def on_update(self, delta_time: float):
"""
Update the positions and statuses of all game objects
If paused, do nothing
:param delta_time: Time since the last update
"""
if not self.game_over or not self.paused:
self.physics_engine.step()
# handle background music
self.play_music()
if self.screen_wipe_rect: # when the game is transitioning to a new level/restarting a level
self.screen_wipe_rect.center_x += self.screen_wipe_rect.change_x
self.screen_wipe_rect.center_y = self.view_bottom + (SCREEN_HEIGHT / 2)
# handle loading level here, after screen is covered in blue wipe
if (self.screen_wipe_rect.center_x > SCREEN_WIDTH) and (self.update_level):
self.load_level(self.level)
self.update_level = False # lower flag when level begins to load
if self.screen_wipe_rect.center_x > SCREEN_WIDTH * 2:
self.screen_wipe_rect = None
# Update everything
self.player_list.update()
self.all_sprites.update()
self.enemies_list.update()
self.moving_platforms_list.update()
self.cannons_list.update()
Controls.handle_control_actions(self)
if self.player.in_water:
Controls.handle_water_physics(self)
self.process_damage()
self.track_moving_sprites(delta_time)
self.cannon_toggle()
self.in_water_physics()
if ar.check_for_collision_with_list(self.player, self.keys_list) and not self.update_level:
current_key = ar.check_for_collision_with_list(self.player, self.keys_list)[0]
if self.key_colors[current_key] == WHITE:
# this if statement is redundant so that we don't immediately enter the else statement below
if self.hidden_platform_list:
self.orb_off_sound.play(volume=0.2)
for platform in self.hidden_platform_list:
self.physics_engine.remove_sprite(platform)
self.hidden_platform_list = None
self.player.color = WHITE
else:
if not self.hidden_platform_list:
self.orb_touched_sound.play(volume=0.2)
self.load_layer("Hidden Platforms", self.key_colors[current_key])
self.player.color = self.key_colors[current_key]
# if player gets to the right edge of the level, go to next level
if self.player.right >= self.end_of_map:
self.update_level = True # raise this flag to properly restart level
self.level += 1 # switch to next level
self.screen_wipe_rect = Transition()
self.screen_wipe_rect.setup()
self.player_teleported = True
self.physics_engine.set_horizontal_velocity(self.player, 0)
self.physics_engine.set_position(self.player, self.player.spawnpoint)
# if the player hits the bottom of the level, player dies and respawns at the start of the level
if self.player.bottom <= 0:
self.update_level = True # raise this flag to properly restart level
self.screen_wipe_rect = Transition()
self.screen_wipe_rect.setup()
self.player_teleported = True
self.physics_engine.set_horizontal_velocity(self.player, 0)
self.physics_engine.set_position(self.player, self.player.spawnpoint)
if self.physics_engine.is_on_ground(self.player) and self.player.jumping:
self.player.jumping = False
# track if we need to change the view port
changed = False
# Scroll left
left_bndry = self.view_left + VIEWPORT_LEFT_MARGIN
if self.player.left < left_bndry and self.player.left > VIEWPORT_LEFT_MARGIN:
self.view_left -= left_bndry - self.player.left
changed = True
# Scroll right
right_bndry = self.view_left + SCREEN_WIDTH - VIEWPORT_RIGHT_MARGIN
if self.player.right > right_bndry and (self.player.right < (self.end_of_map - VIEWPORT_RIGHT_MARGIN)):
self.view_left += self.player.right - right_bndry
changed = True
# Scroll up
top_bndry = self.view_bottom + SCREEN_HEIGHT - VIEWPORT_MARGIN_TOP
if self.player.top > top_bndry and (self.player.top < (self.top_of_map - VIEWPORT_MARGIN_TOP)):
self.view_bottom += self.player.top - top_bndry
changed = True
# Scroll down
bottom_bndry = self.view_bottom + VIEWPORT_MARGIN_BOTTOM
if self.player.bottom < bottom_bndry and self.player.bottom > VIEWPORT_MARGIN_BOTTOM:
self.view_bottom -= bottom_bndry - self.player.bottom
changed = True
# If we need to scroll, go ahead and do it.
# also change viewport when player has teleported (when switching levels, respawning, etc)
if changed:
self.view_left = int(self.view_left)
self.view_bottom = int(self.view_bottom)
ar.set_viewport(self.view_left,
SCREEN_WIDTH + self.view_left,
self.view_bottom,
SCREEN_HEIGHT + self.view_bottom)
if self.player_teleported and self.screen_wipe_rect.center_x > SCREEN_WIDTH:
self.view_left = 0
self.view_bottom = 0
ar.set_viewport(self.view_left,
SCREEN_WIDTH + self.view_left,
self.view_bottom,
SCREEN_HEIGHT + self.view_bottom)
self.player_teleported = False
