[tutorial] spaceship movement: asteroids style

[zylum]

i didnt know about cosd and sind when i wrote this so instead of using

code:

AccX := cos (angle * (Math.PI / 180))*speed AccY := sin (angle * (Math.PI / 180))*speed

you can use

code:

AccX := cosd (angle)*speed AccY := sind (angle)*speed

which is normal trig with angles instead of radians.

also the -90 is there to correct the angle of the spaceship. since the picture is oriented with the ship facing up and the 0th degree points right, you need to draw the pic with -90 degrees to correct this... or i suppose you can make the default angle 90. yeah i should have thought of that before but meh this was a long time ago