Well, It's all concerning this
game, so to get the big picture of what i'm talking about play the applet addressed there (btw, it takes a lot
to load). The 4 white dots on the ship are "hot spots" for a bounding rectangle collision detection, you'll see it is far from acurate.
Collision detection is a quite important part of the game, as far as it's the most frecuent way for dying. In Midp1 i can't (without writing a decoder miself) get the pixel data from an image, so pixel-perfect cd is seldom an option (despite it will seriously hit most devices performance).
Am i wrong about pixel-perfect cd? What other way may i take in consideration?