Move the 12MB heightmap data from the JS code of _kali's 9 alpha 21 realworld maps to separate JSON files (following the new JSON function in 871ed04521).

Don't use the JSON file ending, so that Atlas and gamesetup don't need
code to avoid parsing these huge files.

This was SVN commit r20157.

binaries/data/mods/public/maps/random/rmgen2/gaia.js

@@ -1271,15 +1271,19 @@ function getRandomDeviation(base, deviation)
  * Import a given digital elevation model.
  * Scale it to the mapsize and paint the textures specified by coordinate on it.
  *
- * @param heightmap - An array with a square number of heights
- * @param tilemap - The IDs of the palletmap to be painted for each heightmap tile
- * @param pallet - The tile texture names used by the tilemap.
  * @return the ratio of heightmap tiles per map size tiles
  */
-function paintHeightmap(heightmap, tilemap, pallet, func = undefined)
+function paintHeightmap(mapName, func = undefined)
 {
+	/**
+	 * @property heightmap - An array with a square number of heights.
+	 * @property tilemap - The IDs of the palletmap to be painted for each heightmap tile.
+	 * @property pallet - The tile texture names used by the tilemap.
+	 */
+	let mapData = RMS.ReadJSONFile("maps/random/" + mapName + ".hmap");
+
 	let mapSize = getMapSize(); // Width of the map in terrain tiles
-	let hmSize = Math.sqrt(heightmap.length);
+	let hmSize = Math.sqrt(mapData.heightmap.length);
 	let scale = hmSize / (mapSize + 1); // There are mapSize + 1 vertices (each 1 tile is surrounded by 2x2 vertices)
 
 	for (let x = 0; x <= mapSize; ++x)
@@ -1306,14 +1310,14 @@ function paintHeightmap(heightmap, tilemap, pallet, func = undefined)
 			let neighbors = [];
 			for (let localXi = 0; localXi < 4; ++localXi)
 				for (let localYi = 0; localYi < 4; ++localYi)
-					neighbors.push(heightmap[(hmTile.x + localXi + shift.x - 1) * hmSize + (hmTile.y + localYi + shift.y - 1)]);
+					neighbors.push(mapData.heightmap[(hmTile.x + localXi + shift.x - 1) * hmSize + (hmTile.y + localYi + shift.y - 1)]);
 
 			setHeight(x, y, bicubicInterpolation(hmPoint.x - hmTile.x - shift.x, hmPoint.y - hmTile.y - shift.y, ...neighbors) / scale);
 
 			if (x < mapSize && y < mapSize)
 			{
 				let i = hmTile.x * hmSize + hmTile.y;
-				let tile = pallet[tilemap[i]];
+				let tile = mapData.pallet[mapData.tilemap[i]];
 				placeTerrain(x, y, tile);
 
 				if (func)