Object Attraction - История изменений

Patarakin в 07:29, 2 мая 2024

2024-05-02T07:29:20Z

← Предыдущая версия		Версия от 10:29, 2 мая 2024
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	In '''Object Attraction''' two or more objects are attracted to each other; or are pulling on each other. This can also be referred to as gravity.		In '''Object Attraction''' two or more objects are attracted to each other; or are pulling on each other. This can also be referred to as gravity.

	== Elliptical Orbit Method ==		== Scratch ==

			=== Elliptical Orbit Method ===
	One way to make one object attracted to another object is to make a sprite "Orbit" around the other object. This method is always 100% accurate and will automatically move when the object that it is being rotated about moves. Here is a script that creates an elliptical orbit:		One way to make one object attracted to another object is to make a sprite "Orbit" around the other object. This method is always 100% accurate and will automatically move when the object that it is being rotated about moves. Here is a script that creates an elliptical orbit:

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	One example of the elliptical orbit method can be found [http://scratch.mit.edu/projects/dazman/1345968 here].		One example of the elliptical orbit method can be found [http://scratch.mit.edu/projects/dazman/1345968 here].

	== Velocity Method ==		=== Velocity Method ===
	Another method is to have a sprite change its velocity automatically based on its position. This method is very inaccurate however it can be very useful if your creating a game where you have to avoid multiple sprites. The Following scripts will be placed into the item that is "following" another sprite:		Another method is to have a sprite change its velocity automatically based on its position. This method is very inaccurate however it can be very useful if your creating a game where you have to avoid multiple sprites. The Following scripts will be placed into the item that is "following" another sprite:

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	<scratch project="1346019" />		<scratch project="1346019" />

	== Trigonometric Method ==		=== Trigonometric Method ===

	* Simulating Gravity		* Simulating Gravity

	== Direct Movement Method ==		==== Direct Movement Method ====
	This method although far more basic than the previous methods, can be very useful in certain situations. This method is very accurate and will move automatically with the sprite. Here is an example script that would be place in the sprite that is "following" the other sprite:		This method although far more basic than the previous methods, can be very useful in certain situations. This method is very accurate and will move automatically with the sprite. Here is an example script that would be place in the sprite that is "following" the other sprite:

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	: http://scratch.mit.edu/projects/dazman/1346041		: http://scratch.mit.edu/projects/dazman/1346041

	== Wall Method ==		==== Wall Method ====
	This method sort of has a fast wall attraction.		This method sort of has a fast wall attraction.

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			== StarLogo Nova==


	[[Category:Scripting Tutorials]]		[[Category:Scripting Tutorials]]

Patarakin в 07:11, 13 марта 2023

2023-03-13T07:11:47Z

← Предыдущая версия		Версия от 10:11, 13 марта 2023
Строка 80:		Строка 80:
	</scratchblocks>		</scratchblocks>

	~~One example of the direct movement method can be seen [~~http://scratch.mit.edu/projects/dazman/1346041 ~~here].~~		<scratch project="1346041" />
			: http://scratch.mit.edu/projects/dazman/1346041

	== Wall Method ==		== Wall Method ==
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	</scratchblocks>		</scratchblocks>

	~~== See Also ==~~
	* [[Object Repulsion]]
	* [[Simulating Gravity]]


	[[Category:Scripting Tutorials]]		[[Category:Scripting Tutorials]]

Patarakin: /* Velocity Method */

2023-03-13T07:09:21Z

Velocity Method

← Предыдущая версия		Версия от 10:09, 13 марта 2023
Строка 60:		Строка 60:
	</scratchblocks>		</scratchblocks>

	~~One example of the velocity method can be seen [~~http://scratch.mit.edu/projects/dazman/1346019 ~~here].~~		; Пример проекта с притяжением объектов
			: http://scratch.mit.edu/projects/dazman/1346019

			<scratch project="1346019" />

	== Trigonometric Method ==		== Trigonometric Method ==

Patarakin: /* Trigonometric Method */

2023-02-16T11:35:07Z

Trigonometric Method

← Предыдущая версия		Версия от 14:35, 16 февраля 2023
Строка 64:		Строка 64:
	== Trigonometric Method ==		== Trigonometric Method ==

	~~{{main\|~~Simulating Gravity}}		* Simulating Gravity

	== Direct Movement Method ==		== Direct Movement Method ==

Patarakin в 13:51, 29 августа 2022

2022-08-29T13:51:14Z

← Предыдущая версия		Версия от 16:51, 29 августа 2022
Строка 8:		Строка 8:
	}}		}}
	In '''Object Attraction''' two or more objects are attracted to each other; or are pulling on each other. This can also be referred to as gravity.		In '''Object Attraction''' two or more objects are attracted to each other; or are pulling on each other. This can also be referred to as gravity.

	~~{{tip\|Please remember to adjust the scripts shown in this tutorial as necessary to best fit your [[project]].}}~~

	== Elliptical Orbit Method ==		== Elliptical Orbit Method ==
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	* [[Simulating Gravity]]		* [[Simulating Gravity]]

	~~[[Category:Physics Tutorials]]~~[[Category:Scripting Tutorials]]
	~~[[ja:オブジェクト間の引力~~]]		[[Category:Scripting Tutorials]]

Patarakin в 13:50, 29 августа 2022

2022-08-29T13:50:20Z

← Предыдущая версия		Версия от 16:50, 29 августа 2022
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			{{Scripting Tutorials
			\|Description=Как имитировать притяжение объектов друг к другу?
			\|Field_of_knowledge=Биология, Информатика, Физика
			\|FieldActivity=Computational Thinker
			\|Возрастная категория=8
			\|similar_concepts=Преследовать другого агента
			\|Environment=Scratch, Snap!, StarLogo Nova
			}}
	In '''Object Attraction''' two or more objects are attracted to each other; or are pulling on each other. This can also be referred to as gravity.		In '''Object Attraction''' two or more objects are attracted to each other; or are pulling on each other. This can also be referred to as gravity.

Patarakin: 1 версия импортирована

2022-07-21T08:33:15Z

1 версия импортирована

← Предыдущая версия		Версия от 11:33, 21 июля 2022
(нет различий)

scratch>The Code: /* Elliptical Orbit Method */

2019-03-13T06:00:41Z

Elliptical Orbit Method

Новая страница

In '''Object Attraction''' two or more objects are attracted to each other; or are pulling on each other. This can also be referred to as gravity.

{{tip|Please remember to adjust the scripts shown in this tutorial as necessary to best fit your [[project]].}}

== Elliptical Orbit Method ==
One way to make one object attracted to another object is to make a sprite "Orbit" around the other object. This method is always 100% accurate and will automatically move when the object that it is being rotated about moves. Here is a script that creates an elliptical orbit:

<scratchblocks>
when green flag clicked
set [semi-major-axis v] to [110] //longest radius
set [semi-minor-axis v] to [50] //shortest radius
set [t v] to [0] // current angle
set [inclination v] to [45] //inclination of the ellipse
forever
repeat (360)
set [x v] to ((([cos v] of (t)) * (semi-major-axis)) + ([x position v] of [Sprite3 v]))
set [y v] to ((([sin v] of (t)) * (semi-minor-axis)) + ([y position v] of [Sprite3 v]))
set x to (((x) * ([cos v] of (inclination))) - ((y) * ([sin v] of (inclination))))//tilt 'inclination' degrees. Trigonometric additive theorey
set y to (((x) * ([sin v] of (inclination))) + ((y) * ([cos v] of (inclination))))
change [t v] by (5)
end
end
</scratchblocks>
Remember that this script goes in the object that is being rotated.

One example of the elliptical orbit method can be found [http://scratch.mit.edu/projects/dazman/1345968 here].

== Velocity Method ==
Another method is to have a sprite change its velocity automatically based on its position. This method is very inaccurate however it can be very useful if your creating a game where you have to avoid multiple sprites. The Following scripts will be placed into the item that is "following" another sprite:

<scratchblocks>
when green flag clicked
set [y speed v] to [0]
set [x speed v] to [0]
forever
if <([x position v] of [Sprite2 v]) < (x position)> then
change [x speed v] by (-0.1)
end
if <([x position v] of [Sprite2 v]) > (x position)> then
change [x speed v] by (0.1)
end
if <([y position v] of [Sprite2 v]) < (y position)> then
change [y speed v] by (-0.1)
end
if <([y position v] of [Sprite2 v]) > (y position)> then
change [y speed v] by (0.1)
end
end

when green flag clicked
forever
go to x: ((x position) + (x speed)) y: ((y position) + (y speed))
end
</scratchblocks>

One example of the velocity method can be seen [http://scratch.mit.edu/projects/dazman/1346019 here].

== Trigonometric Method ==

{{main|Simulating Gravity}}

== Direct Movement Method ==
This method although far more basic than the previous methods, can be very useful in certain situations. This method is very accurate and will move automatically with the sprite. Here is an example script that would be place in the sprite that is "following" the other sprite:

<scratchblocks>
when green flag clicked
forever
point towards [Sprite2 v]
move (5) steps
end
</scratchblocks>

One example of the direct movement method can be seen [http://scratch.mit.edu/projects/dazman/1346041 here].

== Wall Method ==
This method sort of has a fast wall attraction.

<scratchblocks>
when green flag clicked
forever
set x to ((10)*(mouse x))
set y to ((10)+(mouse y))
end
</scratchblocks>

== See Also ==
* [[Object Repulsion]]
* [[Simulating Gravity]]

[[Category:Physics Tutorials]][[Category:Scripting Tutorials]]
[[ja:オブジェクト間の引力]]