I've been debugging this error for the last 2 hours, and knowing myself I won't be able to sleep if I don't ask for help before I go to bed. I'm writing a model loader for my game, and just for now I'm using a pretty flimsy method to split strings. However, it works on nearly identical lines, then randomly doesn't. I'm using string.substr(), and I believe the error means its trying to start at a location that doesn't exist in the string. The call stack says its happening on this line:
v1 = v1.substr(s.find(",")+1);
and by using a breakpoint that prints a message, it says
Vertex 1 is using "1,1" and the entire string is "173,1,1 175,1,1 174,1,1"
where Vertex 1 is the value of v1, and string is the value of s.
This is the entire function:
FaceData data;
s = s.substr(5); //remove "FACE "
string v1, v2, v3;
//vertex 1
v1 = s.substr(0, s.find(" "));
data.vertexIndexes[0] = atoi(v1.substr(0, s.find(",")).c_str());
v1 = v1.substr(s.find(",")+1);
data.textureIndexes[0] = atoi(v1.substr(0, s.find(",")).c_str());
v1 = v1.substr(s.find(",")+1);
data.normalIndexes[0] = atoi(v1.c_str());
//vertex 2
s = s.substr(s.find(" ")+1);
v2 = s.substr(0, s.find(" "));
data.vertexIndexes[1] = atoi(v2.substr(0, s.find(",")).c_str());
v2 = v2.substr(s.find(",")+1);
data.textureIndexes[1] = atoi(v2.substr(0, s.find(",")).c_str());
v2 = v2.substr(s.find(",")+1);
data.normalIndexes[1] = atoi(v2.c_str());
//vertex 3
s = s.substr(s.find(" ")+1);
v3 = s;
data.vertexIndexes[2] = atoi(v3.substr(0, s.find(",")).c_str());
v3 = v3.substr(s.find(",")+1);
data.textureIndexes[2] = atoi(v3.substr(0, s.find(",")).c_str());
v3 = v3.substr(s.find(",")+1);
data.normalIndexes[2] = atoi(v3.c_str());
return data;
the std::string 's' being passed to the function always looks like this: "FACE X,X,X X,X,X X,X,X" where x is a number.
This is the only way I could find to split a string...
Now, I don't understand why it is getting this error here... It seems like it's almost just happening randomly. I can't understand why it won't work with
173,1,1 175,1,1 174,1,1
but it will work with
See Question&Answers more detail:os175,2,2 176,2,2 175,2,2