1
00:00:16,017 --> 00:00:16,600
PROFESSOR: OK.

2
00:00:16,600 --> 00:00:19,650
So at this point, we have
our roller ball demo.

3
00:00:19,650 --> 00:00:22,470
Now, we would like to
interface with the Kinect.

4
00:00:22,470 --> 00:00:26,250
To do this, we're going to
use the simple Kinect Unity

5
00:00:26,250 --> 00:00:26,976
package.

6
00:00:26,976 --> 00:00:28,630
It's over here.

7
00:00:28,630 --> 00:00:31,560
So in the simple Kinect
package there is a prefab.

8
00:00:31,560 --> 00:00:34,740
You can drag this
prefab into your game

9
00:00:34,740 --> 00:00:38,440
and it will initiate the Kinect
and do all the stuff that's

10
00:00:38,440 --> 00:00:39,190
required for that.

11
00:00:42,390 --> 00:00:48,660
So now, when I start my game,
the Kinect will turn on.

12
00:00:48,660 --> 00:00:51,550
And it's not going
to do anything yet

13
00:00:51,550 --> 00:00:55,560
because I haven't interfaced it.

14
00:00:55,560 --> 00:00:59,730
So, now I want my ball
that we created previously

15
00:00:59,730 --> 00:01:01,890
to follow my right hand sign.

16
00:01:01,890 --> 00:01:08,550
So what we're going to
do is go into our player

17
00:01:08,550 --> 00:01:10,170
and we're going to add a script.

18
00:01:10,170 --> 00:01:13,860
The script that we're going
to add is the follow join.

19
00:01:13,860 --> 00:01:22,490
You can find it in
scripts, no, Kinect stuff.

20
00:01:22,490 --> 00:01:24,720
There it is and follow join.

21
00:01:24,720 --> 00:01:30,350
So let's drag it
on to our player,

22
00:01:30,350 --> 00:01:32,410
and then we need
to fill out which

23
00:01:32,410 --> 00:01:33,660
object we would like to track.

24
00:01:37,610 --> 00:01:40,300
So in this case I'd like
to follow my right hand.

25
00:01:40,300 --> 00:01:45,535
And you can find that I have
a right hand object here.

26
00:01:45,535 --> 00:01:52,310
So you can drag this right
hand object into the player

27
00:01:52,310 --> 00:01:53,060
controller script.

28
00:01:56,330 --> 00:01:59,570
So that's the tracked object.

29
00:01:59,570 --> 00:02:01,830
And now the ball should
follow my right hand.

30
00:02:09,750 --> 00:02:11,610
So you can see it
there in the scene.

31
00:02:11,610 --> 00:02:14,140
As I move my hand
closer to the Kinect,

32
00:02:14,140 --> 00:02:16,150
it moves closer to the camera.

33
00:02:16,150 --> 00:02:18,520
In many gamines, this isn't
what You'd want though.

34
00:02:18,520 --> 00:02:20,650
So inside that
follow join script

35
00:02:20,650 --> 00:02:23,470
there is an to
invert each access.

36
00:02:23,470 --> 00:02:26,540
Since the z-axis is one
goes toward the camera,

37
00:02:26,540 --> 00:02:30,460
in this case, we're going
to invert the z-axis.

38
00:02:30,460 --> 00:02:36,790
So now, when we click play,
as I move my hand forward,

39
00:02:36,790 --> 00:02:39,440
the ball moves forward
within the world space,

40
00:02:39,440 --> 00:02:47,320
and back, left,
right, up, down, etc.

41
00:02:47,320 --> 00:02:50,480
So now, with my right hand,
I can control the ball.

42
00:02:53,710 --> 00:02:57,002
All of the pick-ups should
still work as they did before

43
00:02:57,002 --> 00:02:59,730
and the game can still be won.

44
00:02:59,730 --> 00:03:03,795
So I'm getting all the
pick-ups with my right hand.

45
00:03:03,795 --> 00:03:08,070
Have to go back it up a little.

46
00:03:08,070 --> 00:03:10,890
It's just like using a mouse
or arrow keys, but in 3D.

47
00:03:14,710 --> 00:03:16,387
So as you can see,
that still works.

48
00:03:16,387 --> 00:03:18,847
Your turn.

49
00:03:18,847 --> 00:03:20,680
So now, let's say we
want to track something

50
00:03:20,680 --> 00:03:23,491
other than our right hand.

51
00:03:23,491 --> 00:03:27,340
You can adjust this in
the moving object parent.

52
00:03:27,340 --> 00:03:30,280
So I have a detect joint
script attached to here

53
00:03:30,280 --> 00:03:32,830
and this has a
track joint option.

54
00:03:32,830 --> 00:03:38,440
You can change this to
be any joint you like.

55
00:03:38,440 --> 00:03:44,050
So let's say I want
to do my left and.

56
00:03:44,050 --> 00:03:50,958
I'll select the hand left
object, which is somewhere.

57
00:03:50,958 --> 00:03:51,954
There it is.

58
00:03:55,950 --> 00:03:59,430
And then, for the sake of
making things make sense,

59
00:03:59,430 --> 00:04:02,290
rename my object to
left hand object.

60
00:04:07,290 --> 00:04:09,820
So now that this is
called left hand object,

61
00:04:09,820 --> 00:04:13,060
we want to make sure that the
object attached to the player

62
00:04:13,060 --> 00:04:16,350
controller, follow join, is
indeed the left hand object

63
00:04:16,350 --> 00:04:20,360
as is visible right here.

64
00:04:20,360 --> 00:04:25,900
So now when I click play, it
should follow my left hand

65
00:04:25,900 --> 00:04:26,908
not my right hand.

66
00:04:29,836 --> 00:04:31,788
If the Kinect can find me.

67
00:04:31,788 --> 00:04:34,730
There it is.

68
00:04:34,730 --> 00:04:36,760
And so I can move my
left hand forward,

69
00:04:36,760 --> 00:04:39,744
left, right, up, down, etc.

70
00:04:39,744 --> 00:04:41,744
So now, let's say we want
to try multiple joints

71
00:04:41,744 --> 00:04:44,280
at the same time.

72
00:04:44,280 --> 00:04:47,510
This whole moving objects
parent part can be duplicated.

73
00:04:47,510 --> 00:04:51,780
So Control D or
Command D to duplicate.

74
00:04:51,780 --> 00:04:56,740
And we can now create a left had
object and a right hand object.

75
00:04:56,740 --> 00:05:05,253
So let's go back to being
hand-right and rename this.

76
00:05:11,670 --> 00:05:14,820
So I'm going to add
another sphere to my scene

77
00:05:14,820 --> 00:05:18,560
in order to have another
object for my game.

78
00:05:18,560 --> 00:05:22,100
So let's create a sphere.

79
00:05:22,100 --> 00:05:24,980
And then I'm going it so that
my right hand follows this one

80
00:05:24,980 --> 00:05:27,536
since my left hand already
follows the player.

81
00:05:30,434 --> 00:05:32,840
So in Kinect stuff, follow join.

82
00:05:32,840 --> 00:05:34,830
Drag it right on to that sphere.

83
00:05:37,480 --> 00:05:39,190
OK.

84
00:05:39,190 --> 00:05:41,910
So now, I want this to
follow my right hand object,

85
00:05:41,910 --> 00:05:44,230
so I'm going to drag that
in as my track joint.

86
00:05:47,014 --> 00:05:49,561
And now that sphere should
follow my right hand,

87
00:05:49,561 --> 00:05:50,894
while the other follows my left.

88
00:06:01,280 --> 00:06:03,465
So I didn't set the
invert option on that one

89
00:06:03,465 --> 00:06:05,270
though, so as I
move forward, they

90
00:06:05,270 --> 00:06:08,920
each go in opposite directions.

91
00:06:08,920 --> 00:06:11,830
But otherwise, left and
right work as you'd expect,

92
00:06:11,830 --> 00:06:13,190
and up and down.

93
00:06:13,190 --> 00:06:15,370
So let's say I want to
try a different joint.

94
00:06:18,751 --> 00:06:23,905
Like, let's make my left
hand object be my head.

95
00:06:23,905 --> 00:06:26,984
We'll go to that
moving object parent ,

96
00:06:26,984 --> 00:06:29,150
change it to head here.

97
00:06:29,150 --> 00:06:31,346
And let's rename this to head.

98
00:06:46,010 --> 00:06:49,053
Now, my right hand
controls the sphere

99
00:06:49,053 --> 00:06:52,810
that we just added and my
head controls the player.

100
00:06:52,810 --> 00:06:55,080
So, where is my right hand?

101
00:06:55,080 --> 00:06:56,980
There is my right hand.

102
00:06:56,980 --> 00:06:57,990
Where is my head?

103
00:06:57,990 --> 00:06:58,944
Can we see it?

104
00:06:58,944 --> 00:06:59,610
Can I get it in?

105
00:07:05,022 --> 00:07:08,470
It's down here.

106
00:07:08,470 --> 00:07:10,640
You can see it up on scene view.

107
00:07:10,640 --> 00:07:12,900
I'm struggling to get bearings.

108
00:07:16,716 --> 00:07:18,930
Oh, I never set invert axis.

109
00:07:18,930 --> 00:07:20,190
That would explain that.

110
00:07:23,557 --> 00:07:26,924
Probably going to--

111
00:07:32,700 --> 00:07:36,768
It was on player, right?

112
00:07:36,768 --> 00:07:37,754
No, it was not.

113
00:07:37,754 --> 00:07:38,740
It was on the sphere.

114
00:07:57,480 --> 00:08:01,120
Hope I can re-enter
myself in world space.

115
00:08:01,120 --> 00:08:02,600
There it is.

116
00:08:02,600 --> 00:08:07,510
So, as I move my head left
and right, up and down,

117
00:08:07,510 --> 00:08:10,320
and my hand, they
all go properly.

118
00:08:10,320 --> 00:08:13,290
Each object's position can be
addressed by other objects.

119
00:08:13,290 --> 00:08:17,790
And so this is how you can
gather your data to use however

120
00:08:17,790 --> 00:08:19,460
you like.