# 
# Copyright (C) 2008, Brian Tanner
# 
#http://rl-glue-ext.googlecode.com/
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#  $Revision: 446 $
#  $Date: 2009-01-23 04:20:21 +0100 (Fri, 23 Jan 2009) $
#  $Author: brian@tannerpages.com $
#  $HeadURL: http://rl-glue-ext.googlecode.com/svn/trunk/projects/codecs/Python/src/tests/test_empty_agent.py $

import random
import sys
from rlglue.agent.Agent import Agent
from rlglue.agent import AgentLoader as AgentLoader
from rlglue.types import Action
from rlglue.types import Observation

class test_empty_agent(Agent):
        whichEpisode=0
        emptyAction=Action(0,0,0)
        nonEmptyAction=Action(7,3,1)
        
        def agent_init(self,taskSpec):
                self.whichEpisode=0
                self.nonEmptyAction.intArray=(0,1,2,3,4,5,6)
                self.nonEmptyAction.doubleArray=(0.0/3.0,1.0/3.0,2.0/3.0)
                self.nonEmptyAction.charArray=('a')
                
        def agent_start(self,observation):
                self.whichEpisode=self.whichEpisode+1
                
                if self.whichEpisode%2==0:
                        return self.emptyAction
                else:
                        return self.nonEmptyAction
        
        def agent_step(self,reward, observation):
                if self.whichEpisode % 2 == 0:
                        return self.emptyAction
                else:
                        return self.nonEmptyAction
        
        def agent_end(self,reward):
                pass
        
        def agent_cleanup(self):
                pass
        
        def agent_message(self,inMessage):
                return ""
                

if __name__=="__main__":
        AgentLoader.loadAgent(test_empty_agent())
