Why collision event begin is late?

Physics
#1

Why the collision began event is late.

local physics = require( "physics" ) physics.start() physics.setGravity( 0, 0 ) physics.setDrawMode( "debug" ) local staticLine = display.newLine( 0, 100, 1000, 100 ) staticLine.strokeWidth = 1 physics.addBody( staticLine, "static", {isSensor = true}) local ball = display.newCircle( 40, 300, 20 ) physics.addBody( ball, {radius = 20, isSensor = true} ) ball:setLinearVelocity( 300, -300 ) ball:addEventListener( "collision", function(event) if (event.phase == "began") then physics.pause( ) end end ) 

physics pauses when at position  1.png

But I want to pause it at position  2.png

How can I solve it?

Thanks!

#2

You might be better off removing the velocity from the ball when the collision happens, rather than pausing physics completely. Also, certain physics APIs need to be set via a timer, because the “game world” is essentially locked when physics calculations are taking place. See the below thread for more information

https://forums.coronalabs.com/topic/52605-strange-behaviour-when-changing-velocity/

#3

You might be better off removing the velocity from the ball when the collision happens, rather than pausing physics completely. Also, certain physics APIs need to be set via a timer, because the “game world” is essentially locked when physics calculations are taking place. See the below thread for more information

https://forums.coronalabs.com/topic/52605-strange-behaviour-when-changing-velocity/