Difference between revisions of "B2.PulleyJoint"
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=== <translate>Examples</translate> === | === <translate>Examples</translate> === | ||
'''Pulley joint''' | '''Pulley joint''' | ||
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--create empty box2d body for joint | --create empty box2d body for joint | ||
local ground = world:createBody({}) | local ground = world:createBody({}) | ||
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1) -- ratio (if < 1 -> makes body 2 heavier, > 1 makes body 1 heavier, =1 makes them equal | 1) -- ratio (if < 1 -> makes body 2 heavier, > 1 makes body 1 heavier, =1 makes them equal | ||
local pulleyJoint = world:createJoint(jointDef) | local pulleyJoint = world:createJoint(jointDef) | ||
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---- | ---- | ||
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*'''[[LiquidFun]]''' | *'''[[LiquidFun]]''' | ||
Latest revision as of 16:55, 12 July 2023
Supported platforms: 
Available since: Gideros 2011.6
Inherits from: b2.Joint
Description
The pulley joint is connected to two bodies and two fixed ground points. The pulley supports a ratio such that: length1 ratio * length2 <= constant Yes, the force transmitted is scaled by the ratio. The pulley also enforces a maximum length limit on both sides. This is useful to prevent one side of the pulley hitting the top.
Examples
Pulley joint
--create empty box2d body for joint
local ground = world:createBody({})
local jointDef = b2.createPulleyJointDef(body1, body2,
200, 100, --coordinates where "imaginary string" is attached in the air for body 1
350, 100, --coordinates where "imaginary string" is attached in the air for body 2
200, 300, --coordinates where "imaginary string" is attached to the body 1
350, 300, --coordinates where "imaginary string" is attached in the body 2
1) -- ratio (if < 1 -> makes body 2 heavier, > 1 makes body 1 heavier, =1 makes them equal
local pulleyJoint = world:createJoint(jointDef)
Methodsb2.PulleyJoint:getGroundAnchorA returns the x and y coordinates of the first ground anchor |
EventsConstants |
