[knuckleslee]

Status

Merge test done: this branch merged into main 0.10.16 and run in a full game session (see Tested). main has since moved to 0.10.17; GitHub reports this PR as mergeable.

What

On an ultrawide window, the menus' ring is wrong in three ways:

• the selected (hovered) item is drawn much too narrow;
• the hand cursor has to be moved closer to the middle of the screen than the item looks to select it;
• the Back button is selected about 300 px to the left of where it is drawn.

The same happens in a race's pause menu (the ring and its widgets).

Why

The title turns a 3D position into a point of its 1280x720 layout with two functions: 8226CB10 (the camera in the title's services) and 823F18D0 (a camera given by the caller). They take the point through the camera's matrix, divide by w and map it with the constants 640 and 360. With the wide frame's camera (its aspect is the frame's) the same normalized x covers k times more of the layout than 640 of it, which is where the GPU draws the ring; in the layout the items come out k times too close to its middle, so the selected item is drawn too narrow and the cursor hit area is where the item is not.

Measured with a 16:9 run of the same menu: the selected item is at x = 847, 261 wide; on the wide frame the title computes 709 and 87 wide (k = 3.0 at 7680x1440), and the hand cursor selected it at x about 600 to 750.

Fix

In game_patches.cpp the x results of both functions are stretched about 640 by k, the camera's aspect over 16:9, read from the camera's own matrix (the lengths of its x and y columns' first three entries). A camera that is 16:9 already reads k = 1 and is left alone. Only in the wide mode, in the menus' 1280-wide view, and in a race only for the pause menu's ring and widgets (the race HUD is placed by other means and is not touched). Notes in docs/main-menu.md.

Tested

On Windows 10, a 7680x1440 window (aspect auto), the hand cursor:

• main menu: the hovered item is round and where it is drawn, and the cursor selects it where it looks;
• Back and the confirm arrow: selected where they are drawn;
• a race's pause menu: items not narrowed, cursor selects where it looks, race HUD unchanged.

Full game session with this branch merged into main 0.10.16: the menus and the pause menu behave as above, and a 16:9 window's menus are unchanged (checked).

Not tested: a two-player race (I could not set one up), the pre-race calibration screen, and other aspect ratios than 32:9 and 16:9 (the camera aspect is read, not assumed, but I have only looked at those two).

🤖 Generated with Claude Code

[YuutaTsubasa]

@knuckleslee Thank you! This is in v0.10.22. We could only check that 16:9 menus are unchanged here, so your 32:9 test is the one that covers the fix.