function to improve entities moving on collisions and fixed accordingly

made math.round()
changed vector() and fixed accordingly

code/math.lua

@@ -8,20 +8,22 @@ function math.sign(x)
 	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}
+function math.round(x)
+	return math.floor(x+0.5)
+end
+
+function vector(x, y)
+	return {x = x, y = y}
 end
 
 function getVectorValue(vector)
-	return math.sqrt(vector[1] ^ 2 + vector[2] ^ 2)
+	return math.sqrt(vector.x ^ 2 + vector.y ^ 2)
 end
 
-function getAngleFromVector(x,y)
+function getAngleFromVector(vector)
 	local reduce = 0
-	if x < 0 then
+	if vector.x < 0 then
 		reduce = math.rad(180)
 	end
-	return math.atan(y/x) - reduce
+	return math.atan(vector.y/vector.x) - reduce
 end