seamless-isometric-terrain

Files (14)

• SKILL.md
• 01-goal-map.png · assets/
• 02-single-grass-tile.png · assets/
• 03-tile-set.png · assets/
• 04-wrong-vs-right.png · assets/
• 01-overview.md · references/
• 02-production-guide.md · references/
• 03-prompts.md · references/
• 04-rules.md · references/
• 05-troubleshooting.md · references/
• 06-tileset-spec.md · references/
• MEOWART_iso_tile_transparent_resepD_v3.json · scripts/
• README.md · scripts/
• build_workflow.py · scripts/

SKILL.md (first lines)

# Seamless Isometric Terrain (Hay Day-style) — Skill

## What this skill does

This skill produces **isometric ground tiles** that snap together into a clean map
with **no seams, no gaps, and no color chaos** — the look of mobile farm games like
Hay Day. It targets **ComfyUI on an RTX 3060 12GB / 32GB RAM** but the recipe works
on any SDXL-capable GPU.

The single most important idea: **a map looks seamless when every tile shares the
exact same diamond shape and thickness.** Get the shape consistent first (fixed seed),
then vary only the surface texture. Everything in this skill enforces that rule.

![Target seamless map](assets/01-goal-map.png)
*Goal: tiles that connect into a continuous map. This is a reference render — production tiles are generated one-by-one in ComfyUI and assembled by the game engine.*

## When to use this skill

- The user wants to make terrain / ground tiles for an isometric game or map.
- Tiles don't line up: visible **edges, seams, gaps**, or **mismatched sizes/angles**.
- Tiles have **mixed/irregular colors**, stray grass rims, or random props.
- The user needs the **ComfyUI workflow, prompts, settings, or transparent-PNG export** for tiles.
- The user asks to extend a tile set (seasons, new materials like sand/stone/snow).

## How to use this skill (workflow at a glance)

1. **Read the overview** → `references/01-overview.md` (concepts + the golden rule).
2. **Set up ComfyUI** with the proven recipe → `references/02-production-guide.md`.
3. **Copy the prompts** (positive/negative + per-tile table) → `references/03-prompts.md`.
4. **Follow the rules + the avoid-list** → `references/04-rules.md`.
5. **If a tile is wrong**, diagnose it → `references/05-troubleshooting.md`.
6. **Build the full set / extend it** → `references/06-tileset-spec.md`.

When running the workflow programmatically, see `scripts/` for the ComfyUI graph
builder and the rembg (transparent background) node plan.

## The golden rule (never break this)

> **Fix the seed. Keep the prompt short. Same shape for every tile.**
>
> Seam problems are almost never a texture problem — they are a **shape consistency**
> problem. Use one **FIXED seed** for the whole set so every tile is the same diamond,
> then only swap the short surface phrase per material.

![Single target tile](assets/02-single-grass-tile.png)
*One tile, done right: 2:1 diamond, full surface, thick solid soil base, clean background.*

## Quick reference card

| Setting | Value |
|---|---|
| Checkpoint | `juggernautXL_ragnarokBy` |
| LoRA 1 | `isometric_tilemap_xl` @ 0.75 |
| LoRA 2 | `white_background_sdxl` @ 0.7 |
| Sampler / Scheduler | DPM++ 2M / Karras |
| Steps / CFG | 30 / 6.5 |
| Seed | **FIXED** (identical for every tile in the set) |
| Resolution | 1024 × 1024, batch 1 |
| VAE | `sdxl_vae` |
| Export | rembg / SAM → transparent PNG |

**Positive template:**
```
single isometric full [SURFACE] block tile, 2:1 isometric view,
thick solid [COLOR] soil base underneath, soft painterly shading,
simple clean composition, isolated on plain flat background,
game asset, high quality
```

**Never put these in the prompt** (top 3 causes of failure):
1. `thin grassy rim` / `green grass along the edges`
2. `Hay Day mobile farm game art style, cute hand-painted cartoon`
3. Long, wordy surface descriptions

See `references/04-rules.md` for the full avoid-list and `references/05-troubleshooting.md` for fixes.

## Verification

The tile set is done only when **every** box is checked:

- [ ] Each tile fills its full 2:1 isometric footprint — no thin grassy rim or stray edge.
- [ ] Placed in a grid, tiles connect with **no visible seam, gap, or color mismatch**.
- [ ] The seed was **fixed** across the whole set, so colors/lighting match.
- [ ] No stray props, buildings, or extra objects baked into a ground tile.
- [ ] Background removed to clean transparent alpha (no halo/fringe).
- [ ] The prompt did **not** contain any of the 3 banned phrases above.
- [ ] 3+ terrain types generated and verified together in one test map.

From 0xheycat/isometric-game-skills, MIT.

More from 0xheycat/isometric-game-skills