```"""
Sample Python/Pygame Programs
Simpson College Computer Science
http://simpson.edu/computer-science/
"""

import pygame

# Define some colors
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 255, 0)
RED = (255, 0, 0)

def draw_stick_figure(screen, x, y):
pygame.draw.ellipse(screen, BLACK, [1 + x, y, 10, 10], 0)

# Legs
pygame.draw.line(screen, BLACK, [5 + x, 17 + y], [10 + x, 27 + y], 2)
pygame.draw.line(screen, BLACK, [5 + x, 17 + y], [x, 27 + y], 2)

# Body
pygame.draw.line(screen, RED, [5 + x, 17 + y], [5 + x, 7 + y], 2)

# Arms
pygame.draw.line(screen, RED, [5 + x, 7 + y], [9 + x, 17 + y], 2)
pygame.draw.line(screen, RED, [5 + x, 7 + y], [1 + x, 17 + y], 2)

# Setup
pygame.init()

# Set the width and height of the screen [width,height]
size = [700, 500]
screen = pygame.display.set_mode(size)

pygame.display.set_caption("My Game")

# Loop until the user clicks the close button.
done = False

# Used to manage how fast the screen updates
clock = pygame.time.Clock()

# Hide the mouse cursor
pygame.mouse.set_visible(0)

# Speed in pixels per frame
x_speed = 0
y_speed = 0

# Current position
x_coord = 10
y_coord = 10

# -------- Main Program Loop -----------
while not done:
# --- Event Processing
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
# User pressed down on a key

elif event.type == pygame.KEYDOWN:
# Figure out if it was an arrow key. If so
if event.key == pygame.K_LEFT:
x_speed = -3
elif event.key == pygame.K_RIGHT:
x_speed = 3
elif event.key == pygame.K_UP:
y_speed = -3
elif event.key == pygame.K_DOWN:
y_speed = 3

# User let up on a key
elif event.type == pygame.KEYUP:
# If it is an arrow key, reset vector back to zero
if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
x_speed = 0
elif event.key == pygame.K_UP or event.key == pygame.K_DOWN:
y_speed = 0

# --- Game Logic

# Move the object according to the speed vector.
x_coord = x_coord + x_speed
y_coord = y_coord + y_speed

# --- Drawing Code

# First, clear the screen to WHITE. Don't put other drawing commands
# above this, or they will be erased with this command.
screen.fill(WHITE)

draw_stick_figure(screen, x_coord, y_coord)

# Go ahead and update the screen with what we've drawn.
pygame.display.flip()

# Limit frames per second
clock.tick(60)

# Close the window and quit.
pygame.quit()

```
﻿