ellens-alien-game/classes.py

            
                      Original file line number
                      Diff line number
                      Diff line change
                  
    @@ -3,7 +3,7 @@
  
    class Alien:

        """

        Create an Alien object with location x_coordinate and y_coordinate.

        Alien located at given coordinates.

        Attributes

        ----------

    @@ -17,37 +17,74 @@ class Alien:
  
        -------

        hit(): Decrement Alien health by one point.

        is_alive(): Return a boolean for if Alien is alive (if health is > 0).

        teleport(new_x_coordinate, new_y_coordinate): Move Alien object to new coordinates.

        teleport(new_x_coordinate, new_y_coordinate): Move Alien object

                                                      to new coordinates.

        collision_detection(other): Implementation TBD.

        """

        total_aliens_created: int = 0

        def __init__(self, x_coordinate: int, y_coordinate: int):

            """

            Initialize a new Alien at the provided coordinates.

            Sets health to 3, assigns x and y coordinates, and increments

            Alien.total_aliens_created.

            :param x_coordinate: Position on the x-axis.

            :param y_coordinate: Position on the y-axis.

            :return: None

            """

            self.health: int = 3

            self.x_coordinate = x_coordinate

            self.y_coordinate = y_coordinate

            Alien.total_aliens_created += 1

        def is_alive(self):

            """

            Return whether the alien is alive.

            :return: True if health > 0, else False.

            """

            return self.health > 0

        def hit(self):

            """

            Decrement the alien's health by one point.

            :return: None

            """

            self.health -= 1

        def teleport(self, new_x_coordinate, new_y_coordinate):

            """

            Decrement the alien's health by one point.

            :return: None

            """

            self.x_coordinate = new_x_coordinate

            self.y_coordinate = new_y_coordinate

        def collision_detection(self, other):

            pass

            """

            Determine whether this Alien collides with another.

            Implementation TBD; currently returns None.

            :param other: Another Alien or object to check for

                          positional overlap.

            :return: None

            `Source: /ellens-alien-game/classes_test.py`

            """

            pass  # pylint: disable=unnecessary-pass

    def new_aliens_collection(

        alien_start_positions: list[tuple[int, int]],

    ) -> list:

        """

        Creates a list of Alien() objects, given a list of positions (as tuples).

        Create a list of Alien objects from starting positions.

        :param alien_start_positions: given a list of positions

        :return: a list of Alien() objects

solutions/python/ellens-alien-game/1/classes.py

-Original file line number
+Diff line change
@@ -0,0 +1,55 @@
+    """Solution to Ellen's Alien Game exercise."""
+    class Alien:
+        """
+        Create an Alien object with location x_coordinate and y_coordinate.
+        Attributes
+        ----------
+        (class)
+        total_aliens_created: int
+        x_coordinate: int - Position on the x-axis.
+        y_coordinate: int - Position on the y-axis.
+        health: int - Number of health points.
+        Methods
+        -------
+        hit(): Decrement Alien health by one point.
+        is_alive(): Return a boolean for if Alien is alive (if health is > 0).
+        teleport(new_x_coordinate, new_y_coordinate): Move Alien object to new coordinates.
+        collision_detection(other): Implementation TBD.
+        """
+        total_aliens_created: int = 0
+        def __init__(self, x_coordinate: int, y_coordinate: int):
+            self.health: int = 3
+            self.x_coordinate = x_coordinate
+            self.y_coordinate = y_coordinate
+            Alien.total_aliens_created += 1
+        def is_alive(self):
+            return self.health > 0
+        def hit(self):
+            self.health -= 1
+        def teleport(self, new_x_coordinate, new_y_coordinate):
+            self.x_coordinate = new_x_coordinate
+            self.y_coordinate = new_y_coordinate
+        def collision_detection(self, other):
+            pass
+    def new_aliens_collection(
+        alien_start_positions: list[tuple[int, int]],
+    ) -> list:
+        """
+        Creates a list of Alien() objects, given a list of positions (as tuples).
+        :param alien_start_positions: given a list of positions
+        :return: a list of Alien() objects
+        """
+        return list(Alien(pos[0], pos[1]) for pos in alien_start_positions)

solutions/python/ellens-alien-game/2/classes.py

-Original file line number
+Diff line change
@@ -0,0 +1,92 @@
+    """Solution to Ellen's Alien Game exercise."""
+    class Alien:
+        """
+        Alien located at given coordinates.
+        Attributes
+        ----------
+        (class)
+        total_aliens_created: int
+        x_coordinate: int - Position on the x-axis.
+        y_coordinate: int - Position on the y-axis.
+        health: int - Number of health points.
+        Methods
+        -------
+        hit(): Decrement Alien health by one point.
+        is_alive(): Return a boolean for if Alien is alive (if health is > 0).
+        teleport(new_x_coordinate, new_y_coordinate): Move Alien object
+                                                      to new coordinates.
+        collision_detection(other): Implementation TBD.
+        """
+        total_aliens_created: int = 0
+        def __init__(self, x_coordinate: int, y_coordinate: int):
+            """
+            Initialize a new Alien at the provided coordinates.
+            Sets health to 3, assigns x and y coordinates, and increments
+            Alien.total_aliens_created.
+            :param x_coordinate: Position on the x-axis.
+            :param y_coordinate: Position on the y-axis.
+            :return: None
+            """
+            self.health: int = 3
+            self.x_coordinate = x_coordinate
+            self.y_coordinate = y_coordinate
+            Alien.total_aliens_created += 1
+        def is_alive(self):
+            """
+            Return whether the alien is alive.
+            :return: True if health > 0, else False.
+            """
+            return self.health > 0
+        def hit(self):
+            """
+            Decrement the alien's health by one point.
+            :return: None
+            """
+            self.health -= 1
+        def teleport(self, new_x_coordinate, new_y_coordinate):
+            """
+            Decrement the alien's health by one point.
+            :return: None
+            """
+            self.x_coordinate = new_x_coordinate
+            self.y_coordinate = new_y_coordinate
+        def collision_detection(self, other):
+            """
+            Determine whether this Alien collides with another.
+            Implementation TBD; currently returns None.
+            :param other: Another Alien or object to check for
+                          positional overlap.
+            :return: None
+            `Source: /ellens-alien-game/classes_test.py`
+            """
+            pass
+    def new_aliens_collection(
+        alien_start_positions: list[tuple[int, int]],
+    ) -> list:
+        """
+        Create a list of Alien objects from starting positions.
+        :param alien_start_positions: given a list of positions
+        :return: a list of Alien() objects
+        """
+        return list(Alien(pos[0], pos[1]) for pos in alien_start_positions)

Merge from master #227

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Merged

ikostan merged 11 commits into exercism-sync/d44eb51dd99261bc from main

Oct 15, 2025

-Original file line number
+Diff line change
@@ -0,0 +1,55 @@
+    """Solution to Ellen's Alien Game exercise."""
+    class Alien:
+        """
+        Create an Alien object with location x_coordinate and y_coordinate.
+        Attributes
+        ----------
+        (class)
+        total_aliens_created: int
+        x_coordinate: int - Position on the x-axis.
+        y_coordinate: int - Position on the y-axis.
+        health: int - Number of health points.
+        Methods
+        -------
+        hit(): Decrement Alien health by one point.
+        is_alive(): Return a boolean for if Alien is alive (if health is > 0).
+        teleport(new_x_coordinate, new_y_coordinate): Move Alien object to new coordinates.
+        collision_detection(other): Implementation TBD.
+        """
+        total_aliens_created: int = 0
+        def __init__(self, x_coordinate: int, y_coordinate: int):
+            self.health: int = 3
+            self.x_coordinate = x_coordinate
+            self.y_coordinate = y_coordinate
+            Alien.total_aliens_created += 1
+        def is_alive(self):
+            return self.health > 0
+        def hit(self):
+            self.health -= 1
+        def teleport(self, new_x_coordinate, new_y_coordinate):
+            self.x_coordinate = new_x_coordinate
+            self.y_coordinate = new_y_coordinate
+        def collision_detection(self, other):
+            pass
+    def new_aliens_collection(
+        alien_start_positions: list[tuple[int, int]],
+    ) -> list:
+        """
+        Creates a list of Alien() objects, given a list of positions (as tuples).
+        :param alien_start_positions: given a list of positions
+        :return: a list of Alien() objects
+        """
+        return list(Alien(pos[0], pos[1]) for pos in alien_start_positions)

-Original file line number
+Diff line change
@@ -0,0 +1,92 @@
+    """Solution to Ellen's Alien Game exercise."""
+    class Alien:
+        """
+        Alien located at given coordinates.
+        Attributes
+        ----------
+        (class)
+        total_aliens_created: int
+        x_coordinate: int - Position on the x-axis.
+        y_coordinate: int - Position on the y-axis.
+        health: int - Number of health points.
+        Methods
+        -------
+        hit(): Decrement Alien health by one point.
+        is_alive(): Return a boolean for if Alien is alive (if health is > 0).
+        teleport(new_x_coordinate, new_y_coordinate): Move Alien object
+                                                      to new coordinates.
+        collision_detection(other): Implementation TBD.
+        """
+        total_aliens_created: int = 0
+        def __init__(self, x_coordinate: int, y_coordinate: int):
+            """
+            Initialize a new Alien at the provided coordinates.
+            Sets health to 3, assigns x and y coordinates, and increments
+            Alien.total_aliens_created.
+            :param x_coordinate: Position on the x-axis.
+            :param y_coordinate: Position on the y-axis.
+            :return: None
+            """
+            self.health: int = 3
+            self.x_coordinate = x_coordinate
+            self.y_coordinate = y_coordinate
+            Alien.total_aliens_created += 1
+        def is_alive(self):
+            """
+            Return whether the alien is alive.
+            :return: True if health > 0, else False.
+            """
+            return self.health > 0
+        def hit(self):
+            """
+            Decrement the alien's health by one point.
+            :return: None
+            """
+            self.health -= 1
+        def teleport(self, new_x_coordinate, new_y_coordinate):
+            """
+            Decrement the alien's health by one point.
+            :return: None
+            """
+            self.x_coordinate = new_x_coordinate
+            self.y_coordinate = new_y_coordinate
+        def collision_detection(self, other):
+            """
+            Determine whether this Alien collides with another.
+            Implementation TBD; currently returns None.
+            :param other: Another Alien or object to check for
+                          positional overlap.
+            :return: None
+            `Source: /ellens-alien-game/classes_test.py`
+            """
+            pass
+    def new_aliens_collection(
+        alien_start_positions: list[tuple[int, int]],
+    ) -> list:
+        """
+        Create a list of Alien objects from starting positions.
+        :param alien_start_positions: given a list of positions
+        :return: a list of Alien() objects
+        """
+        return list(Alien(pos[0], pos[1]) for pos in alien_start_positions)

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