axmol/core/navmesh/CCNavMeshObstacle.cpp

/****************************************************************************
 Copyright (c) 2015-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

 https://axis-project.github.io/

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 ****************************************************************************/

#include "navmesh/CCNavMeshObstacle.h"
#if AX_USE_NAVMESH

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

NS_AX_BEGIN

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

std::string_view 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)
{}

axis::NavMeshObstacle::~NavMeshObstacle() {}

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

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

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

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

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

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

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

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

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

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

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

NS_AX_END

#endif  // AX_USE_NAVMESH