Making an object jump in pygame

Introduction

Pygame is a Python-based multimedia toolkit for creating games and other multimedia applications. We'll utilize the pygame module in this lesson to develop various forms on the screen while considering their height, width, and position within the pygame window.

Pygame is a Python wrapper for SDL, for Simple DirectMedia Layer. SDL allows you to access your system's multimedia hardware, such as sound, video, mouse, keyboard, and joystick, from any platform. To replace the now-defunct PySDL project, the pygame project was formed. You can construct games and rich multimedia Python programs on any platform that supports SDL and pygame because they are cross-platform!

Pygame

Pygame is a collection of cross-platform Python modules for game development. It includes sound and graphics libraries for use with the Python programming language. Now it's up to the developer's imagination or necessity to decide what kind of game they want to make with this toolbox.

So, in this tutorial, we'll look at how to make an object leap in Python using the PyGame package.

To make an item jump, there is a basic formula from classical mechanics.

F = 1/2 * m * v^2

Where F is the upward or downward force, m is the object's mass, and v is the velocity. The velocity decreases over time because the object's velocity does not rise in this simulation when it hops. The jump is completed when the thing reaches the ground. The value of the isjump variable specifies whether or not the object is leaping. If isjump is True, the object's location will be changed using the formula above.

# import pygame module in this program
import pygame
# activate the pygame library.
# initiate pygame and give permission
# to use pygame's functionality.
pygame.init()
# create the display surface object
# of specific dimension..e(500, 500).
win_ing = pygame.display.set_mode((500, 500))
# set the pygame window name
pygame.display.set_caption("Jump Game")
# object current co-ordinates
x_new = 200
y_new = 200
# dimensions of the object
wdth = 30
hght = 40
# Indicates if the player is jumping or not.
is_jump = False
# mass m and force (v) up
v_new = 5
m_new = 1
# pygame is now active.
run_new = True
# endless loop
while run_new:
# Completely cover the thing 
# with black paint.
win_ing.fill((0, 0, 0))
# sketching a rectangle-shaped object on the screen
pygame.draw.rect(win_ing, (255, 0, 0), (x_new, y_new, wdth, hght))

# cycle through the Event object list
# that the pygame.event.get() method returned
for vnt in pygame.event.get():
 
 # If the event object type is QUIT 
 # both the pygame 
 # and the application will be terminated..
 if vnt.type == pygame.QUIT:
  
  # It will cause the while loop to end.
  run_new = False
# keystrokes are saved
kys = pygame.key.get_pressed()
 
if is_jump == False:
 # if space bar is pressed
 if kys[pygame.K_SPACE]:
   
  # make isjump equal to True
  is_jump = True
  
if is_jump :
 # calculate force (F). F = 1 / 2 * mass * velocity ^ 2.
 F_orce =(1 / 2)*mass*(vel**2)
 
 # change in the y co-ordinate
 y-= F_orce
 
 # decreasing velocity while going up and become negative while coming down
 vel = vel-1
 
 # object reached its maximum height
 if vel<0:
  
  # negative sign is added to counter negative velocity
  mass =-1
 # objected reaches its original state
 if vel ==-6:
  # making isjump equal to false
  is_jump = False

  # setting original values to v and m
  vel = 5
  mass = 1

# creates time delay of 10ms
pygame.time.delay(10)
# it refreshes the window
pygame.display.update()
# closes the pygame window 
pygame.quit()

You can also try this code with Online Python Compiler

Run Code