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# Sample Python/Pygame Programs
# Simpson College Computer Science
# http://cs.simpson.edu
 
import pygame
import random

# Define some colors
black    = (   0,   0,   0)
white    = ( 255, 255, 255)
red      = ( 255,   0,   0)
 
# This class represents the ball        
# It derives from the "Sprite" class in Pygame
class Block(pygame.sprite.Sprite):
     
    # Constructor. Pass in the color of the block, 
    # and its x and y position
    def __init__(self, color, filename):
        # Call the parent class (Sprite) constructor
        pygame.sprite.Sprite.__init__(self) 
 
        # Create an image of the block, and fill it with a color.
        # This could also be an image loaded from the disk.
        self.image = pygame.image.load(filename).convert()
        self.image.set_colorkey(black)
 
        # Fetch the rectangle object that has the dimensions of the image
        # image.
        # Update the position of this object by setting the values 
        # of rect.x and rect.y
        self.rect = self.image.get_rect()
 
# Initialize Pygame
pygame.init()
 
# Set the height and width of the screen
screen_width=700
screen_height=400
screen=pygame.display.set_mode([screen_width,screen_height])
 
# This is a list of 'sprites.' Each block in the program is
# added to this list. The list is managed by a class called 'RenderPlain.'
block_list = pygame.sprite.RenderPlain()
 
# This is a list of every sprite. All blocks and the player block as well.
all_sprites_list = pygame.sprite.RenderPlain()
player_image="SpielerOben.gif"
 
for i in range(20):
    # This represents a block
    block = Block(black, "gegner.gif")
 
    # Set a random location for the block
    block.rect.x = random.randrange(screen_width)
    block.rect.y = random.randrange(screen_height)
     
    # Add the block to the list of objects
    block_list.add(block)
    all_sprites_list.add(block)
     
# Create a red player block
player = Block(red, player_image)
all_sprites_list.add(player)
 
#Loop until the user clicks the close button.
done=False
 
# Used to manage how fast the screen updates
clock=pygame.time.Clock()
 
score = 0
x_speed=0
y_speed=0
 
# Current position
x_coord=10
y_coord=10
 
# -------- Main Program Loop -----------
while done==False:
    for event in pygame.event.get(): # User did something
        if event.type == pygame.QUIT: # If user clicked close
            done=True # Flag that we are done so we exit this loop
 
    # Clear the screen
    screen.fill(black)
 
    # Get the current mouse position. This returns the position
    # as a list of two numbers.
    if event.type == pygame.KEYDOWN:
            # abhaengig von der Taste, bewegt sich das Objekt
            if event.key == pygame.K_LEFT:
                x_speed=-5
            if event.key == pygame.K_RIGHT:
                x_speed=5
                rotated_image=pygame.transform.rotate(player_image, 90)
                
            if event.key == pygame.K_UP:
                y_speed=-5
            if event.key == pygame.K_DOWN:
                y_speed=5
                 
        # Wenn der User die Taste loslaesst
    if event.type == pygame.KEYUP:
            # If it is an arrow key, reset vector back to zero
            if event.key == pygame.K_LEFT:
                x_speed=0
            if event.key == pygame.K_RIGHT:
                x_speed=0
            if event.key == pygame.K_UP:
                y_speed=0
            if event.key == pygame.K_DOWN:
                y_speed=0
 

     
    x_coord=x_coord+x_speed
    y_coord=y_coord+y_speed

     
    # Fetch the x and y out of the list, 
       # just like we'd fetch letters out of a string.
    # Set the player object to the mouse location
    player.rect.x=x_coord
    player.rect.y=y_coord


        
    # See if the player block has collided with anything.
    blocks_hit_list = pygame.sprite.spritecollide(player, block_list, True)  
     
    # Check the list of collisions.
    if len(blocks_hit_list) > 0:
        score +=len(blocks_hit_list)
        print( score )
         
    # Draw all the spites
    all_sprites_list.draw(screen)
     
    # Limit to 20 frames per second
    clock.tick(20)
 
    # Go ahead and update the screen with what we've drawn.
    pygame.display.flip()
 
pygame.quit()