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Map Modding Quick Reference

此页面将作为地图 Mod 快速参考指南，帮助 Mod 作者快速找到适合他们选择的图像编辑器的图像导出设置。它还将包含一些方便的指南和注释，用于常见的地图编辑任务。

有关不同地图文件（图像和文本）的完整参考，请访问地图 modding。

地图导出设置

这是在 Europa Universalis IV 中使用地图图像文件时所需地图导出设置的参考指南。

Gimp 导出设置
Map Image Dimensions Image Mode Image Precision Export Settings Notes
heightmap.bmp

（高度图）

Same dimensions as defined in default.map 灰度模式 8 bit integer 默认BMP格式导出，不做任何设置。
world_normal.bmp

（法线贴图）

Half the dimensions defined in default.map RGB模式 8 bit integer 务必在高级选项中选择 "24 bits R8 G8 B8"导出 Guide on how to generate world_normal.bmp
provinces.bmp

（省份地图）

Same dimensions as defined in default.map RGB模式 8 bit integer 务必在高级选项中选择 "24 bits R8 G8 B8"导出
terrain.bmp

rivers.bmp（地形图；河流图）

Same dimensions as defined in default.map 索引模式 8 bit integer 默认BMP格式导出，不做任何设置。
trees.bmp

（树木图）

⅛ the dimensions defined in default.map dimensions (see notes) 索引模式 8 bit integer 默认BMP格式导出，不做任何设置。 The scaling can be whatever you like, but a smaller image creates larger clumps of trees,

and a larger image will create smaller clumps of trees. Vanilla uses a factor of ⅛.

colormap_spring.dds

colormap_autumn.dds colormap_summer.dds colormap_winter.dds colormap_water.dds （四季贴图；水域贴图）

是default.map文件中定义大小的一半。 RGB模式 8 bit integer Compression: None

Format: RGB8

Older versions of GIMP did not support DDS images. If you cannot open or export the DDS file format, first try updating GIMP to the latest version.
Photoshop 导出设置
Map Image Dimensions Image Mode Image Precision Export Settings Notes
heightmap.bmp Same dimensions as defined in default.map Grayscale 8 bit integer
world_normal.bmp Half the dimensions defined in default.map RGB 8 bit integer
provinces.bmp Same dimensions as defined in default.map RGB 8 bit integer
terrain.bmprivers.bmp Same dimensions as defined in default.map Indexed 8 bit integer
trees.bmp ⅛ the dimensions defined in default.map dimensions (see notes) Indexed 8 bit integer The scaling can be whatever you like, but a smaller image creates larger clumps of trees,

and a larger image will create smaller clumps of trees. Vanilla uses a factor of ⅛.

colormap_autumn.dds

colormap_spring.dds

colormap_summer.dds

colormap_water.dds

colormap_winter.dds

Half the dimensions defined in default.map RGB 8 bit integer
Paint.NET 导出设置
Map Image Dimensions Export Settings Notes
heightmap.bmp This file cannot be exported by Paint.NET due to its lack of grayscale BMP support. You may edit this file in Paint.NET and copy it to a program

such as Gimp for exporting and saving.

world_normal.bmp Half the dimensions defined in default.map Dithering: 0
provinces.bmp Same dimensions as defined in default.map Ensure that Bit Depth is set to "24-bit"

when exporting.

terrain.bmp

rivers.bmp

trees.bmp

These files cannot be exported by Paint.NET due to its lack of indexed BMP support. You may edit these files in Paint.NET and copy it to a program

such as Gimp for exporting and saving.

colormap_autumn.dds

colormap_spring.dds

colormap_summer.dds

colormap_water.dds

colormap_winter.dds

Half the dimensions defined in default.map B8G8R8 (Linear, R8G8B8)

法线贴图生成指南

本节将介绍如何从 heightmap.bmp 文件生成 world_normal.bmp 文件。

Gimp 法线贴图生成

这需要 GIMP 2.10 或更高版本

  1. Start by opening your heightmap.bmp file in Gimp
  2. Change the image mode from "Grayscale" to "RGB"
    1. In the top bar, click "Image" -> "Mode" -> "RGB"
  3. Apply the "Normal Map" filter
    1. In the top bar, click "Filter" -> "Generic" -> "Normal Map"
    2. Check the "Flip Y" checkbox
    3. Adjust "Scale" as desired
    4. Click "OK" to apply the filter
  4. Scale the image by half
    1. In the top bar, click "Image" -> "Scale Image..."
    2. Set both the "Width" and "Height" values to half of the defined width and height values for your map
      • Having the proportions linked (connected chain symbol) means you only need to alter one of the values, not both
      • To quickly scale your dimensions in half, simply add /2 to the end of one of your dimension values and press ENTER
    3. Set "Interpolation" to "Cubic"
    4. Press "Scale" to perform the scaling operation
  5. Export the image as world_normal.bmp
    1. In the top bar, click "Image" -> "Export As..."
    2. Change the name from heightmap.bmp to world_normal.bmp. This step is important! If you forget, you may end up overwriting your heightmap.bmp file!
    3. Press "Export" to begin the export
    4. Check the "Advanced Options" -> "24 bits R8 G8 B8" option
    5. Press "Export" to export the image

And you're done!

Miscellaneous

Notes on working with indexed images

Some notes on working with Indexed BMP images. These images are rivers.bmp, terrain.bmp, and trees.bmp. provinces.bmp is technically not an indexed image, but these same principles can be applied to it as well.

  • It's rarely a good idea to create your own indexed images from scratch. Even if you are creating map files for a brand new map, you should create these files by copying from vanilla, then resizing and drawing your map as desired. The reason is that by copying, your image will contain a ready-made colour map built in and ready to go. If you don't do this, you would have to go through the tedious process of manually setting up the colour map of the image.
  • Avoid tools and features that introduce "softness" into the image, since these can introduce extra, undesired colours when each pixels colour has a specific meaning.
    • When scaling any portion of an indexed BMP image (or the whole image), you must not use any interpolation in order to avoid introducing interpolated colours.
    • It's important to only use hard-edged tools while editing indexed BMP images (e.g., pencil, bucket fill, line tool). Soft tools like the Paintbrush or the Airbrush can also introduce interpolated colours.
    • You must also only use hard selection, rather than "feathered" or "softened" selections as these too can introduce interpolated colours into the image.