new sprint_demo.py

scripts/gyms/sprint_demo.py

@@ -1,6 +1,6 @@
 import math
 import random
-
+import time
 from agent.Base_Agent import Base_Agent as Agent
 from behaviors.custom.Step.Step import Step
 from world.commons.Draw import Draw
@@ -79,6 +79,7 @@ class sprint(gym.Env):
         self.player.scom.unofficial_move_ball((0, 0, 0))
 
         self.gait: Step_Generator = self.player.behavior.get_custom_behavior_object("Walk").env.step_generator
+        self.last_target_update_time = time.time()
 
     def observe(self, init=False):
         r = self.player.world.robot
@@ -278,12 +279,29 @@ class sprint(gym.Env):
         Draw.clear_all()
         self.player.terminate()
 
+    def change_target(self):
+        original_angle = M.vector_angle(self.walk_rel_target)
+        random_angle_delta = np.random.uniform(-10, 10)
+        new_angle = (original_angle + np.radians(random_angle_delta)) * 3 * math.sin(time.time())
+
+        new_walk_rel_target = np.array([
+            np.cos(new_angle) * self.walk_distance,
+            np.sin(new_angle) * self.walk_distance
+        ])
+
+        self.walk_rel_target = new_walk_rel_target
+
     def step(self, action):
 
         r = (self.
              player.world.robot)
 
         w = self.player.world
+        current_time = time.time()
+        if current_time - self.last_target_update_time > 1:
+            self.change_target()
+            self.last_target_update_time = current_time
+
         internal_dist = np.linalg.norm(self.internal_target)
         action_mult = 1 if internal_dist > 0.2 else (0.7 / 0.2) * internal_dist + 0.3
         self.walk_rel_target = M.rotate_2d_vec(
@@ -292,7 +310,7 @@ class sprint(gym.Env):
         self.walk_rel_orientation = M.vector_angle(self.walk_rel_target) * 0.3
 
         # exponential moving average
-        self.act = 0.6 * self.act + 0.4 * action
+        self.act = 0.7 * self.act + 0.3 * action_mult * 0.7
 
         # execute Step behavior to extract the target positions of each leg (we will override these targets)
         lfy, lfz, rfy, rfz = self.step_generator.get_target_positions(self.step_counter == 0, self.STEP_DUR,
@@ -322,22 +340,22 @@ class sprint(gym.Env):
         self.sync()
         self.step_counter += 1
         obs = self.observe()
+        robot_speed = r.loc_torso_velocity[0]
         direction_error = abs(self.walk_rel_orientation)
         direction_error = min(direction_error, 10)
-        reward = (r.loc_torso_velocity[0] - r.loc_torso_velocity[1] * 0.2) * (1 - direction_error / 10)
+        reward = robot_speed * (1 - direction_error / 10)
         if self.player.behavior.is_ready("Get_Up"):
             self.terminal = True
-
-        elif w.time_local_ms - self.reset_time > 7500 * 2:
+        elif w.time_local_ms - self.reset_time > 30000:
             self.terminal = True
         elif r.loc_torso_position[0] > 14.5:
             self.terminal = True
             reward += 500
+        elif r.loc_torso_position[0] > 0:
+            reward += 3 * r.loc_torso_position[0]
         else:
             self.terminal = False
         return obs, reward, self.terminal, {}
-
-
 class Train(Train_Base):
     def __init__(self, script) -> None:
         super().__init__(script)