axmol/cocos/navmesh/CCNavMeshObstacle.cpp

/****************************************************************************
 Copyright (c) 2015-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
 
 http://www.cocos2d-x.org
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
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 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
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 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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#include "navmesh/CCNavMeshObstacle.h"
#if CC_USE_NAVMESH

#include "navmesh/CCNavMesh.h"
#include "2d/CCNode.h"
#include "2d/CCScene.h"
#include "recast/DetourTileCache/DetourTileCache.h"

NS_CC_BEGIN

NavMeshObstacle* NavMeshObstacle::create(float radius, float height)
{
    auto ref = new (std::nothrow) NavMeshObstacle();
    if (ref && ref->initWith(radius, height))
    {
        ref->autorelease();
        return ref;
    }
    CC_SAFE_DELETE(ref);
    return nullptr;
}

const std::string& NavMeshObstacle::getNavMeshObstacleComponentName()
{
    static std::string comName = "___NavMeshObstacleComponent___";
    return comName;
}

NavMeshObstacle::NavMeshObstacle()
: _radius(0.0f)
, _height(0.0f)
, _syncFlag(NODE_AND_NODE)
, _obstacleID(-1)
, _tileCache(nullptr)
{

}

cocos2d::NavMeshObstacle::~NavMeshObstacle()
{

}

bool NavMeshObstacle::initWith(float radius, float height)
{
    _radius = radius;
    _height = height;
    setName(getNavMeshObstacleComponentName());
    return true;
}

void cocos2d::NavMeshObstacle::removeFrom(dtTileCache* /*tileCache*/)
{
    _tileCache->removeObstacle(_obstacleID);
    _tileCache = nullptr;
    _obstacleID = -1;
}

void cocos2d::NavMeshObstacle::addTo(dtTileCache *tileCache)
{
    _tileCache = tileCache;
    Mat4 mat = _owner->getNodeToWorldTransform();
    _tileCache->addObstacle(&mat.m[12], _radius, _height, &_obstacleID);
}

void cocos2d::NavMeshObstacle::onExit()
{
    if (_obstacleID == -1) return;
    Component::onExit();
    auto scene = _owner->getScene();
    if (scene && scene->getNavMesh()){
        scene->getNavMesh()->removeNavMeshObstacle(this);
    }
}

void cocos2d::NavMeshObstacle::onEnter()
{
    if (_obstacleID != -1) return;
    Component::onEnter();
    auto scene = _owner->getScene();
    if (scene && scene->getNavMesh()){
        scene->getNavMesh()->addNavMeshObstacle(this);
    }
}

void cocos2d::NavMeshObstacle::postUpdate(float /*delta*/)
{
    if ((_syncFlag & OBSTACLE_TO_NODE) != 0)
        syncToNode();
}

void cocos2d::NavMeshObstacle::preUpdate(float /*delta*/)
{
    if ((_syncFlag & NODE_TO_OBSTACLE) != 0)
        syncToObstacle();
}

void NavMeshObstacle::syncToNode()
{
    if (_tileCache){
        auto obstacle = _tileCache->getObstacleByRef(_obstacleID);
        if (obstacle){
            Vec3 localPos = Vec3(obstacle->pos[0], obstacle->pos[1], obstacle->pos[2]);
            if (_owner->getParent())
                _owner->getParent()->getWorldToNodeTransform().transformPoint(localPos, &localPos);
            _owner->setPosition3D(localPos);
            _radius = obstacle->radius;
            _height = obstacle->height;
        }
    }
}

void cocos2d::NavMeshObstacle::setRadius(float radius)
{
    _radius = radius;
}

void cocos2d::NavMeshObstacle::setHeight(float height)
{
    _height = height;
}

void NavMeshObstacle::syncToObstacle()
{
    if (_tileCache){
        auto obstacle = _tileCache->getObstacleByRef(_obstacleID);
        if (obstacle){
            Vec3 worldPos = Vec3(obstacle->pos[0], obstacle->pos[1], obstacle->pos[2]);
            Mat4 mat = _owner->getNodeToWorldTransform();
            if ((mat.m[12] != obstacle->pos[0] && mat.m[13] != obstacle->pos[1] && mat.m[14] != obstacle->pos[2])
                || obstacle->radius != _radius
                || obstacle->height != _height){
                _tileCache->removeObstacle(_obstacleID);
                _tileCache->addObstacle(&mat.m[12], _radius, _height, &_obstacleID);
            }
        }
    }
}

NS_CC_END

#endif //CC_USE_NAVMESH