Rooms
Load multiple room JSONs here. Click a room to edit it. Linking lets you pick an exit in one room and a spawn in another.
Downloads are per-room. Checked download will save one file per checked room.
Tools
Shortcuts: Ctrl+Z undo,
Ctrl+Y redo,
Ctrl+C/V copy/paste,
Del delete, Ctrl+D duplicate.
Enemy Types
Load an enemy types JSON (keyed by enemy id). Used for placement dropdown, hitbox preview and aggro range preview.
Objects Catalog
Load objects.json to get default properties. Built-ins are always available: flow_butterfly (light source), lamp (save point), flow_butterfly_jar (collectible).
No objects loaded.
Multi-Room Linking
1) Select an Exit in the active room
2) Choose target room + spawn (entry spawn)
3) Click Link
Link Mode: select an Exit in the active room, then click an entry spawn marker in the compare canvas to auto-link.
Compare View
Compare shows a second room canvas (read-only) to visually match door positions.
Properties
Select something to edit properties.