[11902] Import Recast Navigation

Import Recast Navigation as third party dependency
Credits go to Mikko Mononen memon at inside dot org

dep/recastnavigation/RecastDemo/Include/CrowdTool.h

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+//
+// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
+//
+// This software is provided 'as-is', without any express or implied
+// warranty.  In no event will the authors be held liable for any damages
+// arising from the use of this software.
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would be
+//    appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//    misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+//
+
+#ifndef CROWDTOOL_H
+#define CROWDTOOL_H
+
+#include "Sample.h"
+#include "DetourNavMesh.h"
+#include "DetourObstacleAvoidance.h"
+#include "ValueHistory.h"
+#include "CrowdManager.h"
+
+// Tool to create crowds.
+
+class CrowdTool : public SampleTool
+{
+	Sample* m_sample;
+	unsigned char m_oldFlags;
+	
+	float m_targetPos[3];
+	dtPolyRef m_targetRef;
+	
+	bool m_expandDebugDraw;
+	bool m_showLabels;
+	bool m_showCorners;
+	bool m_showTargets;
+	bool m_showCollisionSegments;
+	bool m_showPath;
+	bool m_showVO;
+	bool m_showOpt;
+	bool m_showGrid;
+	bool m_showNodes;
+	bool m_showPerfGraph;
+	
+	bool m_expandOptions;
+	bool m_anticipateTurns;
+	bool m_optimizeVis;
+	bool m_optimizeTopo;
+	bool m_useVO;
+	bool m_drunkMove;
+	
+	bool m_run;
+	
+	CrowdManager m_crowd;
+		
+	ValueHistory m_crowdTotalTime;
+	ValueHistory m_crowdRvoTime;
+	ValueHistory m_crowdSampleCount;
+	
+	enum ToolMode
+	{
+		TOOLMODE_CREATE,
+		TOOLMODE_MOVE_TARGET,
+	};
+	ToolMode m_mode;
+	
+public:
+	CrowdTool();
+	~CrowdTool();
+	
+	virtual int type() { return TOOL_CROWD; }
+	virtual void init(Sample* sample);
+	virtual void reset();
+	virtual void handleMenu();
+	virtual void handleClick(const float* s, const float* p, bool shift);
+	virtual void handleToggle();
+	virtual void handleStep();
+	virtual void handleUpdate(const float dt);
+	virtual void handleRender();
+	virtual void handleRenderOverlay(double* proj, double* model, int* view);
+};
+
+#endif // CROWDTOOL_H