Core/Collision: Ported dynamic line of sight patch by Silverice from MaNGOS and

added lots of improvements
Please re-extract vmaps

1 files changed, 206 insertions, 0 deletions

diff --git a/src/server/collision/DynamicTree.cpp b/src/server/collision/DynamicTree.cpp
new file mode 100644
index 00000000000..1d6877d1209
--- /dev/null
+++ b/src/server/collision/DynamicTree.cpp
@@ -0,0 +1,206 @@
+/*
+ * Copyright (C) 2008-2012 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "DynamicTree.h"
+//#include "QuadTree.h"
+//#include "RegularGrid.h"
+#include "BoundingIntervalHierarchyWrapper.h"
+
+#include "Log.h"
+#include "RegularGrid.h"
+#include "Timer.h"
+#include "GameObjectModel.h"
+#include "ModelInstance.h"
+
+using VMAP::ModelInstance;
+using G3D::Ray;
+
+template<> struct HashTrait< GameObjectModel>{
+    static size_t hashCode(const GameObjectModel& g) { return (size_t)(void*)&g; }
+};
+
+template<> struct PositionTrait< GameObjectModel> {
+    static void getPosition(const GameObjectModel& g, Vector3& p) { p = g.getPosition(); }
+};
+
+template<> struct BoundsTrait< GameObjectModel> {
+    static void getBounds(const GameObjectModel& g, G3D::AABox& out) { out = g.getBounds();}
+    static void getBounds2(const GameObjectModel* g, G3D::AABox& out) { out = g->getBounds();}
+};
+
+static bool operator == (const GameObjectModel& mdl, const GameObjectModel& mdl2){
+    return &mdl == &mdl2;
+}
+
+
+int valuesPerNode = 5, numMeanSplits = 3;
+
+int UNBALANCED_TIMES_LIMIT = 5;
+int CHECK_TREE_PERIOD = 200;
+
+typedef RegularGrid2D<GameObjectModel, BIHWrap<GameObjectModel> > ParentTree;
+
+struct DynTreeImpl : public ParentTree/*, public Intersectable*/
+{
+    typedef GameObjectModel Model;
+    typedef ParentTree base;
+
+    DynTreeImpl() :
+        rebalance_timer(CHECK_TREE_PERIOD),
+        unbalanced_times(0)
+    {
+    }
+
+    void insert(const Model& mdl)
+    {
+        base::insert(mdl);
+        ++unbalanced_times;
+    }
+
+    void remove(const Model& mdl)
+    {
+        base::remove(mdl);
+        ++unbalanced_times;
+    }
+
+    void balance()
+    {
+        base::balance();
+        unbalanced_times = 0;
+    }
+
+    void update(uint32 difftime)
+    {
+        if (!size())
+            return;
+
+        rebalance_timer.Update(difftime);
+        if (rebalance_timer.Passed())
+        {
+            rebalance_timer.Reset(CHECK_TREE_PERIOD);
+            if (unbalanced_times > 0)
+                balance();
+        }
+    }
+
+    TimeTrackerSmall rebalance_timer;
+    int unbalanced_times;
+};
+
+DynamicMapTree::DynamicMapTree() : impl(*new DynTreeImpl())
+{
+}
+
+DynamicMapTree::~DynamicMapTree()
+{
+    delete &impl;
+}
+
+void DynamicMapTree::insert(const GameObjectModel& mdl)
+{
+    impl.insert(mdl);
+}
+
+void DynamicMapTree::remove(const GameObjectModel& mdl)
+{
+    impl.remove(mdl);
+}
+
+bool DynamicMapTree::contains(const GameObjectModel& mdl) const
+{
+    return impl.contains(mdl);
+}
+
+void DynamicMapTree::balance()
+{
+    impl.balance();
+}
+
+int DynamicMapTree::size() const
+{
+    return impl.size();
+}
+
+void DynamicMapTree::update(uint32 t_diff)
+{
+    impl.update(t_diff);
+}
+
+struct DynamicTreeIntersectionCallback
+{
+    bool did_hit;
+    uint32 phase_mask;
+    DynamicTreeIntersectionCallback(uint32 phasemask) : did_hit(false), phase_mask(phasemask) {}
+    bool operator()(const Ray& r, const GameObjectModel& obj, float& distance)
+    {
+        did_hit = obj.intersectRay(r, distance, true, phase_mask);
+        return did_hit;
+    }
+    bool didHit() const { return did_hit;}
+};
+
+struct DynamicTreeIntersectionCallback_WithLogger
+{
+    bool did_hit;
+    uint32 phase_mask;
+    DynamicTreeIntersectionCallback_WithLogger(uint32 phasemask) : did_hit(false), phase_mask(phasemask)
+    {
+        sLog->outDebug(LOG_FILTER_MAPS, "Dynamic Intersection log");
+    }
+    bool operator()(const Ray& r, const GameObjectModel& obj, float& distance)
+    {
+        sLog->outDebug(LOG_FILTER_MAPS, "testing intersection with %s", obj.name.c_str());
+        bool hit = obj.intersectRay(r, distance, true, phase_mask);
+        if (hit)
+        {
+            did_hit = true;
+            sLog->outDebug(LOG_FILTER_MAPS, "result: intersects");
+        }
+        return hit;
+    }
+    bool didHit() const { return did_hit;}
+};
+
+bool DynamicMapTree::isInLineOfSight(float x1, float y1, float z1, float x2, float y2, float z2, uint32 phasemask) const
+{
+    Vector3 v1(x1,y1,z1), v2(x2,y2,z2);
+
+    float maxDist = (v2 - v1).magnitude();
+
+    if (!G3D::fuzzyGt(maxDist, 0) )
+        return true;
+
+    Ray r(v1, (v2-v1) / maxDist);
+    DynamicTreeIntersectionCallback callback(phasemask);
+    impl.intersectRay(r, callback, maxDist, v2);
+
+    return !callback.did_hit;
+}
+
+float DynamicMapTree::getHeight(float x, float y, float z, float maxSearchDist, uint32 phasemask) const
+{
+    Vector3 v(x,y,z);
+    Ray r(v, Vector3(0,0,-1));
+    DynamicTreeIntersectionCallback callback(phasemask);
+    impl.intersectZAllignedRay(r, callback, maxSearchDist);
+
+    if (callback.didHit())
+        return v.z - maxSearchDist;
+    else
+        return -G3D::inf();
+}
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