问题
I am creating a simple python game and in it, a character moves around to collect items. I have created the character moving around and when they go over an item (an image), text pops up asking if they want to pick up the item as well as buttons which say 'yes' and 'no'.
If they click yes, the item should disappear and then they return to the game. If they click no, the item will stay there and they should return to the game. To get rid of the item, I have tried to redraw the screen without the item they collect. However, I do not know how to return to the game after they click yes or no. If the button function returns them to game_loop() then the redrawGameWindow() function will activate, moving the character back to its starting position and returning the item. Does anyone know how to fix this/ what function to put in my buttons? Thank you!
Code:
import time
import sys
#we need to initiate pygame at the start of all our code
pygame.init()
display_width = 800
display_height = 600
#creating window, in tuple is width and height of screen
win = pygame.display.set_mode((display_width, display_height))
x = (display_width * 0.45)
y = (display_height * 0.8)
black = (0,0,0)
white = (255,255,255)
red = (200,0,0)
green = (0,200,0)
bright_red = (255, 0, 0)
bright_green = (0,255,0)
purple = (183,52,235)
pink = (255, 209, 237)
blue = (184, 243, 255)
bright_blue = (120, 232, 255)
bright_pink = (247, 148, 208)
transparent = (0, 0, 0, 0)
def crash():
message_display('Item collected')
#button
def button(msg,x,y,w,h,ic,ac, action=None):
mouse = pygame.mouse.get_pos()
click = pygame.mouse.get_pressed()
pygame.draw.rect(win, ic, (x,y,w,h))
#print(mouse)
if x + w > mouse[0] > x and y+h > mouse[1] > y:
pygame.draw.rect(win, ac, (x,y,w,h))
if click[0] == 1 and action != None:
action()
else:
pygame.draw.rect(win, ic, (x,y,w,h))
smallText = pygame.font.Font("Gameplay.ttf", 20)
textSurf, textRect = text_objects(msg, smallText)
textRect.center = ((x+(w/2), y+(h/2)))
win.blit(textSurf, textRect)
def collect_item():
button("YES",150,450,100,50,green, bright_green, remove_image)
button("NO",550,450,100, 50, red, bright_red, game_loop)
message_display('Do you want to pick up item?')
#pygame.display.update()
#def game_loop():
#x = (display_width * 0.45)
#y = (display_height * 0.8)
#x_change = 0
#dodged = 0
#run = True
#good idea to create a screen width variable
screenWidth = 800
#Name of our window
pygame.display.set_caption("First Game")
#Code for importing multiple images of the animated sprite
#walk right animation
walkRight = [pygame.image.load('R1.PNG'), pygame.image.load('R2.PNG'), pygame.image.load('R3.PNG')]
#walk left animation
walkLeft = [pygame.image.load('L1.PNG'), pygame.image.load('L2.PNG'), pygame.image.load('L3.PNG')]
#back ground image load in
bg = pygame.image.load('flowergrass.PNG')
#Basic standing sprite, it is the still image. shows this character when they are not moving
char = pygame.image.load('front.PNG')
def puff(x,y):
win.blit(char (x,y))
#allows us to change our fps in the game
clock = pygame.time.Clock()
swordIMG = pygame.image.load('smallsword.png')
staffIMG = pygame.image.load('staff.png')
chestIMG = pygame.image.load('chest.png')
coinIMG = pygame.image.load('coin.png')
def text_objects(text, font):
textSurface = font.render(text, True, black)
return textSurface, textSurface.get_rect()
def message_display(text):
largeText = pygame.font.Font('freesansbold.ttf', 115)
TextSurf, TextRect = text_objects(text, largeText)
TextRect.center = ((display_width/2)), ((display_height/2))
win.blit(TextSurf, TextRect)
pygame.display.update()
time.sleep(2)
def quitgame():
pygame.quit()
quit()
def game_intro():
intro = True
while intro:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
win.fill(white)
largeText = pygame.font.Font('StitchWarrior demo.ttf', 115)
TextSurf, TextRect = text_objects("Title", largeText)
TextRect.center = ((display_width/2)), ((display_height/2))
win.blit(TextSurf, TextRect)
#Button
button("GO!",150,450,100,50, blue, bright_blue, game_loop)
button("Quit",550,450,100, 50, pink, bright_pink, quitgame)
pygame.display.update()
#creating character
x = 60
y = 450
#width and height of sprite
width = 100
height = 100
#staff
staffwidth = 94
staffheight = 106
#coin
coinwidth = 74
coinheight = 74
#chest
chestwidth = 84
chestheight = 84
def remove_image():
win.blit(bg, (0,0))
char
swordIMG
chestIMG
coinIMG
sys.exit()
#velocity is how fast the character moves
vel = 5
left = False
right = False
walkCount = 0
#function which redraws the game window, this area is for drawing, we do not draw in main loop
def redrawGameWindow():
#x = (display_width * 0.45)
#y = (display_height * 0.8)
global walkCount
win.blit(bg, (0,0)) #back ground image
win.blit(swordIMG,(600,400))
win.blit(staffIMG, (70, 60))
win.blit(chestIMG, (600, 100))
win.blit(coinIMG, (350,300))
if walkCount + 1 >= 0:
walkCount = 0
if left:
win.blit(walkLeft[walkCount], (x,y)) #displaying walk left sprite
walkCount += 1
elif right:
win.blit(walkRight[walkCount], (x,y))
walkCount += 1
#repeat for up and down
else:
win.blit(char, (x,y)) #if we are not moving we blit our character
pygame.display.update() #if we want something to show on the screen in pygame, we must update the screen
#main loop for program
#main loop
#run the variable
#def game_loop():
#redrawGameWindow()
#x = (display_width * 0.45)
#y = (display_height * 0.8)
#x_change = 0
#dodged = 0
def game_loop():
global x, y, left, right, up, down, walkCount
#x = (display_width * 0.45)
#y = (display_height * 0.8)
x_change = 0
dodged = 0
run = True
while run:
#redrawGameWindow()
#game_intro()
clock.tick(27) #sets fps to 20 seconds
#pygame.time.delay(100) #clock in pgyame, parameter is milliseconds
for event in pygame.event.get(): #event is what player does eg. mouse click or key press
if event.type == pygame.QUIT: #if they click the x button (quit)
run = FALSE #loop = false
#using arrow keys to move shape
# all of the and's mean the shape cannot move off the screen
keys = pygame.key.get_pressed()
if keys[pygame.K_LEFT] and x > vel:
x -= vel
left = True
right = False
elif keys[pygame.K_RIGHT] and x < 800 - width - vel: #screen width - width of character
x += vel
right = True
left = False
elif keys[pygame.K_UP] and y > vel:
y -= vel
up = True
down = False
elif keys[pygame.K_DOWN] and y < 600 - height - vel:
y += vel
down = True
up = False
else:
right = False
left = False
up = False
down = False
walkCount = 0
if x < 100 - vel and x > 50 - vel and y > 40 - vel and y < 70:
collect_item()
if x > 600 - vel and x < 703 - vel and y > 400 - vel and y < 502 - vel:
crash()
if x > 330 - vel and x < 420 - vel and y > 280 - vel and y < 300 - vel:
crash()
if x > 600 - vel and x < 684 - vel and y > 100 - vel and y < 184 - vel:
crash()
redrawGameWindow()
#if y < 160 - vel and y > 90 - vel:
#crash()
game_intro()
#game_loop()
#redrawGameWindow() #call function
pygame.quit #game ends```}
**Updated Code**
{```import pygame
import time
import sys
#we need to initiate pygame at the start of all our code
pygame.init()
display_width = 800
display_height = 600
#creating window, in tuple is width and height of screen
win = pygame.display.set_mode((display_width, display_height))
x = (display_width * 0.45)
y = (display_height * 0.8)
black = (0,0,0)
white = (255,255,255)
red = (200,0,0)
green = (0,200,0)
bright_red = (255, 0, 0)
bright_green = (0,255,0)
purple = (183,52,235)
pink = (255, 209, 237)
blue = (184, 243, 255)
bright_blue = (120, 232, 255)
bright_pink = (247, 148, 208)
transparent = (0, 0, 0, 0)
def remove_image(obj):
del objs[objs.index(obj)]
def things_collected(count):
font = pygame.font.SysFont(None, 25)
text = font.render("Items: " + str(count), True, black)
win.blit(text, (0,0))
def crash():
message_display('Item collected')
#button
def button(msg,x,y,w,h,ic,ac, action=None, arg=None):
mouse = pygame.mouse.get_pos()
click = pygame.mouse.get_pressed()
pygame.draw.rect(win, ic, (x,y,w,h))
#print(mouse)
if x + w > mouse[0] > x and y+h > mouse[1] > y:
pygame.draw.rect(win, ac, (x,y,w,h))
if click[0] == 1 and action != None:
if arg:
action(arg)
else:
action()
else:
pygame.draw.rect(win, ic, (x,y,w,h))
smallText = pygame.font.Font("Gameplay.ttf", 20)
textSurf, textRect = text_objects(msg, smallText)
textRect.center = ((x+(w/2), y+(h/2)))
win.blit(textSurf, textRect)
def collect_item():
button("YES",150,450,100,50,blue, bright_blue, remove_image,obj)
button("NO",550,450,100, 50, pink, bright_pink)
message_display('Pick up item?')
#pygame.display.update()
#def game_loop():
#x = (display_width * 0.45)
#y = (display_height * 0.8)
#x_change = 0
#dodged = 0
#run = True
#good idea to create a screen width variable
screenWidth = 800
#Name of our window
pygame.display.set_caption("First Game")
#Code for importing multiple images of the animated sprite
#walk right animation
walkRight = [pygame.image.load('R1.PNG'), pygame.image.load('R2.PNG'), pygame.image.load('R3.PNG')]
#walk left animation
walkLeft = [pygame.image.load('L1.PNG'), pygame.image.load('L2.PNG'), pygame.image.load('L3.PNG')]
#back ground image load in
bg = pygame.image.load('path.PNG')
opening_bg = pygame.image.load('openingbg.PNG')
#Basic standing sprite, it is the still image. shows this character when they are not moving
char = pygame.image.load('front.PNG')
def puff(x,y):
win.blit(char (x,y))
#allows us to change our fps in the game
clock = pygame.time.Clock()
swordIMG = pygame.image.load('smallsword.png')
staffIMG = pygame.image.load('staff.png')
chestIMG = pygame.image.load('chest.png')
coinIMG = pygame.image.load('coin.png')
class Object:
def __init__(self, x, y, image):
self.x = x
self.y = y
self.image = image
self.rect = image.get_rect()
self.rect.topleft = (self.x, self.y)
objs = []
objs.append(Object(600, 400, swordIMG))
objs.append(Object(70, 60, staffIMG))
objs.append(Object(600, 100, chestIMG))
objs.append(Object(350, 300, coinIMG))
def text_objects(text, font):
textSurface = font.render(text, True, black)
return textSurface, textSurface.get_rect()
def message_display(text):
largeText = pygame.font.Font('Gameplay.ttf', 50)
TextSurf, TextRect = text_objects(text, largeText)
TextRect.center = ((display_width/2)), ((display_height/2))
win.blit(TextSurf, TextRect)
pygame.display.update()
time.sleep(2)
def quitgame():
pygame.quit()
quit()
def game_intro():
intro = True
while intro:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
win.blit(opening_bg, (0,0))
largeText = pygame.font.Font('StitchWarrior demo.ttf', 70)
TextSurf, TextRect = text_objects("The Adventures of Peyia", largeText)
TextRect.center = ((display_width/2)), ((display_height/4))
win.blit(TextSurf, TextRect)
#Button
button("GO!",150,450,100,50, blue, bright_blue, game_loop)
button("Quit",550,450,100, 50, pink, bright_pink, quitgame)
pygame.display.update()
#creating character
x = 60
y = 450
#width and height of sprite
width = 100
height = 100
#staff
staffwidth = 94
staffheight = 106
#coin
coinwidth = 74
coinheight = 74
#chest
chestwidth = 84
chestheight = 84
#def remove_image():
#win.blit(bg, (0,0))
#char
#swordIMG
#chestIMG
#coinIMG
#collected += 1
#velocity is how fast the character moves
vel = 5
left = False
right = False
walkCount = 0
#function which redraws the game window, this area is for drawing, we do not draw in main loop
def redrawGameWindow():
#x = (display_width * 0.45)
#y = (display_height * 0.8)
global walkCount
win.blit(bg, (0,0)) #back ground image
#win.blit(swordIMG,(600,400))
#win.blit(staffIMG, (70, 60))
#win.blit(chestIMG, (600, 100))
#win.blit(coinIMG, (350,300))
for obj in objs:
win.blit(obj.image, obj.rect)
if walkCount + 1 >= 0:
walkCount = 0
if left:
win.blit(walkLeft[walkCount], (x,y)) #displaying walk left sprite
walkCount += 1
elif right:
win.blit(walkRight[walkCount], (x,y))
walkCount += 1
#repeat for up and down
else:
win.blit(char, (x,y)) #if we are not moving we blit our character
pygame.display.update() #if we want something to show on the screen in pygame, we must update the screen
#main loop for program
#main loop
#run the variable
#def game_loop():
#redrawGameWindow()
#x = (display_width * 0.45)
#y = (display_height * 0.8)
#x_change = 0
#dodged = 0
def game_loop():
global x, y, left, right, up, down, walkCount
x = 60
y = 450
#x = (display_width * 0.45)
#y = (display_height * 0.8)
x_change = 0
collected = 0
run = True
while run:
for obj in reversed(objs): #if delete obj in list while looping through it, the loop will still try to get the deleted obj, so reverse to fix this
if obj.rect.collidepoint((x + vel, y + vel)):
collect_item(obj) #give the object so we know which one to delete
redrawGameWindow()
#game_intro()
clock.tick(27) #sets fps to 20 seconds
#pygame.time.delay(100) #clock in pgyame, parameter is milliseconds
things_collected(collected)
for event in pygame.event.get(): #event is what player does eg. mouse click or key press
if event.type == pygame.QUIT: #if they click the x button (quit)
run = FALSE #loop = false
#using arrow keys to move shape
# all of the and's mean the shape cannot move off the screen
keys = pygame.key.get_pressed()
if keys[pygame.K_LEFT] and x > vel:
x -= vel
left = True
right = False
elif keys[pygame.K_RIGHT] and x < 800 - width - vel: #screen width - width of character
x += vel
right = True
left = False
elif keys[pygame.K_UP] and y > vel:
y -= vel
up = True
down = False
elif keys[pygame.K_DOWN] and y < 600 - height - vel:
y += vel
down = True
up = False
else:
right = False
left = False
up = False
down = False
walkCount = 0
if x < 100 - vel and x > 50 - vel and y > 40 - vel and y < 70:
collect_item()
if x > 600 - vel and x < 703 - vel and y > 400 - vel and y < 502 - vel:
crash()
if x > 330 - vel and x < 420 - vel and y > 280 - vel and y < 300 - vel:
crash()
if x > 600 - vel and x < 684 - vel and y > 100 - vel and y < 184 - vel:
crash()
#redrawGameWindow()
#if y < 160 - vel and y > 90 - vel:
#crash()
game_intro()
#game_loop()
#redrawGameWindow() #call function
pygame.quit #game ends
回答1:
the way i would do it is have a class for a object, then create the objects and put them in a list, when you draw the window, loop through the list and draw each object, if you want to 'get rid' of a object, delete it from the list, if you want to add an object, add it to the list
here is an example
class Object:
def __init__(self, x, y, image):
self.x = x
self.y = y
self.image = image
self.rect = image.get_rect()
self.rect.topleft = (self.x, self.y)
objs = []
objs.append(Object(100, 100, swordIMG))
objs.append(Object(300, 400, staffIMG))
objs.append(Object(200, 340, chestIMG))
def redrawGameWindow():
for obj in objs:
win.blit(obj.image, obj.rect)
def game_loop():
while run:
for obj in reversed(objs): #if delete obj in list while looping through it, the loop will still try to get the deleted obj, so reverse to fix this
if obj.rect.collidpoint((x + vel, y + vel)):
collect_item(obj) #give the object so we know which one to delete
def button(msg,x,y,w,h,ic,ac, action=None, arg = None):
mouse = pygame.mouse.get_pos()
click = pygame.mouse.get_pressed()
pygame.draw.rect(win, ic, (x,y,w,h))
#print(mouse)
if x + w > mouse[0] > x and y+h > mouse[1] > y:
pygame.draw.rect(win, ac, (x,y,w,h))
if click[0] == 1 and action != None:
if arg:
action(arg)
else:
action()
else:
pygame.draw.rect(win, ic, (x,y,w,h))
smallText = pygame.font.Font("Gameplay.ttf", 20)
textSurf, textRect = text_objects(msg, smallText)
textRect.center = ((x+(w/2), y+(h/2)))
win.blit(textSurf, textRect)
def collect_items(obj):
button("YES",150,450,100,50,green, bright_green, remove_image,obj)
button("NO",550,450,100, 50, red, bright_red)
message_display('Do you want to pick up item?')
def remove_image(obj):
del objs[objs.index(obj)]
and the button function looks good, ive recently tried to make a customizable but simple button for pygame here if you want some inspiration
import time
import sys
import pygame
#we need to initiate pygame at the start of all our code
pygame.init()
display_width = 800
display_height = 600
#creating window, in tuple is width and height of screen
win = pygame.display.set_mode((display_width, display_height))
x = (display_width * 0.45)
y = (display_height * 0.8)
black = (0,0,0)
white = (255,255,255)
red = (200,0,0)
green = (0,200,0)
bright_red = (255, 0, 0)
bright_green = (0,255,0)
purple = (183,52,235)
pink = (255, 209, 237)
blue = (184, 243, 255)
bright_blue = (120, 232, 255)
bright_pink = (247, 148, 208)
transparent = (0, 0, 0, 0)
#allows us to change our fps in the game
clock = pygame.time.Clock()
swordIMG = pygame.Surface((40,40))
swordIMG.fill((255,0,0))
staffIMG = swordIMG
chestIMG = swordIMG
coinIMG = swordIMG
#good idea to create a screen width variable
screenWidth = 800
#Name of our window
pygame.display.set_caption("First Game")
#Code for importing multiple images of the animated sprite
img = pygame.Surface((50,50))
img.fill((0,255,0))
#walk right animation
walkRight = [img, img, img]
#walk left animation
walkLeft = walkRight
#back ground image load in
bg = pygame.Surface((800,800))
bg.fill((255,255,255))
#Basic standing sprite, it is the still image. shows this character when they are not moving
char = pygame.Surface((50,50))
char.fill((0,255,0))
#velocity is how fast the character moves
vel = 5
left = False
right = False
walkCount = 0
#creating character
x = 60
y = 450
#width and height of sprite
width = 100
height = 100
#staff
staffwidth = 94
staffheight = 106
#coin
coinwidth = 74
coinheight = 74
#chest
chestwidth = 84
chestheight = 84
class Object:
def __init__(self, x, y, image):
self.x = x
self.y = y
self.image = image
self.rect = image.get_rect()
self.rect.topleft = (self.x, self.y)
objs = []
objs.append(Object(600, 400, swordIMG))
objs.append(Object(70, 60, staffIMG))
objs.append(Object(600, 100, chestIMG))
objs.append(Object(350, 300, coinIMG))
can_pickup = True
prev_frame_over_Object = False
def crash():
message_display('Item collected')
#button
def button(msg,x,y,w,h,ic,ac, action=None, arg=None):
mouse = pygame.mouse.get_pos()
click = pygame.mouse.get_pressed()
pygame.draw.rect(win, ic, (x,y,w,h))
#print(mouse)
if x + w > mouse[0] > x and y+h > mouse[1] > y:
pygame.draw.rect(win, ac, (x,y,w,h))
if click[0] == 1 and action != None:
if arg:
action(arg)
else:
action()
else:
pygame.draw.rect(win, ic, (x,y,w,h))
smallText = pygame.font.Font(pygame.font.match_font('calibri'), 20)
textSurf, textRect = text_objects(msg, smallText)
textRect.center = ((x+(w/2), y+(h/2)))
win.blit(textSurf, textRect)
def NO():
global can_pickup
can_pickup = False
def collect_item(obj):
button("YES",150,450,100,50,green, bright_green, remove_image, obj)
message_display('Do you want to pick up item?')
button("NO",550,450,100, 50, red, bright_red, NO)
def puff(x,y):
win.blit(char (x,y))
def text_objects(text, font):
textSurface = font.render(text, True, black)
return textSurface, textSurface.get_rect()
def message_display(text):
largeText = pygame.font.Font('freesansbold.ttf', 115)
TextSurf, TextRect = text_objects(text, largeText)
TextRect.center = ((display_width/2)), ((display_height/2))
win.blit(TextSurf, TextRect)
def quitgame():
pygame.quit()
quit()
def game_intro():
intro = True
while intro:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
win.fill(white)
largeText = pygame.font.Font(pygame.font.match_font('calibri'), 115)
TextSurf, TextRect = text_objects("Title", largeText)
TextRect.center = ((display_width/2)), ((display_height/2))
win.blit(TextSurf, TextRect)
#Button
button("GO!",150,450,100,50, blue, bright_blue, game_loop)
button("Quit",550,450,100, 50, pink, bright_pink, quitgame)
pygame.display.update()
def remove_image(obj):
del objs[objs.index(obj)]
#function which redraws the game window, this area is for drawing, we do not draw in main loop
def redrawGameWindow():
global walkCount
win.blit(bg, (0,0)) #back ground image
for obj in objs:
win.blit(obj.image, obj.rect)
if walkCount + 1 >= 0:
walkCount = 0
if left:
win.blit(walkLeft[walkCount], (x,y)) #displaying walk left sprite
walkCount += 1
elif right:
win.blit(walkRight[walkCount], (x,y))
walkCount += 1
#repeat for up and down
else:
win.blit(char, (x,y)) #if we are not moving we blit our character
def game_loop():
global x, y, left, right, up, down, walkCount, prev_frame_over_Object, can_pickup
x_change = 0
dodged = 0
run = True
while run:
#redrawGameWindow()
#game_intro()
clock.tick(27) #sets fps to 20 seconds
#pygame.time.delay(100) #clock in pgyame, parameter is milliseconds
for event in pygame.event.get(): #event is what player does eg. mouse click or key press
if event.type == pygame.QUIT: #if they click the x button (quit)
run = False #loop = false
#using arrow keys to move shape
# all of the and's mean the shape cannot move off the screen
keys = pygame.key.get_pressed()
if keys[pygame.K_LEFT] and x > vel:
x -= vel
left = True
right = False
elif keys[pygame.K_RIGHT] and x < 800 - width - vel: #screen width - width of character
x += vel
right = True
left = False
elif keys[pygame.K_UP] and y > vel:
y -= vel
up = True
down = False
elif keys[pygame.K_DOWN] and y < 600 - height - vel:
y += vel
down = True
up = False
else:
right = False
left = False
up = False
down = False
walkCount = 0
redrawGameWindow()
is_over = False
for obj in reversed(objs): #if delete obj in list while looping through it, the loop will still try to get the deleted obj, so reverse to fix this
if obj.rect.collidepoint((x + vel, y + vel)):
is_over = True
if prev_frame_over_Object == False:
can_pickup = True
if can_pickup:
collect_item(obj) #give the object so we know which one to delete
prev_frame_over_Object = is_over
pygame.display.update() #if we want something to show on the screen in pygame, we must update the screen
game_intro()
pygame.quit #game ends```}
this code works, i found that you had time.sleep in the text display so the fps dropped to half a frame per second, but once that was out and i moved the order of drawing, everything seemed to work, i dont have the images you have so i changed them to squares, they are at the top, dont copy paste them
来源：https://stackoverflow.com/questions/62227424/creating-simple-python-game-button-functions