Writing

Notes from building the packs. Mostly the parts that were harder than expected, written so they are useful to someone who never buys anything.

• Nine-slice UI in Unity: why a panel stretches wrong

  How sliced sprites really scale, the three rules the art has to follow, and the four Unity settings behind most blurry or broken panels.

• One white icon, five button states

  How Image colour and Button tint multiply, why UI icons ship white, and when a black set is the only thing that looks clean.

• Why an auto-tiling terrain set has exactly 47 tiles

  Where the number comes from, why the diagonal neighbours usually do not matter, and why the lookup table is the part worth shipping.

• A seamless-texture test that can actually fail

  The obvious seam test passes textures with visible seams. Measuring the join against the texture's own local contrast does not.