def fireSideEngine(self, s_power, direction, create_particle,
record_metrics):
if self.sensor.sense() == 2 and direction > 0:
record_metrics({"Fs": 0}, "actions")
return None
elif self.sensor.sense() == 1 and direction < 0:
record_metrics({"Fs": 0}, "actions")
return None
dispersion = self.np_random.uniform(-0.1, +0.1)
impulse_pos = side_engine_impulse_position(self.body, direction,
config.SIDE_ENGINE_HEIGHT,
config.SIDE_ENGINE_AWAY)
if self.SIDE_ENGINE_POWER:
p = create_particle(0.7, impulse_pos[0], impulse_pos[1], s_power)
p.coldGas = True
Fx, Fy = engine_impulse(direction * self.SIDE_ENGINE_POWER *
s_power,
self.body.angle,
dispersion=dispersion,
orientation=math.pi / 2)
record_metrics({"Fs": math.sqrt(Fx * Fx + Fy * Fy)}, "actions")
p.ApplyLinearImpulse((Fx, Fy), impulse_pos, True)
self.body.ApplyLinearImpulse((-Fx, -Fy), impulse_pos, True)
def fireMainEngine(self, m_power, alpha, create_particle, record_metrics):
dispersion = self.np_random.uniform(-0.1, +0.1)
impulse_pos = (self.body.position[0], self.body.position[1])
if self.MAIN_ENGINE_POWER:
p = create_particle(
3.5, impulse_pos[0], impulse_pos[1], m_power
) # particles are just a decoration, 3.5 is here to make particle speed adequate
p.coldGas = False
Fx, Fy = engine_impulse(self.MAIN_ENGINE_POWER * m_power,
self.body.angle, alpha, dispersion)
record_metrics({
"Ft": math.sqrt(Fx * Fx + Fy * Fy),
"alpha": alpha
}, "actions")
p.ApplyLinearImpulse((-Fx, -Fy), impulse_pos, True)
self.body.ApplyLinearImpulse((Fx, Fy), impulse_pos, True)
return Fx, Fy, impulse_pos
def test_engine_impulse_edge(self):
Fx, Fy = physics.engine_impulse(0, math.pi, math.pi, math.pi)
expected_Fx = 0
expected_Fy = 0
assert round(Fx, 5) == expected_Fx and round(Fy, 5) == expected_Fy
def test_engine_impulse_90_degree_orientation_with_dispersion(self):
Fx, Fy = physics.engine_impulse(500, 0, 0.1, math.pi / 2)
expected_Fx = 497.50208
expected_Fy = -49.91671
assert round(Fx, 5) == expected_Fx and round(Fy, 5) == expected_Fy
def test_engine_impulse_90_degree_orientation(self):
Fx, Fy = physics.engine_impulse(500, 0, 0, math.pi / 2)
expected_Fx = 500
expected_Fy = 0
assert round(Fx, 5) == expected_Fx and round(Fy, 5) == expected_Fy
def test_engine_impulse_negative_60_degree(self):
Fx, Fy = physics.engine_impulse(424.264068712, -math.pi / 3, 0, 0)
expected_Fx = 367.42346
expected_Fy = 212.13203
assert round(Fx, 5) == expected_Fx and round(Fy, 5) == expected_Fy
def test_engine_impulse_45_degreee_with_dispersion(self):
Fx, Fy = physics.engine_impulse(424.264068712, 0, 0.1,
math.pi / 4 - 0.1)
expected_Fx = 300
expected_Fy = 300
assert round(Fx, 5) == expected_Fx and round(Fy, 5) == expected_Fy
def test_engine_impulse_0_degree(self):
Fx, Fy = physics.engine_impulse(300, 0, 0, 0)
assert Fx == 0 and Fy == 300
