Mercurial > parpg-core

annotate src/parpg/gamestate.py @ 146:6e1eb964a6e5

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Fixed dropping items on the map.
author KarstenBock@gmx.net
date Mon, 03 Oct 2011 18:25:31 +0200
parents 0ffebdca7ba3
children 191f89a22303
rev   line source
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1 # This file is part of PARPG.
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2
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3 # PARPG is free software: you can redistribute it and/or modify
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4 # it under the terms of the GNU General Public License as published by
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5 # the Free Software Foundation, either version 3 of the License, or
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6 # (at your option) any later version.
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7
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8 # PARPG is distributed in the hope that it will be useful,
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9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 # GNU General Public License for more details.
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12
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13 # You should have received a copy of the GNU General Public License
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14 # along with PARPG. If not, see <http://www.gnu.org/licenses/>.
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15
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16 from parpg.quest_engine import QuestEngine
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17
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18 class GameState(object):
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19 """This class holds the current state of the game."""
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20 def __init__(self, quests_dir = None):
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21 self.player_character = None
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22 self.quest_engine = QuestEngine(quests_dir)
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23 self.quest_engine.readQuests()
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24 self.objects = {}
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25 self.object_ids = {}
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26 self.current_map_name = None
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27 self.maps = {}
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28 self.npcs_met = set()
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30
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31 def addObject(self, object_id, map_id, game_object):
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32 """Adds an object to the objects and object_ids
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33 dictionaries.
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34 @param object_id: ID of the object
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35 @type object_id: str
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36 @param map_id: ID of the map the object is on.
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37 If the object is in a container this has to be None
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38 @type map_id: str or None
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39 @param object: object to be added
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40 @type object: GameObject
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41 """
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42 if not self.object_ids.has_key(object_id):
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43 if not self.objects.has_key(map_id):
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44 self.objects[map_id] = {}
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45 self.objects[map_id][object_id] = game_object
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46 self.object_ids[object_id] = map_id
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47
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48 def deleteObject(self, object_id):
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49 """Removes an object from the dictionaries
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50 @param object_id: ID of the object
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51 @type object_id: str
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52 @returns The deleted object
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53 """
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54 if self.hasObject(object_id):
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55 map_id = self.getMapOfObject(object_id)
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56 if map_id:
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57 inst = self.maps[map_id].agent_layer.getInstance(object_id)
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58 self.maps[map_id].agent_layer.deleteInstance(inst)
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59 obj = self.objects[map_id][object_id]
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60 del self.objects[map_id][object_id]
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61 del self.object_ids[object_id]
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62 return obj
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63 return None
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64
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65
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66 def getObjectsFromMap(self, map_id):
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67 """Gets all objects that are currently on the given map.
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68 @type map: String
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69 @param map: The map name.
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70 @returns: The list of objects on this map. Or an empty list"""
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71 if map_id in self.objects:
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72 return [i for i in self.objects[map_id].values() \
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73 if map_id in self.objects]
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74
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75 return {}
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76
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77 def deleteObjectsFromMap(self, map_id):
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78 """Deletes all objects of the given map.
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79 @type map: String
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80 @param map: The map name.
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81 @returns: None"""
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82 deleted_objs = []
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83 if map_id in self.objects:
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84 for obj in self.objects[map_id].copy():
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85 deleted_objs.append(self.deleteObject(obj))
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86 return deleted_objs
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87
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88 def hasObject(self, object_id):
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89 """Check if an object with the given id is present
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90 @param object_id: ID of the object
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91 @type object_id: str
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92 @return: True if there is an object False if not
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93 """
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94 return self.object_ids.has_key(object_id)
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95
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96 def getMapOfObject(self, object_id):
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97 """Returns the map the object is on.
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98 @param object_id: ID of the object
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99 @type object_id: str
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100 @return: Name of the map the object is on.
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101 If there is no such object or the object is in a container None is returned
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102 """
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103 if self.object_ids.has_key(object_id):
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104 return self.object_ids[object_id]
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105 return None
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106
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107 def getObjectById(self, obj_id, map_id = None):
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108 """Gets an object by its object id and map id
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109 @type obj_id: String
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110 @param obj_id: The id of the object.
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111 @type map_id: String
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112 @param map_id: It id of the map containing the object.
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113 @returns: The object or None."""
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114 if not map_id:
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115 map_id = self.getMapOfObject(obj_id)
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116 if not map_id in self.objects:
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117 self.objects[map_id] = {}
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118 if obj_id in self.objects[map_id]:
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119 return self.objects[map_id][obj_id]
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120
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121 def clearObjects(self):
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122 """Delete all objects from the state
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123 """
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124 self.objects = {}
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125 self.object_ids = {}
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126
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127 def getStateForSaving(self):
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128 """Prepares state for saving
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129 @type state: dictionary
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130 @param state: State of the object
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131 """
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132 ret_dict = {}
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133 ret_dict["CurrentMap"] = self.current_map_name
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134 ret_dict["Quests"] = self.quest_engine.getStateForSaving()
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135 ret_dict["NPCsMet"] = self.npcs_met
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136 return ret_dict
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137
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138 def restoreFromState(self, state):
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139 """Restores the state"""
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140 self.current_map_name = state["CurrentMap"]
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141 self.npcs_met = state["NPCsMet"]
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142 self.quest_engine.readQuests()
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143 self.quest_engine.restoreFromState(state["Quests"])
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144
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145 def meet(self, npc):
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146 """Record that the PC has met a certain NPC
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147 @type npc: str
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148 @param npc: The NPC's name or id"""
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149 if npc in self.npcs_met:
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150 # we could raise an error here, but should probably be a warn
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151 # raise RuntimeError("I already know %s" % npc)
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152 return
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153 self.npcs_met.add(npc)
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154
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155 def met(self, npc):
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156 """Indicate whether the PC has met this npc before
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157 @type npc: str
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158 @param npc: The NPC's name or id
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159 @return: None"""
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160 return npc in self.npcs_met