1
00:00:00,000 --> 00:00:00,390

2
00:00:00,390 --> 00:00:02,900
>> DAVID MALAN: So what about a cat who
doesn't like you petting him?

3
00:00:02,900 --> 00:00:04,780
Let's implement that.

4
00:00:04,780 --> 00:00:09,680
When green flag clicked, let's
forever do the following.

5
00:00:09,680 --> 00:00:13,060
If the cat is touching the mouse
pointer, then we'll do one thing.

6
00:00:13,060 --> 00:00:14,770
Else, we'll do something else.

7
00:00:14,770 --> 00:00:18,710
So we need a two-branch condition.

8
00:00:18,710 --> 00:00:22,300
>> And for our Boolean expression, we
want to sense whether Scratch is

9
00:00:22,300 --> 00:00:23,890
touching the mouse pointer.

10
00:00:23,890 --> 00:00:28,440
And if so, this time we're going to have
him play a sound of not Meow, the

11
00:00:28,440 --> 00:00:31,920
default but rather Lion, the roar.

12
00:00:31,920 --> 00:00:35,470
Else, we'll go ahead and have Scratch
meow in the usual way.

13
00:00:35,470 --> 00:00:38,670
>> And thereafter, we'll give him a moment
to catch his breath by waiting

14
00:00:38,670 --> 00:00:43,010
two seconds outside of that branch, no
matter what sound he happens to make.

15
00:00:43,010 --> 00:00:44,630
Now we click that green flag.

16
00:00:44,630 --> 00:00:46,040
>> [MEOWING]

17
00:00:46,040 --> 00:00:47,390
>> There's that happy cat.

18
00:00:47,390 --> 00:00:53,270
But what if I try petting this cat as
by moving my mouse pointer over him?

19
00:00:53,270 --> 00:00:53,990
>> [ROAR]

20
00:00:53,990 --> 00:00:55,240
>> Don't pet that cat.

21
00:00:55,240 --> 00:00:56,377