func (p *Physics) MoveRocket(rocket *state.Rocket, duration time.Duration) {
t := rocket.Target
if t == nil {
rocket.ShouldRemove = true
return
}
dx := t.X - rocket.X
dy := t.Y - rocket.Y
rocket.Angle = math.Atan2(dy, dx) * RadToDeg
x, y := p.move2d(rocket.X, rocket.Y, rocket.Angle, rocket.Velocity, duration)
rocket.X = x
rocket.Y = y
if collision.Collides(rocket, t) {
rocket.ShouldRemove = true
p.damageVehicle(t, p.BulletDamage*20)
}
}
func TestBox2dRocket(t *testing.T) {
rocket := state.Rocket{
Point: state.Point{X: 10,
Y: 20},
Sized: state.Sized{Width: 15,
Height: 15}}
Convey("Proper Box Rocket", t, func() {
So(rocket.AngleDegrees(), ShouldAlmostEqual, rocket.Angle, .001)
x, y := rocket.Position()
w, h := rocket.Size()
So(x, ShouldAlmostEqual, rocket.X, .001)
So(y, ShouldAlmostEqual, rocket.Y, .001)
So(w, ShouldAlmostEqual, rocket.Height, .001)
So(h, ShouldAlmostEqual, rocket.Width, .001)
})
}