lua - Corona SDK shooting relative to players rotation -


so want shoot projectile straight, relative bikes rotation. here code:

function shootbutton:touch(event)     if event.phase == "began"         if g_fired == false              local fireposx= bframe.x +170             local fireposy = bframe.y -20              bullet.y = fireposy             bullet.x = fireposx                bullet:applyforce( 23000, 10, bullet.x, bullet.y ) -- 44000             bullet.isvisible = true             bullet.isbullet = true              return true         end     end end