[Loriel]

otoh if you know the destination you can just take the vector to there, normalise it and then multiply it with how far you want to move

distx = 32 - player.x;
disty = 32 - player.y;
sqrtdist = sqrt(distx^2 + disty^2);
dx = r * distx / sqrtdist;
dy = r * disty / sqrtdist;