1 00:00:01,700 --> 00:00:06,830 OK, so in this video, we want to start to work on moving the slider around and then changing the position 2 00:00:06,830 --> 00:00:08,240 of the song based on that. 3 00:00:08,250 --> 00:00:14,960 So in our play time function, we can see actually I'm seeing right here where we set the slider to 4 00:00:14,960 --> 00:00:15,380 length. 5 00:00:16,580 --> 00:00:22,100 We're configuring this, we can actually just get rid of this and just paste this in or else statement 6 00:00:22,100 --> 00:00:28,400 where we're putting next time as the value, we can also we can also set the to value. 7 00:00:28,770 --> 00:00:31,130 So let's just do both of them in this function. 8 00:00:31,130 --> 00:00:31,410 Right. 9 00:00:32,340 --> 00:00:37,630 That that works and two length of song, right? 10 00:00:38,040 --> 00:00:41,430 So that means up here, we don't really need these guys. 11 00:00:41,710 --> 00:00:44,430 So, OK, not really what we want to talk about in this video. 12 00:00:44,430 --> 00:00:50,850 Just a little thing I noticed to clean up our code a little bit, but now we want to drag our slider 13 00:00:50,850 --> 00:00:55,910 around and play the song based on where the slider is at the moment. 14 00:00:55,920 --> 00:01:01,620 So let's head all the way down here to the bottom of our code, or at least the bottom of our function 15 00:01:01,620 --> 00:01:03,760 section to our slide function. 16 00:01:03,780 --> 00:01:06,420 We created several videos ago and we first set up our slider. 17 00:01:06,670 --> 00:01:08,460 Right now we just have it set to pass. 18 00:01:08,610 --> 00:01:14,490 Well, what we want to do here, when we when we move the slider, we want to play the song from whatever 19 00:01:14,490 --> 00:01:16,500 current position the slider is at. 20 00:01:16,740 --> 00:01:18,010 So how do we play a song? 21 00:01:18,030 --> 00:01:21,420 Well, let's head up to our play function and. 22 00:01:22,900 --> 00:01:23,770 Here we go. 23 00:01:24,040 --> 00:01:30,130 We know we can play songs with these four lines of code, we grab the name of the song, slap our directory 24 00:01:30,130 --> 00:01:33,090 stuff on to it, loaded into the mixer and then play it. 25 00:01:33,430 --> 00:01:34,960 So let's just copy these guys. 26 00:01:39,930 --> 00:01:45,250 So let's come down to our play or to our slide function and let's paste these, and now there is really 27 00:01:45,250 --> 00:01:47,200 just one little difference, right? 28 00:01:47,290 --> 00:01:50,380 When we play the song, we don't want to just play it. 29 00:01:50,390 --> 00:01:56,690 We want to play it from a specific position so we can set a start equal whatever we want. 30 00:01:56,730 --> 00:02:05,200 So so let's just set that equal to our song Slider so we can go song underscore slider doget. 31 00:02:05,440 --> 00:02:07,470 And these this is a function. 32 00:02:07,480 --> 00:02:09,010 So don't forget your little brackets there. 33 00:02:09,190 --> 00:02:13,000 So this will just grab whatever current position our slider is at. 34 00:02:13,000 --> 00:02:13,330 Right. 35 00:02:13,690 --> 00:02:15,520 And then play the song from that. 36 00:02:15,550 --> 00:02:19,530 Now this is going to cause us a little bit of trouble and I'll show you what that is in just a second. 37 00:02:19,540 --> 00:02:23,400 But for now, let's go ahead and save this and run it and see if that works. 38 00:02:23,890 --> 00:02:24,820 Run this guy. 39 00:02:25,980 --> 00:02:28,230 Let's add some songs you. 40 00:02:30,000 --> 00:02:30,810 Let's play one. 41 00:02:33,120 --> 00:02:34,560 Turn the volume down a bit. 42 00:02:34,830 --> 00:02:38,130 Now, if I move this forward, you can see 43 00:02:43,140 --> 00:02:43,730 it's working. 44 00:02:46,220 --> 00:02:48,410 But here's the problem I mentioned look down here. 45 00:02:48,440 --> 00:02:53,480 The last time I talked about this a couple of videos ago, if we move this around, it resets this every 46 00:02:53,480 --> 00:02:53,930 time. 47 00:02:54,620 --> 00:02:57,920 So why is it doing that? 48 00:02:58,310 --> 00:03:01,940 Well, think about what we're doing here when we move this slider. 49 00:03:06,170 --> 00:03:08,210 Let's pull up our code here. 50 00:03:08,810 --> 00:03:12,860 When we move the slider, we're playing a new instance of the song. 51 00:03:12,860 --> 00:03:15,710 We're not fast forwarding or rewinding in the song. 52 00:03:15,890 --> 00:03:19,620 Pygame doesn't do that because pygame doesn't know how long the song is. 53 00:03:19,640 --> 00:03:23,360 Remember, we had to import that mutagen thing in order to get the song going. 54 00:03:23,360 --> 00:03:27,980 So Pygame doesn't know how long the song is, therefore it doesn't know where you are in the song. 55 00:03:28,310 --> 00:03:30,920 I mean, it could tell you the current time, but. 56 00:03:32,230 --> 00:03:35,170 Based on the entire length of the song, no, not so much. 57 00:03:35,200 --> 00:03:40,870 So what we're doing here, when we replay this song, we're starting over again from zero in the current 58 00:03:40,870 --> 00:03:42,760 time or within the elapsed time. 59 00:03:42,760 --> 00:03:43,040 Right. 60 00:03:43,270 --> 00:03:45,070 So this is a bit of a problem. 61 00:03:45,070 --> 00:03:48,670 And we can fix this because we know where we are in the song. 62 00:03:49,030 --> 00:03:49,780 How do we know? 63 00:03:49,930 --> 00:03:52,750 Because the slider is wherever we we drug it. 64 00:03:53,020 --> 00:03:58,840 And since the slider is the length of the song, wherever the slider is, we know where it is in relationship 65 00:03:58,840 --> 00:03:59,940 to the length of the song. 66 00:04:00,310 --> 00:04:04,450 So we could just output into the status bar our current position of our slider. 67 00:04:04,840 --> 00:04:05,170 Right. 68 00:04:05,170 --> 00:04:07,330 And that will be the the elapsed time. 69 00:04:07,330 --> 00:04:07,640 Right. 70 00:04:07,660 --> 00:04:10,200 So that's one way we can fix that and that's what we're going to do. 71 00:04:10,210 --> 00:04:11,450 So I'll see. 72 00:04:11,530 --> 00:04:13,040 This video is getting a little bit long. 73 00:04:13,060 --> 00:04:16,000 Let's go ahead and stop this one and we'll pick this up in the next video.