InPoly

Description:
Checks if a point is inside a polygon defined by multiple vertices.

Parameters:

(px, py, x1, y1, x2, y2, ...)

px, py: The coordinates of the point to be checked.
x1, y1: The coordinates of the first vertex of the polygon as floating points.
x2, y2: The coordinates of the second vertex of the polygon as floating points.
...: The coordinates of subsequent vertices of the polygon.
You need to provide atleast 3 vertices to this function.

Return Values:
Returns true if the point is inside the polygon, otherwise returns false.

Example

local inside = InPoly(3, 4, 0, 0, 6, 0, 6, 6, 0, 6);
if(inside)
    print("The point (3,4) is inside the polygon.");
else
    print("The point (3,4) is outside the polygon.");