BugFix: Agent variables would not be synced to device if HostAgentCreation was interruped by DeviceAgentVector.

Author: Robadob

src/flamegpu/runtime/agent/DeviceAgentVector_impl.cu

@@ -190,12 +190,15 @@ void DeviceAgentVector_impl::_insert(size_type pos, size_type count) {
                     h_ptr[i] = cuda_agent.nextID();
                 }
             }
-            _changedAfter(ID_VARIABLE_NAME, pos);
         } else {
             THROW exception::InvalidOperation("Internal agent ID variable was not found, "
                 "in DeviceAgentVector_impl._insert().");
         }
     }
+    // Update change detail for all variables
+    for (const auto& [v, _] : agent->variables) {
+        _changedAfter(v, pos);
+    }
     // No unbound buffers, return
     if (unbound_buffers.empty())
         return;
@@ -239,19 +242,6 @@ void DeviceAgentVector_impl::_insert(size_type pos, size_type count) {
     if (unbound_host_buffer_size != _size) {
         THROW exception::InvalidOperation("Unbound buffers have gone out of sync, in DeviceAgentVector::_insert().\n");
     }
-    // Update change detail for all variables
-    for (const auto& v : agent->variables) {
-        // Does it exist in change map
-        auto change = change_detail.find(v.first);
-        if (change == change_detail.end()) {
-            change_detail.emplace(v.first, std::pair<size_type, size_type>{pos, _size});
-        } else {
-            // Inclusive min bound
-            change->second.first = change->second.first > pos ? pos : change->second.first;
-            // Exclusive max bound
-            change->second.second = _size;
-        }
-    }
 }
 void DeviceAgentVector_impl::_erase(size_type pos, size_type count) {
     // No unbound buffers, return

tests/test_cases/runtime/agent/test_host_agent_creation.cu

@@ -860,7 +860,7 @@ TEST(HostAgentCreationTest, AgentID_Consistent_Combined) {
 }
 FLAMEGPU_AGENT_FUNCTION(AgentID_Consistent_Agent, flamegpu::MessageNone, flamegpu::MessageNone) {
     FLAMEGPU->setVariable<id_t>("id_copy_from_device", FLAMEGPU->getID());
-    FLAMEGPU->setVariable<id_t>("id_copy_copy_from_device", FLAMEGPU->getVariable<id_t>("id_copy_copy_from_device"));
+    FLAMEGPU->setVariable<id_t>("id_copy_copy_from_device", FLAMEGPU->getVariable<id_t>("id_copy"));
     return flamegpu::ALIVE;
 }
 FLAMEGPU_STEP_FUNCTION(AgentID_Consistent_Step_Agent) {