player.angle = 30
player.speed = 20
player.acceleration = 2
print(player.angle)
local scale_x = math.cos(player.angle)
local scale_y = math.sin(player.angle)

local function acceleratePlayer (event)

if(event.phase=="began") then

player.speed = player.speed + player.acceleration

player.velocity_x = player.speed * scale_x
          player.velocity_y = player.speed * scale_y
          player.x = player.x + player.velocity_x
          player.y = player.y + player.velocity_y
    end
end