Add model training with graphs and current stats, improve model with better rewarding system

.gitignore

@@ -180,3 +180,4 @@ test*.py
 logs/
 logs
 settings.json
+training_logs

README.md

@@ -1 +1,5 @@
 Fleet Commander is like Space Invaders but you are the enemy instead of the player.
+
+It uses AI (Reinforcement Learning) for the Player, and you, the Enemy has to defeat it.
+
+You can train yourself, or use the default model which comes with the game.

game/play.py

@@ -34,7 +34,7 @@ class Game(arcade.gui.UIView):
     def on_show_view(self):
         super().on_show_view()
 
-        self.back_button = self.anchor.add(arcade.gui.UITextureButton(texture=button_texture, texture_hovered=button_hovered_texture, text='<--', style=button_style, width=100, height=50), anchor_x="left", anchor_y="top")
+        self.back_button = self.anchor.add(arcade.gui.UITextureButton(texture=button_texture, texture_hovered=button_hovered_texture, text='<--', style=button_style, width=100, height=50), anchor_x="left", anchor_y="top", align_x=5, align_y=-5)
         self.back_button.on_click = lambda event: self.main_exit()
 
     def main_exit(self):

game/sprites.py

@@ -33,7 +33,7 @@ class Player(arcade.Sprite): # Not actually the player
 
     def update(self, model: PPO, enemies, bullets, width, height):
         if enemies:
-            nearest_enemy = min(enemies, key=lambda e: abs(e.center_y - self.center_y) + abs(e.center_x - self.center_x))
+            nearest_enemy = min(enemies, key=lambda e: abs(e.center_x - self.center_x))
             enemy_x = (nearest_enemy.center_x - self.center_x) / width
             enemy_y = (nearest_enemy.center_y - self.center_y) / height
         else:

menus/main.py

@@ -55,8 +55,8 @@ class Main(arcade.gui.UIView):
         self.play_button = self.box.add(arcade.gui.UITextureButton(text="Play", texture=button_texture, texture_hovered=button_hovered_texture, width=self.window.width / 2, height=150, style=big_button_style))
         self.play_button.on_click = lambda event: self.play()
 
-        self.train_button = self.box.add(arcade.gui.UITextureButton(text="Train", texture=button_texture, texture_hovered=button_hovered_texture, width=self.window.width / 2, height=150, style=big_button_style))
-        self.train_button.on_click = lambda event: self.train()
+        self.train_model_button = self.box.add(arcade.gui.UITextureButton(text="Train Model", texture=button_texture, texture_hovered=button_hovered_texture, width=self.window.width / 2, height=150, style=big_button_style))
+        self.train_model_button.on_click = lambda event: self.train_model()
 
         self.settings_button = self.box.add(arcade.gui.UITextureButton(text="Settings", texture=button_texture, texture_hovered=button_hovered_texture, width=self.window.width / 2, height=150, style=big_button_style))
         self.settings_button.on_click = lambda event: self.settings()
@@ -68,3 +68,7 @@ class Main(arcade.gui.UIView):
     def settings(self):
         from menus.settings import Settings
         self.window.show_view(Settings(self.pypresence_client))
+
+    def train_model(self):
+        from menus.train_model import TrainModel
+        self.window.show_view(TrainModel(self.pypresence_client))

menus/train_model.py

@@ -1,60 +1,177 @@
-import arcade, arcade.gui
+import arcade, arcade.gui, threading, io, os, time
 
-from utils.constants import button_style, MODEL_SETTINGS
+from utils.constants import button_style, MODEL_SETTINGS, monitor_log_dir
 from utils.preload import button_texture, button_hovered_texture
 
+import matplotlib.pyplot as plt
+import numpy as np
+import pandas as pd
+
+from io import BytesIO
+from PIL import Image
+
 from stable_baselines3 import PPO
-from utils.ml import SpaceInvadersEnv
+from stable_baselines3.common.monitor import Monitor 
+from stable_baselines3.common.logger import configure
+
+from utils.rl import SpaceInvadersEnv
 
 class TrainModel(arcade.gui.UIView):
     def __init__(self, pypresence_client):
+        super().__init__()
+
         self.pypresence_client = pypresence_client
         self.pypresence_client.update(state="Model Training")
 
-        self.current_state = "settings"
-
         self.anchor = self.add_widget(arcade.gui.UIAnchorLayout(size_hint=(1, 1)))
         self.box = self.anchor.add(arcade.gui.UIBoxLayout(space_between=10))
 
-        self.settings = MODEL_SETTINGS.copy()
+        self.settings = {
+            setting: data[0] # default value
+            for setting, data in MODEL_SETTINGS.items()
+        }
+        self.labels = {}
+
+        self.training = False
+        self.training_text = ""
+
+        self.last_progress_update = time.perf_counter()
 
     def on_show_view(self):
         super().on_show_view()
 
-        self.show_menu(self.current_state)
+        self.show_menu()
 
-    def show_menu(self, state):
-        if state == "settings":
-            self.box.add(arcade.gui.UILabel("Settings", font_size=48))
+    def main_exit(self):
+        from menus.main import Main
+        self.window.show_view(Main(self.pypresence_client))
 
-            for setting, data in MODEL_SETTINGS:
-                default, min_value, max_value, step = data 
-                self.box.add(arcade.gui.UILabel(text=f"{setting.replace('_', ' ').capitalize()}: {default}"))
+    def show_menu(self):
+        self.back_button = self.anchor.add(arcade.gui.UITextureButton(texture=button_texture, texture_hovered=button_hovered_texture, text='<--', style=button_style, width=100, height=50), anchor_x="left", anchor_y="top", align_x=5, align_y=-5)
+        self.back_button.on_click = lambda event: self.main_exit()
 
-                slider = self.box.add(arcade.gui.UISlider(value=default, min_value=min_value, max_value=max_value, step=step))
-                slider._render_steps = lambda surface: None
-                slider.on_change = lambda e, key=setting: self.change_value(key, e.new_value)
+        self.box.add(arcade.gui.UILabel("Settings", font_size=36))
 
-            train_button = self.box.add(arcade.gui.UITextureButton(width=self.window.width / 2, height=self.window.height / 10, text="Train", style=button_style, texture=button_texture, texture_hovered=button_hovered_texture))
-            train_button.on_click = lambda e: self.train()
+        for setting, data in MODEL_SETTINGS.items():
+            default, min_value, max_value, step = data
+            label = self.box.add(arcade.gui.UILabel(text=f"{setting.replace('_', ' ').capitalize()}: {default}", font_size=18))
+            
+            slider = self.box.add(arcade.gui.UISlider(value=default, min_value=min_value, max_value=max_value, step=step, width=self.window.width / 2, height=self.window.height / 25))
+            slider._render_steps = lambda surface: None
+            slider.on_change = lambda e, key=setting: self.change_value(key, e.new_value)
+
+            self.labels[setting] = label
+
+        train_button = self.box.add(arcade.gui.UITextureButton(width=self.window.width / 2, height=self.window.height / 10, text="Train", style=button_style, texture=button_texture, texture_hovered=button_hovered_texture))
+        train_button.on_click = lambda e: self.start_training()
 
     def change_value(self, key, value):
-        ...
+        self.labels[key].text = f"{key.replace('_', ' ').capitalize()}: {self.round_near_int(value)}"
+        self.settings[key] = self.round_near_int(value)
+
+    def start_training(self):
+        self.box.clear()
+
+        self.training = True
+
+        self.training_label = self.box.add(arcade.gui.UILabel("No Output yet.", font_size=16, multiline=True, width=self.window.width / 2, height=self.window.height / 2))
+
+        self.plot_image_widget = self.box.add(arcade.gui.UIImage(texture=arcade.Texture.create_empty("empty", (1, 1))))
+        self.plot_image_widget.visible = False
+
+        threading.Thread(target=self.train, daemon=True).start()
+
+    def on_update(self, delta_time):
+        if self.training and os.path.exists(os.path.join("training_logs", "progress.csv")) and time.perf_counter() - self.last_progress_update >= 0.5:
+            self.last_progress_update = time.perf_counter()
+            
+            try:
+                progress_df = pd.read_csv(os.path.join("training_logs", "progress.csv"))
+            except pd.errors.EmptyDataError:
+                return
+            
+            progress_text = ""
+
+            for key, value in progress_df.items():
+                progress_text += f"{key}: {round(value.iloc[-1], 6)}\n"
+
+            self.training_text = progress_text
+
+        if hasattr(self, "training_label"):
+            self.training_label.text = self.training_text
+
+    def round_near_int(self, x, tol=1e-4):
+        nearest = round(x)
+        if abs(x - nearest) < tol:
+            return nearest
+        return x
 
     def train(self):
-        env = SpaceInvadersEnv()
+        os.makedirs(monitor_log_dir, exist_ok=True)
+        env = Monitor(SpaceInvadersEnv(), filename=os.path.join(monitor_log_dir, "monitor.csv"))
+
         model = PPO(
             "MlpPolicy", 
             env, 
-            n_steps=2048,
-            batch_size=64,
-            n_epochs=10,
-            learning_rate=3e-4,
+            n_steps=self.settings["n_steps"],
+            batch_size=self.settings["batch_size"],
+            n_epochs=self.settings["n_epochs"],
+            learning_rate=self.settings["learning_rate"],
             verbose=1,
             device="cpu",
-            gamma=0.99, 
-            ent_coef=0.01,
-            clip_range=0.2
+            gamma=self.settings["gamma"], 
+            ent_coef=self.settings["ent_coef"],
+            clip_range=self.settings["clip_range"],
         )
-        model.learn(1_000_000)
+
+        new_logger = configure(
+            folder=monitor_log_dir, format_strings=["csv"]
+        )
+        
+        model.set_logger(new_logger)
+
+        model.learn(self.settings["learning_steps"])
         model.save("invader_agent")
+
+        self.training = False
+
+        self.plot_results(os.path.join(monitor_log_dir, "monitor.csv"), os.path.join(monitor_log_dir, "progress.csv"))
+
+    def plot_results(self, log_path, loss_log_path):
+        df = pd.read_csv(log_path, skiprows=1)
+
+        fig, axes = plt.subplots(2, 1, figsize=(6, 8), dpi=100)
+
+        loss_df = pd.read_csv(loss_log_path)
+
+        axes[0].plot(np.cumsum(df['l']), df['r'], label='Reward') 
+        axes[0].set_title('PPO Training: Episodic Reward')
+        axes[0].set_xlabel('Total Timesteps')
+        axes[0].set_ylabel('Reward')
+        axes[0].grid(True)
+
+        axes[1].plot(loss_df['time/total_timesteps'], loss_df['train/policy_gradient_loss'], label='Policy Gradient Loss')
+        axes[1].plot(loss_df['time/total_timesteps'], loss_df['train/value_loss'], label='Value Loss')
+        axes[1].plot(loss_df['time/total_timesteps'], loss_df['train/explained_variance'], label='Explained Variance')
+        axes[1].set_title('PPO Training: Loss Functions')
+        axes[1].set_xlabel('Total Timesteps')
+        axes[1].set_ylabel('Loss Value')
+        axes[1].legend()
+        axes[1].grid(True)
+    
+        plt.tight_layout()
+
+        buffer = BytesIO()
+        plt.savefig(buffer, format='png')
+        buffer.seek(0)
+        plt.close(fig)
+
+        plot_texture = arcade.Texture(Image.open(buffer))
+
+        self.plot_image_widget.texture = plot_texture
+        self.plot_image_widget.size_hint = (None, None)
+        self.plot_image_widget.width = plot_texture.width
+        self.plot_image_widget.height = plot_texture.height
+
+        self.plot_image_widget.visible = True
+        self.training_text = "Training finished. Plot displayed."

run.py

@@ -10,7 +10,6 @@ script_dir = os.path.dirname(os.path.abspath(__file__))
 pyglet.resource.path.append(script_dir)
 pyglet.font.add_directory(os.path.join(script_dir, 'assets', 'fonts'))
 
-
 from utils.utils import get_closest_resolution, print_debug_info, on_exception
 from utils.constants import log_dir, menu_background_color
 from menus.main import Main
@@ -18,8 +17,6 @@ from arcade.experimental.controller_window import ControllerWindow
 
 sys.excepthook = on_exception
 
-__builtins__.print = lambda *args, **kwargs: logging.debug(" ".join(map(str, args)))
-
 if not log_dir in os.listdir():
     os.makedirs(log_dir)
 

train.py

@@ -1,20 +0,0 @@
-from stable_baselines3 import PPO
-from utils.ml import SpaceInvadersEnv
-
-env = SpaceInvadersEnv()
-model = PPO(
-    "MlpPolicy", 
-    env, 
-    n_steps=2048,
-    batch_size=64,
-    n_epochs=10,
-    learning_rate=3e-4,
-    verbose=1, 
-    device="cpu", 
-    gamma=0.99, 
-    ent_coef=0.02,
-    clip_range=0.2,
-    gae_lambda=0.95
-)
-model.learn(1_000_000)
-model.save("invader_agent")

utils/constants.py

@@ -12,18 +12,21 @@ PLAYER_ATTACK_SPEED = 0.75
 BULLET_SPEED = 3
 BULLET_RADIUS = 10
 
+# default, min, max, step
 MODEL_SETTINGS = {
     "n_steps": [2048, 256, 8192, 256],
-    "batch_size": 64, 
-    "n_epochs": 10, 
-    "learning_rate": 3e-4,
-    "gamma": 0.99,
-    "ent_coef": 0.01, 
-    "clip_range": 0.2
+    "batch_size": [64, 16, 512, 16],
+    "n_epochs": [10, 1, 50, 1],
+    "learning_rate": [3e-4, 1e-5, 1e-2, 1e-5],
+    "gamma": [0.99, 0.8, 0.9999, 0.001],
+    "ent_coef": [0.01, 0.0, 0.1, 0.001],
+    "clip_range": [0.2, 0.1, 0.4, 0.01],
+    "learning_steps": [500_000, 50_000, 25_000_000, 50_000]
 }
 
 menu_background_color = (30, 30, 47)
 log_dir = 'logs'
+monitor_log_dir = "training_logs"
 discord_presence_id = 1438214877343907881
 
 button_style = {'normal': UITextureButtonStyle(font_name="Roboto", font_color=arcade.color.BLACK), 'hover': UITextureButtonStyle(font_name="Roboto", font_color=arcade.color.BLACK),

utils/rl.py

@@ -13,7 +13,7 @@ class SpaceInvadersEnv(gym.Env):
         self.height = height
         
         self.action_space = gym.spaces.Discrete(3)
-        self.observation_space = gym.spaces.Box(low=-10.0, high=10.0, shape=(9,), dtype=np.float32)
+        self.observation_space = gym.spaces.Box(low=-2.0, high=2.0, shape=(9,), dtype=np.float32)
 
         self.enemies = []
         self.bullets = []
@@ -25,8 +25,14 @@ class SpaceInvadersEnv(gym.Env):
         self.prev_bx = 2.0
         self.steps_since_direction_change = 0
         self.last_direction = 0
+        self.max_steps = 1000
+        self.current_step = 0
 
     def reset(self, seed=None, options=None):
+        if seed is not None:
+            np.random.seed(seed)
+            random.seed(seed)
+
         self.enemies = []
         self.bullets = []
         self.dir_history = []
@@ -36,6 +42,7 @@ class SpaceInvadersEnv(gym.Env):
         self.prev_bx = 2.0
         self.steps_since_direction_change = 0
         self.last_direction = 0
+        self.current_step = 0
 
         start_x = self.width * 0.15
         start_y = self.height * 0.9
@@ -51,7 +58,7 @@ class SpaceInvadersEnv(gym.Env):
     def _nearest_enemy(self):
         if not self.enemies:
             return None
-        return min(self.enemies, key=lambda e: abs(e.center_y - self.player.center_y) + abs(e.center_x - self.player.center_x))
+        return min(self.enemies, key=lambda e: abs(e.center_x - self.player.center_x))
 
     def _lowest_enemy(self):
         if not self.enemies:
@@ -104,18 +111,16 @@ class SpaceInvadersEnv(gym.Env):
         terminated = False
         truncated = False
 
+        self.current_step += 1
+        if self.current_step >= self.max_steps:
+            truncated = True
+
         nearest = self._nearest_enemy()
         if nearest is not None:
             enemy_x = (nearest.center_x - self.player.center_x) / float(self.width)
         else:
             enemy_x = 2.0
 
-        prev_bullet = self._nearest_enemy_bullet()
-        if prev_bullet is not None:
-            prev_bx = (prev_bullet.center_x - self.player.center_x) / float(self.width)
-        else:
-            prev_bx = 2.0
-
         prev_x = self.player.center_x
         current_action_dir = 0
 
@@ -129,12 +134,15 @@ class SpaceInvadersEnv(gym.Env):
             t = time.perf_counter()
             if t - self.last_shot >= PLAYER_ATTACK_SPEED:
                 self.last_shot = t
+                
                 b = Bullet(self.player.center_x, self.player.center_y, 1)
+
                 self.bullets.append(b)
+                
                 if enemy_x != 2.0 and abs(enemy_x) < 0.04:
-                    reward += 8.0
+                    reward += 0.3
                 elif enemy_x != 2.0 and abs(enemy_x) < 0.1:
-                    reward += 3.0
+                    reward += 0.1
 
         if self.player.center_x > self.width:
             self.player.center_x = self.width
@@ -145,8 +153,9 @@ class SpaceInvadersEnv(gym.Env):
 
         if current_action_dir != 0:
             if self.last_direction != 0 and current_action_dir != self.last_direction:
-                if self.steps_since_direction_change < 8:
-                    reward -= 3.0
+                if self.steps_since_direction_change < 3:
+                    reward -= 0.1
+
                 self.steps_since_direction_change = 0
             else:
                 self.steps_since_direction_change += 1
@@ -154,9 +163,9 @@ class SpaceInvadersEnv(gym.Env):
 
         if enemy_x != 2.0:
             if abs(enemy_x) < 0.03:
-                reward += 3.0
+                reward += 0.1
             elif abs(enemy_x) < 0.08:
-                reward += 1.0
+                reward += 0.05
 
         for b in list(self.bullets):
             b.center_y += b.direction_y * BULLET_SPEED
@@ -178,7 +187,7 @@ class SpaceInvadersEnv(gym.Env):
                             self.bullets.remove(b)
                         except ValueError:
                             pass
-                        reward += 25.0
+                        reward += 1.0
                         break
 
         for b in list(self.bullets):
@@ -188,14 +197,14 @@ class SpaceInvadersEnv(gym.Env):
                         self.bullets.remove(b)
                     except ValueError:
                         pass
-                    reward -= 100.0
+                    reward -= 5.0
                     terminated = True
 
         if not self.enemies:
-            reward += 200.0
+            reward += 10.0
             terminated = True
 
-        if self.enemies and random.random() < 0.02:
+        if self.enemies and random.random() < 0.05:
             e = random.choice(self.enemies)
             b = Bullet(e.center_x, e.center_y, -1)
             self.bullets.append(b)
@@ -203,17 +212,14 @@ class SpaceInvadersEnv(gym.Env):
         curr_bullet = self._nearest_enemy_bullet()
         if curr_bullet is not None:
             curr_bx = (curr_bullet.center_x - self.player.center_x) / float(self.width)
-            curr_by = (curr_bullet.center_y - self.player.center_y) / float(self.height)
         else:
             curr_bx = 2.0
-            curr_by = 2.0
 
-        if prev_bx != 2.0 and curr_bx != 2.0:
-            if abs(curr_bx) > abs(prev_bx):
-                reward += 0.3
+        if self.prev_bx != 2.0 and curr_bx != 2.0:
+            if abs(curr_bx) > abs(self.prev_bx):
+                reward += 0.02
 
-        if curr_bx != 2.0 and abs(curr_bx) < 0.08 and curr_by < 0.5:
-            reward -= 0.3
+        reward -= 0.01
 
         obs = self._obs()
         self.prev_bx = curr_bx