Difference between revisions of "B2.Contact"
From GiderosMobile
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| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
=== <translate>Methods</translate> === | === <translate>Methods</translate> === | ||
| − | [[Special:MyLanguage/b2.Contact:getChildIndexA|b2.Contact:getChildIndexA]] <br/><!-- GIDEROSMTD:b2.Contact:getChildIndexA --> | + | [[Special:MyLanguage/b2.Contact:getChildIndexA|b2.Contact:getChildIndexA]] <br/><!-- GIDEROSMTD:b2.Contact:getChildIndexA() --> |
| − | [[Special:MyLanguage/b2.Contact:getChildIndexB|b2.Contact:getChildIndexB]] <br/><!-- GIDEROSMTD:b2.Contact:getChildIndexB --> | + | [[Special:MyLanguage/b2.Contact:getChildIndexB|b2.Contact:getChildIndexB]] <br/><!-- GIDEROSMTD:b2.Contact:getChildIndexB() --> |
| − | [[Special:MyLanguage/b2.Contact:getFixtureA|b2.Contact:getFixtureA]] <br/><!-- GIDEROSMTD:b2.Contact:getFixtureA --> | + | [[Special:MyLanguage/b2.Contact:getFixtureA|b2.Contact:getFixtureA]] <br/><!-- GIDEROSMTD:b2.Contact:getFixtureA() --> |
| − | [[Special:MyLanguage/b2.Contact:getFixtureB|b2.Contact:getFixtureB]] <br/><!-- GIDEROSMTD:b2.Contact:getFixtureB --> | + | [[Special:MyLanguage/b2.Contact:getFixtureB|b2.Contact:getFixtureB]] <br/><!-- GIDEROSMTD:b2.Contact:getFixtureB() --> |
| − | [[Special:MyLanguage/b2.Contact:getFriction|b2.Contact:getFriction]] <br/><!-- GIDEROSMTD:b2.Contact:getFriction --> | + | [[Special:MyLanguage/b2.Contact:getFriction|b2.Contact:getFriction]] <br/><!-- GIDEROSMTD:b2.Contact:getFriction() --> |
| − | [[Special:MyLanguage/b2.Contact:getManifold|b2.Contact:getManifold]] <br/><!-- GIDEROSMTD:b2.Contact:getManifold --> | + | [[Special:MyLanguage/b2.Contact:getManifold|b2.Contact:getManifold]] <br/><!-- GIDEROSMTD:b2.Contact:getManifold() --> |
| − | [[Special:MyLanguage/b2.Contact:getRestitution|b2.Contact:getRestitution]] <br/><!-- GIDEROSMTD:b2.Contact:getRestitution --> | + | [[Special:MyLanguage/b2.Contact:getRestitution|b2.Contact:getRestitution]] <br/><!-- GIDEROSMTD:b2.Contact:getRestitution() --> |
| − | [[Special:MyLanguage/b2.Contact:getWorldManifold|b2.Contact:getWorldManifold]] <br/><!-- GIDEROSMTD:b2.Contact:getWorldManifold --> | + | [[Special:MyLanguage/b2.Contact:getWorldManifold|b2.Contact:getWorldManifold]] <br/><!-- GIDEROSMTD:b2.Contact:getWorldManifold() --> |
| − | [[Special:MyLanguage/b2.Contact:isTouching|b2.Contact:isTouching]] <br/><!-- GIDEROSMTD:b2.Contact:isTouching --> | + | [[Special:MyLanguage/b2.Contact:isTouching|b2.Contact:isTouching]] <br/><!-- GIDEROSMTD:b2.Contact:isTouching() --> |
| − | [[Special:MyLanguage/b2.Contact:resetFriction|b2.Contact:resetFriction]] <br/><!-- GIDEROSMTD:b2.Contact:resetFriction --> | + | [[Special:MyLanguage/b2.Contact:resetFriction|b2.Contact:resetFriction]] <br/><!-- GIDEROSMTD:b2.Contact:resetFriction() --> |
| − | [[Special:MyLanguage/b2.Contact:resetRestitution|b2.Contact:resetRestitution]] <br/><!-- GIDEROSMTD:b2.Contact:resetRestitution --> | + | [[Special:MyLanguage/b2.Contact:resetRestitution|b2.Contact:resetRestitution]] <br/><!-- GIDEROSMTD:b2.Contact:resetRestitution() --> |
| − | [[Special:MyLanguage/b2.Contact:setEnabled|b2.Contact:setEnabled]] <br/><!-- GIDEROSMTD:b2.Contact:setEnabled --> | + | [[Special:MyLanguage/b2.Contact:setEnabled|b2.Contact:setEnabled]] <br/><!-- GIDEROSMTD:b2.Contact:setEnabled(flag) --> |
| − | [[Special:MyLanguage/b2.Contact:setFriction|b2.Contact:setFriction]] <br/><!-- GIDEROSMTD:b2.Contact:setFriction --> | + | [[Special:MyLanguage/b2.Contact:setFriction|b2.Contact:setFriction]] <br/><!-- GIDEROSMTD:b2.Contact:setFriction(friction) --> |
| − | [[Special:MyLanguage/b2.Contact:setRestitution|b2.Contact:setRestitution]] <br/><!-- GIDEROSMTD:b2.Contact:setRestitution --> | + | [[Special:MyLanguage/b2.Contact:setRestitution|b2.Contact:setRestitution]] <br/><!-- GIDEROSMTD:b2.Contact:setRestitution(restitution) --> |
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
=== <translate>Events</translate> === | === <translate>Events</translate> === | ||
=== <translate>Constants</translate> === | === <translate>Constants</translate> === | ||
|} | |} | ||
Revision as of 15:33, 13 September 2018
Supported platforms: 
Available since: Gideros 2012.09.6
Description
The class manages contact between two shapes. A contact exists for each overlapping AABB in the broad-phase (except if filtered). Therefore a contact object may exist that has no contact points.
Examples
Checking collisions from bottom using b2.Contact
local isTouchingGround = false
world:addEventListener(Event.BEGIN_CONTACT, function(e)
local manifold = e.contact:getWorldManifold()
if manifold.normal.y > 0.9 then
--collision came from bottom
isTouchingGround = true
end
end)
world:addEventListener(Event.END_CONTACT, function(e)
local manifold = e.contact:getWorldManifold()
if manifold.normal.y < 0.1 then
--collision ended from bottom
isTouchingGround = false
end
end)
