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Server: properly implement NavMesh hotswap

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The hotswap feature is now fully functional and no longer crashes the game. The NavMesh query states had to be reset.
This commit is contained in:
Kawe Mazidjatari 2024-07-29 12:32:49 +02:00
parent fb1d1ba2e2
commit f694269072
1 changed files with 17 additions and 4 deletions
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21
src/game/server/ai_utility.cpp
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@ -15,6 +15,8 @@
#include "vscript/languages/squirrel_re/vsquirrel.h"
#include "ai_basenpc.h"
static ConVar navmesh_always_reachable("navmesh_always_reachable", "0", FCVAR_DEVELOPMENTONLY, "Marks goal poly from agent poly as reachable regardless of table data ( !slower! )");
//-----------------------------------------------------------------------------
@ -118,10 +120,6 @@ bool Detour_IsLoaded()
//-----------------------------------------------------------------------------
// Purpose: hot swaps the NavMesh with the current files on the disk
// (All hulls will be reloaded! If NavMesh for hull no longer exist, it will be kept empty!!!)
//
// TODO: Currently when hotswapping, the game crashes if there's AI in the world.
// Loop over all CAI_BaseNPC instances, and call m_pPathfinder->m_navQuery.init()
// to clear NavMesh cache !!!
//-----------------------------------------------------------------------------
void Detour_HotSwap()
{
@ -135,6 +133,21 @@ void Detour_HotSwap()
if (!Detour_IsLoaded())
Error(eDLL_T::SERVER, NOERROR, "%s - Failed to hot swap NavMesh\n", __FUNCTION__);
const int numAis = g_AI_Manager->NumAIs();
CAI_BaseNPC** const pAis = g_AI_Manager->AccessAIs();
// Reinitialize the AI's navmesh query to update the navmesh cache.
for (int i = 0; i < numAis; i++)
{
CAI_BaseNPC* const npc = pAis[i];
CAI_Pathfinder* const pathFinder = npc->GetPathfinder();
const NavMeshType_e navType = NAI_Hull::NavMeshType(npc->GetHullType());
const dtNavMesh* const navMesh = Detour_GetNavMeshByType(navType);
pathFinder->GetNavMeshQuery()->init(navMesh, 2048);
}
g_pServerScript->ExecuteCodeCallback("CodeCallback_OnNavMeshHotSwapEnd");
}