Moving platform falling

[irok84]

Hi,

 

I showed my problem on the video:
https://www.youtube.com/watch?v=7beTqZVm5f4&feature=youtu.be

 

As You see, character is falling down trough platform, but not always, only sometimes. 

It looks like it depends on computer speed, if is faster, then falling occurs less. If is slower (for example: if screen capture is enabled), then falling occurs more.

 

Collision is checked just by:

game.physics.arcade.collide(player, elevator1);

game.physics.arcade.collide(player, elevator2);

 

What I observed: if I slow down the "elevators" then falling does not occur (but i need to fix it for every speed of elevator).

[irok84]

There is second collision issue in this example. On start, character stays on green tile (floor), but look at 0:18 - he is behind the tile.

 

Anyone knows how to fix these collision/fall problems?

[irok84]

Here is jsfiddle: http://jsfiddle.net/xc5mpab4/
As You see, player is on "elevator", but after few seconds he falls down. You can move the player, so try to jump onto elevator again, player will fall again.

[valueerror]

oh you are moving the platform with a tween..  no wonder your player falls through..   i am surprised it takes so long for the player to fall through the platform to be honest.

 

 

tweening means changing the x or y coordinate directly..  its like bypassing the physicssystem..   first the platform is at y =100 next frame it is at y=120  so it kind of disappears and then shows up somewhere else and while you are beaming your platform to another y coordinate the player suddenly stands in thin air...

 

use velocity and a custom function that checks the position of the elevator and changes the direction of the velocity according to the check!

[valueerror]

  http://test.xapient.net/phaser/ALL/moving-jumpthrough-platform-final.html  here is a working example with p2 physics  but the movement of the platforms should be the same in arcade

[irok84]

I can implement platform moving as in Your example, but:

 

1. It is only linear move... ok, its not a problem, i can change move style using some calculations

2. Check my second comment in this topic - player falls not only trough moving platform, he falls from static tile (floor) too!

[Massemassimo]

Yes, my floors are all static and the player is moving only through changes of velocity. Still the same problem occurs.

[irok84]

oh you are moving the platform with a tween..  no wonder your player falls through..   i am surprised it takes so long for the player to fall through the platform to be honest.

 

 

tweening means changing the x or y coordinate directly..  its like bypassing the physicssystem..   first the platform is at y =100 next frame it is at y=120  so it kind of disappears and then shows up somewhere else and while you are beaming your platform to another y coordinate the player suddenly stands in thin air...

 

use velocity and a custom function that checks the position of the elevator and changes the direction of the velocity according to the check!

 

Thank You valueerror. I changed platform movement from tween to chenging velocity in update() and it solved my problem.