#include mess, errors when including a file

[tristan1333]

Alright so I'm making something, and I've got quite a few .h files. Usually I never really have had issues with them, but right now when I #include spawner.h or AI_Handler.h inside of terrain.h, I get a stream of errors. It says a bunch of classes aren't declared, and that template arguments are invalid. The issue
Main.cpp

#include <algorithm>
#include <string>
#include <SDL.h>
#include <SDL_mixer.h>
#include <SDL_image.h>
#include <SDL_ttf.h>
#include "characters.h"
#include "load_textures.h"
#include <vector>
#include <ctime>
#include <cstdlib>
#include "camera.h"
#include "renderer.h"
#include "animation_sets.h"
#include "Multi_Piece.h"
#include "AI_Handler.h"
#include "spawner.h"
#include "terrain.h"  

Characters.h

#ifndef CHARACTERS_DEF_T
#define CHARACTERS_DEF_T
#include <vector>
#include <SDL.h>
#include <string>
#include "camera.h"
#include "renderer.h"
#include "terrain.h"
#include "load_textures.h"
#include "animation_sets.h"
#include "Multi_Piece.h"
#include <cstdlib>
#include <cmath> 

load_textures

#ifndef LOAD_TEXTURES_FUNCTIONS_T
#define LOAD_TEXTURES_FUNCTIONS_T
#include <SDL.h> 

terrain.h

#ifndef TERRAIN_DEFINES_THL
#define TERRAIN_DEFINES_THL
#include <SDL.h>
#include <vector>
#include <ctime>
#include <cstdlib>
#include "spawner.h"
#include "AI_Handler.h" 

camera.h

#ifndef CAMERA_DEFINES_T
#define CAMERA_DEFINES_T 

animations_sets

#ifndef ANIMATION_SETS_A
#define ANIMATION_SETS_A
#include <SDL.h>
#include <vector> 

AI_Handler.h

#ifndef AI_DEF_VECT
#define AI_DEF_VECT
#include "SDL.h"
#include "characters.h"
#include <vector>
#include "camera.h" 

spawner.h

#ifndef _SPAWNERS_FILE_
#define _SPAWNERS_FILE_
#include "characters.h"
#include <vector>
#include "AI_Handler.h"
#include "SDL.h"
#include "camera.h" 

It's alot sorry, but I have no idea what's causing, so I'm including everything.

[Handy Andy]

Hello tristan1333,

All of your header files start with #ifndef something , but where is your #endif at the end of the file? Another possibility could be the order you have put the header files in main. Maybe it is just me, but I like to include header files with "<>" first and then files with "" second. After that you may be trying to include a header file that depends on another header file first, but is included after.

Hope that helps,

Andy

[tristan1333]

I've found the issue, I'm trying to make terrain access spawner/AI_Handler, and both of those access characters, and characters has access to terrain. Is there a way to have terrain link to AI_Handler/spawner while retaining the character links? I might have an idea, but if there's some way you're meant to do it, I'd like to find out thanks

[Zhuge]

You probably need to forward declare something rather than including the entire header. See http://www.cplusplus.com/forum/articles/10627/