Last week ended with detection and extraction finally sorted, and a promise that testing begins. This week I made good on it \u2014 I sat down and actually played through D\u00e9j\u00e0 Vu<\/i>, mouse in hand, watching for anything that felt off. It turns out playing a game from start to finish is the best bug report you can write, and D\u00e9j\u00e0 Vu<\/i> handed me a nice little pile of them.<\/p>\nCleaning up the Clean Up<\/h2>\n
The The output console at the bottom of the screen was only showing the last line of a longer message \u2014 the rest scrolled off before you could read it. A small padding overshoot in the auto-scroll was to blame. Now the whole message stays visible.<\/p>\n While the engine chewed on a command, the screen just sat there, making it look frozen. A classic Mac touch fixed this: I show the watch cursor while a command is being processed, so it’s clear the game is working and not stuck.<\/p>\n This was my favourite one. Animations \u2014 the cab driver turning his head, the “BOOM” flash when you fire a gun \u2014 were blowing past almost instantly, when they should linger for a second or two. The culprit was the script Not everything landed. The elevator doors still animate too fast, and I spent a good while trying to page the console text like the original’s “Click to continue” prompt. Both run into the same wall: MacVenture only draws a fully consistent screen at the end of its main loop, and any attempt to draw mid-script trips over half-built windows and invalid rectangles. So for now those two stay on the list \u2014 the right fix needs the engine’s proper animation path, not a quick hack.<\/p>\n There are still a few small things left to polish in D\u00e9j\u00e0 Vu<\/i>, but it’s playable from start to finish now, which feels great. So it’s time to move on: next up I’m starting on D\u00e9j\u00e0 Vu II<\/i>, playing it through the same way and fixing whatever surfaces. I’ll also keep the elevator-door animation and the “Click to continue” console sync on the list, to come back to through the engine’s proper update path.<\/p>\n As always, thanks to my mentors for the steady guidance and patience \u2014 onward to D\u00e9j\u00e0 Vu II<\/i>!<\/p>\n","protected":false},"excerpt":{"rendered":" Last week ended with detection and extraction finally sorted, and a promise that testing begins. This week I made good on it \u2014 I sat down and actually played through D\u00e9j\u00e0 Vu, mouse in hand, watching for anything that felt off. It turns out playing a game from start to finish is the best bug […]<\/p>\n","protected":false},"author":31,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-88","post","type-post","status-publish","format-standard","hentry","category-gsoc-2026"],"_links":{"self":[{"href":"https:\/\/blogs.scummvm.org\/andy\/wp-json\/wp\/v2\/posts\/88","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.scummvm.org\/andy\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.scummvm.org\/andy\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.scummvm.org\/andy\/wp-json\/wp\/v2\/users\/31"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.scummvm.org\/andy\/wp-json\/wp\/v2\/comments?post=88"}],"version-history":[{"count":2,"href":"https:\/\/blogs.scummvm.org\/andy\/wp-json\/wp\/v2\/posts\/88\/revisions"}],"predecessor-version":[{"id":90,"href":"https:\/\/blogs.scummvm.org\/andy\/wp-json\/wp\/v2\/posts\/88\/revisions\/90"}],"wp:attachment":[{"href":"https:\/\/blogs.scummvm.org\/andy\/wp-json\/wp\/v2\/media?parent=88"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.scummvm.org\/andy\/wp-json\/wp\/v2\/categories?post=88"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.scummvm.org\/andy\/wp-json\/wp\/v2\/tags?post=88"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Special \u2192 Clean Up<\/code> menu action, which is supposed to tidily arrange the items inside a window, was throwing them outside the window instead \u2014 leaving the item boxes looking empty. The items were never actually lost, it was a redraw bug: the code was mixing absolute screen coordinates with window-relative ones. Once both sides spoke the same coordinate system, Clean Up went back to doing exactly what its name promises.<\/p>\nReading to the end<\/h2>\n
A watch while you wait<\/h2>\n
Animations at the right speed<\/h2>\n
SLEEP<\/code> opcode, which computed its delay as (ticks \/ 60) * 1000<\/code>. Because the division happened first, any pause shorter than a second was truncated straight to zero. Swapping it to (ticks * 1000) \/ 60<\/code> (and guarding against negative values that would otherwise wrap into an enormous delay) brought every animation back to its intended pace.<\/p>\nThe ones that got away<\/h2>\n
Next week<\/h2>\n