Replace egui text rendering with a BitmapFont system:
- Glyph.tile: u32 replaces ch: char; top-left pixel of PNG is background sentinel
- BitmapFont loads/preprocesses PNG to opaque-white + transparent, tinted at render time
- Default font: assets/vga-font-8x16.png (CP437, 8×16 tiles); placeholder generated if missing
- Boards can specify a per-board font via [font] in their .toml file
- Editor Board tab: "Font…" button opens font dialog (rfd file picker, tile dims, tilesheet preview)
- Glyph picker: tile grid from active font replaces hardcoded ASCII char grid
- map_file: TileIndex untagged enum accepts char or integer in palette entries
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Updates Cargo.toml package name, window title, and all references in
ARCHITECTURE.md and CLAUDE.md.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Documents render.rs, editor.rs, and glyph_picker.rs; updates the module
structure diagram and main.rs section to reflect the refactored layout.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Documents the replacement of Element with Behavior + Archetype, the
elimination of the per-board element palette, the new map file format
(archetype = "name" instead of passable = bool), the ErrorBlock sentinel,
and the editor mode (AppMode, EditorState, palette panel, click-to-paint).
Also updates "What's not yet implemented" to reflect editor progress and
call out the Object behavior / glyph chooser / file open gaps.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Documents the player-as-object goal and calls out the four specific
places in the current design (Board.player, player_start, try_move,
main.rs overlay) that will need to change when that's implemented.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Documents the module structure, key design decisions and their reasons,
map file format design, what's not yet implemented, and ZZT background
for future development sessions.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
randrews