Talos docs

sprite-map-size

Since next

a sprite's normalImage or emissiveImage, or a tileset's normalImage, is not the size of its picture, so the map was left out and the picture draws flat

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Meaning

a sprite's normalImage or emissiveImage, or a tileset's normalImage, is not the size of its picture, so the map was left out and the picture draws flat

Fix

make the map the size of the image it goes with