Difference between revisions of "B2.WorldManifold"
From GiderosMobile
(6 intermediate revisions by 2 users not shown) | |||
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__NOTOC__ | __NOTOC__ | ||
<!-- GIDEROSOBJ:b2.WorldManifold --> | <!-- 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/> |
− | === | + | |
− | + | === Description === | |
− | === | + | Contains information about contact relative to the world. |
− | '''Checking collisions from bottom using b2.Contact''' | + | |
− | < | + | === Examples === |
+ | '''Checking collisions from bottom using b2.Contact''' | ||
+ | <syntaxhighlight 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() | ||
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isTouchingGround = false | isTouchingGround = false | ||
end | end | ||
− | end)</ | + | end) |
− | '''Example content of b2.WorldManifold''' | + | </syntaxhighlight> |
− | < | + | |
+ | '''Example content of b2.WorldManifold''' | ||
+ | <syntaxhighlight lang="lua"> | ||
+ | [normal] => Table { | ||
{ | { | ||
[y] => -1 | [y] => -1 | ||
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[x] => 99.999997615814 | [x] => 99.999997615814 | ||
} | } | ||
− | }</ | + | } |
+ | </syntaxhighlight> | ||
+ | |||
{|- | {|- | ||
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
− | === | + | === Methods === |
+ | |||
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
− | === | + | === Events === |
− | === | + | === Constants === |
− | [[ | + | [[normal]]<br/><!--GIDEROSCST:normal table--> |
− | [[ | + | [[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 |