CyclopsMC / CyclopsCore / #479033846

23%

master-1.21: 31%

Pull #237

github

Fix infobook crash when hovering the top-left corner on recipe pages

Buttons for empty recipe slots never have their element set, and are
never positioned either, so they keep sitting at (0, 0) with a null
element. RecipeAppendix#renderToolTips calls renderTooltip on all
buttons regardless, so as soon as the mouse entered the top-left 16x16
pixels of the screen while a recipe appendix with an empty slot was
shown, ItemButton and FluidButton dereferenced that null element and
crashed the game.

Almost every recipe appendix has empty slots: any crafting recipe that
does not fill the whole 3x3 grid, and any drying basin or squeezer
recipe without a fluid input or output.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Kzc5LxSaedCXCK4pynhJV3

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