testlevel chapters 2-31 overwrite game memory (coin counter and flag rows end after world 8: progress, language, options): level projects, play-tests and the arena use chapters 1 and 32-49, old settings migrate; level tally counts the level's own coins and secrets

notes/levelbau.md

@@ -68,6 +68,31 @@ stein, stein_kante, stein_moos, platte, holz_dunkel, holz_maser, holzbalken, rin
 inka, muster_lila, …`), a direct index (int) or a flat colour (`'meer'`, `'rot'`, … or
 `(r,g,b)`; appended to the texture table as a flat-colour entry (flags 0x105, page −1)).
 Contact sheet with indices: `notes/img/texturen_dorf.png`.
+
+**Texture names on other bases** (2026-11-07). The `TEX` indices are village (t1l1m001) indices; on another
+base the same index is a different picture (village 2: index 1 = dark red floor). Names are therefore
+resolved per base by picture: `levelbuild.BaseTextures` holds a fingerprint (FNV-1a over page format,
+size and pixels of the entry's rectangle) of every named village texture; a name maps to the village index
+if the base shows that picture there (village 1: always → outputs unchanged), else to the first base entry
+with the same picture (flags 0x104 preferred). Coverage of the 47 names: t1l1m002 38 (missing: the three
+flower textures, `wood_grain*`, `wood_brown*`, `wood_rings`, `wood_edge`), t1l1m003 29, t1l1m004 28,
+t1l2m001 9, t1l3m001/t1l5m001 0–2.
+* Java builder (`LevelBuilder`, test world/arena/jump lab, `fromCd`): a missing picture is **copied from the
+  village** (CD file loader `wads/t1l1m001.wad`): packed onto a new 256×256 page (same page flags, 1 px
+  clamped border) and appended as an entry after the base table; flat colours and copies share the
+  appended range in order of first use. Without a loader (editor brushes: `BrushCompiler` passes none)
+  the name is rejected: "texture 'flowers' is a village texture this base level does not have …"
+  (the editor shows that as a brush warning and only offers the names the scene's base has).
+  `LevelBuilder.baseTextureNames()` lists the names a base has.
+* Python `tools/levelbuild.py --base`: same matching (md5 of RGBA rectangle); missing names raise a
+  KeyError (no copying).
+* In game (apptest, display :22, 2026-11-07): Java-built level on t1l1m002 (grass box, stone box, sand,
+  trees, plus copied `flowers`, `wood_rings`, `wood_grain`), `--editor-import` → level mod, Village
+  chapter 2: grass green, stone grey, trees bark + leaves, copied textures correct
+  (`notes/img/editor/village2_levelbuild_textures.jpg`, `…_textures2.jpg`). Before: grass = dark red
+  (`village2_levelbuild_start_camera.jpg`).
+* Editor (display :22): on a t1l1m002 scene the brush swatches and the texture grid show the base's own
+  pictures for the names, without the names it lacks (`notes/img/editor/village2_texture_picker.jpg`).
 **Every triangle shows a whole texture tile** (the engine has no free UVs) – so
 everything is split into 1×1 pieces; narrow/flat walls show the texture squashed.
 
@@ -190,6 +215,9 @@ loop:  if g21 == 3                    ; game state "running"
   49 chapter slots, table 0x572420) and calls `lama-mod an`. For this, `lama-mod` now also takes
   symlinks from mod folders (`find … -type f -o -type l`). Checked: chapter 2 on the map is
   selectable and loads the test world.
+* **Only chapters 1 and 32–49 are safe** for world 9: the per-chapter coin counter and flag byte of
+  the other chapters overwrite game globals (chapter 9 destroys the furthest progress), see
+  [testlevel-chapters.md](testlevel-chapters.md).
 * The selection map shows no background for world 9 (only text) and 772 as the coin target
   (coin table 0x5722f4 only has worlds 1–8) – cosmetic.