Difference between revisions of "B2.WorldManifold"
From GiderosMobile
| Line 2: | Line 2: | ||
'''Supported platforms:''' <br/> | '''Supported platforms:''' <br/> | ||
'''Available since:''' Gideros 2012.09.6<br/> | '''Available since:''' Gideros 2012.09.6<br/> | ||
| − | === Description === | + | === <translate>Description</translate> === |
<translate>Contains information about contact relative to the world</translate> | <translate>Contains information about contact relative to the world</translate> | ||
| − | === Examples === | + | === <translate>Examples</translate> === |
'''Checking collisions from bottom using b2.Contact'''<br/> | '''Checking collisions from bottom using b2.Contact'''<br/> | ||
<source lang="lua">local isTouchingGround = false | <source lang="lua">local isTouchingGround = false | ||
| Line 38: | Line 38: | ||
{|- | {|- | ||
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
| − | === Methods === | + | === <translate>Methods</translate> === |
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
| − | === Events === | + | === <translate>Events</translate> === |
| − | === Constants === | + | === <translate>Constants</translate> === |
[[Special:MyLanguage/normal|normal]]<br/> | [[Special:MyLanguage/normal|normal]]<br/> | ||
[[Special:MyLanguage/points|points]]<br/> | [[Special:MyLanguage/points|points]]<br/> | ||
|} | |} | ||
Revision as of 08:29, 24 August 2018
Supported platforms:
Available since: Gideros 2012.09.6
Description
Contains information about contact relative to the world
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)
Example content of b2.WorldManifold
[normal] => Table {
{
[y] => -1
[x] => 0
}
[points] => Table {
{
[1] => Table {
{
[y] => 319.92502212524
[x] => 99.999997615814
}
}
Methods |
EventsConstants |
