how to detect a hero leave the ground

albert988

there is a hero in my game and the map move from left to right

at first, the hero is on the ground as an object in the tiled map

but after then the hero will come up against precipice, however in my game, the hero "walk" through it instead of falling down .

My question is how can I detect the hero have leave the ground and make him falling down?

thanhquan1512

EDIT: since I didn't understand the case, this answer was out of topic.

albert988

still don't clearly understand your question. But if you want to check whether the hero is in ground or not, you can use this:

ground:hitTestPoint(hero:getX(), hero:getY())

to checks whether the hero (in global coordinate system) is in bounds of the ground.

thanks to @thanhquan1512, but I want more detail, so I upload my code

In the game if hero don't jump, he won't fall down

please help

thanhquan1512

Hi albert,

In hero.lua, I try to set friction = 0 in hero body:

self.body:createFixture {shape = shape, density = 1.2, restitution = 0.2, friction = 0}

I tested and it worked fine with 1st hole. However the next hole he still didn't fall don't know why

tkhnoman

It might be super late, or you might already get the answer, but i will answer it anyway.

On hero.lua, line 16:

self.body = world:createBody {type = b2.DYNAMIC_BODY, fixedRotation = true,allowSleep = false}

Never set hero/enemy to allow sleep.