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#! /usr/bin/env python
"""
Creation of PacMath sprite and movement
@license: U{http://creativecommons.org/licenses/by-sa/3.0/us/}
"""
from basicMovement import basicMovement
import pygame
import sys
class pacmanMovement(pygame.sprite.Sprite):
def __init__(self):
"""
Creates a PacMath sprite
"""
pygame.sprite.Sprite.__init__(self)
self.name = 'PacMath'
self.ppl = False
self.imageIndex = 1 #image index
# Save a copy of the screen's rectangle
self.screen = pygame.display.get_surface().get_rect()
#initialize the move instance
self.move = basicMovement()
self.image = {}
self.image[0] = pygame.image.load('./images/pacmanu.png').convert_alpha()
self.image[1] = pygame.image.load('./images/pacmanr.png').convert_alpha()
self.image[2] = pygame.image.load('./images/pacmand.png').convert_alpha()
self.image[3] = pygame.image.load('./images/pacmanl.png').convert_alpha()
self.image[4] = pygame.image.load('./images/pacman.png').convert_alpha()
# Create a variable to store the previous position of the sprite
self.old = self.image[0].get_rect()
self.old.x = 300
self.old.y = 350
# Create a variable to store the current position of the sprite
self.rect = self.image[0].get_rect()
self.rect.x = 300
self.rect.y = 350
def update(self, screen, event, MAZE_SIZE, mazeObj):
"""
Updates Pacmath sprite when directional key is pressed
@param screen: the screen in which we will draw
@type event: pygame.event.Event
@param event: directional key
@param MAZE_SIZE: size of maze
@type mazeObj: Maze
@param mazeObj: an instance of the maze
"""
# call basic movement and add any other update
amount = [0, 0]
#speed/incremental value
speed = 25
pacmanEvent = 0
moving = self.move.getMoving()
if moving == True:
# Check for movement
if event.type == pygame.KEYUP:
#keep going in the same direction
dx = self.rect.x - self.old.x
dy = self.rect.y - self.old.y
amount = [dx, dy]
pacmanEvent = self.move.update(screen, self, amount, MAZE_SIZE, mazeObj)
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
self.move.moving = True
amount = [-speed, 0]
pacmanEvent = self.move.update(screen, self, amount, MAZE_SIZE, mazeObj)
self.imageIndex = 3
elif event.key == pygame.K_UP:
self.move.moving = True
amount = [0, -speed]
pacmanEvent = self.move.update(screen, self, amount, MAZE_SIZE, mazeObj)
self.imageIndex = 0
elif event.key == pygame.K_RIGHT:
self.move.moving = True
amount = [speed, 0]
pacmanEvent = self.move.update(screen, self, amount, MAZE_SIZE, mazeObj)
self.imageIndex = 1
elif event.key == pygame.K_DOWN:
self.move.moving = True
amount = [0, speed]
pacmanEvent = self.move.update(screen, self, amount, MAZE_SIZE, mazeObj)
self.imageIndex = 2
# Create a Surface the size of our character
blank = pygame.Surface((self.rect.width, self.rect.height))
blank.fill((0, 0, 0))
# Erase the old position by putting our blank Surface on it
screen.blit(blank, self.old)
# Draw the new position
screen.blit(self.image[self.imageIndex], self.rect)
# Update ONLY the modified areas of the screen
pygame.display.update([self.old, self.rect])
return pacmanEvent
def clearSelf(self, screen, mazeObj):
"""
Draws the grid square occupied by pacman at the location in 'rect'
@type screen: pygame.display
@param screen: the screen in which we will draw
@type mazeObj: Maze
@param mazeObj: an instance of the maze
"""
gridX = int(round(self.rect.x/MAZE_SIZE, 0) )
gridY = int(round(self.rect.y/MAZE_SIZE, 0) )
mazeObj.drawPoint(screen, gridX, gridY)
pygame.display.update(self.rect)
def drawSelf(self, screen):
"""
Draws pacman's image onto the screen at the location in 'rect'
@type screen: pygame.display
@param screen: the screen in which we will draw
"""
screen.blit(self.images[self.imageIndex], self.rect)
pygame.display.update(self.rect)
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