Terrain Pipeline Dev Log

A step-by-step walkthrough of building the Endless Idle terrain pipeline from scratch. Each entry covers one piece of the system, explains the decisions behind it, and ends with a visual checkpoint — something you can see on screen that proves the step works before moving on.

Why This Format

The terrain pipeline has a lot of moving parts: Wave Function Collapse solvers, hex-grid math, noise functions, texture blending, ribbon projection. Reading about all of them at once is overwhelming. These dev logs break the pipeline into a linear build sequence where each entry produces a visible result that builds on the last.

If you're implementing the pipeline, follow them in order. If you're trying to understand a specific piece, jump to the relevant entry — each one lists its prerequisites and stands alone as a reference.

The Build Sequence

[01 Foundations] → [02 Solver] → [03 Zone Pass] → [04 Tile Pass] → [05 Noise Pass]
                                                                          ↓
                                                              terrain data complete
                                                                          ↓
                                                                 [06 Chunk Integration]
                                                                          ↓
                                                              chunks render on screen
                                                                          ↓
                                                                 [07 Biome Blending]
                                                                          ↓
                                                              terrain looks good
                                                                          ↓
                                                                 [08 Camera System]
                                                                          ↓
                                                              player can navigate
                                                                          ↓
                                                                 [09 Level Lifecycle]
                                                                          ↓
                                                              full gameplay loop
                                                                          ↓
                                                                 [10 Ribbon Projection]
                                                                          ↓
                                                              spiral visual effect

Entries

#	Dev Log	What You'll See
1	Foundations: Types, Seeded Random Number Generator & Hex Math	Console output: same seed always produces the same values, hex coordinate conversions verified
2	The Wave Function Collapse Solver	Debug output: a generic grid collapses to a valid state with backtracking
3	Zone Pass: Coarse Layout	Debug grid: 5-wide strip colored by zone type with a connected road path
4	Tile Pass: Hex-Resolution Tiles	Per-chunk hex cells colored by tile identity — road, edge, and ground tiles visible
5	Noise Pass: Height & Texture Weights	Terrain data with height displacement and splat weight variation per vertex
6	Chunk Integration: Wave Function Collapse Output to Graphics Processing Unit	Hex chunks appear on screen via the existing render pipeline
7	Biome Blending: Noise-Driven Textures	Distinct biome surfaces — grass, rock, sand blending driven by noise layers
8	Camera System: Orbit Navigation	Zoom, pan, and orbit around the generated terrain
9	Level Lifecycle: Generation, Death & Reset	New level generates on death — player persists, terrain clears and rebuilds
10	Ribbon Projection: The Helical Spiral	Flat terrain wraps onto a 3D helical ribbon surface

Relationship to the Implementation Plan

These dev logs expand on the Phase 1: Terrain implementation plan. The plan describes what each system does and how it fits the architecture. These dev logs describe how to build it — the order of operations, the intermediate states, and what to check at each stage.

The mapping is roughly:

• Dev logs 01–05 expand on WFC Pipeline
• Dev log 06 expands on Chunk Integration
• Dev log 07 expands on Biome Blending
• Dev log 08 expands on Camera System
• Dev log 09 expands on Level Structure
• Dev log 10 expands on Ribbon Projection