Text Map Painter (map_editor5)

Text Map Painter is a Tkinter-based editor for building and editing ASCII maps. It is designed for MUD/roguelike style map workflows where fast selection and terrain stamping matter more than tile graphics.

Run

python map_editor5.py

Core Features

• Freeform brush selection with adjustable brush size (1x1 through 10x10)
• Space-only selection mode (only selects blank cells)
• Type-to-fill for selected regions
• Undo support (Ctrl+Z)
• Biome generation menus for:
  • Forest
  • Grasslands
  • Swamp
  • Sand
  • Dry Sand

New/Updated Features

1. Smart Select (replaces Ocean Fill)

Smart Select now has two distinct selection families and always appends to your current selection.

• Region Flood:
  • Starts from a clicked blank cell
  • Expands through contiguous blank regions using run/adjacency rules
  • Includes balanced/strict presets and custom tuning (min run, adjacency, min region size)
• Path Corona (Blank):
  • Starts from a clicked blank cell touching filled terrain
  • Traces boundary path using 8-direction movement with corner-wrap prevention
  • Selects blank cells only
  • Radius expansion is constrained to the boundary-adjacent blank path space, so it does not spill into unrelated shapes

All Smart Select actions append (additive selection); they do not replace existing selected cells.

2. Extra Spaces Slider

The top controls now include two sliders side by side:

• Randomness
• Extra Spaces

Extra Spaces defaults to 0%.

• At 25%, each inserted cell has a 25% chance to become a space
• At 100%, all inserted cells become spaces

This affects typed fills and biome insert output.

3. Default Map Creation

You can now create a blank map directly from the app:

• File -> Default Map
• Enter:
  • X size (columns)
  • Y size (rows)
• The current canvas is replaced with a new blank map of that size

4. Grasslands Tuning

Grasslands are tuned to be mostly . with some , and only rare f (no dense F output).

5. Dry Sand Crack Logic

Dry Sand no longer includes dune shape options.

Dry Sand now focuses on cracked-ground behavior:

• explosion creates cracks that radiate away from center
• implosion creates cracks converging toward center
• patchy, irregular, and spotty remain available for variation

Useful Controls

• Left click / drag: brush-select cells
• Ctrl + Left click: remove cells from selection
• Tab: toggle space-only selection
• Alt + A: toggle selection mode label/state
• Escape: clear selection
• Ctrl + Z: undo last edit

Notes

• Saved maps are plain text (.txt)
• Rows are maintained as fixed-width in memory based on current map dimensions