From 076f21f9cababb74966fea7fb382b033883ba01a Mon Sep 17 00:00:00 2001
From: "Kacper Kostka (aider)" <kacper.kostka08@gmail.com>
Date: Sat, 5 Apr 2025 14:54:17 +0200
Subject: [PATCH] feat: Enhance terrain generation with noisy sand and dynamic
 grass coverage

---
 js/world.js | 43 ++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 38 insertions(+), 5 deletions(-)

diff --git a/js/world.js b/js/world.js
index f1debd6..b85154c 100644
--- a/js/world.js
+++ b/js/world.js
@@ -99,16 +99,49 @@ function generateSpecialChunk(chunkData, chunkX, playerChunkX) {
     // Find the lowest points for water
     let minHeight = Math.min(...heightMap);
     
-    // Place sand according to the height map
+    // Place sand according to the height map with noise
     for (let x = 0; x < CHUNK_SIZE; x++) {
         const height = heightMap[x];
-        for (let y = floorY - height; y < floorY; y++) {
+        
+        // Add some noise to the height
+        const noiseHeight = height + Math.floor(random() * 3) - 1;
+        
+        for (let y = floorY - noiseHeight; y < floorY; y++) {
             chunkData[y * CHUNK_SIZE + x] = SAND;
         }
         
-        // 3. Add grass on top of the hills
-        if (height > baseHeight + 3) { // Only on higher parts
-            chunkData[(floorY - height) * CHUNK_SIZE + x] = GRASS;
+        // 3. Add grass with more coverage and noise
+        // Add grass on top of the sand with probability based on height
+        const grassProbability = (height - baseHeight) / (hill1Height - baseHeight);
+        
+        if (random() < grassProbability * 0.8 + 0.2) { // Minimum 20% chance, up to 100%
+            // Add grass on top
+            chunkData[(floorY - noiseHeight) * CHUNK_SIZE + x] = GRASS;
+            
+            // Sometimes add patches of grass on the sides
+            if (random() < 0.3) {
+                // Add grass to the left if possible
+                if (x > 0 && chunkData[(floorY - noiseHeight) * CHUNK_SIZE + (x-1)] === SAND) {
+                    chunkData[(floorY - noiseHeight) * CHUNK_SIZE + (x-1)] = GRASS;
+                }
+            }
+            
+            if (random() < 0.3) {
+                // Add grass to the right if possible
+                if (x < CHUNK_SIZE-1 && chunkData[(floorY - noiseHeight) * CHUNK_SIZE + (x+1)] === SAND) {
+                    chunkData[(floorY - noiseHeight) * CHUNK_SIZE + (x+1)] = GRASS;
+                }
+            }
+            
+            // Sometimes add grass patches below the top
+            if (random() < 0.15 && noiseHeight > 2) {
+                const patchDepth = Math.floor(random() * 3) + 1;
+                for (let d = 1; d <= patchDepth; d++) {
+                    if (floorY - noiseHeight + d < floorY) {
+                        chunkData[(floorY - noiseHeight + d) * CHUNK_SIZE + x] = GRASS;
+                    }
+                }
+            }
         }
     }