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1 # This program is free software: you can redistribute it and/or modify
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2 # it under the terms of the GNU General Public License as published by
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3 # the Free Software Foundation, either version 3 of the License, or
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4 # (at your option) any later version.
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5 #
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6 # This program is distributed in the hope that it will be useful,
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7 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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8 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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9 # GNU General Public License for more details.
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10 #
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11 # You should have received a copy of the GNU General Public License
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12 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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13
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14 from parpg.grease import System
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15 from parpg.components import container
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16
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17 class Container(System):
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18 """System that controls changes to containers"""
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19
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20 def __init__(self, drag_container,
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21 container_component="container",
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22 containable_component="containable"
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23 ):
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24 """Constructor"""
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25 self.drag_container = drag_container
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26 self.container_component = container_component
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27 self.containable_component = containable_component
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28 self.on_bulk_to_big = []
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29
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30 def step(self, dt):
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31 """Perform changes to containers and items"""
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32 assert self.world is not None, "Cannot run with no world set"
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33 for containable in self.world.components.join(
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34 self.containable_component
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35 ):
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36 if containable.new_container:
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37 new_container = containable.new_container
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38 new_slot = containable.new_slot
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39 bulk_add = containable.bulk
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40 if new_slot >= 0 and new_slot < len(new_container.children):
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41 bulk_add -= new_container.children[new_slot].bulk
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42 elif new_slot >= len(new_container.children):
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43 new_slot = -1
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44 bulk = get_bulk(new_container) + bulk_add
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45 if bulk < new_container.max_bulk:
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46 if new_slot >= 0:
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47 new_container.children.insert(new_slot + 1, containable)
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48 containable.current_container = new_container
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49 old_containable = new_container.children.pop(new_slot)
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50 old_containable.current_container = drag_container
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51 drag_container.children = [old_containable]
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52 else:
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53 for listener in self.on_bulk_to_big:
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54 listener(bulk, new_container.max_bulk)
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55
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56 |
