I want to blit out my image on the screen with Pygame, but it doesn't work; It gives me a warning :
Cannot find reference 'load' in 'image.py'
And during execution time, it gives no such fatal error. All I get is a blank white screen with no image. I have referred to this and this, but just does not seem to work. This is my code:
import pygame
class Bouncer(object):
display_width = 600
display_height = 400
color_white = (255, 255, 255)
clock = pygame.time.Clock()
game_exit = False
bar_image = pygame.image.load('bar.png') # <------ here is the issue
def __init__(self):
pygame.init()
self.game_display = pygame.display.set_mode((self.display_width,
self.display_height))
pygame.display.set_caption('Bouncy Bouncer')
def showBar(self):
self.game_display.blit(self.bar_image, (10, 10))
def gameLoop(self):
while not self.game_exit:
for event in pygame.event.get():
#on close quit
if event.type == pygame.QUIT:
self.game_exit = True
pygame.quit()
quit()
#on key press quit
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_x:
self.game_exit = True
pygame.quit()
quit()
self.showBar()
self.game_display.fill(self.color_white)
pygame.display.update()
self.clock.tick(60)
game_instance = Bouncer()
game_instance.gameLoop()
I called fiest called my image then the fill function, so it overlapped the white background, thus, covering the image. So, what I did was first call the background, then the image.
Related
I am making a new game in pygame and the blit function just is not working for me, it should be simple but I just don't know what's wrong.
import pygame
import sys
pygame.init()
clock = pygame.time.Clock()
game = True
WIDTH = 160
HEIGHT = 144
screen = pygame.display.set_mode((WIDTH, HEIGHT), pygame.FULLSCREEN)
level = pygame.image.load('RBYG/Level.png')
def redrawGameWindow():
screen.blit(level, (0, 0))
while game:
screen.blit(level,(0, 0))
for event in pygame.event.get():
print(event)
if event.type == pygame.QUIT:
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
sys.exit()
redrawGameWindow()
clock.tick(60)
You're missing pygame.display.flip(), you have to do that after you blit or nothing will happen. Your redrawGameWindow() function should flip the display. Also, you're calling screen.blit(level, (0, 0)) twice in your main loop, which may be unnecessary; try just keeping one of them (just make sure to flip() after).
I've just recently become interested in pygame and the thing is my code doesn't work as what I intended: the image that I want to move with my mouse doesn't moving at all. So here's mine (contains code from previous question I saw):
import pygame,sys,os
WHITE = (255,255,255)
BLACK = (0,0,0)
GREY = (128,128,128)
class SilverGeneral:
def __init__(self,rect):
self.click = False
self.rect = pygame.Rect(rect)
def update(self,screen):
if self.click:
self.rect.center = pygame.mouse.get_pos()
pygame.init()
screen=pygame.display.set_mode([1000,600])
pygame.display.set_caption("Test")
silv = SilverGeneral((5,5,40,20))
silv.rect.center=screen.get_rect().center
clock = pygame.time.Clock()
image = pygame.image.load("c:\game\silvergeneral.bmp").convert()
while 1:
screen.fill(WHITE)
for event in pygame.event.get():
if event.type == pygame.MOUSEBUTTONUP:
print(silv.rect.collidepoint(event.pos))
if silv.rect.collidepoint(event.pos):
print("True")
silv.click=True
elif event.type == pygame.MOUSEBUTTONDOWN:
print("False")
silv.click=False
elif event.type == pygame.QUIT:
pygame.quit()
sys.exit()
print (pygame.mouse.get_pos())
print (silv.rect.center)
silv.update(screen)
screen.blit(image,silv.rect)
clock.tick(10)
pygame.display.update()
I have been thinking for a whole hour and don't know why the collidepoint(event.pos) doesn't work. Also even if it's tested, the console never prints True.
collidepoint(event.pos) works just fine.
It seems that you want to be able to move the image once you click on it.
I guess your problem is that you expect it to work with clicking anywhere on that image, but you actually check if the mouse position is in the top left 40x20 pixel box of the image.
You can easily verify that by changing
screen.blit(image,silv.rect)
to
pygame.draw.rect(screen, pygame.color.THECOLORS['blue'], silv.rect, 0)
A good starting point is to use pygame's Sprite class and change your code to something like this:
class SilverGeneral(pygame.sprite.Sprite):
def __init__(self, *groups):
pygame.sprite.Sprite.__init__(self, *groups)
self.click = False
self.image = pygame.image.load("image.jpg").convert()
self.rect = self.image.get_rect()
def update(self):
if self.click:
self.rect.center = pygame.mouse.get_pos()
pygame.init()
screen=pygame.display.set_mode([1000,600])
pygame.display.set_caption("Test")
sprites = pygame.sprite.Group()
silv = SilverGeneral(sprites)
silv.rect.center = screen.get_rect().center
clock = pygame.time.Clock()
while 1:
screen.fill(WHITE)
for event in pygame.event.get():
if event.type == pygame.MOUSEBUTTONUP:
silv.click = silv.rect.collidepoint(event.pos) and not silv.click
elif event.type == pygame.QUIT:
pygame.quit()
sys.exit()
sprites.update()
sprites.draw(screen)
clock.tick(60)
pygame.display.update()
The important thing here is that the rect is set to the rect of the image, so it will have the right size.
I need help. My code is not working on Pygame. All that it shows is a blank screen. My code is supposed to ask you for a number, then when you enter it, the code displays that number to the power of three. Here is my code:
import pygame
import time
pygame.font.init()
pygame.init
white = (255,255,255)
black = (0,0,0)
red = (255,0,0)
display_width = 800
display_height = 600
gameDisplay = pygame.display.set_mode((display_width,display_height))
pygame.display.set_caption('Cube')
gameExit = False
clock = pygame.time.Clock()
font = pygame.font.SysFont('arial', 25)
def message_to_screen(msg,color):
screen_text = font.render(msg, True, color)
gameDisplay.blit(screen_text, [display_width/2, display_height/2])
while not gameExit:
def input(number):
message_to_screen("Enter a Number to Cube")
total = number ** 3
if number > 0:
message_to_screen(total, red)
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
gameDisplay.fill(white)
pygame.display.update()
time.sleep(2)
if gameExit == True:
pygame.quit()
quit()
The reason the screen is blank is because you're filling it with a solid color just before updating.
while not gameExit:
def input(number):
message_to_screen("Enter a Number to Cube")
total = number ** 3
if number > 0:
message_to_screen(total, red)
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
gameDisplay.fill(white) # <-- THIS OVERDRAWS EVERYTHING ELSE
pygame.display.update()
There are a few things I notice:
You fill your gameDisplay with white, prior to updating it. This means that everything you drew before is overwritten.
The function input is never called
The function input is being defined in the while-loop. It would be wise to take it out.
The check on gameExit == True is never reached within your while loop. Move it inside the loop.
Those are all some pretty basic errors. Are you aware of what you're doing and is there some tutorial you're following?
I'm trying to do a drag-and-drop mechanic in pygame and I'm being partly successful (thanks to answers to questions like this one and tutorials like this other one). The mechanic I'm using goes as follows: I update in every loop the position of the image once the event of pressing the button is detected (and only if the mouse is over the image). To do so, I created a rectangle object by just calling image.get_rect(), but it seems that this rectangle is shifted, with the center of the image laying in the bottom right of the rectangle. I annex both the code an the result:
import pygame, sys
from pygame.locals import *
FPS = 60
fpsClock = pygame.time.Clock()
def main():
pygame.init()
DS = pygame.display.set_mode((400, 400), 0, 32)
pygame.display.set_caption('Drag-n-drop that cat')
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
catImg = pygame.image.load('cat.png') # I load the image
catImgRectObj = catImg.get_rect() # I create the rect object
catx = 200
caty = 200
catImgRectObj.center = [catx, caty]
IsMousePressed = False
while True:
lastPos = catImgRectObj.center
DS.fill(WHITE)
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
elif event.type == MOUSEBUTTONDOWN:
IsMousePressed = True
elif event.type == MOUSEBUTTONUP:
IsMousePressed = False
if IsMousePressed and isMouseOverObj(catImgRectObj):
catImgRectObj.center = pygame.mouse.get_pos() #I update the center
else:
catImgRectObj.center = lastPos
pygame.draw.rect(DS, BLACK, catImgRectObj) #draw the rect object
DS.blit(catImg, catImgRectObj.center) #draw the cat.
pygame.display.update()
fpsClock.tick(FPS)
def isMouseOverObj(Obj):
return Obj.collidepoint(pygame.mouse.get_pos())
if __name__ == '__main__':
main()
Use
DS.blit(catImg, catImgRectObj)
instead of
DS.blit(catImg, catImgRectObj.center)
to draw the cat.
The catImgRectObj rect already describes where the cat image is, and if you use catImgRectObj.center to blit it on the screen, but shift its top left corner to the center of the desired area.
Also, I would use something like this:
import pygame, sys
from pygame.locals import *
FPS = 60
fpsClock = pygame.time.Clock()
def main():
pygame.init()
DS = pygame.display.set_mode((400, 400), 0, 32)
pygame.display.set_caption('Drag-n-drop that cat')
catImg = pygame.image.load('cat.png').convert_alpha()
catMask = pygame.mask.from_surface(catImg)
catImgRectObj = catImg.get_rect(center=(200, 200))
IsMousePressed = False
while True:
DS.fill(pygame.color.THECOLORS['white'])
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
elif event.type == MOUSEBUTTONDOWN and isMouseOverObj(catMask, catImgRectObj):
IsMousePressed = True
elif event.type == MOUSEBUTTONUP:
IsMousePressed = False
elif event.type == MOUSEMOTION and IsMousePressed:
catImgRectObj.move_ip(event.rel)
DS.blit(catImg, catImgRectObj)
pygame.display.update()
fpsClock.tick(FPS)
def isMouseOverObj(mask, rect):
mouse_pos = pygame.mouse.get_pos()
rel_pos = (mouse_pos[0] - rect.left, mouse_pos[1] - rect.top)
return rect.collidepoint(mouse_pos) and mask.get_at(rel_pos)
if __name__ == '__main__':
main()
to make the collision detection pixel perfect, simplify the code a bit, and to prevent the jumping once you click on the cat.
Hi I'm having some trouble realizing my ideas. I first wanted to draw rectangles with two mouse clicks, but it didn't work properly so i reduced it to this: to draw fixed-size rectangles with one mouse click.
However it still doesn't work/...
import pygame
windowSize = (500,500)
white = (255,255,255)
black = (0,0,0)
pygame.init()
screen = pygame.display.set_mode(windowSize)
running = 1
while running:
screen.fill(white)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
running = 0
THE PROBLEM IS HERE SOMEWHERRE
elif event.type == pygame.MOUSEBUTTONDOWN:
rect = pygame.Rect(event.dict["pos"],(30,50))
pygame.draw.rect(screen,black,rect,1)
pygame.display.flip()
I know there might be a lot of conceptual errors with my code... please help!
You are filling white the entire screen every tick. So after you actually draw the screen become blank again on the next tick. Just move screen.fill(white) out of main cycle:
import pygame
windowSize = (500,500)
white = (255,255,255)
black = (0,0,0)
pygame.init()
screen = pygame.display.set_mode(windowSize)
running = 1
screen.fill(white)
while running:
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
elif event.type == pygame.MOUSEBUTTONDOWN:
rect = pygame.Rect(event.dict["pos"],(30,50))
pygame.draw.rect(screen,black,rect,1)
pygame.display.flip()