兄弟-1索引下标是怎么通过测试的

[weyenrooney]

gridworld.py
420行
_LIB.env_get_info(self.game, -1, b"global_minimap",
buf.ctypes.data_as(ctypes.POINTER(ctypes.c_float)))

c++ 712行

void GridWorld::get_info(GroupHandle group, const char *name, void *void_buffer) {
// for more information from the engine, add items here

std::vector<Agent*> &agents = groups[group].get_agents();

[Kipsora]

It appears to be a bug. Could you open a PR to fix it? I guess it is because the group agents are not useful for getting global_minimap anyway that this bug could never cause fatal exceptions on some machines.

[weyenrooney]

search text in gridworld.py with "_LIB.env_get_info(self.game, -1",it appears 5 times
I fix it in c++ as follow
void GridWorld::get_info(GroupHandle group, const char *name, void *void_buffer) {
// for more information from the engine, add items here
if (group<0 || group>=groups.size())
{
//LOG(FATAL) << "index group out of range " << name;
//return;
group = 0;
}

I build a windows version and debug it

[merrymercy]

@Kipsora is correct. The variable std::vector<Agent*> &agents is never used in this case, so it does not trigger any invalid memory access.