src/engine/EntityInstance.h

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#ifndef ENTITYINSTANCE_H
#define ENTITYINSTANCE_H

#include <boost/shared_ptr.hpp>
#include <vector>
#include <iostream>
#include "System.h"
//#include "VariableTableInstance.h"
#include "EntityTemplate.h"
#include "BehaviorInstance.h"
//#include "BehaviorTemplate.h"
#include "BehaviorTemplateTable.h"

namespace green
{
                
        class EntityInstance : 
                public VariableTableInstance
        {
                protected:
                        std::vector<BehaviorInstancePtr> mBehaviors;
                        
                public:
                        EntityInstance(boost::shared_ptr<EntityInstance> copy) :
                                VariableTableInstance(VARIABLE_TABLE_INSTANCE_CAST(copy)),
                                mBehaviors(copy->mBehaviors)
                        {
                        }
                        
                        virtual void CopyFrom(boost::shared_ptr<EntityInstance> copy)
                        {
                                CHECK_SHARED(copy);
                                VariableTableInstance::CopyFrom(VARIABLE_TABLE_INSTANCE_CAST(copy));
                                mBehaviors = copy->mBehaviors;
                        }
                                                
                        EntityInstance(Key templ, EntityTemplatePtr templPtr,
                                                                                 BehaviorTemplateTablePtr behaviors) :
                                VariableTableInstance(templ)    
                        {
                                CHECK_SHARED(templPtr);
                                CHECK_SHARED(behaviors);
                                
                                for(size_t i = 0; i < templPtr->GetNumBehaviors(); i++)
                                {
                                        // Instantiate the entity's ith behavior
                                        BehaviorInstancePtr newBehavior( 
                                                        behaviors->InstantiateBehavior(templPtr->GetBehavior(i),
                                                                                                                                                                                templPtr->GetBehaviorArgs(i)));
                                        
                                        CHECK_SHARED(newBehavior);
                                        
                                        // Add the behavior instance to the entity instance's list
                                        mBehaviors.push_back(newBehavior);
                                }
                        }
                        
                        size_t GetNumBehaviors() const {
                                return mBehaviors.size();
                        }
                        
                        BehaviorInstancePtr GetBehavior(size_t behavior) {
                                ERROR_ASSERT(behavior < mBehaviors.size(), "behavior too large");
                                return mBehaviors[behavior];
                        }

        };
        typedef boost::shared_ptr<EntityInstance> EntityInstancePtr;
        #define ENTITY_INSTANCE_CAST(x) boost::dynamic_pointer_cast<EntityInstance, VariableTableInstance>(x)
}

#endif

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