recastnavigation/RecastDemo/Include/Sample.h

//
// 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 <cstdint>
#include "SampleInterfaces.h"

class Sample;
class InputGeom;
class dtNavMesh;
class dtNavMeshQuery;
class dtCrowd;

/// Tool types.
enum class SampleToolType : uint8_t
{
	NONE = 0,

	TILE_EDIT,
	TILE_HIGHLIGHT,
	TEMP_OBSTACLE,
	NAVMESH_TESTER,
	NAVMESH_PRUNE,
	OFFMESH_CONNECTION,
	CONVEX_VOLUME,
	CROWD,

	MAX_TOOLS
};

/// These are just sample areas to use consistent values across the samples.
/// The use should specify these base on his needs.
enum SamplePolyAreas
{
	SAMPLE_POLYAREA_GROUND,
	SAMPLE_POLYAREA_WATER,
	SAMPLE_POLYAREA_ROAD,
	SAMPLE_POLYAREA_DOOR,
	SAMPLE_POLYAREA_GRASS,
	SAMPLE_POLYAREA_JUMP
};
enum SamplePolyFlags
{
	SAMPLE_POLYFLAGS_WALK		= 1 << 0, //0x01,		// Ability to walk (ground, grass, road)
	SAMPLE_POLYFLAGS_SWIM		= 1 << 1, //0x02,		// Ability to swim (water).
	SAMPLE_POLYFLAGS_DOOR		= 1 << 2, //0x04,		// Ability to move through doors.
	SAMPLE_POLYFLAGS_JUMP		= 1 << 3, //0x08,		// Ability to jump.
	SAMPLE_POLYFLAGS_DISABLED	= 1 << 4, //0x10,		// Disabled polygon
	SAMPLE_POLYFLAGS_ALL		= ~0 //0xffff	// All abilities.
};

enum SamplePartitionType
{
	SAMPLE_PARTITION_WATERSHED,
	SAMPLE_PARTITION_MONOTONE,
	SAMPLE_PARTITION_LAYERS
};

class SampleDebugDraw : public DebugDrawGL
{
public:
	virtual unsigned int areaToCol(unsigned int area);
};

struct SampleTool
{
	virtual ~SampleTool();

	virtual SampleToolType type() = 0;
	virtual void init(Sample* sample) = 0;
	virtual void reset() = 0;
	virtual void handleMenu() = 0;
	virtual void handleClick(const float* s, const float* p, bool shift) = 0;
	virtual void handleRender() = 0;
	virtual void handleRenderOverlay(double* proj, double* model, int* view) = 0;
	virtual void handleToggle() = 0;
	virtual void handleStep() = 0;
	virtual void handleUpdate(float dt) = 0;
};

struct SampleToolState {
	virtual ~SampleToolState();
	virtual void init(Sample* sample) = 0;
	virtual void reset() = 0;
	virtual void handleRender() = 0;
	virtual void handleRenderOverlay(double* proj, double* model, int* view) = 0;
	virtual void handleUpdate(float dt) = 0;
};

class Sample
{
protected:
	InputGeom* m_inputGeometry;
	dtNavMesh* m_navMesh;
	dtNavMeshQuery* m_navQuery;
	dtCrowd* m_crowd;

	unsigned char m_navMeshDrawFlags;

	float m_cellSize;
	float m_cellHeight;
	float m_agentHeight;
	float m_agentRadius;
	float m_agentMaxClimb;
	float m_agentMaxSlope;
	float m_regionMinSize;
	float m_regionMergeSize;
	float m_edgeMaxLen;
	float m_edgeMaxError;
	float m_vertsPerPoly;
	float m_detailSampleDist;
	float m_detailSampleMaxError;
	int m_partitionType;

	bool m_filterLowHangingObstacles;
	bool m_filterLedgeSpans;
	bool m_filterWalkableLowHeightSpans;

	SampleTool* m_tool;
	SampleToolState* m_toolStates[static_cast<unsigned long>(SampleToolType::MAX_TOOLS)];

	BuildContext* m_buildContext;

	SampleDebugDraw m_debugDraw;

	dtNavMesh* loadAll(const char* path);
	void saveAll(const char* path, const dtNavMesh* mesh);

public:
	Sample();
	virtual ~Sample();
	Sample(const Sample&) = delete;
	Sample(const Sample&&) = delete;
	Sample& operator=(const Sample&) = delete;
	Sample& operator=(const Sample&&) = delete;

	void setContext(BuildContext* ctx) { m_buildContext = ctx; }

	void setTool(SampleTool* tool);
	SampleToolState* getToolState(const int type) const { return m_toolStates[type]; }
	void setToolState(const int type, SampleToolState* s) { m_toolStates[type] = s; }

	SampleDebugDraw& getDebugDraw() { return m_debugDraw; }

	virtual void handleSettings();
	virtual void handleTools();
	virtual void handleDebugMode();
	virtual void handleClick(const float* s, const float* p, bool shift);
	virtual void handleToggle();
	virtual void handleStep();
	virtual void handleRender();
	virtual void handleRenderOverlay(double* proj, double* model, int* view);
	virtual void handleMeshChanged(InputGeom* geom);
	virtual bool handleBuild();
	virtual void handleUpdate(float dt);
	virtual void collectSettings(struct BuildSettings& settings);

	virtual InputGeom* getInputGeom() { return m_inputGeometry; }
	virtual dtNavMesh* getNavMesh() { return m_navMesh; }
	virtual dtNavMeshQuery* getNavMeshQuery() { return m_navQuery; }
	virtual dtCrowd* getCrowd() { return m_crowd; }
	virtual float getAgentRadius() { return m_agentRadius; }
	virtual float getAgentHeight() { return m_agentHeight; }
	virtual float getAgentClimb() { return m_agentMaxClimb; }

	unsigned char getNavMeshDrawFlags() const { return m_navMeshDrawFlags; }
	void setNavMeshDrawFlags(unsigned char flags) { m_navMeshDrawFlags = flags; }

	void updateToolStates(float dt);
	void initToolStates(Sample* sample);
	void resetToolStates();
	void renderToolStates();
	void renderOverlayToolStates(double* proj, double* model, int* view);

	void resetCommonSettings();
	void handleCommonSettings();
};