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Android

андроид

процессинг

игры

научиться делать игры

программирование

уроки программирования

Видеообзор

интересные игры

новинки игр

прохождение игры

создание игры

unity 3d

android

game

new game

смотреть прохождение

новые игры

программирование игр

создание игр с нуля

arduino

компьютерная музыка

мобильные игры

мобильные приложения

уроки создания игр

tutorial

00:00:00

hello dear friends, I am glad to

00:00:03

welcome you to the space 3d channel and

00:00:05

today we will continue to study the

00:00:08

processing programming language, I

00:00:13

remind you that we stopped with

00:00:15

simple figures, namely the ellipse and the

00:00:19

quadrilateral, and so let's continue

00:00:22

our study and the next thing we will

00:00:24

study is this variables,

00:00:26

if we draw an analogy with the outside world, a

00:00:28

variable is like a box into which we can

00:00:32

put a certain number of

00:00:33

objects, that is, you

00:00:39

and I,

00:00:44

let’s say we have two baskets,

00:00:48

1 basket is called x, 2 baskets

00:00:52

are called y,

00:00:59

each basket we can put a

00:01:03

certain number of objects,

00:01:12

that is, in basket x we we put 4

00:01:15

objects in the basket y, we put 5

00:01:19

objects, this can be written as follows: x

00:01:23

equals 4 and y equals 5

00:01:35

in the processing language, such a

00:01:37

basket will be called

00:01:40

int because we put an integer number of

00:01:44

objects and y is also

00:01:46

int because an integer number of objects

00:01:53

now let's go back to our code and

00:02:00

write the following int

00:02:06

x equals 5

00:02:10

and int y equals 10

00:02:20

so we created two

00:02:22

variables variable x and variable y and

00:02:26

wrote the value 5 and 10 in them,

00:02:29

respectively, another type of variable

00:02:33

that we will use when

00:02:35

writing of our programs, this variable is

00:02:38

fleet, using this command we will

00:02:45

create our own variables in which

00:02:47

we will store non-integer values, for example

00:02:53

x, we have already used the variable

00:02:56

t 457,

00:03:04

so

00:03:11

that is, pay attention, and the dot

00:03:14

must be used in order to

00:03:16

separate the whole and non-integer part z equals

00:03:26

5

00:03:29

89

00:03:33

so we can store non-

00:03:37

integer values in variables, then

00:03:44

let’s do the following with you,

00:03:46

we don’t need this, we do

00:03:50

n’t need this now, now let’s write instead of x,

00:03:59

instead of 640 we’ll write,

00:04:04

or better yet, let’s

00:04:10

write 640 from x. there was y 360 and we’ll write here

00:04:16

the next

00:04:20

640

00:04:22

here and here we’ll write 360

00:04:27

so if we run

00:04:31

the program,

00:04:35

nothing will change,

00:04:37

look, nothing has changed, we

00:04:41

had an ellipse in the center and it remained

00:04:44

because we used the same

00:04:46

values then there is this entry is

00:04:48

identical so now let's write

00:04:52

the following

00:04:54

x equals x plus 1 and see what

00:05:01

happens let

00:05:02

's run as we see the ellipse began

00:05:08

to shift to the right along the x axis and this is not

00:05:12

surprising because the center of the ellipse we

00:05:17

set the commands is set by the variables x

00:05:20

and y and the variable x we increase by

00:05:24

one as we remember, our screen is

00:05:30

formed as follows

00:05:32

x we have here y we have here that is,

00:05:37

initially x we have 640

00:05:42

640 and when we launched

00:05:45

x we began to increase each cycle

00:05:48

by one 600 41 42 43 and so on

00:05:55

so we got the offset

00:06:03

now let's try, first of all,

00:06:09

let's set the background for this we

00:06:14

use the background command

00:06:24

and the color will be absolutely any color, for

00:06:29

example,

00:06:31

basically arbitrary, so let's

00:06:36

run it and see what we get, the

00:06:40

trace is now not visible, why

00:06:45

was it visible trace

00:06:46

because our screen

00:06:49

was executed every cycle 1 here is pro 13 line

00:06:54

14-15 and then again 13 14 15

00:06:58

so now we have

00:07:01

the background from the years updated every cycle, we don’t seem to

00:07:04

see it, but in fact it is behind the

00:07:09

background now let's add a displacement along the

00:07:16

y axis

00:07:23

and run

00:07:27

I think you guessed that the displacement

00:07:28

went diagonally if we now remove x

00:07:37

to the displacement it will only be down along the y axis,

00:07:41

but if we change the sign of

00:07:45

the displacement we will have the other side the

00:07:51

same and if let's change the x offset we

00:07:57

will also have in the other direction of the objects

00:08:07

[music]

00:08:09

so we have

00:08:11

[music]

00:08:12

these others run the

00:08:16

offset we now have it easy

00:08:20

okay let's now try to

00:08:25

learn a new command which will be

00:08:30

called rand for us to generate

00:08:33

random numbers

00:08:41

indicated in parentheses a range of values

00:08:45

that will be selected

00:08:47

randomly, so if we now

00:08:51

write it down more precisely, let’s create several

00:08:56

variables,

00:08:58

well, for example, you already have one variable,

00:09:02

z, and let’s add another variable, p,

00:09:14

variable p,

00:09:21

and let’s now try as

00:09:25

follows: first, x, we have the maximum

00:09:31

value on the screen if we now

00:09:34

run our program, let’s analyze

00:09:38

x for us, the maximum value is

00:09:42

1280 y 720, which means for X

00:09:52

1280

00:09:57

and for Y 720, now

00:10:13

if we run our

00:10:17

program now, well, of course, for the

00:10:26

random command we need a fleet variable

00:10:33

[music]

00:10:43

[music]

00:10:46

x let’s initially start

00:10:51

without some values

00:10:56

and let’s run

00:10:59

you see we have ellipses appearing

00:11:04

and they appear everywhere throughout the entire

00:11:08

screen area okay now let’s remove the background and

00:11:11

then remove our

00:11:16

ellipses

00:11:23

and our ellipse and paint the color that

00:11:32

will be formed by three

00:11:34

variables to z and ptz i.p.

00:11:45

let's

00:11:48

paint x like this, we don't need it

00:11:57

here anymore, we'll remove the space

00:12:02

and run our program, look, we have

00:12:08

black ellipses,

00:12:14

but black is somehow very sad,

00:12:17

let's diversify our colors using the random

00:12:21

command, that

00:12:22

is, you can copy here

00:12:30

you can copy in this way

00:12:32

and so commands

00:12:35

t variables t.z.

00:12:42

i.p.

00:12:47

values from 0 to 255 as we remember,

00:12:52

the color is formed in exactly this

00:12:57

way now let's run

00:13:09

install and run

00:13:12

[music]

00:13:18

now let's run our program and

00:13:19

see what we got here

00:13:24

we now have ellipses appearing

00:13:30

all over the screen area and how we see them

00:13:33

multi-colored thus in this lesson

00:13:41

we got acquainted with two types of

00:13:43

variables int and float and learned how to

00:13:47

use the

00:13:49

rand command with this I am finishing this lesson

00:13:53

thank you for your attention and see you in the

00:13:55

next lessons

00:13:57

[music]

Description:

В этом уроке мы познакомимся с переменными, научимся перемещать объекты на экране, а также научимся пользоваться командой random для генерирования случайных чисел.

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