{"id":64,"date":"2025-07-14T15:39:33","date_gmt":"2025-07-14T15:39:33","guid":{"rendered":"https:\/\/blogs.scummvm.org\/prime\/?p=64"},"modified":"2025-07-14T15:40:26","modified_gmt":"2025-07-14T15:40:26","slug":"week-6-efh-keymapper-and-pr-cleanups","status":"publish","type":"post","link":"https:\/\/blogs.scummvm.org\/prime\/2025\/07\/14\/week-6-efh-keymapper-and-pr-cleanups\/","title":{"rendered":"Week 6: EFH Keymapper and PR Cleanups"},"content":{"rendered":"

This week, I focused on implementing keymapper support for the Escape from Hell<\/em> (EFH) engine and addressing feedback on my previous PRs. I also had three of my earlier PRs merged: Tetraedge<\/strong><\/a>, Sword25<\/strong><\/a>, and Teenagent<\/strong><\/a>.<\/p>\n

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EFH Engine<\/h3>\n

EFH was by far the most involved keymapper implementation I\u2019ve done so far. Unlike other engines, EFH is controlled entirely via the keyboard\u2014there\u2019s no mouse support at all. This meant that without a proper keymapper, the game was essentially unplayable on devices without physical keyboards.<\/p>\n

I started by listing out all the keys used in various gameplay scenarios and organizing them into 11 distinct keymaps<\/strong>. To make switching between these keymaps easier, I wrote a helper function that takes an enum and switches the keymapper context accordingly.\"\"<\/p>\n

What made this implementation even trickier was that a previous contributor had partially implemented keymapper support\u2014mainly for movement and a few other actions. While their work gave me a helpful starting point, I noticed a few issues:<\/p>\n