require "../../src/engine/vessel"

describe Vessel do
  it "complete station scenario" do
    body = Gravity::MovingBody(2).new(mass: 1_000_000.0)
    gfield = Gravity::Field(2).zero
    v = Vessel(2).new(name: "Starbird", gravity_body: body, gravity_field: gfield)
    v.stations.keys.includes?(:pilot).should be_true

    rotation = 0
    acceleration = 0
    v.stations[:pilot] << Vessel::Order(2).new(priority: 3, group: :rotation) { rotation += 1 }
    v.stations[:pilot] << Vessel::Order(2).new(priority: -1, group: :rotation) { rotation += 2 }
    v.stations[:pilot] << Vessel::Order(2).new(priority: 1, group: :acceleration) { acceleration += 1 }
    v.stations[:pilot] << Vessel::Order(2).new(priority: 2, group: :acceleration) { acceleration += 2 }
    v.stations[:pilot] << Vessel::Order(2).new(priority: 0, group: :acceleration) { acceleration += 4 }

    v.stations[:pilot].orders[:acceleration].size.should eq(3)
    executed = v.stations[:pilot].execute_orders!
    executed.size.should eq(2)
    executed[0].group.should eq(:rotation)
    executed[0].priority.should eq(3)
    executed[1].group.should eq(:acceleration)
    executed[1].priority.should eq(2)
    rotation.should eq(1)
    acceleration.should eq(2)

    v.stations[:pilot].orders[:acceleration].size.should eq(2)
    executed = v.stations[:pilot].execute_orders!
    executed.size.should eq(2)
    rotation.should eq(3)
    acceleration.should eq(3)

    v.stations[:pilot].orders[:acceleration].size.should eq(1)
    executed = v.stations[:pilot].execute_orders!
    executed.size.should eq(1)
    rotation.should eq(3)
    acceleration.should eq(7)

    v.stations[:pilot].orders[:acceleration].size.should eq(0)
    executed = v.stations[:pilot].execute_orders!
    executed.size.should eq(0)

    v.stations[:pilot] << Vessel::Order(2).new(priority: 1, group: :acceleration) { acceleration += 1 }
    v.stations[:pilot] << Vessel::Order(2).new(priority: 2, group: :acceleration) { |o| o.station.clear_next!(o)  }
    v.stations[:pilot].orders[:acceleration].size.should eq(2)
    executed = v.stations[:pilot].execute_orders!
    v.stations[:pilot].orders[:acceleration].size.should eq(0)
  end
end