Allow heightmaps to be 8 times as high by lessening precisions. Includes conversion script and modified standard maps. Bump the map version number. Fixes #3112

This was SVN commit r16478.

binaries/data/mods/public/maps/random/belgian_uplands.js

@@ -123,7 +123,7 @@ function getHeightErrosionedReliefmap(reliefmap, strength)
 //////////
 
 // Set target min and max height depending on map size to make average stepness the same on all map sizes
-var heightRange = {"min": MIN_HEIGHT * mapSize / 512, "max": MAX_HEIGHT * mapSize / 512};
+var heightRange = {"min": MIN_HEIGHT * mapSize / 8192, "max": MAX_HEIGHT * mapSize / 8192};
 
 // Set average water coverage
 var averageWaterCoverage = 1/3; // NOTE: Since errosion is not predictable actual water coverage might differ much with the same value

binaries/data/mods/public/maps/random/rmgen/library.js

@@ -8,7 +8,7 @@ const TWO_PI = 2 * Math.PI;
 const TERRAIN_SEPARATOR = "|";
 const SEA_LEVEL = 20.0;
 const CELL_SIZE = 4;
-const HEIGHT_UNITS_PER_METRE = 732;
+const HEIGHT_UNITS_PER_METRE = 92;
 const MIN_MAP_SIZE = 128;
 const MAX_MAP_SIZE = 512;
 const FALLBACK_CIV = "athen";

binaries/data/mods/public/maps/random/schwarzwald.js

@@ -533,7 +533,7 @@ function rectangularSmoothToHeight(center, dx, dy, targetHeight, strength, heigh
 ////////////////
 
 // Set target min and max height depending on map size to make average steepness about the same on all map sizes
-var heightRange = {'min': MIN_HEIGHT * (g_Map.size + 512) / 1024, 'max': MAX_HEIGHT * (g_Map.size + 512) / 1024, 'avg': ((MIN_HEIGHT * (g_Map.size + 512) / 1024)+(MAX_HEIGHT * (g_Map.size + 512) / 1024))/2};
+var heightRange = {'min': MIN_HEIGHT * (g_Map.size + 512) / 8192, 'max': MAX_HEIGHT * (g_Map.size + 512) / 8192, 'avg': (MIN_HEIGHT * (g_Map.size + 512) +MAX_HEIGHT * (g_Map.size + 512))/16384};
 
 // Set average water coverage
 var averageWaterCoverage = 1/5; // NOTE: Since erosion is not predictable actual water coverage might vary much with the same values