Repository navigation
Expand file tree
/
Copy pathEnvironment.java
More file actions
154 lines (115 loc) · 2.67 KB
/
Copy pathEnvironment.java
File metadata and controls
154 lines (115 loc) · 2.67 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
package aima.basic;
import java.util.ArrayList;
import java.util.List;
/**
* Artificial Intelligence A Modern Approach (2nd Edition): page 32.
*
* Environment.
*/
/**
* @author Ravi Mohan
*
*/
public abstract class Environment {
protected ArrayList<EnvironmentObject> objects;
protected ArrayList<Agent> agents;
protected ArrayList<BasicEnvironmentView> views;
public abstract void executeAction(Agent a, String act);
public abstract Percept getPerceptSeenBy(Agent anAgent);
protected Environment() {
agents = new ArrayList<Agent>();
objects = new ArrayList<EnvironmentObject>();
views = new ArrayList<BasicEnvironmentView>();
}
public void registerView(BasicEnvironmentView bev) {
views.add(bev);
}
public void updateViews(String command) {
for (BasicEnvironmentView view : views) {
view.envChanged(command);
}
}
public boolean isDone() {
for (Agent agent : agents) {
if (agent.isAlive()) {
return false;
}
}
return true;
}
public void createExogenousChange() {
}
public void step() {
if (!(this.isDone())) {
for (Agent agent : agents) {
String anAction = agent.execute(this.getPerceptSeenBy(agent));
updateViews(anAction);
this.executeAction(agent, anAction);
}
this.createExogenousChange();
}
}
public void step(int n) {
for (int i = 0; i < n; i++) {
step();
}
}
public void stepUntilNoOp() {
while (!(this.isDone())) {
step();
}
}
public ArrayList getAgents() {
return agents;
}
public ArrayList getObjects() {
return objects;
}
public boolean alreadyContains(EnvironmentObject o) {
boolean retval = false;
for (EnvironmentObject eo : objects) {
if (eo.equals(o)) {
retval = true;
}
}
return retval;
}
public boolean alreadyContains(Agent anAgent) {
boolean retval = false;
for (Agent agent : agents) {
if (agent.equals(anAgent)) {
retval = true;
}
}
return retval;
}
public void addAgent(Agent a, String attributeName, Object attributeValue) {
if (!(alreadyContains(a))) {
a.setAttribute(attributeName, attributeValue);
agents.add(a);
}
}
public void addObject(EnvironmentObject o, String attributeName,
Object attributeValue) {
if (!(alreadyContains(o))) {
o.setAttribute(attributeName, attributeValue);
objects.add(o);
}
}
public void addObject(EnvironmentObject o) {
if (!(alreadyContains(o))) {
objects.add(o);
}
}
public void addAgent(Agent a) {
if (!(alreadyContains(a))) {
agents.add(a);
}
}
public List<ObjectWithDynamicAttributes> getAllObjects() {
List<ObjectWithDynamicAttributes> l = new ArrayList<ObjectWithDynamicAttributes>();
l.addAll(objects);
l.addAll(agents);
return l;
}
}