python - Pygame 2d tile scrolling edges don't load -
im trying make 2d game in pygame kinda works pokemon. ive gotten stuck on problem dont know how solve.
when move character scroll map instead player stays centered. i've created "animation" offsetting distance 2 pixels @ time instead of moving full tile size smooth movemen. problem have when move, screen doesn't load new tiles in edges i'm moving towards edges end white space until i've completed full animation. i'll link code , can me :)
tilesize = 32 map_width = 25 map_height = 25 class player(pygame.sprite.sprite): def __init__(self, color, width, height): # call parent class (sprite) constructor super().__init__() self.name = "player" self.width = width self.height = height self.image = pygame.surface([width, height]) self.image.fill(color) self.rect = self.image.get_rect() self.rect.x = int(tilesize * (map_width / 2)) - tilesize / 2 self.rect.y = int(tilesize * (map_height / 2)) - tilesize / 2 class world: def __init__(self): self.shiftx = 0 self.shifty = 0 self.tile_map = [ [dirt w in range(map_width)] h in range(map_height)] row in range(map_height): column in range(map_width): try: if real_map[row + self.shifty][column + self.shiftx] == 0: tile = dirt elif real_map[row + self.shifty][column + self.shiftx] == 1: tile = grass elif real_map[row + self.shifty][column + self.shiftx] == 2: tile = water else: tile = dirt self.tile_map[row][column] = tile except: self.tile_map[row][column] = water def shiftworld(self): row in range(map_height): column in range(map_width): try: if real_map[row + self.shifty][column + self.shiftx] == 0: tile = dirt elif real_map[row + self.shifty][column + self.shiftx] == 1: tile = grass elif real_map[row + self.shifty][column + self.shiftx] == 2: tile = water else: tile = dirt self.tile_map[row][column] = tile except: self.tile_map[row][column] = water def oktomove(self, key): if key[k_w]: if self.tile_map[int(map_width/2 - 1)][int(map_height/2)] != 2: return true elif key[k_s]: if self.tile_map[int(map_width/2 + 1)][int(map_height/2)] != 2: return true elif key[k_a]: if self.tile_map[int(map_width/2)][int(map_height/2) - 1] != 2: return true elif key[k_d]: if self.tile_map[int(map_width/2)][int(map_height/2) + 1] != 2: return true def start_game(): pygame.init() clock = pygame.time.clock() #hÄr kan vi mÅla upp mer #screen = pygame.display.set_mode((map_width*tilesize, map_height*tilesize)) world = world() screen = pygame.display.set_mode((tilesize * (map_width-2), tilesize * (map_height-4))) running = true player = player(black, 32, 32) sprites = pygame.sprite.group() sprites.add(player) movement = 0 offsety = 0 offsetx = 0 animation_north = false animation_south = false animation_west = false animation_east = false while running: event in pygame.event.get(): if event.type==quit: pygame.quit() sys.exit() elif event.type == pygame.keydown: #get keyinput , whatever needs done key = pygame.key.get_pressed() if key[k_escape]: pygame.quit() sys.exit() if animation_east or animation_north or animation_south or animation_west: pass else: if key[k_w]: oktomove = world.oktomove(key) if oktomove == true: animation_north = true else: pass elif key[k_a]: oktomove = world.oktomove(key) if oktomove == true: animation_west = true elif key[k_s]: oktomove = world.oktomove(key) if oktomove == true: animation_south = true elif key[k_d]: oktomove = world.oktomove(key) if oktomove == true: animation_east = true if animation_north == true: if movement == 32: movement = 0 world.shifty -= 1 world.shiftworld() offsety = 0 animation_north = false else: offsety += 4 movement += 4 if animation_south == true: if movement == 32: movement = 0 world.shifty += 1 world.shiftworld() offsety = 0 animation_south = false inty = 0 else: offsety -= 4 movement += 4 if animation_west == true: if movement == 32: movement = 0 world.shiftx -= 1 world.shiftworld() offsetx = 0 animation_west = false else: offsetx += 4 movement += 4 if animation_east == true: if movement == 32: world.shiftx += 1 world.shiftworld() movement = 0 offsetx = 0 animation_east = false else: offsetx -= 4 movement += 4 screen.fill(white) row in range(map_height): column in range(map_width): screen.blit(textures[world.tile_map[row][column]], (column*tilesize + offsetx, row*tilesize + offsety)) sprites.draw(screen) pygame.display.update() pygame.display.flip() clock.tick(60) start_game()
i writing similar game , share logic you. blocks 32x32 each block 32 pixesl.
the outer border sprites screen , inner square monitor. have 1 sprite on sides of screen. if count pixel movement on side of screen it's easy keep track of when need draw next row or column of sprites not drawn off screen. if pixel movement -8 (left movement) draw column of sprites on right side on border os screen outside visible area. same goes other side.
here code program. sprite adding code.
def add_sprites(self): """sprites added group appear on screen right. column number value in coldrawn. selct columns list according value. once end of column list reached start again first one. cycle thru list depending on numcycle[0] value.""" if self.coldrawn < self.columns_in_dungeon - 1: self.coldrawn += 1 else: # columns drawn increment flag self.coldrawn = 0 self.numcycle[1] += 1 if self.numcycle[1] >= self.numcycle[0]: # if flag equal number of cycles screen scrolled set numcycle[2] true self.numcycle[2] = true else: # screen can scrolled spritecol = self.all_wall_sprite_columns_list[self.coldrawn] self.wallspritegroup.add(spritecol) # add column of sprites sprite group return and here sprite removing code.
def remove_sprites(self): """sprites removed group exit screen left.""" sprt in self.wallspritegroup: # remove_basic sprites move_basic off screen on left if sprt.rect.x <= -48: sprt.rect.x = self.screenw # reset x position , sprt.kill() #spritegrp.remove_basic(sprt) # remove_basic sprite sprite group return the code quite easy follow have commented them. hope helps.
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