hmm…I’m on 4.6.3, and the above isn’t working…has any of these solutions been tested in 4.x builds?
Could you elaborate on “not working”?
Sorry, I’m editing this post because after reading it again, it made very little sense.
I’m testing on a year old iPad air, and with Mono, everything works. with il2CPP, I see no errors, but there is no actual pathfinding happening on the device. I rebuilt all my graphs and am using ASTAR_NO_ZIP as well as all of the other mobile changes you suggest in the Docs.
…I also tested on an iPad mini3 tonight, and got the same result
not sure if this mean anything, but this comes up in the log at startup
Trying to load data from a newer version of the A* Pathfinding Project
Current version: 3.6 Data version: 3.6.255.255
Ben
Can you enable ASTAR_NO_ZIP in the free version?
ASTAR_NO_ZIP should work in the free version as well. However the optimizations tab is not enabled there so you will have to find the relevant scripts (search for ASTAR_NO_ZIP) and enable it.
@HaroldBalls
Hm… There is no version 3.6.255.255, so I would suspect that is an IL2CPP bug 
Do you think you could send it to Unity so that they could fix it?
Hey guys!
Can you find a solution for solve this bug? I mean A*PathFinding in 64bit iOS (with il2cpp),
I try ASTAR_NO_ZIP and I resolve exception with Pathfinding.Ionic.Zip.Reduced this OK
But next I got exception: No metadata found in serialized data. I repeat it happens on iOS with il2cpp !
How can fix this?
Thanks
Hi
After you have enabled ASTAR_NO_ZIP you will need to recreate all your graphs, have you done that?
Aron, Thanks for fast answer!
Yes, I recreate graphs and seems all ok but in Editor, when I build to devices I got an exception which I wrote above!
Ok. You said
Does that mean you have enabled ASTAR_NO_JSON or have you done something else?
Yes I enabled ASTAR_NO_JSON, and ASTAR_NO_ZIP also ASTAR_FAST_NO_EXCEPTIONS
Well… this sounds like yet another unity IL2CPP bug which is hard for me to do anything about unfortunately.
Just to get some more information, you could try opening the SimpleZipReplacement.cs script and in the Read method, add some Debug.Log calls to log what things it actually contains.
Thanks Aron, I’ll try it right now
Here my enabled options in Otimization section http://take.ms/afws4
And exception in xCode, after that A* not work
Caught exception while deserializing data.
System.Exception: No metadata found in serialized data.
at AIPath+<RepeatTrySearchPath>c__Iterator0.Reset () [0x00000] in <filename unknown>:0
at Pathfinding.Serialization.AstarSerializer.DeserializeMeta (Pathfinding.Serialization.Zip.ZipEntry entry) [0x00000] in <filename unknown>:0
at Pathfinding.Serialization.AstarSerializer.OpenDeserialize (System.Byte[] bytes) [0x00000] in <filename unknown>:0
at Pathfinding.AstarData.DeserializeGraphs (System.Byte[] bytes) [0x00000] in <filename unknown>:0
at Pathfinding.AstarData.LoadFromCache () [0x00000] in <filename unknown>:0
at Pathfinding.AstarData.Awake () [0x00000] in <filename unknown>:0
at AstarPath.Initialize () [0x00000] in <filename unknown>:0
at AstarPath.Awake () [0x00000] in <filename unknown>:0
at uScript_Lerper..ctor () [0x00000] in <filename unknown>:0
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:LogWarning(Object)
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()So! I insert Debug.Log in SimpleZipReplacement.cs http://take.ms/y1R9f
And next you can see logs from xCode:
*
Unloading 7 Unused Serialized files (Serialized files now loaded: 0)
UnloadTime: 5.066791 ms
name graph0.binary length 229 bytes 229
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name graph0_nodes.binary length 0 bytes 0
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name graph0_conns.binary length 0 bytes 0
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name graph_references.binary length 20 bytes 20
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name length 141 bytes 141
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name length 0 bytes 0
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name length 218 bytes 218
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
Caught exception while deserializing data.
System.Exception: No metadata found in serialized data.
at AIPath+<RepeatTrySearchPath>c__Iterator0.Reset () [0x00000] in <filename unknown>:0
at Pathfinding.Serialization.AstarSerializer.DeserializeMeta (Pathfinding.Serialization.Zip.ZipEntry entry) [0x00000] in <filename unknown>:0
at Pathfinding.Serialization.AstarSerializer.OpenDeserialize (System.Byte[] bytes) [0x00000] in <filename unknown>:0
at Pathfinding.AstarData.DeserializeGraphs (System.Byte[] bytes) [0x00000] in <filename unknown>:0
at Pathfinding.AstarData.LoadFromCache () [0x00000] in <filename unknown>:0
at Pathfinding.AstarData.Awake () [0x00000] in <filename unknown>:0
at AstarPath.Initialize () [0x00000] in <filename unknown>:0
at AstarPath.Awake () [0x00000] in <filename unknown>:0
at uScript_Lerper..ctor () [0x00000] in <filename unknown>:0
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:LogWarning(Object)
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
As you can see in logs, not any “meta” word, but my exception connect with “meta” ! Also you can see in logs, sometime name is empty.
Any ideas?
There are a bunch of sections which seem to be deserialized to have empty names. That’s definitely something wrong. No section should have an empty name. Do you think you could save this file (Save & Load tab) and send it to me and I will try to figure out what it is doing.
Aron here that file from Editor: http://take.ms/QyzzK
(I zipped it)
P.S: It fine works in editor, but not work on iOS device with il2cpp (I test only in Unity5)
Ok, I verified the file in a hex editor. And it is definitely valid. So IL2CPP is interpreting something incorrectly.
More specifically, when the ReadInt32 method is called, it seems to use only the first byte instead of all 4 bytes. This works for the first 3 sections because their lengths are 229, 0 and 0 respectively (all < 255), but the fourth section has a length of 144404 bytes which does not fit into the first byte.
I verified that the first byte of the size field of the fourth section (graph_references.binary) is indeed equal to 20 when interpreted as an unsigned byte, but if you read all 4 bytes for the field it gives 144404 which is the correct value.
Do you think it would be possible for you to send a bug report to Unity with this info (maybe link to this thread)?
I have also attached an image which shows the position where IL2CPP seems to interpret the data incorrectly.
Hello Aron, after some research I’am write a little extension (for parse int32 from binary stream)
here it is:
public static class BinaryReaderExtension
{
public static bool IsEndOfStream(this System.IO.BinaryReader reader)
{
return reader.BaseStream.Position == reader.BaseStream.Length;
}
public static int ReadInt32(this System.IO.BinaryReader reader)
{
int result = 0;
if (reader.IsEndOfStream())
return result;
byte[] intBytes = null;
intBytes = reader.ReadBytes(4);
if(intBytes.Length > 0)
result = System.BitConverter.ToInt32(intBytes, 0);
return result;
}
}
And change small code: http://take.ms/dNaEV
P.S.: Now I see correct values
After it I don’t see exception which I saw yesterday, but current my broblem in that:
"Node data did not match with bounds data. Probably a change to the bounds/width/depth data was made after scanning the graph just prior to saving it. Nodes will be discarded"
Here my new log from xCode:
Unloading 7 Unused Serialized files (Serialized files now loaded: 0)
UnloadTime: 3.962083 ms
7
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name graph0.binary length 229 bytes 229
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name graph0_nodes.binary length 0 bytes 0
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name graph0_conns.binary length 0 bytes 0
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name graph_references.binary length 90004 bytes 90004
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name graph0_extra.binary length 495004 bytes 495004
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name graph0_references.binary length 0 bytes 0
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
name meta.binary length 95 bytes 95
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.Serialization.Zip.ZipFile:Read(Stream)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
Trying to load data from a newer version of the A* Pathfinding Project
Current version: 3.6 Data version: 3.6.255.255
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:LogWarning(Object)
Pathfinding.Serialization.AstarSerializer:OpenDeserialize(Byte[])
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
PostDeserialization228 width 150 depth 150
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:Log(Object)
Pathfinding.GridGraph:PostDeserialization()
VortexEffect:OnRenderImage(RenderTexture, RenderTexture)
Pathfinding.Serialization.AstarSerializer:PostDeserialization()
Pathfinding.AstarData:DeserializeGraphsPart(AstarSerializer)
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
Node data did not match with bounds data. Probably a change to the bounds/width/depth data was made after scanning the graph just prior to saving it. Nodes will be discarded
uScript_Lerper:.ctor()
UnityEngine.Debug:Internal_Log(Int32, String, Object)
UnityEngine.Debug:LogWarning(Object)
Pathfinding.GridGraph:PostDeserialization()
VortexEffect:OnRenderImage(RenderTexture, RenderTexture)
Pathfinding.Serialization.AstarSerializer:PostDeserialization()
Pathfinding.AstarData:DeserializeGraphsPart(AstarSerializer)
Pathfinding.AstarData:DeserializeGraphs(Byte[])
Pathfinding.AstarData:LoadFromCache()
Pathfinding.AstarData:Awake()
AstarPath:Initialize()
AstarPath:Awake()
uScript_Lerper:.ctor()
(Filename: /Users/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebug.gen.cpp Line: 56)
System memory in use before: 28.5 MB.
System memory in use after: 29.0 MB.
Unloading 23 unused Assets to reduce memory usage. Loaded Objects now: 17861.
Total: 22.612499 ms (FindLiveObjects: 5.821666 ms CreateObjectMapping: 0.844708 ms MarkObjects: 13.439040 ms DeleteObjects: 2.500083 ms)
After 20 minutes I found a problem with wrong nodes count: http://take.ms/cL8Zf
It main il2cpp bug wrong ReadInt32 method implementation (instead 4 bytes it read only one!)
Soo, after a few hours BinaryReaderExtension looks this:
public static class BinaryReaderExtension
{
public static bool IsEndOfStream(this System.IO.BinaryReader reader)
{
return reader.BaseStream.Position == reader.BaseStream.Length;
}
public static int ReadInt32(this System.IO.BinaryReader reader)
{
int result = 0;
if (reader.IsEndOfStream())
return result;
byte[] intBytes = null;
intBytes = reader.ReadBytes(4);
if (intBytes.Length > 0)
result = System.BitConverter.ToInt32(intBytes, 0);
return result;
}
public static uint ReadUInt32(this System.IO.BinaryReader reader)
{
uint result = 0;
if (reader.IsEndOfStream())
return result;
byte[] intBytes = null;
intBytes = reader.ReadBytes(4);
if (intBytes.Length > 0)
result = System.BitConverter.ToUInt32(intBytes, 0);
return result;
}
public static ushort ReadUInt16(this System.IO.BinaryReader reader)
{
ushort result = 0;
if (reader.IsEndOfStream())
return result;
byte[] intBytes = null;
intBytes = reader.ReadBytes(2);
if (intBytes.Length > 0)
result = System.BitConverter.ToUInt16(intBytes, 0);
return result;
}
}
In A* PathFinding I replace any ReadUInt32 and ReadInt32 and ReadUint16 to appropriate method from BinaryReaderExtension class, and now it work (But I don’t know how correct or not, but I don’t see any exceptions in xCode). Also I think, while Unity not fix this bug, need write a wrapper for parsing BinaryReader stream like a BinaryReaderExtension.
Bug Description (Unity5.0.0f4 iOS 64Bit il2cpp): ReadInt32 and other bugged methods get read only ONE BYTE instead 4 byte for 32 bit methods, and 2 bit for 16 bit methods, from input sbyte stream (Aron correct me please, my English is very Bad for describe bug reason)
BuggedMethods (methods that return incorrect value): ReadInt32, ReadUInt32, ReadInt16, ReadUInt16
P.S.: methods ReadSingle work good (just in case I would have to override it in BinaryReaderExtension too)
Today I write bugReport to Unity (if Aron not create bugreport yet)!
Hope this helps to anyone 
1 Like
In the 5.0.1 this bug Resolved!
1 Like
Yep, I also just uploaded version 3.6.1 (beta) which has some additional fixes for WebGL.