Mercurial > parpg-source
annotate systems/scriptingsystem.py @ 161:d224bbce512a
Implemented loading scripts from files.
| author | KarstenBock@gmx.net |
|---|---|
| date | Thu, 17 Nov 2011 20:36:08 +0100 |
| parents | 75c0b728ccf3 |
| children | ed24962cdf5e |
| rev | line source |
|---|---|
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Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
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1 # This program is free software: you can redistribute it and/or modify |
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Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
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2 # it under the terms of the GNU General Public License as published by |
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Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
diff
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3 # the Free Software Foundation, either version 3 of the License, or |
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9c7a96c6fe41
Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
diff
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4 # (at your option) any later version. |
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9c7a96c6fe41
Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
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5 # |
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9c7a96c6fe41
Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
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6 # This program is distributed in the hope that it will be useful, |
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9c7a96c6fe41
Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
diff
changeset
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7 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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9c7a96c6fe41
Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
diff
changeset
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8 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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9c7a96c6fe41
Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
diff
changeset
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9 # GNU General Public License for more details. |
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9c7a96c6fe41
Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
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changeset
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10 # |
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Refactored components and began defining basic Entities and Systems.
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parents:
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11 # You should have received a copy of the GNU General Public License |
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9c7a96c6fe41
Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
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12 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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Refactored components and began defining basic Entities and Systems.
M. George Hansen <technopolitica@gmail.com>
parents:
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13 |
| 160 | 14 from collections import deque |
| 15 from copy import deepcopy | |
| 16 | |
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65
e856b604b650
Changed "import bGrease" to "import parpg.bGrease".
KarstenBock@gmx.net
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17 from parpg.bGrease import System |
| 157 | 18 |
| 19 class Script(object): | |
| 20 """Script object""" | |
| 21 | |
| 160 | 22 def __init__(self, actions, system): |
| 157 | 23 """Constructor""" |
| 24 assert(isinstance(actions, deque)) | |
| 25 self.actions = actions | |
| 160 | 26 assert(isinstance(system, ScriptingSystem)) |
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27 self.system = system |
| 160 | 28 self.reset() |
| 29 | |
| 30 def reset(self): | |
| 31 """Resets the state of the script""" | |
| 32 self.running_actions = deepcopy(self.actions) | |
| 157 | 33 self.running = False |
| 34 self.finished = False | |
| 35 self.time = 0 | |
| 36 self.wait = 0 | |
| 37 self.cur_action = None | |
| 160 | 38 |
| 157 | 39 def update(self, time): |
| 40 """Advance the script""" | |
| 41 if not self.running: | |
| 42 return | |
| 43 if self.cur_action and not self.cur_action.executed: | |
| 44 return | |
| 45 self.time += time | |
| 46 if self.wait <= self.time: | |
| 47 self.time = 0 | |
| 48 try: | |
| 160 | 49 action_data = self.running_actions.popleft() |
| 50 action = self.system.actions[action_data[0]] | |
| 51 action_params = eval(action_data[1], | |
| 52 self.system.funcs, | |
| 53 self.system.vals | |
| 54 ) | |
| 55 self.cur_action = action(self.system.world, action_params) | |
| 56 self.wait = action_data[2] | |
| 57 if len(action_data) >= 4: | |
| 58 vals = ( | |
| 59 eval(action_data[4], self.system.funcs, self.system.vals) | |
| 60 if len(action_data) > 4 | |
| 61 else () | |
| 62 ) | |
| 63 command = action_data[3] | |
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64 self.system.commands[command]( |
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65 *vals, |
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66 action=self.cur_action |
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67 ) |
| 157 | 68 else: |
| 69 self.cur_action.execute() | |
| 70 except IndexError: | |
| 71 self.finished = True | |
| 72 self.running = False | |
| 73 | |
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parents:
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74 |
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parents:
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75 class ScriptingSystem(System): |
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76 """ |
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77 System responsible for managing scripts attached to entities to define |
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M. George Hansen <technopolitica@gmail.com>
parents:
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78 their behavior. |
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parents:
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79 """ |
| 157 | 80 |
| 160 | 81 def __init__(self, commands, actions): |
| 157 | 82 """Constructor""" |
| 160 | 83 self.funcs = {} |
| 157 | 84 self.vals = {} |
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85 self.commands = commands |
| 160 | 86 self.actions = actions |
| 87 self.game_state = None | |
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88 self.reset() |
| 157 | 89 |
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90 def reset(self): |
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91 """Resets the script and condition collections""" |
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92 self.scripts = {} |
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93 self.conditions = [] |
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94 |
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95 |
| 157 | 96 def step(self, dt): |
| 97 """Execute a time step for the system. Must be defined | |
| 98 by all system classes. | |
| 99 | |
| 100 :param dt: Time since last step invocation | |
| 101 :type dt: float | |
| 102 """ | |
| 160 | 103 self.vals.clear() |
| 104 self.vals.update( | |
| 105 self.game_state.getObjectDictOfMap( | |
| 106 self.game_state.current_map_name) | |
| 107 ) | |
| 108 self.funcs.clear() | |
| 109 self.funcs.update(self.game_state.funcs) | |
| 110 for condition_data in self.conditions: | |
| 111 condition = condition_data[0] | |
| 112 script_name = condition_data[1] | |
| 113 if not self.scripts.has_key(script_name): | |
| 114 return | |
| 115 script = self.scripts[script_name] | |
| 116 if eval(condition, self.funcs, self.vals) and not script.running: | |
| 117 script.running = True | |
| 118 for script in self.scripts.itervalues(): | |
| 157 | 119 assert(isinstance(script, Script)) |
| 120 if script.finished: | |
| 160 | 121 script.reset() |
| 157 | 122 elif script.running: |
| 123 script.update(dt) | |
| 160 | 124 |
| 125 def setScript(self, name, actions): | |
| 126 """Sets a script. | |
| 127 @param name: The name of the script | |
| 128 @param actions: What the script does | |
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129 @type actions: deque or iterable |
| 160 | 130 """ |
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131 if not(isinstance(actions, deque)): |
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132 actions = deque(actions) |
| 160 | 133 self.scripts[name] = Script(actions, |
| 134 self | |
| 135 ) | |
| 136 | |
| 137 def addCondition(self, condition, script_name): | |
| 138 """Adds a condition. | |
| 139 @param condition: Condition which will be evaluated | |
| 140 @param script_name: Name of the script that will be executed if the | |
| 141 condition evaluates to True. | |
| 142 """ | |
| 143 self.conditions.append((condition, script_name)) | |
| 144 | |
| 145 | |
| 146 def runScript(self, name): | |
| 147 """Runs a script with the given name | |
| 148 @param name: The name of the script""" | |
| 149 if self.scripts.has_key(name): | |
| 150 self.scripts[name].running = True | |
| 151 | |
| 152 |