Node Reference
The AI Brain Graph comes packed with four main type of nodes:
AI Brain State Node
AI Transition Node
AI Action Node
AI Decision Node
Additionally, you'll get some helper nodes:
Comment Node
AI Brain State Alias Node
AI Brain Any State Node
Finally, when you work with a Subgraph, you have access to:
AI Brain Subgraph Nodes
AI State In Nodes
AI Transition Out Nodes
Main Nodes
AI Brain State Node
A State node represents a single state in the MMTools AIBrain.
Each state should be given a unique name by right-clicking the header and choosing Rename.
The Set as starting state button will set the state as the first one in the MMTools AIBrain states list.
Attributes
Can Transition To Self: if set to false, self referencing transitions will be removed (for instance Idle > Idle)
Inputs
States In (multiple State connections): a list of entry points from other states transitions
Actions (multiple Action connections): a list of actions that should be performed when entering the state itself
Outputs
Transitions (multiple Transition connections): a list of transitions that will let the system exit from this state
AI Transition Node
A Transition node represents a single transition from a state in the MMTools AI Brain: a state can have more than one transition.
If you wish, you can rename the node by right-clicking the header and choosing Rename but this won't affect the AI generation.
A Transition node should always have a connected AIDecision node
Attributes
This node has no attributes.
Inputs
Decision (single Decision connection): a single AI Decision Node that will let the AI Brain exit from the actual state
Input (single Transition connection): a single connection from the AI Brain State
Outputs
True State (single State connection): a connection to the state that should be activated when the decision is true
False State (single State connection): a connection to the state that should be activated when the decision is false
AI Action Node
Action nodes are graph representations of AIAction components. They come with a single output element that should be connected to the state. This will tell the state itself that this action should be executed.
A node may have some parameters, corresponding with the Corgi/TopDown engine AIAction components.
If you wish, you can rename the node by right-clicking the header and choosing Rename but this won't affect the AI generation.
Attributes
Label: corresponds to the regular AIAction label
Depending on the corresponding AIAction, you'll have access to a list of paramenters
Inputs
This node has no input connections.
Outputs
Output (multiple Action connections): a single AI Decision Node that will let the AI Brain exit from the actual state
AI Decision Node
Decision nodes are a graph representation of AIDecision components. They come with a single output element that should be connected to a state transition. This will define the condition to exit the state.
If you wish, you can rename the node by right-clicking the header and choosing Rename but this won't affect the AI generation.
Attributes
Label: corresponds to the regular AIDecision label
Depending on the corresponding AIDecision, you'll have access to a list of paramenters
Inputs
This node has no input connections.
Outputs
Output (multiple Decision connections): a single AIDecision Node that will let the AI Brain exit from the actual state
Helper Nodes
Comment Node
Comment nodes have the only purpose of letting you add notes in your graph. They won't generate anything in the character AI Brain System.
Clicking on the header will let you enter edit note.
Attributes
This node has no input attributes.
Inputs
This node has no input connections.
Outputs
This node has no output connections.
AI Brain State Alias Node
The AI Brain State Alias Node will let you create alias elements for your states: this will avoid main spaghetti like brains when things get complicated.
Attributes
Available States: the node will show a list of nodes:
In the main graph all nodes and subgraph-exposed nodes will be shown
In a subgraph, only inner nodes will be shown
Inputs
States In (multiple State connections): a list of entry points from other states transitions
Outputs
This node has no output connections.
AI Brain Any State Node
The AI Brain Any State node will let you generate Decision/Transition logic for all nodes in your graph:
If added in a main Graph, also subgraph States will be affected
If added in a subgraph, only subgraph States will be affected
Attributes
This node has no input attributes.
Inputs
This node has no input connections.
Outputs
Transitions (multiple Transition connections): a list of transitions that will let the system exit all included states
Subgraph Nodes
AI Brain Subgraph Node
A Subgraph node is a special state node, that lets you create a inner state/decision/action logic.
It can be set as a starting node (in this case its inner starting node will be used).
You can create a subgraph asset and assign it to the Subgraph field.
You cannot create nested subgraphs (i.e.: you cannot add a subgraph inside a subgraph)
Attributes
Subgraph: the subgraph data
Inputs
State In (list of multiple State connections): a dynamically generated list of state connections (see AI State In Nodes)
Outputs
Transition Out (list of single Transition connections): a dynamically generated list of transition connections (see AI Transition Out Nodes)
AI State In Node
The AI State In node exposes an AI Brain State node inside a subgraph to the parent brain graph.
State In nodes are only available in a subgraph.
Attributes
This node has no attributes
Inputs
This node has no input connections.
Outputs
Input (single State connection): this node will generate a State In connection in the subgraph node of the parent graph
AI Transition Out Node
The AI Transition Out node exposes an AI Transition node connection inside a subgraph to the parent brain graph.
Transition Out nodes are only available in a subgraph.
Attributes
This node has no attributes
Inputs
Output (single Transition connection): this node will generate a Transition Out connection in the subgraph node of the parent graph
Outputs
This node has no output connections.
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