//
// 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.
//

#pragma once

#include "DetourAssert.h"
#include "DetourNavMesh.h"
#include "Sample.h"

class NavmeshFlags
{
	const dtNavMesh* navmesh = nullptr;
	std::vector<std::vector<unsigned char>> tileFlags;

public:
	void init(const dtNavMesh* newNavmesh);
	void clearAllFlags();
	[[nodiscard]] unsigned char getFlags(dtPolyRef ref) const;
	void setFlags(dtPolyRef ref, unsigned char flags);
};

/// Prune navmesh to only accessible locations from a point.
class NavMeshPruneTool : public SampleTool
{
	Sample* sample = nullptr;
	NavmeshFlags* flags = nullptr;
	float hitPos[3];
	bool hitPosSet = false;

public:
	NavMeshPruneTool() = default;
	~NavMeshPruneTool() override;
	NavMeshPruneTool(const NavMeshPruneTool&) = delete;
	NavMeshPruneTool& operator=(const NavMeshPruneTool&) = delete;
	NavMeshPruneTool(const NavMeshPruneTool&&) = delete;
	NavMeshPruneTool& operator=(const NavMeshPruneTool&&) = delete;

	SampleToolType type() override { return SampleToolType::NAVMESH_PRUNE; }
	void init(Sample* newSample) override { sample = newSample; }
	void reset() override;
	void drawMenuUI() override;
	void onClick(const float* s, const float* p, bool shift) override;
	void onToggle() override {}
	void singleStep() override {}
	void update(const float /*dt*/) override {}
	void render() override;
	void drawOverlayUI() override;
};
