CURandomNode.h

//
//  CURandomNode.h
//  Cornell University Game Library (CUGL)
//
//  This module provides support for a random composite behavior node.  The
//  random behavior may be uniform or weighted.
//
//  BehaviorNode objects are managed by BehaviorManager, and should never
//  be allocated directly.  Instead, you create a behavior node definition
//  and pass it to a factor method in BehaviorManager.
//
//  EXPERIMENTAL: This module is experimental.  The API may change significantly
//  in future CUGL releases.
//
//  CUGL MIT License:
//      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.
//
//  Author: Apurv Sethi and Andrew Matsumoto  (with Walker White)
//  Version: 5/21/2018
//
#ifndef __CU_RANDOM_NODE_H__
#define __CU_RANDOM_NODE_H__
#include <cugl/ai/behavior/CUCompositeNode.h>
#include <random>
#include <string>
#include <vector>

namespace cugl {
    namespace ai {

class RandomNode : public CompositeNode {
#pragma mark Values
protected:
    bool _uniform;
    
    std::minstd_rand* _generator;

#pragma mark Internal Helpers

    virtual int selectChild() const override;

public:
#pragma mark -
#pragma mark Constructors

    RandomNode();

    ~RandomNode() { dispose(); }

    bool init(const std::string& name, std::minstd_rand* generator);

    void dispose() override;

#pragma mark Attributes

    bool isUniform() const { return _uniform; }

    void setUniform(bool uniform) { _uniform = uniform; }

    std::string toString(bool verbose = false) const override;
    
    virtual void query(float dt) override;
    
};

    }
}
#endif /* __CU_RANDOM_NODE_H__ */