python - How can you add movement to shapes in pygame? -
i using python 2.7 tried make simple game using pygame module. in program makes rectangle, , having trouble doing getting move upon keys being pressed. believe problem 'player.move' part in code, documentation poor on pygames website. appreciated.
import pygame import random import time pygame.init() white = (255,255,255) black = (0,0,0) displaywidth = 800 displayheight = 800 fps = 30 clock = pygame.time.clock() blockwidth = 50 blockheight = 50 pygame.display.set_caption('test game') screen = pygame.display.set_mode([displaywidth, displayheight]) background = pygame.surface(screen.get_size()) background.fill((white)) background = background.convert() screen.blit(background, (0,0)) global xstart, ystart xstart = 400 ystart = 400 global player player = pygame.draw.rect(screen, black, ([xstart,ystart,blockwidth,blockheight])) pygame.display.update() def mainloop(): global x, y x = xstart y = ystart mainloop = true pygame.display.update() while mainloop == true: event in pygame.event.get(): if event.type == pygame.quit: mainloop = false elif event.type == pygame.keydown: if event.key == pygame.k_escape: mainloop = false if event.key == pygame.k_up: player.move(x, y + 10) pygame.display.update() if event.key == pygame.k_down: player.move(x, y - 10) pygame.display.update() if event.key == pygame.k_left: player.move(x - 10, y) pygame.display.update() if event.key == pygame.k_right: player.move(x + 10, y) pygame.display.update() clock.tick(fps) pygame.display.flip() mainloop() pygame.quit()
find tutorial (ie, program arcade games python , pygame) because have many things change.
pygame low-level library , have on own. in while loop have clear screen or draw background , draw player - again , again.
here code after modifications.
you have learn pygame.rect, pygame.surface, (pygame.sprite), events, etc.
import pygame import random import time # --- constants --- (upper_case names) white = (255, 255, 255) black = (0 , 0, 0) display_width = 800 display_height = 800 fps = 30 block_width = 50 block_height = 50 # --- functions --- (lower_case names) def run(): mainloop = true speed_x = 0 speed_y = 0 while mainloop: # --- events --- event in pygame.event.get(): if event.type == pygame.quit: mainloop = false elif event.type == pygame.keydown: if event.key == pygame.k_escape: mainloop = false # - start moving - elif event.key == pygame.k_up: speed_y = -10 elif event.key == pygame.k_down: speed_y = 10 elif event.key == pygame.k_left: speed_x = -10 elif event.key == pygame.k_right: speed_x = 10 #elif event.type == pygame.keyup: # # - stop moving - # if event.key == pygame.k_up: # speed_y = 0 # elif event.key == pygame.k_down: # speed_y = 0 # elif event.key == pygame.k_left: # speed_x = 0 # elif event.key == pygame.k_right: # speed_x = 0 # --- updates --- player_rect.move_ip(speed_x, speed_y) # --- draws --- screen.blit(background, background_rect) screen.blit(player, player_rect) pygame.display.flip() clock.tick(fps) # --- main --- pygame.init() pygame.display.set_caption('test game') screen = pygame.display.set_mode( (display_width, display_height) ) screen_rect = screen.get_rect() background_rect = screen_rect background = pygame.surface(background_rect.size) background.fill(white) background = background.convert() player_rect = pygame.rect(400, 400, block_width, block_height) player = pygame.surface(player_rect.size) player.fill(black) clock = pygame.time.clock() run() pygame.quit()
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