From b8c69441d5f7a646bb428dfd440db78e913f25de Mon Sep 17 00:00:00 2001
From: erbrown <nobody@makingwithcode.org>
Date: Sun, 14 Dec 2025 20:45:39 -0500
Subject: [PATCH] This code is very different from Unit 1. Unit 1 was very top
 to bottom. This is more object driven. Instead of one loop or code there are
 agents that act to put everything together as a focus of what agent should be
 doing for the game to become a game such as the spaceship, asteroid, asteroid
 spawner are all used to generate the game. This code seems so real and more
 day to day life in my opinion.

---
 __pycache__/asteroid.cpython-313.pyc         | Bin 0 -> 1207 bytes
 __pycache__/asteroid_spawner.cpython-313.pyc | Bin 0 -> 1279 bytes
 __pycache__/spaceship.cpython-313.pyc        | Bin 0 -> 1330 bytes
 asteroid.py                                  |  20 ++++++++++++++++++
 asteroid_spawner.py                          |  15 +++++++++++++
 nav_game.py                                  |   9 ++++++++
 spaceship.py                                 |  21 +++++++++++++++++++
 7 files changed, 65 insertions(+)
 create mode 100644 __pycache__/asteroid.cpython-313.pyc
 create mode 100644 __pycache__/asteroid_spawner.cpython-313.pyc
 create mode 100644 __pycache__/spaceship.cpython-313.pyc

diff --git a/__pycache__/asteroid.cpython-313.pyc b/__pycache__/asteroid.cpython-313.pyc
new file mode 100644
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diff --git a/__pycache__/asteroid_spawner.cpython-313.pyc b/__pycache__/asteroid_spawner.cpython-313.pyc
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diff --git a/asteroid.py b/asteroid.py
index 257354b..1b7fc68 100644
--- a/asteroid.py
+++ b/asteroid.py
@@ -2,3 +2,23 @@
 # ------------
 # By MWC Contributors
 # This module defines an asteroid agent class.
+class Asteroid:
+    character = 'O'
+
+    def __init__(self, position):
+        self.position = position
+
+    def play_turn(self, game):
+        width, height = game.board_size
+
+        if game.turn_number % 1 == 0: 
+            x, y = self.position
+            if y == height - 1: 
+                game.remove_agent(self)
+            else:
+                ship = game.get_agent_by_name('ship')
+                new_position = (x, y + 1)
+                if new_position == ship.position:
+                    game.end()
+                else:
+                    self.position = new_position
\ No newline at end of file
diff --git a/asteroid_spawner.py b/asteroid_spawner.py
index 92e542d..817d0de 100644
--- a/asteroid_spawner.py
+++ b/asteroid_spawner.py
@@ -2,3 +2,18 @@
 # -------------------
 # By MWC Contributors
 # This module defines an AsteroidSpawner agent class.
+from random import randint
+from asteroid import Asteroid
+
+class AsteroidSpawner:
+    display = False
+
+    def play_turn(self, game):
+        width, height = game.board_size
+        game.state['score'] += 1
+        if self.should_spawn_asteroid(game.turn_number):
+            asteroid = Asteroid((randint(0, width - 1), 0))
+            game.add_agent(asteroid)
+
+    def should_spawn_asteroid(self, turn_number):
+        return randint(0, 1000) < turn_number
diff --git a/nav_game.py b/nav_game.py
index 191d83d..06517e9 100644
--- a/nav_game.py
+++ b/nav_game.py
@@ -2,3 +2,12 @@
 # ------------
 # By MWC Contributors
 # This class implements a simple game where a spaceship avoids asteroids.
+from retro.game import Game
+from spaceship import Spaceship
+from asteroid_spawner import AsteroidSpawner
+
+board_size = (25, 25)
+ship = Spaceship(board_size)
+spawner = AsteroidSpawner()
+game = Game([ship, spawner], {"score": 0}, board_size=board_size)
+game.play()
diff --git a/spaceship.py b/spaceship.py
index 9f3552a..57fc54e 100644
--- a/spaceship.py
+++ b/spaceship.py
@@ -2,3 +2,24 @@
 # ------------
 # By MWC Contributors
 # This module defines a spaceship agent class.
+class Spaceship:
+    name = "ship"
+    character = '^'
+    color = "turquoise2"
+
+    def __init__(self, board_size):
+        board_width, board_height = board_size
+        self.position = (board_width // 2, board_height - 1)
+
+    def handle_keystroke(self, keystroke, game):
+        x, y = self.position
+        if keystroke.name in ("KEY_LEFT", "KEY_RIGHT"):
+            if keystroke.name == "KEY_LEFT": 
+                new_position = (x - 1, y)
+            else: 
+                new_position = (x + 1, y)
+            if game.on_board(new_position):
+                if game.is_empty(new_position):
+                    self.position = new_position
+                else:
+                    game.end()
\ No newline at end of file