Avoid windows build-dir lock by using per-version build folders

.github/workflows/check-builds.yaml

@@ -84,11 +84,8 @@ jobs:
           Invoke-Expression "vcpkg integrate install"
 
           foreach ($version in $versions) {
-              if (Test-Path -LiteralPath "build") {
-                  Remove-Item "build" -Recurse
-                  Write-Output "Deleted existing build folder"
-              }
-              Invoke-Expression "cmake -B build -DPROTOCOL_VERSION=$version -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake"
+              $buildDir = "build-$version"
+              Invoke-Expression "cmake -B $buildDir -DPROTOCOL_VERSION=$version -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake"
               if ($LASTEXITCODE -ne "0") {
                   Write-Error "cmake generation failed for version $version" -ErrorAction Stop
               }
@@ -96,7 +93,7 @@ jobs:
 
               foreach ($configuration in $configurations) {
                   Write-Output "Building version $version $configuration"
-                  Invoke-Expression "msbuild build\OpenFusion.sln /maxcpucount:8 /p:BuildInParallel=true /p:CL_MPCount=8 /p:UseMultiToolTask=true /p:Configuration=$configuration"
+                  Invoke-Expression "msbuild $buildDir\OpenFusion.sln /maxcpucount:8 /nodeReuse:false /p:BuildInParallel=true /p:CL_MPCount=8 /p:UseMultiToolTask=true /p:Configuration=$configuration"
                   if ($LASTEXITCODE -ne "0") {
                       Write-Error "msbuild build failed for version $version" -ErrorAction Stop
                   }

src/Missions.cpp

@@ -595,30 +595,33 @@ void Missions::mobKilled(CNSocket *sock, int mobid, std::map<int, int>& rolls) {
             }
 
             // drop quest item
-            if (task["m_iCSUItemNumNeeded"][j] != 0 && !isQuestItemFull(sock, task["m_iCSUItemID"][j], task["m_iCSUItemNumNeeded"][j]) ) {
-                bool drop = rolls[plr->tasks[i]] % 100 < task["m_iSTItemDropRate"][j];
-                if (drop) {
-                    dropQuestItem(sock, plr->tasks[i], 1, task["m_iCSUItemID"][j], mobid);
-
-                    /*
-                     * Workaround: The client has a bug where it only sends a TASK_END request
-                     * for the first task of multiple that met their quest item requirements
-                     * at the same time. We deal with this by sending TASK_END response packets
-                     * proactively and then silently ignoring the extra TASK_END requests it
-                     * sends afterwards.
-                     */
-                    if (isQuestItemFull(sock, task["m_iCSUItemID"][j], task["m_iCSUItemNumNeeded"][j])) {
-                        INITSTRUCT(sP_FE2CL_REP_PC_TASK_END_SUCC, end);
-                        end.iTaskNum = plr->tasks[i];
-
-                        if (!endTask(sock, plr->tasks[i]))
-                            continue;
-
-                        sock->sendPacket(end, P_FE2CL_REP_PC_TASK_END_SUCC);
+            if (task["m_iCSUItemNumNeeded"][j] != 0) {
+                if (!isQuestItemFull(sock, task["m_iCSUItemID"][j], task["m_iCSUItemNumNeeded"][j])) {
+                    bool drop = rolls[plr->tasks[i]] % 100 < task["m_iSTItemDropRate"][j];
+                    if (drop) {
+                        dropQuestItem(sock, plr->tasks[i], 1, task["m_iCSUItemID"][j], mobid);
                     }
-                } else {
-                    // fail to drop (itemID == 0)
-                    dropQuestItem(sock, plr->tasks[i], 1, 0, mobid);
+                    else {
+                        // fail to drop (itemID == 0)
+                        dropQuestItem(sock, plr->tasks[i], 1, 0, mobid);
+                    }
+                }
+                
+                /*
+                * Workaround: The client has a bug where it only sends a TASK_END request
+                * for the first task of multiple that met their quest item requirements
+                * at the same time. We deal with this by sending TASK_END response packets
+                * proactively and then silently ignoring the extra TASK_END requests it
+                * sends afterwards.
+                */
+                if (isQuestItemFull(sock, task["m_iCSUItemID"][j], task["m_iCSUItemNumNeeded"][j])) {
+                    INITSTRUCT(sP_FE2CL_REP_PC_TASK_END_SUCC, end);
+                    end.iTaskNum = plr->tasks[i];
+
+                    if (!endTask(sock, plr->tasks[i]))
+                        continue;
+
+                    sock->sendPacket(end, P_FE2CL_REP_PC_TASK_END_SUCC);
                 }
             }
         }