I've added collision checking (not to go into the water. Tweaked few lines an ended with 932 bytes :)
@w84death Ah, not <= 512B? I'm curious, what's your size restriction, if any?
@golemwire It was 512b for bootsector. For this game it will be pure DOS. I try to keep it under 1K if possible. 2K if I want to have more maps (40b per map). But lot of this R&D will be used for 512b games in the future.
@w84death That sounds great. I love tiny development!