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Pause background music to play again later?

[1 Reply]
- 24-Apr-2013 08:18 AM
- Forum: Core Library Questions
I'm making a game in processing that has different background music in different scenes, and am using the minim library for AudioPlayer.

Currently, what I'm doing is importing/opening both audio files in my setup() function, calling player1.play() when the user triggers that scene, then when the user triggers the next scene, I call player1.close() and player2.play() to stop the first song and play the second one, and then player2.close() when that scene ends to stop the music.

Of course, if I want the user to be able to run this music again because he's playing the game through a second time, that's an issue because I've closed player1 and player2 and it causes a NullPointerException.

Is there a function/method for the audio player that allows me to temporarily stop/pause the background music from playing so that I can .play() it again later?

Difficulty finding NullPointerException

[6 Replies]
- 22-Apr-2013 08:55 AM
- Forum: Programming Questions
Hey, I'm trying to write a simple processing game that involves several PShapes. I keep getting a NullPointerException, but can't seem to identify where it is. The full error I'm getting is:
2. Exception in thread "main" java.lang.RuntimeException: java.lang.NullPointerException
3. at processing.core.PApplet.runSketch(PApplet.java:9869)
4. at processing.core.PApplet.main(PApplet.java:9678)
5. Caused by: java.lang.NullPointerException
6. at processing.core.PApplet.loadShape(PApplet.java:10788)
7. at MakeYourOwnShake.<init>(MakeYourOwnShake.java:33)
8. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
9. at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
10. at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
11. at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
12. at java.lang.Class.newInstance0(Class.java:355)
13. at java.lang.Class.newInstance(Class.java:308)
14. at processing.core.PApplet.runSketch(PApplet.java:9867)
15. ... 1 more
I went through and checked the file names against the .svg's in my data file, and they all seem to match, but I'm still getting the error. Here is my current code, it's mostly just a bunch of initializing variables and shapes at this point:
2. boolean startPage = true,
3. chooseChars = false,
4. chooseScene = false,
5. chooseNumber = false,
6. reviewPage = false,
7. danceyTime1 = false,
8. danceyTime2 = false,
9. pose1 = true;
10. int selectedChars = 1,
11. selectedScene = 1,
12. selectedNumber = 1,
13. dance1cycles = 0,
14. dance2cycles = 0;
16. //////////////////////////////////////////////////////////////////////////
17. /****setup screens****/
18. //main pieces
19. PShape backgroundGradient = loadShape("backgroundGradient.svg");//
20. PShape hostCat = loadShape("hostCat.svg");//
21. PShape startScreenMessage = loadShape("startScreenMessage.svg");//
22. PShape chooseCharsMessage = loadShape("chooseCharsMessage.svg");//
23. PShape chooseSceneMessage = loadShape("chooseSceneMessage.svg");//
24. PShape chooseNumberMessage = loadShape("chooseNumberMessage.svg");//
25. PShape reviewMessage = loadShape("reviewMessage.svg");//
27. //individual words
28. PShape wordThree = loadShape("wordThree.svg");//
29. PShape wordFive = loadShape("wordFive.svg");//
30. PShape wordSix = loadShape("wordSix.svg");//
31. PShape wordEight = loadShape("wordEight.svg");//
32. PShape wordTen = loadShape("wordTen.svg");//
33. PShape wordFifteen = loadShape("wordFifteen.svg");//
35. PShape wordLitterBox = loadShape("wordLitterBox.svg");//
36. PShape wordRoof = loadShape("wordRoof.svg");//
37. PShape wordCardboardBox = loadShape("wordCardboardBox.svg");//
38. PShape wordCatBed = loadShape("wordCatBed.svg");//
39. PShape wordByFood = loadShape("wordByFood.svg");//
40. PShape wordCouch = loadShape("wordCouch.svg");//
42. PShape wordCats = loadShape("wordCats.svg");//
43. PShape wordBlackCats = loadShape("wordBlackCats.svg");//
44. PShape wordHumans = loadShape("wordHumans.svg");//
45. PShape wordMice = loadShape("wordMice.svg");//
46. PShape wordKittens = loadShape("wordKittens.svg");//
47. PShape wordBrownBags = loadShape("wordBrownBags.svg");//
50. /****background scenes****/
51. PShape litterBoxScene = loadShape("litterBoxScene.svg");//
52. PShape roofScene = loadShape("roofScene.svg");//
53. PShape cardboardBoxScene = loadShape("cardboardBoxScene.svg");//
54. PShape catBedScene = loadShape("catBedScene.svg");//
55. PShape byFoodScene = loadShape("byFoodScene.svg");//
56. PShape couchScene = loadShape("couchScene.svg");//
59. /**** character shapes ****/
60. //bags
61. PShape bag1pose1 = loadShape("bag1pose1.svg");//
62. PShape bag1pose2 = loadShape("bag1pose2.svg");//
63. PShape bag1pose3 = loadShape("bag1pose3.svg");//
64. PShape bag1pose4 = loadShape("bag1pose4.svg");//
65. PShape bag1pose5 = loadShape("bag1pose5.svg");//
66. PShape bag1pose6 = loadShape("bag1pose6.svg");//
67. PShape bag2pose1 = loadShape("bag2pose1.svg");//
68. PShape bag2pose2 = loadShape("bag2pose2.svg");//
69. PShape bag2pose3 = loadShape("bag2pose3.svg");//
70. PShape bag2pose4 = loadShape("bag2pose4.svg");//
71. PShape bag2pose5 = loadShape("bag2pose5.svg");//
72. PShape bag2pose6 = loadShape("bag2pose6.svg");//
74. //humans
75. PShape human1pose1 = loadShape("human1pose1.svg");//
76. PShape human1pose2 = loadShape("human1pose2.svg");//
77. PShape human2pose1 = loadShape("human2pose1.svg");//
78. PShape human2pose2 = loadShape("human2pose2.svg");//
79. PShape human3pose1 = loadShape("human3pose1.svg");//
80. PShape human3pose2 = loadShape("human3pose2.svg");//
81. PShape human4pose1 = loadShape("human4pose1.svg");//
82. PShape human4pose2 = loadShape("human4pose2.svg");//
83. PShape human5pose1 = loadShape("human5pose1.svg");//
84. PShape human5pose2 = loadShape("human5pose2.svg");//
85. PShape human6pose1 = loadShape("human6pose1.svg");//
86. PShape human6pose2 = loadShape("human6pose2.svg");//
88. //mice
89. PShape mouse1pose1 = loadShape("mouse1pose1.svg");//
90. PShape mouse1pose2 = loadShape("mouse1pose2.svg");//
91. PShape mouse2pose1 = loadShape("mouse2pose1.svg");//
92. PShape mouse2pose2 = loadShape("mouse2pose2.svg");//
93. PShape mouse3pose1 = loadShape("mouse3pose1.svg");//
94. PShape mouse3pose2 = loadShape("mouse3pose2.svg");//
95. PShape mouse4pose1 = loadShape("mouse4pose1.svg");//
96. PShape mouse4pose2 = loadShape("mouse4pose2.svg");//
97. PShape mouse5pose1 = loadShape("mouse5pose1.svg");//
98. PShape mouse5pose2 = loadShape("mouse5pose2.svg");//
100. //plain cats
101. PShape cat1pose1 = loadShape("cat1pose1.svg");//
102. PShape cat1pose2 = loadShape("cat1pose2.svg");//
103. PShape cat2pose1 = loadShape("cat2pose1.svg");//
104. PShape cat2pose2 = loadShape("cat2pose2.svg");//
105. PShape cat3pose1 = loadShape("cat3pose1.svg");//
106. PShape cat3pose2 = loadShape("cat3pose2.svg");//
107. PShape cat4pose1 = loadShape("cat4pose1.svg");//
108. PShape cat4pose2 = loadShape("cat4pose2.svg");//
109. PShape cat5pose1 = loadShape("cat5pose1.svg");//
110. PShape cat5pose2 = loadShape("cat5pose2.svg");//
111. PShape cat6pose1 = loadShape("cat6pose1.svg");//
112. PShape cat6pose2 = loadShape("cat6pose2.svg");//
113. PShape cat7pose1 = loadShape("cat7pose1.svg");//
114. PShape cat7pose2 = loadShape("cat7pose2.svg");//
115. PShape cat8pose1 = loadShape("cat8pose1.svg");//
116. PShape cat8pose2 = loadShape("cat8pose2.svg");//
117. PShape cat9pose1 = loadShape("cat9pose1.svg");//
118. PShape cat9pose2 = loadShape("cat9pose2.svg");//
119. PShape cat10pose1 = loadShape("cat10pose1.svg");//
120. PShape cat10pose2 = loadShape("cat10pose2.svg");//
122. //black cats
123. PShape bcat1pose1 = loadShape("bcat1pose1.svg");//
124. PShape bcat1pose2 = loadShape("bcat1pose2.svg");//
125. PShape bcat2pose1 = loadShape("bcat2pose1.svg");//
126. PShape bcat2pose2 = loadShape("bcat2pose2.svg");//
127. PShape bcat3pose1 = loadShape("bcat3pose1.svg");//
128. PShape bcat3pose2 = loadShape("bcat3pose2.svg");//
129. PShape bcat4pose1 = loadShape("bcat4pose1.svg");//
130. PShape bcat4pose2 = loadShape("bcat4pose2.svg");//
131. PShape bcat5pose1 = loadShape("bcat5pose1.svg");//
132. PShape bcat5pose2 = loadShape("bcat5pose2.svg");//
133. PShape bcat6pose1 = loadShape("bcat6pose1.svg");//
134. PShape bcat6pose2 = loadShape("bcat6pose2.svg");//
135. PShape bcat7pose1 = loadShape("bcat7pose1.svg");//
136. PShape bcat7pose2 = loadShape("bcat7pose2.svg");//
137. PShape bcat8pose1 = loadShape("bcat8pose1.svg");//
138. PShape bcat8pose2 = loadShape("bcat8pose2.svg");//
139. PShape bcat9pose1 = loadShape("bcat9pose1.svg");//
140. PShape bcat9pose2 = loadShape("bcat9pose2.svg");//
141. PShape bcat10pose1 = loadShape("bcat10pose1.svg");//
142. PShape bcat10pose2 = loadShape("bcat10pose2.svg");//
144. //kittens
145. PShape kit1pose1 = loadShape("kit1pose1.svg");//
146. PShape kit1pose2 = loadShape("kit1pose2.svg");//
147. PShape kit2pose1 = loadShape("kit2pose1.svg");//
148. PShape kit2pose2 = loadShape("kit2pose2.svg");//
149. PShape kit3pose1 = loadShape("kit3pose1.svg");//
150. PShape kit3pose2 = loadShape("kit3pose2.svg");//
151. PShape kit4pose1 = loadShape("kit4pose1.svg");//
152. PShape kit4pose2 = loadShape("kit4pose2.svg");//
153. PShape kit5pose1 = loadShape("kit5pose1.svg");//
154. PShape kit5pose2 = loadShape("kit5pose2.svg");//
155. PShape kit6pose1 = loadShape("kit6pose1.svg");//
156. PShape kit6pose2 = loadShape("kit6pose2.svg");//
158. //////////////////////////////////////////////////////////////////////////
161. void setup() {
162. size(800,600);
163. background(255);
164. smooth();
165. }
167. void draw(){
168. while(startPage){
169. //draw backgroundGradient from (0,0), full width, full height
170. //shape(backgroundGradient,0,0,width,height);
171. //draw hostCat
172. //draw startScreenMessage
174. if(mousePressed){
175. startPage = false;
176. chooseChars = true;
177. }
178. }//end startPage
181. }//end draw()
The comment //slashes were just my way of checking the file names off as I went through my data file. Does anyone see what my issue might be, or is it definitely just a typo I missed with the PShape names?

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