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Trouble understanding error and fixing program

solidMGSsnake (2)
The lecturer made an OO Zombie game in C++, I was following it along fine in class. However I decided to take a look at the code when I got home as I wanted to mess around with it, but for whatever reason the code doesn't work. There are errors. I don't know if the lecturer modified the program or what. Anyhow I'd appreciate it if anyone would know how to fix it. Thanks.

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//main.cpp

#include <iostream>
#include <stdlib.h>
#include "Character.h"
#include "StoryEventHandler.h"

struct zombie



{
	int hunger;
	int speed;

	void setHunger(int a)
	{
		hunger = a;
		setSpeed(hunger * 2);
	}
	int getHunger()
	{
		return hunger;
	}

	void setSpeed(int b)
	{
		speed = b;
	}
	int getSpeed()
	{
		return speed;
	}

	void print()
	{

		switch (hunger)
		{ 
		case 1:
		case 2:
			std::cout << "belly is full.... it shuffles slowly" << std::endl;
			break;
		case 3:
		case 4:
			std::cout << "his tummy rumbles.... it meanders threateningly" << std::endl;
			break;
		case 5:
		case 6:
			std::cout << "hunger consumes the zombie.... it breaks into a crazed run" << std::endl;
			break;

		case 7:
		case 8:
			std::cout << "ravenous would describe this accurately.... it begins to leap and run awkwardly" << std::endl;
			break;
		default:
			std::cout << "run...." << std::endl;
		}

		std::cout << "Speed is " << getSpeed();
	}

};


/*int main()
{


	zombie ted;
	int randhunger = rand() % 10 + 1;
	ted.setHunger(randhunger);
	//ted.print();

	//give the player some options
	std::cout << "\nThere is a zombie in front of you.... \n" << std::endl;
	ted.print();
	std::cout << "\n1. Run \n 2. FIGHT!!!!!!" << std::endl;

	int userInput = -1;

	userInput = std::cin.get();

	if (userInput == 1)
	{
		if (ted.getHunger() >= 5){
			std::cout << "You feel the flesh being torn from your body. CONGRADULATIONS!" << std::endl;
		}
		else{
			std::cout << "You escape the zombie. He gives you a puppy dog look... awww" << std::endl;
		}

	}
	else
	{
		int randomno = rand() % 10 + 1;

		if (3 + randomno > ted.getHunger())
		{
			std::cout << "You beat the zombie with the nearest blunt object.... I hope you're happy..." << std::endl;

		}
		else
		{
			std::cout << "If you can't beat 'em join 'em... You're a zombie HARRY!!!" << std::endl;
		}

	}











	int wait = std::cin.get();
}*/


	int main()
{
	Character* playerOne = new Character();
	Character* playerTwo = new Character();
	playerOne->setHealth(10);
	playerTwo->setHealth(10);
	playerOne->setStrength(20);
	playerTwo->setStrength(16);
	playerOne->setDefense(8);
	playerTwo->setDefense(14);

	StoryEventHandler storyHandler;

	std::cout << "Let's Fight!";

	bool swapAttackDefend = false;

	while (playerOne->state == CharacterState::ALIVE && playerTwo->state == CharacterState::ALIVE)
	{
		if (!swapAttackDefend)
		{
			storyHandler.Fight(playerOne, playerTwo);
			swapAttackDefend = true;
		}
		else
		{
			storyHandler.Fight(playerTwo, playerOne);
				swapAttackDefend = false;
		}
	}

	if (playerOne->state == CharacterState::DEAD)
	{
		std::cout << "Player Two wins!!!";
	}
	if (playerTwo->state == CharacterState::DEAD)
	{
		std::cout << "Player One wins!!";
	}




	int wait = std::cin.get();
}




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//StoryEventHandler.h

/*
*	This class will handle the following story events:
*	FIGHT: this takes in two characters and sets the state of those characters (ALIVE, DEAD) and health
*	CHOICE: this asks the user to choose between two option and sets characters health based on the choices
*	the major method will be getNextStoryPoint() which will give a random story point to the user
*/

#include "Character.h"

class StoryEventHandler
{
public:

	//constructor
	StoryEventHandler();
	

	//deconstructor
	~StoryEventHandler();
	
	void Fight(Character* attacker, Character* defender);
	

	//calls a random next choice
	void getNextStoryPoint();

private:

	//private method fight
	

	//private method choice
	void Choice();
};




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//Character.h

enum CharacterState {ALIVE, DEAD};

class Character
{
public:
	Character();
	~Character(){};

	//getters
	int getHealth(){return health;}
	int getStrength(){return strength;}
	int getDefense(){return defense;}

	//setters
	void setHealth(int newhealth);
	void setStrength(int newstrength){strength = newstrength;}
	void setDefense(int newdefense){defense = newdefense;}
	

	CharacterState state;
//private:
	//private variables
	int health, strength, defense;
	
};



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//Character.cpp

#include "Character.h"

Character::Character()
{
	health = 0;
	strength = 0;
	defense = 0;
	state = CharacterState::ALIVE;
}

void Character::setHealth(int newhealth)
{
	health = newhealth;

	if (health <= 0)
	{
		state = CharacterState::DEAD;
	}
}


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//StoryEventHanndler.cpp

#include "StoryEventHandler.h"
#include <iostream>

StoryEventHandler::StoryEventHandler()
{
	//initialize variables here
}

/*StoryEventHandler::StoryEventHandler()
{

}
*/
void StoryEventHandler::getNextStoryPoint()
{

}

void StoryEventHandler::Fight(Character* attacker, Character* defender)
{

	std::cout << "Beginning Attack \n";
	if (attacker->getStrength() < -defender->getDefense())		//if pointer use ->getHealth instead of .getHealth
	{
		int temphealth = defender->getHealth();
		int damage = attacker->getStrength() - defender->getDefense();
		temphealth = temphealth - damage;
		defender->setHealth(temphealth);
		std::cout << "Attacker hits dealing" << damage << " DAMAGE!! \n";

	}
	else
	{
		std::cout << "Attacker Misses!! \n";
	}
}

void StoryEventHandler::Choice()
{

}


Here are the errors I'm getting:

Error C2027 use of undefined type 'CharacterState' main.cp 158
Error C2011 'CharacterState': 'enum' type redefinition Character.h 1
Error C2011 'Character': 'class' type redefinition Character.h 4
Error C2027 use of undefined type 'Character' main.cpp 125
Error C2227 left of '->{ctor}' must point to class/struct/union/generic type main.cpp 125
Error C2027 use of undefined type 'Character' main.cpp 126
Error C2227 left of '->{ctor}' must point to class/struct/union/generic type main.cpp 126
Error C2027 use of undefined type 'Character' main.cpp 127
Error C2227 left of '->setHealth' must point to class/struct/union/generic type main.cpp 127
Error C2027 use of undefined type 'Character' main.cpp 128
Error C2227 left of '->setHealth' must point to class/struct/union/generic type main.cpp 128
solidMGSsnake (2)
So I think the culprit here is Character.h. and the enum CharacterState. It's not working right but for the life of my i can't see what is wrong. I says i'm redefining the enum, it's it's only defined as ALIVE, DEAD once and it worked in class. It also says it's not defined? I just don't get it, i'd greatly appreciate help.

The line numbers are probably all one off because i added the name of the file to the start of each file.

Also I didn't have room, here's a more complete list of the errors:

Severity Code Description Project File Line
Error C2011 'CharacterState': 'enum' type redefinition ZombieOO c:\users\owner\desktop\zombieoo\zombieoo\Character.h 1
Error C2011 'Character': 'class' type redefinition ZombieOO c:\users\owner\desktop\zombieoo\zombieoo\Character.h 4
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 125
Error C2227 left of '->{ctor}' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 125
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 126
Error C2227 left of '->{ctor}' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 126
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 127
Error C2227 left of '->setHealth' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 127
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 128
Error C2227 left of '->setHealth' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 128
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 129
Error C2227 left of '->setStrength' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 129
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 130
Error C2227 left of '->setStrength' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 130
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 131
Error C2227 left of '->setDefense' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 131
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 132
Error C2227 left of '->setDefense' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 132
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 140
Error C2227 left of '->state' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 140
Error C2027 use of undefined type 'CharacterState' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 140
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 154
Error C2227 left of '->state' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 154
Error C2027 use of undefined type 'CharacterState' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 154
Error C2027 use of undefined type 'Character' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 158
Error C2227 left of '->state' must point to class/struct/union/generic type ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 158
Error C2027 use of undefined type 'CharacterState' ZombieOO C:\Users\Owner\Desktop\ZombieOO\ZombieOO\main.cpp 158
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