mapping MapPicture

Mapping - Map Picture

Make your map sexy!
Your map should include a preview picture. This picture will be visible from the game menu and from the servers vote screen.

In order to do so:

• Load your map in the game and stay observer
• Use the command r_letterbox -1 in the console to turn off the HUD (not r_letterbox 1 as it'd add top and bottom borders)
• If your map has "waypoint" entities (like CTF or CTS maps), you can hide them with cl_hidewaypoints 1

• You may also want to hide powerups with g_powerups 0, as well as weapons and health and armor items with g_pickup_items 0. You'll need to reload the map with restart for these settings to take effect.

• Turn off jpeg compression with scr_screenshot_jpeg 0 to avoid a double lossy compression (you'll have to compress it to jpg later)
• Take a nice screenshot with F12
• Go to your Xonotic user directory, on the data/screenshot subdirectory. Your user directory location depends on your operating system, more information here.
• Open the generated .tga screenshot with an image editor, e.g. GIMP
• Crop it so that it has a 4:3 ratio, e.g. if resolution is 1366x768 then crop it to 1024x768
• Scale it to 512x512 px (the resulting image should appear vertically stretched)
• Save it (export in Gimp) as a JPG file (~90% quality); other formats like tga and png aren't acceptable because they generally produce much bigger files
• Put it in the same location as the bsp file, with the same name (see next chapter for packaging rules).

Original source of information: https://forums.xonotic.org/showthread.php?tid=6067&pid=75757#pid75757

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