From 43047269abfcdfe41b973d778cd44669b39f2a8a Mon Sep 17 00:00:00 2001
From: Daniel Evans <dan@devans.xyz>
Date: Thu, 19 Oct 2017 00:01:29 +0100
Subject: [PATCH] Offset vehicle spawn height to account for dimensions

Should prevent vehicles spawning in, and falling through, the ground.
---
 rwengine/src/engine/GameWorld.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/rwengine/src/engine/GameWorld.cpp b/rwengine/src/engine/GameWorld.cpp
index ccf1f327..abfabd8d 100644
--- a/rwengine/src/engine/GameWorld.cpp
+++ b/rwengine/src/engine/GameWorld.cpp
@@ -864,6 +864,17 @@ VehicleObject* GameWorld::tryToSpawnVehicle(VehicleGenerator& gen) {
         /// @todo use zone information to decide vehicle id
     }
 
+    auto model = data->findModelInfo<VehicleModelInfo>(id);
+    RW_ASSERT(model);
+    if (model) {
+        auto info = data->vehicleInfo.find(model->handling_);
+        if (info != data->vehicleInfo.end()) {
+            const auto& handling = info->second->handling;
+            position.z +=
+                (handling.dimensions.z / 2.f) - handling.centerOfMass.z;
+        }
+    }
+
     auto vehicle = createVehicle(id, position);
     vehicle->setHeading(gen.heading);
     vehicle->setLifetime(GameObject::TrafficLifetime);