#include <iostream>
#include <fstream>	// File I/O
#include <cstdlib>	// exit
#include <string>	// strings

class Vertex {
	float x,y,z;
	float u,v;
};

class Model {
	private:
	
	public:
		Model();
		~Model();
		Vertex* vertex;
		std::string name;	// The name of the model
};

Model::Model() {
	vertex = NULL;	// Set it to null
}

Model::~Model() {
	delete [] vertex;	// Free the vertices
}

int main (int argc, char * const argv[]) {
	Model cube;							// The model to load
	
	std::ifstream model("axe.3ds",std::ios::in);	// The file to load
	if(!model.is_open()) {
		std::cerr << "Invalid model name";
		exit(1);
	}
	
	unsigned short chunkID;		// The ID of the chunk ( hexidecimal ) - 2 bytes
	unsigned long chunkLength;	// The length of the chunk	- 4 bytes
	unsigned char name[20];		// Name of the model
	
	while(model.peek()) {
		if(model.eof()) {
			std::cerr << "Reading past end of file";
			exit(1);
		}
		
		// Read in data about the chunk
		model.read((char*)&chunkID,2);		// Read the 2 bytes for the chunk
		int pos = model.tellg();
		std::cout << "pos " << pos << std::endl;
		model.read((char*)&chunkLength,4);	// Read the 4 bytes for the length
		pos = model.tellg();
		std::cout << "pos " << pos << std::endl;
		
		std::cout << std::hex << chunkID << std::endl;
		std::cout << std::dec << "Chunk Length:" << chunkLength << std::endl;
		
		// Which chunk are we on
		switch (chunkID) {
			// Main chunck nothing to do but don't skip	
			case 0x4d4d:
				std::cout << "Main chunk\n";
			break;
			
			// 3d Editor Chunk don't need
			case 0x3d3d:
				std::cout << "Editor chunk\n";
			break;
				
			// The Object block contains the name
			case 0x4000:
				model.read((char*)&name,20);	// Read in max of 20 bytes
				cube.name = (char*)name;		// Record the name
				std::cout << "Name of model is " << cube.name << std::endl;
			break;
				
			// The defaul case
			default:
				std::cout << "Default case\n";
				model.seekg(chunkLength - 6,std::ios::cur);	// Go to next chunk ( account for 6 bytes read )
		}				
	}
	model.close();	// Close the file
	
    return 0;
}

ChunkID: 0x4d4dChunkLength: 21824ChunkID: 0x2ChunkLength: 10ChunkID: 0x3d3dChunkLength: 21808ChunkID: 0x3d3eChunkLength: 10ChunkID: 0xafffChunkLength: 192ChunkID: 0xafffChunkLength: 166ChunkID: 0x100ChunkLength: 10ChunkID: 0x4000ChunkLength: 21424ChunkID: 0x4100ChunkLength: 21407ChunkID: 0x4110ChunkLength: 7796ChunkID: 0x4140ChunkLength: 5200ChunkID: 0x4111ChunkLength: 1306ChunkID: 0x4160ChunkLength: 54ChunkID: 0x4165ChunkLength: 7ChunkID: 0x4120ChunkLength: 7038ChunkID: 0x4130ChunkLength: 1024ChunkID: 0x4150ChunkLength: 2006

 float ConvertEndianf(float infloat) {	union floatunion { unsigned char part[4]; float float_value; } Converter;	char swap_char;		Converter.float_value = infloat;	swap_char = Converter.part[0]; Converter.part[0] = Converter.part[3]; Converter.part[3] = swap_char;	swap_char = Converter.part[1]; Converter.part[1] = Converter.part[2]; Converter.part[2] = swap_char;		return Converter.float_value; }  unsigned long ConvertEndianul(unsigned long inlong) { 	union longunion { unsigned char part[4]; unsigned long long_value; } Converter;	char swap_char;		Converter.long_value = inlong;	swap_char = Converter.part[0]; Converter.part[0] = Converter.part[3]; Converter.part[3] = swap_char;	swap_char = Converter.part[1]; Converter.part[1] = Converter.part[2]; Converter.part[2] = swap_char;		return Converter.long_value; }  unsigned short ConvertEndianus(unsigned short inshort) {	union shortunion { unsigned char part[2]; unsigned short short_value; } Converter;	char swap_char;		Converter.short_value = inshort;	swap_char = Converter.part[0]; Converter.part[0] = Converter.part[1]; Converter.part[1] = swap_char;		return Converter.short_value; }