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
|
/*
* Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
package javax.media.j3d;
import java.util.Enumeration;
/**
* An abstract class specifying a single wakeup Condition. This class
* is extended by the WakeupCriterion, WakeupOr, WakeupAnd,
* WakeupOrOfAnds, and WakeupAndOfOr classes. A Behavior node hands a
* WakeupCondition object to the behavior scheduler and the behavior
* scheduler hands back an enumeration of that WakeupCondition.
*/
public abstract class WakeupCondition extends Object {
static final int ALL_ELEMENTS = 0;
static final int TRIGGERED_ELEMENTS = 1;
/**
* This boolean indicates whether this condition has been fully met.
*/
boolean conditionMet = false;
/**
* This points to the parent of this criterion in the AndOr tree
*/
WakeupCondition parent = null;
/**
* The location of this criterion in the parents array.
*/
int id;
/**
* The BehaviorRetained node that is using this condition
*/
BehaviorRetained behav = null;
/**
* This is the allElements enumerator
*/
WakeupCriteriaEnumerator allEnum = null;
/**
* This is the triggeredElements enumerator
*/
WakeupCriteriaEnumerator trigEnum = null;
// Use in WakeupIndexedList
int listIdx[][];
/**
* Returns an enumeration of all WakeupCriterias in this Condition.
*/
public Enumeration allElements() {
if (allEnum == null) {
allEnum = new WakeupCriteriaEnumerator(this, ALL_ELEMENTS);
} else {
allEnum.reset(this, ALL_ELEMENTS);
}
return allEnum;
}
/**
* Returns an enumeration of all triggered WakeupCriterias in this Condition.
*/
public Enumeration triggeredElements() {
if (trigEnum == null) {
trigEnum = new WakeupCriteriaEnumerator(this, TRIGGERED_ELEMENTS);
} else {
trigEnum.reset(this, TRIGGERED_ELEMENTS);
}
return trigEnum;
}
/**
* this sets the conditionMet flag.
*/
void setConditionMet(int id, Boolean checkSchedulingRegion) {
if (!conditionMet) {
conditionMet = true;
J3dMessage message = new J3dMessage();
message.type = J3dMessage.COND_MET;
message.threads = J3dThread.UPDATE_BEHAVIOR;
message.universe = behav.universe;
message.args[0] = behav;
message.args[1] = checkSchedulingRegion;
message.args[2] = this;
VirtualUniverse.mc.processMessage(message);
}
}
/**
* Initialize And/Or tree and add criterion to the BehaviourStructure
*/
void buildTree(WakeupCondition parent, int id, BehaviorRetained b){
this.parent = parent;
this.behav = b;
this.id = id;
conditionMet = false;
}
/**
* This goes through the AndOr tree to remove the various criterion from the
* BehaviorStructure.
* We can't use behav.universe.behaviorStructure since behav
* may reassign to another universe at this time.
*/
void cleanTree(BehaviorStructure bs) {
conditionMet = false;
}
void reInsertElapseTimeCond() {
conditionMet = false;
}
void resetTree() {
conditionMet = false;
}
}
|
