Demon

Demon is a beta-stage Doom level editor for the classic Mac OS, written by James Knight and originally distributed under the name MacDeu. The Info-Mac upload demon-10b1.hqx introduces the rename to Demon and a 1.0b1 build that the author candidly describes as not entirely stable but workable for building Doom levels.

From MacDeu to Demon

The release notes flag the package as a direct replacement for macdeu-53b9v4.hqx, carrying the project forward under a new name. Knight pointed users at his MIT AI Lab homepage at www.ai.mit.edu/people/jknight/demon.html for the most current build during active development.

Editor Improvements

Version 1.0b1 added support for multiple real Mac windows, introduced windowWidth and windowHeight configuration options, and replaced auto-scroll with proper scroll bars. Real menus were wired up across the interface, with the Objects menu still pending implementation at the time of release.

Drawing and Geometry Fixes

The linedef draw mode was extended to start drawing on an existing vertex when the cursor lands on one, smoothing level geometry creation. The second sidedef dialog was also fixed in this build, addressing one of the rougher edges of the prior MacDeu interface.

A Mac Doom Toolchain

Macintosh Garden preserves Demon as part of a Doom Editing Suite alongside other Mac WAD utilities such as Hellmaker, MacBSP, and MacHexBSP. The suite is documented as running on System 7.0 through Mac OS 9, with most tools tolerant of 68030 emulation on PowerPC hardware.