Example #1
0
        void ApplyCollision(Collision collision)
        {
            model.player.CopyFrom(copyCircle);


            Vector c = model.player.center;
            Vector d;

            if (Collision.Type.Corner == collision.type)
            {
                d = Geom.GetNearestPoint(collision.line, model.player.center);
            }
            else
            {
                d = Geom.GetCrossPosition(c, collision.line);
            }

            /* view.SetDebugNormal(new Line(d, new Vector(c))); */

            Vector normal    = Geom.Normalize(Geom.Sub(c, d));
            float  dv        = -2.0f * Geom.Dot(model.player.velocity, normal);
            Vector normalDV  = Geom.Mul(normal, dv);
            Vector reflected = Geom.Sum(normalDV, model.player.velocity);


            model.player.velocity.y = reflected.y * FADE_Y_INDEX;
            model.player.velocity.x = reflected.x * FADE_X_INDEX;
        }
Example #2
0
        public static bool PointOnLine(Vector point, Line line)
        {
            Vector a, b;

            Vector ap = Geom.Sub(point, line.a);
            Vector ab = Geom.Sub(line.b, line.a);

            // colinear check
            if (Geom.Mul(ap, ab) != 0)
            {
                return(false);
            }


            // check x
            if (line.a.x < line.b.x)
            {
                a = line.a;
                b = line.b;
            }
            else
            {
                a = line.b;
                b = line.a;
            }

            if (point.x < a.x || point.x > b.x)
            {
                return(false);
            }

            // check y
            if (line.a.y < line.b.y)
            {
                a = line.a;
                b = line.b;
            }
            else
            {
                a = line.b;
                b = line.a;
            }

            if (point.y < a.y || point.y > b.y)
            {
                return(false);
            }

            return(true);
        }