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Today I'm tackling action points. Each character has a set amount per turn, and can use them how they please to move/attack/etc. At least in early Fire Emblem games, I was never a fan that characters can or can't move depending on what they've done so far. This is my attempt to clarify that.

See how the 2nd 1 icon has a green corner? That is the goblin sprite down below, the menu itself is a background. The clear corner of the 1 icon is allowing the goblin pixel to push through the bg. The GBA's method for deciding how sprites/bgs combine to form the final pixel is a little primitive.