My 2D platformer has things that can shoot in ANY direction, i.e. 360 degrees. Every buttet has its own struct as follows... typedef struct bullet { float XPos, YPos;(move by XVel and YVel) float XVel, YVel;(stay the same after shooting) float shootVel;(Num of pixels the bullet moves every 10ms) etc.. } The bullets'' position needs to be updated every 10ms by a constant velocity of 6.0f pixels (the shootVel) in any direction. What I need is a way to convert the degree of the initial shooting to the buttets'' x and y velocities. My code is as follows.. at every 10ms { bullet.XPos += bullet.XVel; bullet.YPos += bullet.YVel; bullet->blit(); } So if i shoot at a degree of 70, the xvel would be about 5.7f and the yvel would be about .04f. Or if I shoot at 180 (straight down), XVel = 0, YVel = 6.0f. How do I calculate the required velocities mathematically?

Radians = Degrees * Pi / 180.0;
Velocity.X = Speed * cos(Radians);
Velocity.Y = Speed * -sin(Radians);

That''s the algorithm if 0 degrees is right and 90 degrees is up.

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