| /datum/bt_node/composite | Base composite node. Holds an ordered list of child bt_node instances. |
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| /datum/bt_node/composite/sequence | Sequence node: ticks children in order.
Returns BT_FAILURE on first child failure.
Returns BT_RUNNING on first child returning BT_RUNNING (stops further evaluation).
Returns BT_SUCCESS only if all children succeed. |
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| /datum/bt_node/composite/selector | Selector node: ticks children in order.
Returns the first non-BT_FAILURE result (BT_SUCCESS or BT_RUNNING), stopping further evaluation.
Returns BT_FAILURE only if all children fail. |
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| /datum/bt_node/composite/subplan | Subplan node: Runs child and applies configurable restart policies
when the child completes instead of propagating completion directly. |
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| /datum/bt_node/composite/parallel | Parallel node: ticks ALL children every planning cycle, regardless of intermediate results.
Success and failure are determined by the configurable success_policy and failure_policy. |
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