func newVehicle(id int, context *httpcanvas.Context) *Vehicle {
x := rand.Float64() * context.Width
y := rand.Float64() * context.Height
v := &Vehicle{*newMover(x, y, context),
id}
v.acceleration = noc.RandomPVector(0.75, 1.25)
v.maxSpeed = 4
v.maxForce = 0.25
v.color = "rgba(175, 175, 175, 0.75)"
return v
}
func (self *Mover) Step() {
self.acceleration = noc.RandomPVector(0.75, 1.25)
self.velocity.Add(self.acceleration)
self.velocity.Limit(4)
self.location.Add(self.velocity)
if self.location.X > self.context.Width || self.location.X < 0 {
self.location.X = self.context.Width - self.location.X
// self.velocity.X = -self.velocity.X
}
if self.location.Y > self.context.Height || self.location.Y < 0 {
self.location.Y = self.context.Height - self.location.Y
// self.velocity.Y = -self.velocity.Y
}
}