WithinTilemapBoundsRule

A rule that validates placement is within the boundaries of a tilemap. This rule works by checking if a tile exists at a proposed placement position on the target TileMapLayer. It ensures that a player or system cannot place objects in empty, unmapped areas of the scene. Behavior:

• The rule passes if every indicator is positioned over a cell that has an assigned TileData object on the target map.
• The rule fails if any indicator is over a cell that returns null for TileData, indicating that the cell is outside of the mapped region. Usage:
• Attach this rule to a PlacementSession for context wide injection OR a ScenePlacementEntry for placeable specific rule evaluation
• The GridTargetingState must provide a valid TileMapLayer for the rule to check against.

Source: addons/grid_placement/placement/placement_rules/template_rules/within_tilemap_bounds_rule.gd

Syntax

class WithinTilemapBoundsRule extends TileCheckRule

Members

Name	Kind	Summary
success_message	Property	Success message for valid placement.
failed_message	Property	Failure message for out-of-bounds placement.
no_indicators_message	Property
enable_debug_diagnostics	Property	Optional: enable extra per-indicator diagnostics during tile lookups (very verbose)
NON_CRITICAL_ISSUE_KEYWORDS	Field	Issue keywords considered non-critical for bounds checking (cosmetic/setup)
setup	Method
tear_down	Method
validate_placement	Method
get_failing_indicators	Method