axmol/cocos/navmesh/CCNavMeshObstacle.h

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 Copyright (c) 2015-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
 
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#ifndef __CCNAV_MESH_OBSTACLE_H__
#define __CCNAV_MESH_OBSTACLE_H__

#include "base/ccConfig.h"
#if CC_USE_NAVMESH

#include "2d/CCComponent.h"

#include "base/CCRef.h"
#include "math/Vec3.h"
#include "recast/DetourNavMesh.h"
#include "recast/DetourTileCache.h"

NS_CC_BEGIN

/**
 * @addtogroup 3d
 * @{
 */

/** @brief NavMeshObstacle: The code wrapping of dtTileCacheObstacle, use component mode. */
class CC_DLL NavMeshObstacle : public Component
{
    friend class NavMesh;
public:

    enum NavMeshObstacleSyncFlag
    {
        NONE = 0,
        NODE_TO_OBSTACLE = 1,
        OBSTACLE_TO_NODE = 2,
        NODE_AND_NODE = NODE_TO_OBSTACLE | OBSTACLE_TO_NODE,
    };

    /**
    Create obstacle, shape is cylinder

    @param radius The radius of obstacle.
    @param height The height of obstacle.
    */
    static NavMeshObstacle* create(float radius, float height);
    static const std::string& getNavMeshObstacleComponentName();

    virtual void onEnter() override;
    virtual void onExit() override;

    /** Set radius of obstacle */
    void setRadius(float radius);

    /** Get radius of obstacle */
    float getRadius() const { return _radius; }

    /** Set height of obstacle */
    void setHeight(float height);

    /** Get height of obstacle */
    float getHeight() const { return _height; }

    /**
    * synchronization between node and obstacle is time consuming, you can skip some synchronization using this function
    */
    void setSyncFlag(const NavMeshObstacleSyncFlag &flag) { _syncFlag = flag; }
    NavMeshObstacleSyncFlag getSyncFlag() const { return _syncFlag; }

    /** synchronize parameter to obstacle. */
    void syncToObstacle();

    /** synchronize parameter to node. */
    void syncToNode();

CC_CONSTRUCTOR_ACCESS:
    NavMeshObstacle();
    virtual ~NavMeshObstacle();

    bool initWith(float radius, float height);

private:

    void addTo(dtTileCache *tileCache);
    void removeFrom(dtTileCache *tileCache);
    void preUpdate(float delta);
    void postUpdate(float delta);

private:

    float _radius;
    float _height;
    NavMeshObstacleSyncFlag _syncFlag;
    dtObstacleRef _obstacleID;
    dtTileCache *_tileCache;
};

/** @} */

NS_CC_END

#endif //CC_USE_NAVMESH

#endif // __CCNAV_MESH_OBSTACLE_H__