Difference between revisions of "B2.createRevoluteJointDef"
From GiderosMobile
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__NOTOC__ | __NOTOC__ | ||
| + | <languages /> | ||
'''Available since:''' Gideros 2011.6<br/> | '''Available since:''' Gideros 2011.6<br/> | ||
| + | '''Class:''' [[Special:MyLanguage/b2|b2]]<br/> | ||
| + | |||
=== Description === | === Description === | ||
| − | + | Creates and returns a revolute joint definition table with the bodies, local anchors, and reference angle using a world anchor point. | |
| − | Creates and returns a revolute joint definition table with the bodies, local anchors, and reference angle using a world anchor point. | + | |
| − | (Please refer to [[b2.World:createJoint]] function for more information about all the information needed to create a revolute joint). | + | (Please refer to [[b2.World:createJoint]] function for more information about all the information needed to create a revolute joint). |
| − | + | <syntaxhighlight lang="lua"> | |
| − | < | ||
(table) = b2.createRevoluteJointDef(bodyA,bodyB,anchorx,anchory) | (table) = b2.createRevoluteJointDef(bodyA,bodyB,anchorx,anchory) | ||
| − | </ | + | </syntaxhighlight> |
| + | |||
=== Parameters === | === Parameters === | ||
'''bodyA''': (b2.Body) the first attached body <br/> | '''bodyA''': (b2.Body) the first attached body <br/> | ||
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'''anchorx''': (number) the x coordinate of the world anchor point <br/> | '''anchorx''': (number) the x coordinate of the world anchor point <br/> | ||
'''anchory''': (number) the y coordinate of the world anchor point <br/> | '''anchory''': (number) the y coordinate of the world anchor point <br/> | ||
| + | |||
=== Return values === | === Return values === | ||
| − | '''Returns''' (table) | + | '''Returns''' (table) a new revolute joint definition table<br/> |
| + | |||
=== Examples === | === Examples === | ||
| − | + | '''Revolute joint''' | |
| − | + | <syntaxhighlight lang="lua"> | |
| − | + | --create empty box2d body for joint | |
| − | '''Revolute joint''' | ||
| − | < | ||
local ground = world:createBody({}) | local ground = world:createBody({}) | ||
ground:setPosition(300, 480) | ground:setPosition(300, 480) | ||
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local jointDef = b2.createRevoluteJointDef(body, ground, 300, 300) | local jointDef = b2.createRevoluteJointDef(body, ground, 300, 300) | ||
local revoluteJoint = world:createJoint(jointDef) | local revoluteJoint = world:createJoint(jointDef) | ||
| − | --will not let ball spin | + | --will not let ball spin forever |
revoluteJoint:setMaxMotorTorque(1) | revoluteJoint:setMaxMotorTorque(1) | ||
| − | revoluteJoint:enableMotor(true)</ | + | revoluteJoint:enableMotor(true) |
| + | </syntaxhighlight> | ||
| + | |||
| + | {{B2}} | ||
Latest revision as of 14:27, 13 July 2023
Available since: Gideros 2011.6
Class: b2
Description
Creates and returns a revolute joint definition table with the bodies, local anchors, and reference angle using a world anchor point.
(Please refer to b2.World:createJoint function for more information about all the information needed to create a revolute joint).
(table) = b2.createRevoluteJointDef(bodyA,bodyB,anchorx,anchory)
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
Return values
Returns (table) a new revolute joint definition table
Examples
Revolute joint
--create empty box2d body for joint
local ground = world:createBody({})
ground:setPosition(300, 480)
local jointDef = b2.createRevoluteJointDef(body, ground, 300, 300)
local revoluteJoint = world:createJoint(jointDef)
--will not let ball spin forever
revoluteJoint:setMaxMotorTorque(1)
revoluteJoint:enableMotor(true)
