Merge branch 'master' into mvc-legos

build-python-turtle-game-space-invaders-clone/README.md

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build-python-turtle-game-space-invaders-clone/source_code_final/turtle_invaders.py

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+import random
+import time
+import turtle
+
+FRAME_RATE = 30  # Frames per second
+TIME_FOR_1_FRAME = 1 / FRAME_RATE  # Seconds
+
+CANNON_STEP = 10
+LASER_LENGTH = 20
+LASER_SPEED = 20
+ALIEN_SPAWN_INTERVAL = 1.2  # Seconds
+ALIEN_SPEED = 3.5
+
+window = turtle.Screen()
+window.tracer(0)
+window.setup(0.5, 0.75)
+window.bgcolor(0.2, 0.2, 0.2)
+window.title("The Real Python Space Invaders")
+
+LEFT = -window.window_width() / 2
+RIGHT = window.window_width() / 2
+TOP = window.window_height() / 2
+BOTTOM = -window.window_height() / 2
+FLOOR_LEVEL = 0.9 * BOTTOM
+GUTTER = 0.025 * window.window_width()
+
+# Create laser cannon
+cannon = turtle.Turtle()
+cannon.penup()
+cannon.color(1, 1, 1)
+cannon.shape("square")
+cannon.setposition(0, FLOOR_LEVEL)
+cannon.cannon_movement = 0  # -1, 0 or 1 for left, stationary, right
+
+# Create turtle for writing text
+text = turtle.Turtle()
+text.penup()
+text.hideturtle()
+text.setposition(LEFT * 0.8, TOP * 0.8)
+text.color(1, 1, 1)
+
+lasers = []
+aliens = []
+
+
+def draw_cannon():
+    cannon.clear()
+    cannon.turtlesize(1, 4)  # Base
+    cannon.stamp()
+    cannon.sety(FLOOR_LEVEL + 10)
+    cannon.turtlesize(1, 1.5)  # Next tier
+    cannon.stamp()
+    cannon.sety(FLOOR_LEVEL + 20)
+    cannon.turtlesize(0.8, 0.3)  # Tip of cannon
+    cannon.stamp()
+    cannon.sety(FLOOR_LEVEL)
+
+
+def move_left():
+    cannon.cannon_movement = -1
+
+
+def move_right():
+    cannon.cannon_movement = 1
+
+
+def stop_cannon_movement():
+    cannon.cannon_movement = 0
+
+
+def create_laser():
+    laser = turtle.Turtle()
+    laser.penup()
+    laser.color(1, 0, 0)
+    laser.hideturtle()
+    laser.setposition(cannon.xcor(), cannon.ycor())
+    laser.setheading(90)
+    # Move laser to just above cannon tip
+    laser.forward(20)
+    # Prepare to draw the laser
+    laser.pendown()
+    laser.pensize(5)
+
+    lasers.append(laser)
+
+
+def move_laser(laser):
+    laser.clear()
+    laser.forward(LASER_SPEED)
+    # Draw the laser
+    laser.forward(LASER_LENGTH)
+    laser.forward(-LASER_LENGTH)
+
+
+def create_alien():
+    alien = turtle.Turtle()
+    alien.penup()
+    alien.turtlesize(1.5)
+    alien.setposition(
+        random.randint(
+            int(LEFT + GUTTER),
+            int(RIGHT - GUTTER),
+        ),
+        TOP,
+    )
+    alien.shape("turtle")
+    alien.setheading(-90)
+    alien.color(random.random(), random.random(), random.random())
+    aliens.append(alien)
+
+
+def remove_sprite(sprite, sprite_list):
+    sprite.clear()
+    sprite.hideturtle()
+    window.update()
+    sprite_list.remove(sprite)
+    turtle.turtles().remove(sprite)
+
+
+# Key bindings
+window.onkeypress(move_left, "Left")
+window.onkeypress(move_right, "Right")
+window.onkeyrelease(stop_cannon_movement, "Left")
+window.onkeyrelease(stop_cannon_movement, "Right")
+window.onkeypress(create_laser, "space")
+window.onkeypress(turtle.bye, "q")
+window.listen()
+
+draw_cannon()
+
+# Game loop
+alien_timer = 0
+game_timer = time.time()
+score = 0
+game_running = True
+while game_running:
+    timer_this_frame = time.time()
+
+    time_elapsed = time.time() - game_timer
+    text.clear()
+    text.write(
+        f"Time: {time_elapsed:5.1f}s\nScore: {score:5}",
+        font=("Courier", 20, "bold"),
+    )
+    # Move cannon
+    new_x = cannon.xcor() + CANNON_STEP * cannon.cannon_movement
+    if LEFT + GUTTER <= new_x <= RIGHT - GUTTER:
+        cannon.setx(new_x)
+        draw_cannon()
+    # Move all lasers
+    for laser in lasers.copy():
+        move_laser(laser)
+        # Remove laser if it goes off screen
+        if laser.ycor() > TOP:
+            remove_sprite(laser, lasers)
+            break
+        # Check for collision with aliens
+        for alien in aliens.copy():
+            if laser.distance(alien) < 20:
+                remove_sprite(laser, lasers)
+                remove_sprite(alien, aliens)
+                score += 1
+                break
+    # Spawn new aliens when time interval elapsed
+    if time.time() - alien_timer > ALIEN_SPAWN_INTERVAL:
+        create_alien()
+        alien_timer = time.time()
+
+    # Move all aliens
+    for alien in aliens:
+        alien.forward(ALIEN_SPEED)
+        # Check for game over
+        if alien.ycor() < FLOOR_LEVEL:
+            game_running = False
+            break
+
+    time_for_this_frame = time.time() - timer_this_frame
+    if time_for_this_frame < TIME_FOR_1_FRAME:
+        time.sleep(TIME_FOR_1_FRAME - time_for_this_frame)
+    window.update()
+
+splash_text = turtle.Turtle()
+splash_text.hideturtle()
+splash_text.color(1, 1, 1)
+splash_text.write("GAME OVER", font=("Courier", 40, "bold"), align="center")
+turtle.done()

build-python-turtle-game-space-invaders-clone/source_code_step_1/turtle_invaders.py

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+import turtle
+
+window = turtle.Screen()
+window.setup(0.5, 0.75)
+window.bgcolor(0.2, 0.2, 0.2)
+window.title("The Real Python Space Invaders")
+
+LEFT = -window.window_width() / 2
+RIGHT = window.window_width() / 2
+TOP = window.window_height() / 2
+BOTTOM = -window.window_height() / 2
+FLOOR_LEVEL = 0.9 * BOTTOM
+
+# Create laser cannon
+cannon = turtle.Turtle()
+cannon.penup()
+cannon.color(1, 1, 1)
+cannon.shape("square")
+cannon.setposition(0, FLOOR_LEVEL)
+
+# Draw cannon
+cannon.turtlesize(1, 4)  # Base
+cannon.stamp()
+cannon.sety(FLOOR_LEVEL + 10)
+cannon.turtlesize(1, 1.5)  # Next tier
+cannon.stamp()
+cannon.sety(FLOOR_LEVEL + 20)
+cannon.turtlesize(0.8, 0.3)  # Tip of cannon
+cannon.stamp()
+cannon.sety(FLOOR_LEVEL)
+
+turtle.done()

build-python-turtle-game-space-invaders-clone/source_code_step_2/turtle_invaders.py

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+import turtle
+
+CANNON_STEP = 10
+
+window = turtle.Screen()
+window.tracer(0)
+window.setup(0.5, 0.75)
+window.bgcolor(0.2, 0.2, 0.2)
+window.title("The Real Python Space Invaders")
+
+LEFT = -window.window_width() / 2
+RIGHT = window.window_width() / 2
+TOP = window.window_height() / 2
+BOTTOM = -window.window_height() / 2
+FLOOR_LEVEL = 0.9 * BOTTOM
+GUTTER = 0.025 * window.window_width()
+
+# Create laser cannon
+cannon = turtle.Turtle()
+cannon.penup()
+cannon.color(1, 1, 1)
+cannon.shape("square")
+cannon.setposition(0, FLOOR_LEVEL)
+
+
+def draw_cannon():
+    cannon.clear()
+    cannon.turtlesize(1, 4)  # Base
+    cannon.stamp()
+    cannon.sety(FLOOR_LEVEL + 10)
+    cannon.turtlesize(1, 1.5)  # Next tier
+    cannon.stamp()
+    cannon.sety(FLOOR_LEVEL + 20)
+    cannon.turtlesize(0.8, 0.3)  # Tip of cannon
+    cannon.stamp()
+    cannon.sety(FLOOR_LEVEL)
+    window.update()
+
+
+def move_left():
+    new_x = cannon.xcor() - CANNON_STEP
+    if new_x >= LEFT + GUTTER:
+        cannon.setx(new_x)
+        draw_cannon()
+
+
+def move_right():
+    new_x = cannon.xcor() + CANNON_STEP
+    if new_x <= RIGHT - GUTTER:
+        cannon.setx(new_x)
+        draw_cannon()
+
+
+window.onkeypress(move_left, "Left")
+window.onkeypress(move_right, "Right")
+window.onkeypress(turtle.bye, "q")
+window.listen()
+
+draw_cannon()
+
+turtle.done()

build-python-turtle-game-space-invaders-clone/source_code_step_3/turtle_invaders.py

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+import turtle
+
+CANNON_STEP = 10
+LASER_LENGTH = 20
+LASER_SPEED = 10
+
+window = turtle.Screen()
+window.tracer(0)
+window.setup(0.5, 0.75)
+window.bgcolor(0.2, 0.2, 0.2)
+window.title("The Real Python Space Invaders")
+
+LEFT = -window.window_width() / 2
+RIGHT = window.window_width() / 2
+TOP = window.window_height() / 2
+BOTTOM = -window.window_height() / 2
+FLOOR_LEVEL = 0.9 * BOTTOM
+GUTTER = 0.025 * window.window_width()
+
+# Create laser cannon
+cannon = turtle.Turtle()
+cannon.penup()
+cannon.color(1, 1, 1)
+cannon.shape("square")
+cannon.setposition(0, FLOOR_LEVEL)
+
+lasers = []
+
+
+def draw_cannon():
+    cannon.clear()
+    cannon.turtlesize(1, 4)  # Base
+    cannon.stamp()
+    cannon.sety(FLOOR_LEVEL + 10)
+    cannon.turtlesize(1, 1.5)  # Next tier
+    cannon.stamp()
+    cannon.sety(FLOOR_LEVEL + 20)
+    cannon.turtlesize(0.8, 0.3)  # Tip of cannon
+    cannon.stamp()
+    cannon.sety(FLOOR_LEVEL)
+
+
+def move_left():
+    new_x = cannon.xcor() - CANNON_STEP
+    if new_x >= LEFT + GUTTER:
+        cannon.setx(new_x)
+        draw_cannon()
+
+
+def move_right():
+    new_x = cannon.xcor() + CANNON_STEP
+    if new_x <= RIGHT - GUTTER:
+        cannon.setx(new_x)
+        draw_cannon()
+
+
+def create_laser():
+    laser = turtle.Turtle()
+    laser.penup()
+    laser.color(1, 0, 0)
+    laser.hideturtle()
+    laser.setposition(cannon.xcor(), cannon.ycor())
+    laser.setheading(90)
+    # Move laser to just above cannon tip
+    laser.forward(20)
+    # Prepare to draw the laser
+    laser.pendown()
+    laser.pensize(5)
+
+    lasers.append(laser)
+
+
+def move_laser(laser):
+    laser.clear()
+    laser.forward(LASER_SPEED)
+    # Draw the laser
+    laser.forward(LASER_LENGTH)
+    laser.forward(-LASER_LENGTH)
+
+
+# Key bindings
+window.onkeypress(move_left, "Left")
+window.onkeypress(move_right, "Right")
+window.onkeypress(create_laser, "space")
+window.onkeypress(turtle.bye, "q")
+window.listen()
+
+draw_cannon()
+
+# Game loop
+while True:
+    # Move all lasers
+    for laser in lasers.copy():
+        move_laser(laser)
+        # Remove laser if it goes off screen
+        if laser.ycor() > TOP:
+            laser.clear()
+            laser.hideturtle()
+            lasers.remove(laser)
+            turtle.turtles().remove(laser)
+    window.update()
+
+turtle.done()