rebalance mountains

island/data.ts

@@ -5,4 +5,4 @@ export const BEACH = 1;
 export const LIGHT_FOREST = 2;
 export const DENSE_FOREST = 3;
 export const MOUNTAIN = 4;
-export const ICECAP = 9;
+export const ICECAP = 6;

island/generators.ts

@@ -8,6 +8,25 @@ export type LobeGeneratorConstructor = (
   basePos: number
 ) => LobeGenerator;
 
+/** form mountain  */
+export const SMALL_MOUNTAIN: LobeGeneratorConstructor =
+  (islands: IslandGrid, basePos: number) => () => {
+    const islandTiles = islands.floodSearch(basePos, (tile) => tile > WATER);
+
+    const edgeTiles = islandTiles.filter(
+      (pos) => islands.data[pos] == WATER || islands.data[pos] == BEACH
+    );
+    islands.dropWithin(edgeTiles);
+
+    const mountainTiles = islands.floodSearch(
+      basePos,
+      (tile) => tile > MOUNTAIN
+    );
+    islands.dropWithin(mountainTiles);
+
+    return true;
+  };
+
 /** form mountain with icecap */
 export const BIG_MOUNTAIN: LobeGeneratorConstructor =
   (islands: IslandGrid, basePos: number) => () => {
@@ -150,7 +169,7 @@ export const NO_ISLAND: LobeGeneratorConstructor =
   };
 
 export const BIG_ISLANDS = [BIG_MOUNTAIN, BIG_BEACH, HILLY_FOREST];
-export const ROCKY_ISLANDS = [BIG_MOUNTAIN, HILLY_FOREST];
+export const ROCKY_ISLANDS = [SMALL_MOUNTAIN, BIG_MOUNTAIN, HILLY_FOREST];
 export const GREEN_ISLANDS = [
   SCATTERED_FOREST,
   CONTIGUOUS_FOREST,
@@ -158,6 +177,7 @@ export const GREEN_ISLANDS = [
 ];
 export const SMALL_ISLANDS = [SMALL_BEACH, SCATTERED_FOREST, ERODED_BEACH];
 export const ALL_ISLANDS = [
+  SMALL_MOUNTAIN,
   BIG_MOUNTAIN,
   SMALL_BEACH,
   BIG_BEACH,

island/render.ts

@@ -22,10 +22,7 @@ export function renderIslands(
           cx.fillStyle = "#008800";
           break;
         case MOUNTAIN:
-        case 5:
-        case 6:
-        case 7:
-        case 8:
+        case MOUNTAIN + 1:
           cx.fillStyle = "#666666";
           break;
         default: