a-robots-conundrum/robotgame/block.py

# This file is part of ROBOTGAME
#
# ROBOTGAME is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# ROBOTGAME is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# ROBOTGAME.  If not, see <http://www.gnu.org/licenses/>.
#
# ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
#
#                          block.py
#                     --------------------
#       date created : Tue Aug 7 2012
#          copyright : (C) 2012 Sakse Dalum
#      maintained by : Sakse Dalum <don_s@hongabar.org>

"""
A generic block. And other block derivatives.
"""

import pygame

import worldobject

class Block(worldobject.WorldObject):
    def __init__(self, level, x, y, img, movable=False):
        self.__dict__.update(locals())
        worldobject.WorldObject.__init__(self, level, x, y, movable=movable)

        self.orig_alpha = pygame.surfarray.array_alpha(self.img)

    def update_alpha(self):
        if (self.y + self.z >= self.level.player.y + self.level.player.z):
            self.set_alpha(0.5)
        else:
            self.set_alpha(1)

    def use(self, obj):
        if self.movable:
            if obj == self.holder:
                obj.holding = None
                self.holder = None
            else:
                obj.holding = self
                self.holder = obj

    def draw(self, window):
        window.blit(self.img, (self.x - 32 - self.level.camera_x,
                               self.y - self.img.get_size()[1] + 24
                               - self.level.camera_y))

class ArrowBlock(Block):
    def __init__(self, level, x, y, direction, movable=True, is_up=True):
        self.__dict__.update(locals())
        worldobject.WorldObject.__init__(self, level, x, y,
                                         direction=direction, movable=movable)

        self.frame = 0
        self.anim_speed = 15
        self.setting = False

        if direction == (1, 0):
            self.anim = 'arrow_right'
        if direction == (-1, 0):
            self.anim = 'arrow_left'
        if direction == (0, -1):
            self.anim = 'arrow_up'
        if direction == (0, 1):
            self.anim = 'arrow_down'

    def activate(self, setting):
        self.movable = True
        if not self.share_tile(worldobject.WorldObject):
            self.is_up = not setting
        self.movable = False

    def update(self, e, t, dt):
        # Update the animation
        if not self.is_up:
            self.frame = min(self.frame + self.anim_speed * dt,
                             len(self.level.imgs[self.anim]) - 1)
        else:
            self.frame = max(self.frame - self.anim_speed * dt,
                             0)

        if self.frame == len(self.level.imgs[self.anim]) - 1:
            self.movable = self.blocking = False
            self.z = -48
            if self.holder:
                self.holder.holding = None
                self.holder = None
        else:
            self.movable = self.blocking = True
            self.z = 0

        worldobject.WorldObject.update(self, e, t, dt)

    def draw(self, window):
        self.img = self.level.imgs[self.anim][int(self.frame)]
        Block.draw(self, window)