Difference between revisions of "B2.createWheelJointDef"
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__NOTOC__ | __NOTOC__ | ||
<languages /> | <languages /> | ||
| − | ''' | + | '''Available since:''' Gideros 2011.6<br/> |
| − | ''' | + | '''Class:''' [[Special:MyLanguage/b2|b2]]<br/> |
| − | === | + | |
| − | + | === Description === | |
| − | Creates and returns a wheel joint definition table. | + | Creates and returns a wheel joint definition table. |
| − | (Please refer to [[b2.World:createJoint]] function for more information about all the information needed to create a wheel joint). | + | |
| − | + | (Please refer to [[b2.World:createJoint]] function for more information about all the information needed to create a wheel joint). | |
| − | < | + | <syntaxhighlight lang="lua"> |
(table) = b2.createWheelJointDef(bodyA,bodyB,anchorx,anchory,axisx,axisy) | (table) = b2.createWheelJointDef(bodyA,bodyB,anchorx,anchory,axisx,axisy) | ||
| − | </ | + | </syntaxhighlight> |
| − | === | + | |
| − | '''bodyA''': (b2.Body) | + | === Parameters === |
| − | '''bodyB''': (b2.Body) | + | '''bodyA''': (b2.Body) the first attached body <br/> |
| − | '''anchorx''': (number) | + | '''bodyB''': (b2.Body) the second attached body <br/> |
| − | '''anchory''': (number) | + | '''anchorx''': (number) the x coordinate of the world anchor point <br/> |
| − | '''axisx''': (number) | + | '''anchory''': (number) the y coordinate of the world anchor point <br/> |
| − | '''axisy''': (number) | + | '''axisx''': (number) the x coordinate of the world translation axis in bodyA <br/> |
| − | === | + | '''axisy''': (number) the y coordinate of the world translation axis in bodyA <br/> |
| − | ''' | + | |
| − | === | + | === Return values === |
| − | '''Wheel joint''' | + | '''Returns''' (table) a new wheel joint definition table<br/> |
| − | < | + | |
| + | === Examples === | ||
| + | '''Wheel joint''' | ||
| + | <syntaxhighlight lang="lua"> | ||
| + | --create empty box2d body for joint | ||
local ground = world:createBody({}) | local ground = world:createBody({}) | ||
ground:setPosition(350, 480) | ground:setPosition(350, 480) | ||
| − | --axisx, | + | --axisx, axisy values usually between 0 and 1 |
| − | --0 | + | --0 0 moves freely |
| − | --0 | + | --0 1 force pulling back on y axis |
| − | --1 | + | --1 0 force pulling back on x axis |
| − | --1 | + | --1 1 force pulling back all diretions |
local jointDef = b2.createWheelJointDef(body, ground, 350, 200, 1, 1) | local jointDef = b2.createWheelJointDef(body, ground, 350, 200, 1, 1) | ||
| − | local wheelJoint = world:createJoint(jointDef)</ | + | local wheelJoint = world:createJoint(jointDef) |
| + | </syntaxhighlight> | ||
| + | |||
| + | {{B2}} | ||
Latest revision as of 14:27, 13 July 2023
Available since: Gideros 2011.6
Class: b2
Description
Creates and returns a wheel joint definition table.
(Please refer to b2.World:createJoint function for more information about all the information needed to create a wheel joint).
(table) = b2.createWheelJointDef(bodyA,bodyB,anchorx,anchory,axisx,axisy)
Parameters
bodyA: (b2.Body) the first attached body
bodyB: (b2.Body) the second attached body
anchorx: (number) the x coordinate of the world anchor point
anchory: (number) the y coordinate of the world anchor point
axisx: (number) the x coordinate of the world translation axis in bodyA
axisy: (number) the y coordinate of the world translation axis in bodyA
Return values
Returns (table) a new wheel joint definition table
Examples
Wheel joint
--create empty box2d body for joint
local ground = world:createBody({})
ground:setPosition(350, 480)
--axisx, axisy values usually between 0 and 1
--0 0 moves freely
--0 1 force pulling back on y axis
--1 0 force pulling back on x axis
--1 1 force pulling back all diretions
local jointDef = b2.createWheelJointDef(body, ground, 350, 200, 1, 1)
local wheelJoint = world:createJoint(jointDef)
