ITask.h

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#pragma once

#include "tree/TreeNode.h"
#include "common/Types.h"

namespace ai {

#define TASK_CLASS_CTOR(TaskName) \
    TaskName(const std::string& name, const std::string& parameters, const ::ai::ConditionPtr& condition) : \
            ::ai::ITask(name, parameters, condition)

#define TASK_CLASS_DTOR(TaskName) virtual ~TaskName()

#define TASK_CLASS(TaskName) \
    TASK_CLASS_CTOR(TaskName) {}\
    TASK_CLASS_DTOR(TaskName) {}

class ITask: public TreeNode {
protected:
    TreeNodeStatus execute(const AIPtr& entity, int64_t deltaMillis) override {
        if (TreeNode::execute(entity, deltaMillis) == CANNOTEXECUTE) {
            return CANNOTEXECUTE;
        }

#if AI_EXCEPTIONS
        try {
#endif
            return state(entity, doAction(entity, deltaMillis));
#if AI_EXCEPTIONS
        } catch (...) {
            ai_log_error("Exception while running task %s of type %s", _name.c_str(), _type.c_str());
        }
        return state(entity, EXCEPTION);
#endif
    }
public:
    ITask(const std::string& name, const std::string& parameters, const ConditionPtr& condition) :
            TreeNode(name, parameters, condition) {
    }

    virtual ~ITask() {
    }

    virtual TreeNodeStatus doAction(const AIPtr& entity, int64_t deltaMillis) = 0;

    bool addChild(const TreeNodePtr& /*child*/) override {
        return false;
    }
};

}