Module 7 - Section 0 - Snow fall and snowmen again

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Course: Python Lab
Book: Module 7 - Section 0 - Snow fall and snowmen again
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Date: Thursday, 21 November 2024, 5:14 PM

Description

7.0.1 - Drawing functions

In the previous module we have created a drawing function to draw a snowman. In the drawing function we have used variables to draw the snow man in different position inside the screen. 

The function was written outside the pygame main loop:

def draw_snowman(screen, x, y): # Draw a circle for the head pygame.draw.circle(screen, WHITE, [60 + x, 50 + y], 15) # Draw the middle snowman circle pygame.draw.circle(screen, WHITE, [60 + x, 80 + y], 20) # Draw the bottom snowman circle pygame.draw.circle(screen, WHITE, [60 + x, 120 + y], 30) # Draw the buttons pygame.draw.circle(screen, BLACK, [60 + x, 120 + y], 6) pygame.draw.circle(screen, RED, [60 + x, 120 + y], 4) pygame.draw.circle(screen, BLACK, [60 + x, 100 + y], 6) pygame.draw.circle(screen, RED, [60 + x, 100 + y], 4) pygame.draw.circle(screen, BLACK, [60 + x, 80 + y], 6) pygame.draw.circle(screen, RED, [60 + x, 80 + y], 4) #Draw the hat pygame.draw.rect(screen, BROWN, [45 + x, 8 + y, 30,30]) pygame.draw.rect(screen, BROWN, [30 + x, 34 + y, 60,5]) #Draw the eyes pygame.draw.circle(screen, BLACK, [54 + x, 44 + y], 3) pygame.draw.circle(screen, BLACK, [66 + x, 44 + y], 3) #Draw the mouth pygame.draw.arc(screen, RED, [50 + x, 40 + y, 20, 20] , 3.34, 6.08,3) #Draw the nose pygame.draw.polygon(screen, ORANGE, [[58 + x , 46 + y], [60 + x , 54 + y], [72 + x, 60 + y]], 0)

7.0.2 - More than one snowmen

To draw the snowman in multiple places we just have to repeat the draw_snowman function.

For this purpose we can use a for loop or nested loops for the number of snowmen that we want to be drawn inside the screen.

The loop should be in the Drawing Area inside the main loop.

# --- Drawing code should go here for i in range(9): for j in range(3): draw_snowman(screen, 70*i, 160*j)

7.0.3 - Animate shapes using and updating a list

To create multiple instances of a shape, or item, we can use a list to store the characteristics of the items. We used this technique to create snow flakes and then update the position of coordinate Y to look like a snowfall. Also after dissapearing from the screen the snowflake's position updated in a new position above the screen and start to fall again. 

import random snow_list = [] for i in range(50): x = random.randrange(10,690) y = random.randrange(10,490) snow_list.append([x,y]) print(snow_list)