Box2D collisions not being called on stand still objects

[jamessimo]

Hey guys, I was wondering if any box2D (javascript) users here could help me with this issue I am having. 

 

I have some boxes that will float to the top of a block of water. This function works fine

//if inside the water 

this.waterObj.GetBody().SetLinearVelocity(new b2Vec2(0,-2));

I want my water take the boxes like a wave, however when the water block collides with the boxes, the collision handler is NOT called… 

 

However if I drop my boxes into the water it works fine (even if the water block is moving) 

 

I think this is to do with the collision handler not being called on my blocks if they are stand still, I have set

the 

bodyDef.allowSleep = false;

at creation and even reiterated throughout the boxes to check that sleeping is off; but this hasn’t changed anything, I even set the whole world sleep to false.

 

Can anyone help me get the water collision handler to trigger if it hits my stand still (not sleeping) blocks? Cheers!

[jamessimo]

To help illustrate my problem, here you see the blue water rising, If moving blocks (the maroon + orange one) they float as expected. But the blocks at the bottom are at a stand still. 

[furka]

at creation and even reiterated throughout the boxes to check that sleeping is off; but this hasn’t changed anything, I even set the whole world sleep to false.

 

 

 

 

do you mean they are actually sleeping and allowSleep = false; does nothing, or do you mean doing this doesn't actually fix your problem?

 

Could it be that you are using the wrong collision handler? You have BeginContact and PreSolve

[jamessimo]

Oh forgot to mention that I fixed this problem by doubling the AABB collision handler.

the box would be fixutre A if clicked but if it was collided by the water it would be fixture B. So now I just say somthing like 

if(contact.fixtureA == box || contact.fixtureB == box){//THEY ALL FLOAT}