What problem does it solve? Placing props, aligning object groups, and validating navigation positions in 3D game scenes usually requires hand-tuned transforms and guesswork. This Skill replaces that with four bounded spatial tools that produce verifiable evidence for each geometric decision. ## Core Features & Use Cases - Placement Testing: Evaluate a candidate pose with summer_test_placement before mutating the scene, checking overlap counts, grounded state, and floor gap. - Surface Snapping: Seat objects on floors, shelves, tables, or ramps with summer_snap_to_surface, including slope alignment via alignUp. - Group Alignment: Align or evenly distribute 2–16 objects along a chosen world axis with summer_align_distribute_3d. - Navigation Validation: Probe whether NPCs, pickups, or portals are reachable on the navigation map with summer_navigation_probe. - Use Case: When building a level, snap furniture onto a sloped floor, distribute crates evenly along a wall, then probe that an enemy spawn point is reachable from the player start — verifying each result with a rendered screenshot. ## Quick Start Open my 3D scene in Summer Engine and place the crate prop on the warehouse floor, then verify it is grounded and reachable on the navigation map.
