Difference between revisions of "B2.WorldManifold"
From GiderosMobile
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__NOTOC__ | __NOTOC__ | ||
| − | '''Supported platforms:''' <br/> | + | <!-- GIDEROSOBJ:b2.WorldManifold --> |
| + | '''Supported platforms:''' [[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/> | ||
'''Available since:''' Gideros 2012.09.6<br/> | '''Available since:''' Gideros 2012.09.6<br/> | ||
| + | |||
=== Description === | === Description === | ||
| − | Contains information about contact relative to the world | + | Contains information about contact relative to the world. |
| + | |||
| + | === Examples === | ||
| + | '''Checking collisions from bottom using b2.Contact''' | ||
| + | <syntaxhighlight lang="lua"> | ||
| + | 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) | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | '''Example content of b2.WorldManifold''' | ||
| + | <syntaxhighlight lang="lua"> | ||
| + | [normal] => Table { | ||
| + | { | ||
| + | [y] => -1 | ||
| + | [x] => 0 | ||
| + | } | ||
| + | [points] => Table { | ||
| + | { | ||
| + | [1] => Table { | ||
| + | { | ||
| + | [y] => 319.92502212524 | ||
| + | [x] => 99.999997615814 | ||
| + | } | ||
| + | } | ||
| + | </syntaxhighlight> | ||
| + | |||
{|- | {|- | ||
| − | | style="width: 50%;"| | + | | style="width: 50%; vertical-align:top;"| |
=== Methods === | === Methods === | ||
| − | | style="width: 50%;"| | + | |
| + | | style="width: 50%; vertical-align:top;"| | ||
=== Events === | === Events === | ||
=== Constants === | === Constants === | ||
| − | [[normal]]<br/> | + | [[normal]]<br/><!--GIDEROSCST:normal table--> |
| − | [[points]]<br/> | + | [[points]]<br/><!--GIDEROSCST:points table--> |
|} | |} | ||
| + | |||
| + | ---- | ||
| + | *'''[[LiquidFun]]''' | ||
Latest revision as of 02:06, 1 December 2023
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 |
