wgt01: tileset build guide + 40-tile generator kit
AGENTS.md: NWN:EE tileset construction reference (constraints, .mdl/.wok walkmesh rules, .set format, Blender->NWN pipeline, prototype->NWN mapping). wgt01/: Westgate Urban Foundation MVP kit. - generator/tiles.py: single source of truth (40-tile table, materials, 12x12 test map, pure paint/height/walkmesh/.set derivations). - generator/build.py: Blender 4.0.2 scene generator (VIS_/WOK_/BLOCK_ per tile, edge metadata, library grid + 12x12 district previews). - generator/make_wok.py: ASCII walkmesh emitter (verts+faces+surfacemat+AABB tree) from the same geometry. - generator/make_set.py: first-pass twu01.set (CRLF) from the tile grammar. - flake.nix: build/wok/set apps + dev shell (pinned Blender 4.0.2, NWN tools). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Claude Opus 4.8
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You are assisting inside Blender to rapidly prototype a Neverwinter Nights: Enhanced Edition urban foundation tileset for the project “Shadows Over Westgate.”
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The goal is NOT to build a full city tileset with buildings. The goal is to generate a reusable tile library of streets, sidewalks, plazas, alleys, ramps, bridges, canals/voids, drains, raised terraces, and foundation pads. Buildings, facades, lamps, signs, roofs, walls, doors, clutter, and district decoration will be modular placeables later.
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Westgate’s intended atmosphere is noir dark fantasy: rain-slick streets, mercantile decay, old stone, smoke, fog, gothic silhouettes, and grimy desperation. The city also has an early industrial-magical layer: steam, alchemy, bound elementals, lightning engines, magical lamps, printing presses, and machinery beneath the gutters. For this pass, represent that only through ground grammar: drains, grates, canal cuts, raised streets, bridge foundations, dark cobbles, and industrial service channels. Do not make buildings.
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PROJECT GOAL
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Create a Blender scene containing a prototype tile library named:
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Westgate_Urban_Foundation_MVP
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Each tile must be a 10m x 10m square module suitable for later NWN tileset conversion.
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Use metric scale.
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Coordinate convention:
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- Each individual tile is centered at origin when built as a source asset.
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- Tile bounds are X = -5 to +5, Y = -5 to +5.
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- Ground level is Z = 0.
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- Raised tier level is Z = 1.5.
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- Canal/void water surface, if present, is Z = -0.3.
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- Do not create true multi-level playable over/under spaces. Bridges may cross non-walkable canal/void areas only.
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- Keep walkable slopes gentle and readable.
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- Keep edges clean and snap-compatible.
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Create each tile as its own Collection. Name collections exactly with their code and readable name, for example:
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CP1_cobble_plain
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ST_S_straight_street
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RA_S_straight_ramp
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Inside each tile collection, create these sub-objects where appropriate:
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VIS_<tilecode> visual geometry
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WOK_<tilecode> simple walkmesh proxy geometry
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BLOCK_<tilecode> non-walkable blocker proxy geometry, if needed
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MARK_<tilecode>_* edge/debug markers, if useful
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The WOK proxy should be simple and functional: mostly flat planes or simple ramp planes. Avoid complex triangulation unless necessary.
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Use simple prototype materials:
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- MAT_wet_cobble_dark
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- MAT_cobble_patch
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- MAT_plaza_slab
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- MAT_sidewalk_stone
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- MAT_curb_dark_stone
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- MAT_canal_black_water
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- MAT_void_black
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- MAT_ramp_stone
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- MAT_drain_iron
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- MAT_foundation_pad
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- MAT_debug_walkmesh
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- MAT_debug_blocker
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Do not spend time on final textures. Use flat colors or simple procedural noise only. This is a geometry and tile-grammar prototype.
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REQUIRED TILE LIBRARY
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Generate these tiles first.
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FLAT WALKABLE GROUND
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1. CP1_cobble_plain
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- Full 10x10 walkable dark cobble.
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- Subtle bevel or edge trim allowed.
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- WOK full square at Z=0.
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2. CP2_cobble_plain_wet_variant
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- Same as CP1 but with darker wet material patches.
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- Geometry can be the same with different material regions.
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3. CP3_cobble_plain_broken_variant
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- Same as CP1 but with a few shallow cracked/patch shapes.
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- Keep WOK flat.
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4. AL1_narrow_alley_paving
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- Full tile walkable, but visual paving suggests a narrower central alley.
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- Add darker side strips/foundation margins where modular building placeables might sit.
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- Do not place buildings.
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5. PL1_plaza_slab
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- Full tile walkable large stone slab plaza.
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- Less busy than cobble.
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6. DR1_drain_detail
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- Full tile walkable cobble with a central or offset iron drain/manhole/grate.
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- Drain is visual only unless it is a tiny non-walkable inset.
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7. MU1_muddy_repair_patch
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- Full tile walkable cobble with broken/muddy repair patch.
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- Keep WOK flat.
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8. LOT_foundation_pad
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- A quiet, flat urban foundation pad for placing modular buildings or large placeables.
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- Mostly plain stone, minimal decoration.
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- Full WOK square.
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STREET SHAPES
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9. ST_S_straight_street
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- Straight street path running north-south through the tile.
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- Sidewalk/curb margins on east and west sides.
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- Entire tile can remain walkable for flexibility, but VIS should clearly read as street + curb + sidewalk.
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- WOK full square unless blockers are necessary.
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10. ST_C_street_corner
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- L-shaped street corner.
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- Sidewalk/curb margins.
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- Use visual contrast, not blockers, unless necessary.
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11. ST_T_street_t_junction
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- T-junction street.
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12. ST_X_street_crossroads
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- Four-way street crossing.
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13. ST_E_street_end
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- Dead-end street with a visual blocked/terminated paving edge.
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- Do not add a wall or building; just create the ground condition.
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14. ST_W_wide_boulevard
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- Wider street segment, usable for civic or merchant districts.
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- Include broad sidewalks.
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15. ST_G_gate_mouth
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- Street tile that visually suggests a gate approach or major threshold.
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- No gate model. Just heavier paving, curb geometry, and alignment pads.
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16. ST_D_street_with_central_drain
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- Straight street with central gutter/drain channel.
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- Channel should be shallow and walkable or visually recessed without pathing problems.
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SIDEWALK / CURB / GUTTER
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17. SW_S_sidewalk_straight
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- Raised sidewalk/promromenade strip along one or both sides.
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- Use low curb height, around Z=0.12 to 0.18.
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- Keep WOK simple.
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18. SW_C_sidewalk_corner
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- Corner curb/sidewalk condition.
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19. SW_T_sidewalk_t_split
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- Sidewalk T connector.
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20. SW_X_sidewalk_crossing
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- Sidewalk/plaza connector or crossing tile.
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21. SW_E_sidewalk_end
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- Sidewalk ending/transition tile.
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22. GD_S_gutter_straight
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- Straight shallow gutter/drain channel.
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23. GD_C_gutter_corner
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- Gutter corner.
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24. GD_X_gutter_crossing_grate
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- Drain crossing with visible grate.
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RAISED TIERS / RAMPS / STAIRS
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25. UP1_raised_terrace
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- Full tile raised walkable surface at Z=1.5.
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- WOK full square at Z=1.5.
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26. UP2_raised_plaza_variant
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- Raised plaza/slab variant at Z=1.5.
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27. TE_S_retaining_edge_straight
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- Half or edge tile where one side is raised terrace at Z=1.5 and the lower side is at Z=0.
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- Include vertical retaining wall face.
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- The top and bottom walkable areas should be clear.
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- Do not create inaccessible slivers.
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28. TE_C_retaining_edge_outer_corner
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- Raised/lower retaining corner.
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29. TE_I_retaining_edge_inner_corner
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- Raised/lower retaining inside corner.
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30. RA_S_straight_ramp
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- Straight ramp from Z=0 to Z=1.5 across the tile.
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- Ramp direction north-south.
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- Add simple side retaining edges.
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- WOK should be a clean ramp plane.
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31. RA_C_corner_or_dogleg_ramp
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- A corner/dogleg ramp from lower to upper.
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- Keep it simple and pathable.
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32. STA_broad_stair
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- Broad stair from Z=0 to Z=1.5.
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- Since NWN pathing can be sensitive, create a simplified ramp-like WOK proxy over the visible stairs.
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- Visual stairs may be stepped; WOK should be smooth or very simple.
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CANAL / VOID / BRIDGES
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33. CN1_canal_black_water
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- Non-walkable canal/black water/void tile.
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- Visual water at Z=-0.3.
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- WOK absent or marked non-walkable.
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- Add stone canal edge only if it does not imply mismatched adjacency.
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34. CN2_narrow_drainage_cut
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- Narrow non-walkable drainage cut through the tile.
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- Include stone/cobble edges.
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35. CE_S_canal_edge_straight
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- Straight canal embankment edge.
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- One side walkable at Z=0, one side canal/void non-walkable.
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- Add clean retaining wall face.
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36. CE_C_canal_edge_corner
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- Canal edge corner.
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37. CE_I_canal_edge_inside_corner
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- Canal inside corner.
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38. BR_1_narrow_bridge
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- Narrow bridge crossing canal/void.
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- Walkable bridge deck at Z=0 or slightly above Z=0.
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- Non-walkable canal beneath.
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- No playable underpass.
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- Add simple side parapet placeholders if useful, but keep them low/blocker-safe.
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39. BR_2_broad_bridge
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- Broad bridge suitable for a main street.
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- Same constraints as BR_1.
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40. SEW_sewer_mouth_culvert
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- Canal/drain edge with sewer mouth or culvert visual.
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- Mostly decorative, but useful for noir city composition.
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BUILDER GROUP / PREVIEW ASSEMBLIES
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After generating source tile collections, create a separate Collection:
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PREVIEW_tile_library_grid
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In this collection, instantiate or duplicate each tile in a neat grid with labels so I can inspect the full library.
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Also create another Collection:
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PREVIEW_12x12_test_district
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Build this exact 12x12 prototype map using the generated tiles. Place each tile on a 10m grid. Each tile should be positioned by row/column, 10m apart.
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Map:
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Row 01:
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CN1 CN1 CE_S CE_S BR_2 CE_S CE_S CN1 CN1 CN1 CN1 CN1
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Row 02:
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CN1 CE_C SW_S ST_S ST_S ST_S SW_S CE_C CN1 CN1 CN1 CN1
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Row 03:
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CE_S SW_S ST_C ST_S ST_T ST_S ST_C SW_S CE_S CE_S BR_1 CE_S
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Row 04:
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SW_S AL1 AL1 CP1 PL1 PL1 CP1 AL1 AL1 SW_S ST_S SW_S
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Row 05:
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SW_S AL1 LOT CP2 PL1 PL1 CP2 LOT AL1 SW_S ST_S SW_S
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Row 06:
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ST_S ST_S ST_T ST_S ST_X ST_S ST_T ST_S ST_S ST_C ST_S SW_S
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Row 07:
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SW_S AL1 LOT CP1 ST_S ST_S CP1 LOT AL1 SW_S CP2 SW_S
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Row 08:
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SW_S AL1 AL1 CP1 PL1 PL1 CP1 AL1 AL1 SW_S CP2 SW_S
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Row 09:
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CE_S SW_S ST_C ST_S ST_T ST_S ST_C SW_S CE_S TE_S TE_C SW_S
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Row 10:
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CN1 CE_C SW_S CP1 RA_S UP1 UP1 TE_S TE_S UP1 RA_S SW_S
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Row 11:
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CN1 CN1 CE_S CE_S BR_2 CE_S CE_S CN1 CE_S SW_S ST_S SW_S
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Row 12:
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CN1 CN1 CN1 CN1 CN1 CN1 CN1 CN1 CN1 SW_S ST_E SW_S
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Use tile names matching the generated collection names. If exact variants are not available yet, use the closest equivalent and note the substitution.
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DESIGN CONSTRAINTS
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- Do not model buildings.
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- Do not model full walls except retaining/canal/bridge support walls needed by terrain.
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- Do not model roofs.
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- Do not model decorative clutter except minimal drains/grates required to communicate tile purpose.
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- Avoid tiny details.
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- Prioritize edge alignment, walkability, and builder usefulness.
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- Keep polygon counts low.
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- Keep all tile edges snap-clean.
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- Avoid overhangs at tile boundaries.
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- Avoid geometry extending beyond -5/+5 bounds unless it is an explicitly marked harmless visual trim.
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- Use bevels sparingly.
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- Prefer clean simple geometry over visual polish.
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- Use material slots consistently so final textures can replace prototype materials later.
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EDGE COMPATIBILITY
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Think of each tile edge as one of these edge types:
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FLAT walkable ground at Z=0
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RAISED walkable ground at Z=1.5
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CANAL non-walkable canal/void
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RAMP ramp transition edge
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MIXED special edge, document it
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For each tile, create a custom property or add a Text object note listing its north/east/south/west edge types.
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Example:
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ST_S_straight_street
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N: FLAT
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E: FLAT
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S: FLAT
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W: FLAT
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RA_S_straight_ramp
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N: RAISED
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E: FLAT
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S: FLAT
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W: FLAT
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CE_S_canal_edge_straight
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N: FLAT
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E: CANAL
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S: FLAT
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W: FLAT
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Add these notes in a scene text block called:
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TILE_EDGE_METADATA
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OUTPUT EXPECTATIONS
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At the end:
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1. Save the Blender file as:
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westgate_urban_foundation_mvp.blend
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2. Report:
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- number of tile collections created;
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- any tiles skipped;
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- any substitutions made;
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- any geometry/pathing concerns;
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- next recommended pass.
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3. Do not spend time making final art.
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4. Do not get stuck on perfect NWN export.
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5. The deliverable is a rapid, inspectable Blender prototype of the tile library and a test district.
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