Difference between revisions of "B2.WorldManifold"
From GiderosMobile
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'''<translate>Supported platforms</translate>:''' [[File:Platform android.png]][[File:Platform ios.png]][[File:Platform mac.png]][[File:Platform pc.png]][[File:Platform html5.png]][[File:Platform winrt.png]][[File:Platform win32.png]]<br/> | '''<translate>Supported platforms</translate>:''' [[File:Platform android.png]][[File:Platform ios.png]][[File:Platform mac.png]][[File:Platform pc.png]][[File:Platform html5.png]][[File:Platform winrt.png]][[File:Platform win32.png]]<br/> | ||
'''<translate>Available since</translate>:''' Gideros 2012.09.6<br/> | '''<translate>Available since</translate>:''' Gideros 2012.09.6<br/> | ||
| + | |||
=== <translate>Description</translate> === | === <translate>Description</translate> === | ||
| − | + | Contains information about contact relative to the world. | |
| + | |||
=== <translate>Examples</translate> === | === <translate>Examples</translate> === | ||
| − | '''Checking collisions from bottom using b2.Contact''' | + | '''Checking collisions from bottom using b2.Contact''' |
| − | <source lang="lua">local isTouchingGround = false | + | <source lang="lua"> |
| + | local isTouchingGround = false | ||
world:addEventListener(Event.BEGIN_CONTACT, function(e) | world:addEventListener(Event.BEGIN_CONTACT, function(e) | ||
local manifold = e.contact:getWorldManifold() | local manifold = e.contact:getWorldManifold() | ||
| Line 23: | Line 26: | ||
isTouchingGround = false | isTouchingGround = false | ||
end | end | ||
| − | end)</source> | + | end) |
| − | '''Example content of b2.WorldManifold''' | + | </source> |
| − | <source lang="lua">[normal] => Table { | + | |
| + | '''Example content of b2.WorldManifold''' | ||
| + | <source lang="lua"> | ||
| + | [normal] => Table { | ||
{ | { | ||
[y] => -1 | [y] => -1 | ||
| Line 37: | Line 43: | ||
[x] => 99.999997615814 | [x] => 99.999997615814 | ||
} | } | ||
| − | }</source> | + | } |
| + | </source> | ||
| + | |||
{|- | {|- | ||
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
=== <translate>Methods</translate> === | === <translate>Methods</translate> === | ||
| + | |||
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
=== <translate>Events</translate> === | === <translate>Events</translate> === | ||
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[[Special:MyLanguage/points|points]]<br/><!-- GIDEROSCST:points table--> | [[Special:MyLanguage/points|points]]<br/><!-- GIDEROSCST:points table--> | ||
|} | |} | ||
| + | |||
| + | ---- | ||
| + | *'''[[LiquidFun]]''' | ||
Revision as of 16:42, 18 February 2020
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 |
