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;
}
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);
}