Grid Graph Rules



The GridGraph has a flexible system of rules that can be applied. These rules modify the nodes in various ways. For example a rule can apply a tag to a node based on the layer of the GameObject below the node, or it can apply a penalty to the node based on the slope of the surface.

You can add new rules by clicking the "Add Rule" button in the GridGraph inspector.

The available rules are

Adding rules using a script

You can also add rules from a script:

// Get the first grid graph in the scene
var gridGraph =;

gridGraph.rules.AddRule(new RuleAnglePenalty {
penaltyScale = 10000,
curve = AnimationCurve.Linear(0, 0, 90, 1),

Writing Custom Rules

If you want to write your own grid graph rules, then check out: Writing Custom Grid Graph Rules.