/*
OUR FIRST VIDEO GAME

This is our first attempt at creating a video game using OpenGL and C++.
The team members are, from youngest to oldest:
- Toni, Ugo, Vanja.

The project started on Saturday, July 30, 2016, after a straight week of learning OpenGL without stopping.
After a short discussion in a local cafe, we decided what the main concepts of the game would be, and what
problems we'll be looking to solve while developing the game. The game is basically a prototype for our
upcoming gargantuan project, (codename: Sektor Exitium) so it leaves much to be desired for, which is fine.

The basic premise is that you're a jailbird on a prison colony planet, with the goal of fleeing from the
facility. This way, we get to experiment with various game mechanics, while avoiding the more complicated
issues such as AI, procedural generation of open worlds, complex combat and crafting systems, etc...

Here's to a successful first project!
*/

#include <iostream>		// STD includes
#include <cstdlib>
#include <math.h>
#include <string>
#include <conio.h>

#define GLEW_STATIC

#include <GL/glew.h>	// GLEW includes

#include <GLFW/glfw3.h>	// GLFW includes

#include "Shader.h"		// GL includes
#include "Resource_manager.h"
#include "Texture.h"

#include <glm/glm.hpp>	// GLM Mathematics
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>

#include <SOIL.h>		// Other Libs

using namespace std;
using namespace glm;

// Window properties
GLuint screenWidth = 1200, screenHeight = 675;

// Function prototypes
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
void mouse_callback(GLFWwindow* window, double xpos, double ypos);

int nextTile, previousTile;
int h = 20, w = 36, a, b;
int x = 2, y = 2;
int Matrix[20][36] =
{
	{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
	{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
};

int main() {

	system("COLOR 0B");

	Matrix[x][y] = 5;
	previousTile = 0;

	for (a = 0; a < h; a++) {
		cout << endl;
		for (b = 0; b < w; b++) {
			cout << Matrix[a][b] << ' ';
		}
	}

	// Sets up everything window related using GLFW
	glfwInit();
	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
	glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
	glfwWindowHint(GLFW_SAMPLES, 4);

	GLFWwindow* window = glfwCreateWindow(screenWidth, screenHeight, "Sektor Exitium: Escape", nullptr, nullptr);
	glfwMakeContextCurrent(window);								 // Start the application windowed

	glfwSetKeyCallback(window, key_callback);					 // Set the required callback functions
	glfwSetCursorPosCallback(window, mouse_callback);


	glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL); // Cursor options


	glewExperimental = GL_TRUE;									 // Initialize GLEW to setup the OpenGL Function pointers
	glewInit();

	glViewport(0, 0, screenWidth, screenHeight);				 // Define the viewport dimensions

	Shader ourShader = ResourceManager::LoadShader("shader.vs", "shader.frag", nullptr, "test");

														// GAME LOOP STARTS HERE
	while (!glfwWindowShouldClose(window))
	{

		glfwPollEvents();

		glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

		ourShader.Use();

		glfwSwapBuffers(window);
	}
	// GAME LOOP ENDS HERE

	ResourceManager::Clear();

}

// Function for keyboard input

void key_callback(GLFWwindow * window, int key, int scancode, int action, int mode)
{
	if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
		glfwSetWindowShouldClose(window, GL_TRUE);
	if (key == GLFW_KEY_UP && action == GLFW_PRESS) {
		if (Matrix[y - 1][x] == 1) {
			cout << "You hit a wall!";
		}
		else {
			Matrix[y][x] = 0;
			Matrix[y - 1][x] = 5;
			y = y - 1;
			for (a = 0; a < h; a++) {
				cout << endl;
				for (b = 0; b < w; b++) {
					cout << Matrix[a][b] << ' ';
				}
			}
		}
	}
	if (key == GLFW_KEY_DOWN && action == GLFW_PRESS) {

		if (Matrix[y + 1][x] == 1) {
			cout << "You hit a wall!";
		}
		else {
			Matrix[y][x] = 0;
			Matrix[y + 1][x] = 5;
			y = y + 1;
			for (a = 0; a < h; a++) {
				cout << endl;
				for (b = 0; b < w; b++) {
					cout << Matrix[a][b] << ' ';
				}
			}
		}
	}
	if (key == GLFW_KEY_LEFT && action == GLFW_PRESS) {
		if (Matrix[y][x - 1] == 1) {
			cout << "You hit a wall!";
		}
		else {
			Matrix[y][x] = 0;
			Matrix[y][x - 1] = 5;
			x = x - 1;
			for (a = 0; a < h; a++) {
				cout << endl;
				for (b = 0; b < w; b++) {
					cout << Matrix[a][b] << ' ';
				}
			}
		}
	}
	if (key == GLFW_KEY_RIGHT && action == GLFW_PRESS) {
		if (Matrix[y][x + 1] == 1) {
			cout << "You hit a wall!";
		}
		else {
			Matrix[y][x] = 0;
			Matrix[y][x + 1] = 5;
			x = x + 1;
			for (a = 0; a < h; a++) {
				cout << endl;
				for (b = 0; b < w; b++) {
					cout << Matrix[a][b] << ' ';
				}
			}
		}
	}
}

// Function for mouse input
void mouse_callback(GLFWwindow * window, double xpos, double ypos)
{

}