{"id":46,"date":"2025-02-16T21:49:34","date_gmt":"2025-02-16T21:49:34","guid":{"rendered":"https:\/\/thatuglydude.com\/?p=46"},"modified":"2025-02-16T21:49:34","modified_gmt":"2025-02-16T21:49:34","slug":"emerald-world-2","status":"publish","type":"post","link":"https:\/\/thatuglydude.com\/index.php\/2025\/02\/16\/emerald-world-2\/","title":{"rendered":"Emerald World #2"},"content":{"rendered":"\n

Thanks to the quick and useful responses on the Celestal Heavens forum<\/a>, I could extract the height map of the Emerald Island to recreate it in Godot.<\/p>\n\n\n\n

In order to do it:<\/p>\n\n\n\n

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  1. I installed Might and Magic 7 vanilla and then the GrayFace’s patch.<\/li>\n\n\n\n
  2. Afterwards, I downloaded the MM7Extension<\/a> and pasted it into the game installation directory.<\/li>\n\n\n\n
  3. Start a new game, Ctrl+F1 to bring up the debug menu. The debug menu accepts Lua scripts. The following suffices to dump the height map data to a CSV format:<\/li>\n<\/ol>\n\n\n\n
    map_file = io.open(\"emerald_height_map.txt\", \"w\")\nfor k in Map.HeightMap do\n  for j in Map.HeightMap[k] do\n    map_file:write(Map.HeightMap[k][j], \",\")\n  end\n  map_file:write(\"\\n\")\nend\nmap_file.close()<\/code><\/pre>\n\n\n\n
    The height map, when copied into LibreCalc with value based colors gave the following, ok-ish looking result:<\/p>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
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    1. I could then use Python to convert the CSV file to an image:<\/li>\n<\/ol>\n\n\n\n
      from PIL import Image\nimport numpy\nmy_data = numpy.genfromtxt(\"emerald_height_map.txt\", delimiter=',')\nim = Image.fromarray(my_data)\nim2 = im.convert(\"L\")\nim2.save(\"emerald.png\")<\/code><\/pre>\n\n\n\n
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      1. Since Godot height maps’<\/a> seem to prefer OpenEXR <\/a>format, I used Gimp to open the PNG file, and simply export as EXR.<\/li>\n\n\n\n
      2. I then followed a concise tutorial<\/a>, starting from the half, to get a collision map, and a mesh for the island.<\/li>\n<\/ol>\n\n\n\n
        The final result, imperfect but showing the map loaded into Godot, looks like this:<\/p>\n\n\n\n
          <\/ol>\n\n\n\n
          \n