restructured folder

code/math.lua

@@ -0,0 +1,27 @@
+function math.sign(x)
+   if x<0 then
+     return -1
+   elseif x>0 then
+     return 1
+   else
+     return 0
+   end
+end
+
+function Vector(init_x, init_y, final_x, final_y)
+  local distance_x = final_x - init_x
+  local distance_y = final_y - init_y
+  return {distance_x, distance_y}
+end
+
+function GetVectorValue(vector)
+  return math.sqrt(vector[1] ^ 2 + vector[2] ^ 2)
+end
+
+function GetAngleFromVector(x,y)
+	local reduce = 0
+	if x < 0 then
+		reduce = math.rad(180)
+	end
+	return math.atan(y/x) - reduce
+end