1 files changed, 49 insertions, 0 deletions
diff --git a/src/server/game/Movement/MovementDefines.cpp b/src/server/game/Movement/MovementDefines.cpp
new file mode 100644
index 00000000000..ec133d07c68
--- /dev/null
+++ b/src/server/game/Movement/MovementDefines.cpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2008-2018 TrinityCore <https://www.trinitycore.org/>
+ *
+ * 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 "Common.h"
+#include "MovementDefines.h"
+#include "ObjectDefines.h"
+#include "Position.h"
+#include <algorithm>
+
+ // ---- ChaseRange ---- //
+
+ChaseRange::ChaseRange(float range) : MinRange(range > CONTACT_DISTANCE ? 0 : range - CONTACT_DISTANCE), MinTolerance(range), MaxRange(range + CONTACT_DISTANCE), MaxTolerance(range) { }
+ChaseRange::ChaseRange(float _minRange, float _maxRange) : MinRange(_minRange), MinTolerance(std::min(_minRange + CONTACT_DISTANCE, (_minRange + _maxRange) / 2)), MaxRange(_maxRange), MaxTolerance(std::max(_maxRange - CONTACT_DISTANCE, MinTolerance)) { }
+ChaseRange::ChaseRange(float _minRange, float _minTolerance, float _maxTolerance, float _maxRange) : MinRange(_minRange), MinTolerance(_minTolerance), MaxRange(_maxRange), MaxTolerance(_maxTolerance) { }
+
+// ---- ChaseAngle ---- //
+
+ChaseAngle::ChaseAngle(float angle, float _tolerance/* = M_PI_4*/) : RelativeAngle(Position::NormalizeOrientation(angle)), Tolerance(_tolerance) { }
+
+float ChaseAngle::UpperBound() const
+{
+    return Position::NormalizeOrientation(RelativeAngle + Tolerance);
+}
+
+float ChaseAngle::LowerBound() const
+{
+    return Position::NormalizeOrientation(RelativeAngle - Tolerance);
+}
+
+bool ChaseAngle::IsAngleOkay(float relativeAngle) const
+{
+    float const diff = std::abs(relativeAngle - RelativeAngle);
+
+    return (std::min(diff, float(2 * M_PI) - diff) <= Tolerance);
+}