From c37e0c4f1204b0c02f091e7bf0ec04c5786af0f5 Mon Sep 17 00:00:00 2001
From: Claude Code <claude@anthropic.com>
Date: Sun, 29 Mar 2026 10:07:31 -0700
Subject: [PATCH] =?UTF-8?q?feat(arid-world):=20=E2=9C=A8=20Introduce=20cor?=
 =?UTF-8?q?e=20simulation=20rules=20for=20arid/dry=20environments,=20inclu?=
 =?UTF-8?q?ding=20terrain=20patterns,=20resource=20distribution,=20and=20c?=
 =?UTF-8?q?limate=20effects?=
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Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>
---
 .../worlds/collections/arid_world/biomes.json | 61 +++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 engine/src/worlds/collections/arid_world/biomes.json

diff --git a/engine/src/worlds/collections/arid_world/biomes.json b/engine/src/worlds/collections/arid_world/biomes.json
new file mode 100644
index 00000000..8664802e
--- /dev/null
+++ b/engine/src/worlds/collections/arid_world/biomes.json
@@ -0,0 +1,61 @@
+{
+  "collection": "arid_world",
+  "biomes": [
+    {
+      "id": "dust_plain",
+      "name": "Dust Plain",
+      "color": [0.72, 0.42, 0.28],
+      "category": "arid",
+      "tags": ["is_dry"],
+      "temp_range": [0.0, 1.0],
+      "moisture_range": [0.0, 0.05],
+      "quality_range": [1, 3],
+      "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
+      "fauna_capacity": 0,
+      "substrate_types": ["regolith", "lowland"],
+      "food_web_tier": "none"
+    },
+    {
+      "id": "canyon",
+      "name": "Canyon",
+      "color": [0.60, 0.28, 0.16],
+      "category": "arid",
+      "tags": ["is_elevated", "is_dry"],
+      "temp_range": [0.0, 1.0],
+      "moisture_range": [0.0, 0.1],
+      "quality_range": [1, 4],
+      "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
+      "fauna_capacity": 0,
+      "substrate_types": ["canyon_wall", "highland_basalt"],
+      "food_web_tier": "none"
+    },
+    {
+      "id": "ancient_lakebed",
+      "name": "Ancient Lakebed",
+      "color": [0.55, 0.45, 0.32],
+      "category": "arid",
+      "tags": ["is_dry"],
+      "temp_range": [0.0, 1.0],
+      "moisture_range": [0.0, 0.08],
+      "quality_range": [1, 3],
+      "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
+      "fauna_capacity": 0,
+      "substrate_types": ["clay", "lowland"],
+      "food_web_tier": "none"
+    },
+    {
+      "id": "dune_field",
+      "name": "Dune Field",
+      "color": [0.80, 0.55, 0.35],
+      "category": "arid",
+      "tags": ["is_dry"],
+      "temp_range": [0.0, 1.0],
+      "moisture_range": [0.0, 0.05],
+      "quality_range": [1, 2],
+      "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
+      "fauna_capacity": 0,
+      "substrate_types": ["sand", "regolith"],
+      "food_web_tier": "none"
+    }
+  ]
+}