can I get the physics body properties for the object the player collides with?

Solar2D General Questions/Discussion
#1

How would I get the physics body properties for the object the player collides with?  (e.g. density, bounce etc)

That is within a collision event, e.g.

local function onPlayerCollision(self, event)     local objectHit = event.other     -- How to get physics properties for the "objectHit" end player.collision = onPlayerCollision player:addEventListener( "collision", player )
#2

I’m not the physics expert, but have you tried:

objectHit.density?

objectHit.bounce?

Rob

#3

actually not working in this case - basically my player figure is hitting a ground object tile (using MTE).  So it’s a physics action being triggered (i.e. onPlayerCollision).  Using a “pretty.dump” function I just see the following.  Was just interested in accessing the parameters to help debug…

&nbsp; other = { &nbsp; &nbsp; index = 3, &nbsp; &nbsp; tempScaleY = 32, &nbsp; &nbsp; properties = { &nbsp; &nbsp; &nbsp; physics = "true" &nbsp; &nbsp; }, &nbsp; &nbsp; locX = 12, &nbsp; &nbsp; level = 1, &nbsp; &nbsp; levelPosY = 368, &nbsp; &nbsp; tempScaleX = 32, &nbsp; &nbsp; tile = "2", &nbsp; &nbsp; layer = 4, &nbsp; &nbsp; makeSprite = "function: 0x7fb492b2da60", &nbsp; &nbsp; \_proxy = "userdata: 0x7fb492b2da18", &nbsp; &nbsp; physics = true, &nbsp; &nbsp; levelPosX = 368, &nbsp; &nbsp; tileSet = 1, &nbsp; &nbsp; locY = 12, &nbsp; &nbsp; \_class = { &nbsp; &nbsp; &nbsp; removeEventListener = "function: 0x7fb48afe7ef0", &nbsp; &nbsp; &nbsp; addEventListener = "function: 0x7fb48afe7e90", &nbsp; &nbsp; &nbsp; \_\_index = \<cycle\> &nbsp; &nbsp; } &nbsp; }, &nbsp;
#4

Hi Greg,

I don’t believe these parameters are accessible in this way. I suppose you’d need to set them as properties of the object when you add the body, and then read them during the collision.

Brent

#5

I’m not the physics expert, but have you tried:

objectHit.density?

objectHit.bounce?

Rob

#6

actually not working in this case - basically my player figure is hitting a ground object tile (using MTE).  So it’s a physics action being triggered (i.e. onPlayerCollision).  Using a “pretty.dump” function I just see the following.  Was just interested in accessing the parameters to help debug…

&nbsp; other = { &nbsp; &nbsp; index = 3, &nbsp; &nbsp; tempScaleY = 32, &nbsp; &nbsp; properties = { &nbsp; &nbsp; &nbsp; physics = "true" &nbsp; &nbsp; }, &nbsp; &nbsp; locX = 12, &nbsp; &nbsp; level = 1, &nbsp; &nbsp; levelPosY = 368, &nbsp; &nbsp; tempScaleX = 32, &nbsp; &nbsp; tile = "2", &nbsp; &nbsp; layer = 4, &nbsp; &nbsp; makeSprite = "function: 0x7fb492b2da60", &nbsp; &nbsp; \_proxy = "userdata: 0x7fb492b2da18", &nbsp; &nbsp; physics = true, &nbsp; &nbsp; levelPosX = 368, &nbsp; &nbsp; tileSet = 1, &nbsp; &nbsp; locY = 12, &nbsp; &nbsp; \_class = { &nbsp; &nbsp; &nbsp; removeEventListener = "function: 0x7fb48afe7ef0", &nbsp; &nbsp; &nbsp; addEventListener = "function: 0x7fb48afe7e90", &nbsp; &nbsp; &nbsp; \_\_index = \<cycle\> &nbsp; &nbsp; } &nbsp; }, &nbsp;
#7

Hi Greg,

I don’t believe these parameters are accessible in this way. I suppose you’d need to set them as properties of the object when you add the body, and then read them during the collision.

Brent