Error flood game crashes (and editor too) with physics KinematicBody2D, please help!

AppleJus

I have KinematicBody2D nodes that move with move_and_collide, and when they do i get a flood of errors (as shown below) and the game crashes, and the editor too most of the times... details below:

This does not happen when the move_and_collide is commented, and it does happen with move_and_slide, or just a regular position update. I tried with different rendering settings (GLES2/3, mma, hdr, etc) and the same thing happens...

Godot Engine v3.2.1.stable.official - https://godotengine.org
OpenGL ES 3.0 Renderer: Quadro M1000M/PCIe/SSE2
Using GLES2 video driver
OpenGL ES 2.0 Renderer: Quadro M1000M/PCIe/SSE2
WASAPI: wFormatTag = 65534
WASAPI: nChannels = 2
WASAPI: nSamplesPerSec = 48000
WASAPI: nAvgBytesPerSec = 384000
WASAPI: nBlockAlign = 8
WASAPI: wBitsPerSample = 32
WASAPI: cbSize = 22
WASAPI: detected 2 channels
WASAPI: audio buffer frames: 1962 calculated latency: 44ms

...
ERROR: getornull: Condition "!id_map.has(p_rid.get_data())" is true. Returned: __null
   At: ./core/rid.h:160
ERROR: getornull: Condition "!id_map.has(p_rid.get_data())" is true. Returned: __null
   At: ./core/rid.h:160
ERROR: getornull: Condition "!id_map.has(p_rid.get_data())" is true. Returned: __null
   At: ./core/rid.h:160
ERROR: Resumed function '_physics_process()' after yield, but class instance is gone. At script: res://prefabs/Bullet.gd:462
   At: modules/gdscript/gdscript_function.cpp:1844
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84

... this goes forever until the game crashes.

I realy appreciate your Help!

SIsilicon28

Could you show us your code? We can get more insight on the cause of this that way.

AppleJus

var angle
...
if endpos != position:
	angle  =  (endpos - position).normalized() * glob.speed

if angle != null:
	collis = move_and_collide(angle * delta)

SIsilicon28

The error shows that yields are involved. Perhaps they might have something to do with it?

TwistedTwigleg

Also, it looks like line 462 in Bullet.gd is related to the issue. Based on the error and the name of the script, I would guess that somewhere there is a yield that deals with the bullet in one way or another, but the bullet gets destroyed before the yield resumes, which leads to the error. If this is the case, I would suggest using internal times and signals instead of a yield, as then you can more easily handle destroyed nodes.

Megalomaniak

The bullet is unsafely removed from scene before it can complete the yield far as I can tell. Make sure to implement a check to see if the node can be safely removed before removing it.

AppleJus

Thanks all for this great help, but the error is not related to yield... it was a

yield(the_tree.create_timer(0.01), "timeout")

line that i had put by error, so when i removed it, i still have the same errors. i now have this error stack...

   At: ./core/rid.h:160
ERROR: getornull: Condition "!id_map.has(p_rid.get_data())" is true. Returned: __null
   At: ./core/rid.h:160
ERROR: getornull: Condition "!id_map.has(p_rid.get_data())" is true. Returned: __null
   At: ./core/rid.h:160
ERROR: getornull: Condition "!id_map.has(p_rid.get_data())" is true. Returned: __null
   At: ./core/rid.h:160
ERROR: getornull: Condition "!id_map.has(p_rid.get_data())" is true. Returned: __null
   At: ./core/rid.h:160
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: _gl_debug_print: GL ERROR: Source: OpenGL        Type: Error     ID: 1282        Severity: High  Message: GL_INVALID_OPERATION error generated. Texture name does not refer to a texture object generated by OpenGL.
   At: drivers/gles3/rasterizer_gles3.cpp:123
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
   At: ./core/self_list.h:84
ERROR: remove: Condition "p_elem->_root != this" is true.
...continues forever...