def __init__(self, sheetName, frames, frameWidth, frameHeight,
framePerRow):
"""
Initialize the animated sprite.
"""
# call the super
super(AnimatedSprite, self).__init__()
# if the sheet is not exists...
# TODO: prove it
#if AnimatedSprite.sheet is None:
# AnimatedSprite.sheet = pygame.image.load(sheetName)
self.sheet = pygame.image.load(sheetName)
# initialize values
#self.sheet = AnimatedSprite.sheet
self.maxFrames = frames
self.frameWidth = frameWidth
self.frameHeight = frameHeight
self.framePerRow = framePerRow
self.stepToFrame(self.currentFrame)
self.spriteAnimation = AnimatedValue(0, 0,
1, False, False)
def startAnimation(self, startFrame, endFrame, timeInterval, loop):
"""
Starts the animation.
"""
self.spriteAnimation = AnimatedValue(startFrame, endFrame,
timeInterval, loop)
class AnimatedSprite(pygame.sprite.Sprite):
"""
This class represents an animated Sprite.
The sprite animation based on a sprite sheet.
Sprite sheets: http://www.codeandweb.com/what-is-a-sprite-sheet
TODO: implement pause
TODO: implement named animations
"""
currentFrame = 0 # the current frame
maxFrames = 28 # the maximum frame
framePerRow = 7 # frames per row
frameWidth = 64 # frame's width
frameHeight = 64 # frame's height
sheet = None # the sprite sheet
spriteRect = None # rect to draw the current frame
# the program moves this frame on the sheet
spriteAnimation = None # the animated value, the current frame calc.
_lastFrame = -1 # the last rendered frame
def __init__(self, sheetName, frames, frameWidth, frameHeight,
framePerRow):
"""
Initialize the animated sprite.
"""
# call the super
super(AnimatedSprite, self).__init__()
# if the sheet is not exists...
# TODO: prove it
#if AnimatedSprite.sheet is None:
# AnimatedSprite.sheet = pygame.image.load(sheetName)
self.sheet = pygame.image.load(sheetName)
# initialize values
#self.sheet = AnimatedSprite.sheet
self.maxFrames = frames
self.frameWidth = frameWidth
self.frameHeight = frameHeight
self.framePerRow = framePerRow
self.stepToFrame(self.currentFrame)
self.spriteAnimation = AnimatedValue(0, 0,
1, False, False)
def stepToFrame(self, frame):
"""
Steps the current frame to the parameter.
"""
self.currentFrame = frame
if self.currentFrame >= self.maxFrames:
self.currentFrame = 0
elif self.currentFrame < 0:
self.currentFrame = self.maxFrames
# calculates the the current frame's rect
topx = self.currentFrame % self.framePerRow * self.frameWidth
topy = int(self.currentFrame / self.framePerRow)
topy *= self.frameHeight
self.spriteRect = pygame.Rect(
topx, topy,
self.frameWidth, self.frameHeight)
def startAnimation(self, startFrame, endFrame, timeInterval, loop):
"""
Starts the animation.
"""
self.spriteAnimation = AnimatedValue(startFrame, endFrame,
timeInterval, loop)
def stopAnimation(self):
self.spriteAnimation.stopAnimation()
def update(self):
"""
Updates the sprite
"""
frame = round(self.spriteAnimation.getCurrentValue())
if frame != self._lastFrame:
self.stepToFrame(frame)
self._lastFrame = frame
def drawSprite(self, surface, location):
"""
Draws the sprite on the parameter surface.
"""
surface.blit(self.sheet, location, self.spriteRect)
