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coin.py
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coin.py
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import pygame as pg
from .. import setup
from .. import constants as c
from . import score
class Coin(pg.sprite.Sprite):
"""Coins found in boxes and bricks"""
def __init__(self, x, y, score_group):
pg.sprite.Sprite.__init__(self)
self.sprite_sheet = setup.GFX['item_objects']
self.frames = []
self.frame_index = 0
self.animation_timer = 0
self.state = c.SPIN
self.setup_frames()
self.image = self.frames[self.frame_index]
self.rect = self.image.get_rect()
self.rect.centerx = x
self.rect.bottom = y - 5
self.gravity = 1
self.y_vel = -15
self.initial_height = self.rect.bottom - 5
self.score_group = score_group
def get_image(self, x, y, width, height):
"""Get the image frames from the sprite sheet"""
image = pg.Surface([width, height]).convert()
rect = image.get_rect()
image.blit(self.sprite_sheet, (0, 0), (x, y, width, height))
image.set_colorkey(c.BLACK)
image = pg.transform.scale(image,
(int(rect.width * c.SIZE_MULTIPLIER),
int(rect.height * c.SIZE_MULTIPLIER)))
return image
def setup_frames(self):
"""create the frame list"""
self.frames.append(self.get_image(52, 113, 8, 14))
self.frames.append(self.get_image(4, 113, 8, 14))
self.frames.append(self.get_image(20, 113, 8, 14))
self.frames.append(self.get_image(36, 113, 8, 14))
def update(self, game_info, viewport):
"""Update the coin's behavior"""
self.current_time = game_info[c.CURRENT_TIME]
self.viewport = viewport
if self.state == c.SPIN:
self.spinning()
def spinning(self):
"""Action when the coin is in the SPIN state"""
self.image = self.frames[self.frame_index]
self.rect.y += self.y_vel
self.y_vel += self.gravity
if (self.current_time - self.animation_timer) > 80:
if self.frame_index < 3:
self.frame_index += 1
else:
self.frame_index = 0
self.animation_timer = self.current_time
if self.rect.bottom > self.initial_height:
self.kill()
self.score_group.append(score.Score(self.rect.centerx - self.viewport.x,
self.rect.y,
200))