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Multiple updates to agents.py (WumpusEnvironment and XYEnvironment) #169

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Merged
merged 3 commits into from
Mar 29, 2016
Merged

Multiple updates to agents.py (WumpusEnvironment and XYEnvironment) #169

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6392897
Created a Directions class to for 2D-Environments and started work on…
tolusalako Mar 23, 2016
3df865a
Fully implemented WumpusEnvironment following details from the book. …
Mar 24, 2016
474fe87
Fixed issue where, if there are multiple agents, dead agents get the …
Mar 27, 2016
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49 changes: 40 additions & 9 deletions agents.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@
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Expand Down Expand Up @@ -43,7 +43,7 @@
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Expand Down Expand Up @@ -82,7 +82,7 @@
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Expand All @@ -95,8 +95,8 @@
" pass\n",
"\n",
"class Park(Environment):\n",
" '''prints & return a list of things that are in our dog's location'''\n",
" def percept(self, agent):\n",
" '''prints & return a list of things that are in our agent's location'''\n",
" things = self.list_things_at(agent.location)\n",
" print(things)\n",
" return things\n",
Expand Down Expand Up @@ -151,7 +151,7 @@
},
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Expand Down Expand Up @@ -191,7 +191,7 @@
},
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Expand Down Expand Up @@ -230,17 +230,48 @@
"cell_type": "markdown",
"metadata": {},
"source": [
"That's how easy it is to implement an agent, its program, and environment. But that was a very simple case. What if our environment was 2-Dimentional instead of 1? And what if we had multiple agents?"
"That's how easy it is to implement an agent, its program, and environment. But that was a very simple case. What if our environment was 2-Dimentional instead of 1? And what if we had multiple agents?\n",
"\n",
"To make our Park 2D, we will need to make it a subclass of <b>XYEnvironment</b> instead of Environment. Also, let's add a person to play fetch with the dog."
]
},
{
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"source": [
"class Park(XYEnvironment):\n",
" def percept(self, agent):\n",
" '''prints & return a list of things that are in our agent's location'''\n",
" things = self.list_things_at(agent.location)\n",
" print(things)\n",
" return things\n",
" \n",
" def execute_action(self, agent, action):\n",
" '''changes the state of the environment based on what the agent does.'''\n",
" if action == \"move down\":\n",
" agent.movedown()\n",
" elif action == \"eat\":\n",
" items = self.list_things_at(agent.location, tclass=Food)\n",
" if len(items) != 0:\n",
" if agent.eat(items[0]): #Have the dog pick eat the first item\n",
" self.delete_thing(items[0]) #Delete it from the Park after.\n",
" elif action == \"drink\":\n",
" items = self.list_things_at(agent.location, tclass=Water)\n",
" if len(items) != 0:\n",
" if agent.drink(items[0]): #Have the dog drink the first item\n",
" self.delete_thing(items[0]) #Delete it from the Park after.\n",
" \n",
" def is_done(self):\n",
" '''By default, we're done when we can't find a live agent, \n",
" but to prevent killing our cute dog, we will or it with when there is no more food or water'''\n",
" no_edibles = not any(isinstance(thing, Food) or isinstance(thing, Water) for thing in self.things)\n",
" dead_agents = not any(agent.is_alive() for agent in self.agents)\n",
" return dead_agents or no_edibles"
]
}
],
"metadata": {
Expand Down
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