NULL_V_MSG(p_agent, memnew(BTTask), "Trying to instance a behavior tree with no valid agent.");
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ERR_FAIL_NULL_V_MSG(p_scene_root, memnew(BTTask), "Trying to instance a behavior tree with no valid scene root.");
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Ref<BTTask> inst = root_task->clone();
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inst->initialize(p_agent, p_blackboard, p_scene_root);
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return inst;
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@ -55,7 +55,7 @@ void BTPlayer::_load_tree() {
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Node *agent = GET_NODE(this, agent_node);
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ERR_FAIL_NULL_MSG(agent, vformat("BTPlayer: Initialization failed - can't get agent with path '%s'.", agent_node));
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Node *scene_root = get_owner();
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ERR_FAIL_NULL_MSG(scene_root, "BTPlayer: Initialization failed - can't get scene root (make sure the BTPlayer.owner is set).");
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ERR_FAIL_NULL_MSG(scene_root, "BTPlayer: Initialization failed - can't get scene root (make sure the BTPlayer's owner property is set).");
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tree_instance = behavior_tree->instantiate(agent, blackboard, scene_root);
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#ifdef DEBUG_ENABLED
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if (IS_DEBUGGER_ACTIVE()) {
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@ -52,7 +52,9 @@ void BTState::_update_blackboard_plan() {
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void BTState::_setup() {
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LimboState::_setup();
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ERR_FAIL_COND_MSG(behavior_tree.is_null(), "BTState: BehaviorTree is not assigned.");
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tree_instance = behavior_tree->instantiate(get_agent(), get_blackboard(), get_owner());
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Node *scene_root = get_owner();
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ERR_FAIL_NULL_MSG(scene_root, "BTState: Initialization failed - can't get scene root (make sure the BTState's owner property is set).");
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tree_instance = behavior_tree->instantiate(get_agent(), get_blackboard(), scene_root);
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#ifdef DEBUG_ENABLED
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if (tree_instance.is_valid() && IS_DEBUGGER_ACTIVE()) {
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