some OpenGL boilerplate

src/ThirdParty/fastnoise.hpp

@@ -0,0 +1,311 @@
+// FastNoise.h
+//
+// MIT License
+//
+// Copyright(c) 2017 Jordan Peck
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// The developer's email is jorzixdan.me2@gzixmail.com (for great email, take
+// off every 'zix'.)
+//
+
+// VERSION: 0.4.1
+
+#ifndef FASTNOISE_H
+#define FASTNOISE_H
+
+// Uncomment the line below to use doubles throughout FastNoise instead of floats
+//#define FN_USE_DOUBLES
+
+#define FN_CELLULAR_INDEX_MAX 3
+
+#ifdef FN_USE_DOUBLES
+typedef double FN_DECIMAL;
+#else
+typedef float FN_DECIMAL;
+#endif
+
+class FastNoise
+{
+public:
+	explicit FastNoise(int seed = 1337) { SetSeed(seed); CalculateFractalBounding(); }
+
+	enum NoiseType { Value, ValueFractal, Perlin, PerlinFractal, Simplex, SimplexFractal, Cellular, WhiteNoise, Cubic, CubicFractal };
+	enum Interp { Linear, Hermite, Quintic };
+	enum FractalType { FBM, Billow, RigidMulti };
+	enum CellularDistanceFunction { Euclidean, Manhattan, Natural };
+	enum CellularReturnType { CellValue, NoiseLookup, Distance, Distance2, Distance2Add, Distance2Sub, Distance2Mul, Distance2Div };
+
+	// Sets seed used for all noise types
+	// Default: 1337
+	void SetSeed(int seed);
+
+	// Returns seed used for all noise types
+	int GetSeed() const { return m_seed; }
+
+	// Sets frequency for all noise types
+	// Default: 0.01
+	void SetFrequency(FN_DECIMAL frequency) { m_frequency = frequency; }
+
+	// Returns frequency used for all noise types
+	FN_DECIMAL GetFrequency() const { return m_frequency; }
+
+	// Changes the interpolation method used to smooth between noise values
+	// Possible interpolation methods (lowest to highest quality) :
+	// - Linear
+	// - Hermite
+	// - Quintic
+	// Used in Value, Perlin Noise and Position Warping
+	// Default: Quintic
+	void SetInterp(Interp interp) { m_interp = interp; }
+
+	// Returns interpolation method used for supported noise types
+	Interp GetInterp() const { return m_interp; }
+
+	// Sets noise return type of GetNoise(...)
+	// Default: Simplex
+	void SetNoiseType(NoiseType noiseType) { m_noiseType = noiseType; }
+
+	// Returns the noise type used by GetNoise
+	NoiseType GetNoiseType() const { return m_noiseType; }
+
+	// Sets octave count for all fractal noise types
+	// Default: 3
+	void SetFractalOctaves(int octaves) { m_octaves = octaves; CalculateFractalBounding(); }
+
+	// Returns octave count for all fractal noise types
+	int GetFractalOctaves() const { return m_octaves; }
+	
+	// Sets octave lacunarity for all fractal noise types
+	// Default: 2.0
+	void SetFractalLacunarity(FN_DECIMAL lacunarity) { m_lacunarity = lacunarity; }
+
+	// Returns octave lacunarity for all fractal noise types
+	FN_DECIMAL GetFractalLacunarity() const { return m_lacunarity; }
+
+	// Sets octave gain for all fractal noise types
+	// Default: 0.5
+	void SetFractalGain(FN_DECIMAL gain) { m_gain = gain; CalculateFractalBounding(); }
+
+	// Returns octave gain for all fractal noise types
+	FN_DECIMAL GetFractalGain() const { return m_gain; }
+
+	// Sets method for combining octaves in all fractal noise types
+	// Default: FBM
+	void SetFractalType(FractalType fractalType) { m_fractalType = fractalType; }
+
+	// Returns method for combining octaves in all fractal noise types
+	FractalType GetFractalType() const { return m_fractalType; }
+
+
+	// Sets distance function used in cellular noise calculations
+	// Default: Euclidean
+	void SetCellularDistanceFunction(CellularDistanceFunction cellularDistanceFunction) { m_cellularDistanceFunction = cellularDistanceFunction; }
+
+	// Returns the distance function used in cellular noise calculations
+	CellularDistanceFunction GetCellularDistanceFunction() const { return m_cellularDistanceFunction; }
+
+	// Sets return type from cellular noise calculations
+	// Note: NoiseLookup requires another FastNoise object be set with SetCellularNoiseLookup() to function
+	// Default: CellValue
+	void SetCellularReturnType(CellularReturnType cellularReturnType) { m_cellularReturnType = cellularReturnType; }
+
+	// Returns the return type from cellular noise calculations
+	CellularReturnType GetCellularReturnType() const { return m_cellularReturnType; }
+
+	// Noise used to calculate a cell value if cellular return type is NoiseLookup
+	// The lookup value is acquired through GetNoise() so ensure you SetNoiseType() on the noise lookup, value, Perlin or simplex is recommended
+	void SetCellularNoiseLookup(FastNoise* noise) { m_cellularNoiseLookup = noise; }
+
+	// Returns the noise used to calculate a cell value if the cellular return type is NoiseLookup
+	FastNoise* GetCellularNoiseLookup() const { return m_cellularNoiseLookup; }
+
+	// Sets the 2 distance indices used for distance2 return types
+	// Default: 0, 1
+	// Note: index0 should be lower than index1
+	// Both indices must be >= 0, index1 must be < 4
+	void SetCellularDistance2Indices(int cellularDistanceIndex0, int cellularDistanceIndex1);
+
+	// Returns the 2 distance indices used for distance2 return types
+	void GetCellularDistance2Indices(int& cellularDistanceIndex0, int& cellularDistanceIndex1) const;
+
+	// Sets the maximum distance a cellular point can move from its grid position
+	// Setting this high will make artifacts more common
+	// Default: 0.45
+	void SetCellularJitter(FN_DECIMAL cellularJitter) { m_cellularJitter = cellularJitter; }
+
+	// Returns the maximum distance a cellular point can move from its grid position
+	FN_DECIMAL GetCellularJitter() const { return m_cellularJitter; }
+
+	// Sets the maximum warp distance from original location when using GradientPerturb{Fractal}(...)
+	// Default: 1.0
+	void SetGradientPerturbAmp(FN_DECIMAL gradientPerturbAmp) { m_gradientPerturbAmp = gradientPerturbAmp; }
+
+	// Returns the maximum warp distance from original location when using GradientPerturb{Fractal}(...)
+	FN_DECIMAL GetGradientPerturbAmp() const { return m_gradientPerturbAmp; }
+
+	//2D
+	FN_DECIMAL GetValue(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL GetValueFractal(FN_DECIMAL x, FN_DECIMAL y) const;
+
+	FN_DECIMAL GetPerlin(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL GetPerlinFractal(FN_DECIMAL x, FN_DECIMAL y) const;
+
+	FN_DECIMAL GetSimplex(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL GetSimplexFractal(FN_DECIMAL x, FN_DECIMAL y) const;
+
+	FN_DECIMAL GetCellular(FN_DECIMAL x, FN_DECIMAL y) const;
+
+	FN_DECIMAL GetWhiteNoise(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL GetWhiteNoiseInt(int x, int y) const;
+
+	FN_DECIMAL GetCubic(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL GetCubicFractal(FN_DECIMAL x, FN_DECIMAL y) const;
+
+	FN_DECIMAL GetNoise(FN_DECIMAL x, FN_DECIMAL y) const;
+
+	void GradientPerturb(FN_DECIMAL& x, FN_DECIMAL& y) const;
+	void GradientPerturbFractal(FN_DECIMAL& x, FN_DECIMAL& y) const;
+
+	//3D
+	FN_DECIMAL GetValue(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL GetValueFractal(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	FN_DECIMAL GetPerlin(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL GetPerlinFractal(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	FN_DECIMAL GetSimplex(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL GetSimplexFractal(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	FN_DECIMAL GetCellular(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	FN_DECIMAL GetWhiteNoise(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL GetWhiteNoiseInt(int x, int y, int z) const;
+
+	FN_DECIMAL GetCubic(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL GetCubicFractal(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	FN_DECIMAL GetNoise(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	void GradientPerturb(FN_DECIMAL& x, FN_DECIMAL& y, FN_DECIMAL& z) const;
+	void GradientPerturbFractal(FN_DECIMAL& x, FN_DECIMAL& y, FN_DECIMAL& z) const;
+
+	//4D
+	FN_DECIMAL GetSimplex(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z, FN_DECIMAL w) const;
+
+	FN_DECIMAL GetWhiteNoise(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z, FN_DECIMAL w) const;
+	FN_DECIMAL GetWhiteNoiseInt(int x, int y, int z, int w) const;
+
+private:
+	unsigned char m_perm[512];
+	unsigned char m_perm12[512];
+
+	int m_seed = 1337;
+	FN_DECIMAL m_frequency = FN_DECIMAL(0.01);
+	Interp m_interp = Quintic;
+	NoiseType m_noiseType = Simplex;
+
+	int m_octaves = 3;
+	FN_DECIMAL m_lacunarity = FN_DECIMAL(2);
+	FN_DECIMAL m_gain = FN_DECIMAL(0.5);
+	FractalType m_fractalType = FBM;
+	FN_DECIMAL m_fractalBounding;
+
+	CellularDistanceFunction m_cellularDistanceFunction = Euclidean;
+	CellularReturnType m_cellularReturnType = CellValue;
+	FastNoise* m_cellularNoiseLookup = nullptr;
+	int m_cellularDistanceIndex0 = 0;
+	int m_cellularDistanceIndex1 = 1;
+	FN_DECIMAL m_cellularJitter = FN_DECIMAL(0.45);
+
+	FN_DECIMAL m_gradientPerturbAmp = FN_DECIMAL(1);
+
+	void CalculateFractalBounding();
+
+	//2D
+	FN_DECIMAL SingleValueFractalFBM(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleValueFractalBillow(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleValueFractalRigidMulti(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleValue(unsigned char offset, FN_DECIMAL x, FN_DECIMAL y) const;
+
+	FN_DECIMAL SinglePerlinFractalFBM(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SinglePerlinFractalBillow(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SinglePerlinFractalRigidMulti(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SinglePerlin(unsigned char offset, FN_DECIMAL x, FN_DECIMAL y) const;
+
+	FN_DECIMAL SingleSimplexFractalFBM(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleSimplexFractalBillow(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleSimplexFractalRigidMulti(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleSimplexFractalBlend(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleSimplex(unsigned char offset, FN_DECIMAL x, FN_DECIMAL y) const;
+
+	FN_DECIMAL SingleCubicFractalFBM(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleCubicFractalBillow(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleCubicFractalRigidMulti(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleCubic(unsigned char offset, FN_DECIMAL x, FN_DECIMAL y) const;
+
+	FN_DECIMAL SingleCellular(FN_DECIMAL x, FN_DECIMAL y) const;
+	FN_DECIMAL SingleCellular2Edge(FN_DECIMAL x, FN_DECIMAL y) const;
+
+	void SingleGradientPerturb(unsigned char offset, FN_DECIMAL warpAmp, FN_DECIMAL frequency, FN_DECIMAL& x, FN_DECIMAL& y) const;
+
+	//3D
+	FN_DECIMAL SingleValueFractalFBM(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SingleValueFractalBillow(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SingleValueFractalRigidMulti(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SingleValue(unsigned char offset, FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	FN_DECIMAL SinglePerlinFractalFBM(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SinglePerlinFractalBillow(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SinglePerlinFractalRigidMulti(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SinglePerlin(unsigned char offset, FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	FN_DECIMAL SingleSimplexFractalFBM(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SingleSimplexFractalBillow(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SingleSimplexFractalRigidMulti(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SingleSimplex(unsigned char offset, FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	FN_DECIMAL SingleCubicFractalFBM(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SingleCubicFractalBillow(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SingleCubicFractalRigidMulti(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SingleCubic(unsigned char offset, FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	FN_DECIMAL SingleCellular(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+	FN_DECIMAL SingleCellular2Edge(FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z) const;
+
+	void SingleGradientPerturb(unsigned char offset, FN_DECIMAL warpAmp, FN_DECIMAL frequency, FN_DECIMAL& x, FN_DECIMAL& y, FN_DECIMAL& z) const;
+
+	//4D
+	FN_DECIMAL SingleSimplex(unsigned char offset, FN_DECIMAL x, FN_DECIMAL y, FN_DECIMAL z, FN_DECIMAL w) const;
+
+	inline unsigned char Index2D_12(unsigned char offset, int x, int y) const;
+	inline unsigned char Index3D_12(unsigned char offset, int x, int y, int z) const;
+	inline unsigned char Index4D_32(unsigned char offset, int x, int y, int z, int w) const;
+	inline unsigned char Index2D_256(unsigned char offset, int x, int y) const;
+	inline unsigned char Index3D_256(unsigned char offset, int x, int y, int z) const;
+	inline unsigned char Index4D_256(unsigned char offset, int x, int y, int z, int w) const;
+
+	inline FN_DECIMAL ValCoord2DFast(unsigned char offset, int x, int y) const;
+	inline FN_DECIMAL ValCoord3DFast(unsigned char offset, int x, int y, int z) const;
+	inline FN_DECIMAL GradCoord2D(unsigned char offset, int x, int y, FN_DECIMAL xd, FN_DECIMAL yd) const;
+	inline FN_DECIMAL GradCoord3D(unsigned char offset, int x, int y, int z, FN_DECIMAL xd, FN_DECIMAL yd, FN_DECIMAL zd) const;
+	inline FN_DECIMAL GradCoord4D(unsigned char offset, int x, int y, int z, int w, FN_DECIMAL xd, FN_DECIMAL yd, FN_DECIMAL zd, FN_DECIMAL wd) const;
+};
+#endif

src/display.cpp

@@ -0,0 +1,120 @@
+#include "display.hpp"
+
+Display::Display( int w, int h, std::string title )
+	: mLogger() 
+{
+	
+	mLogger << LOGGER_INFO << "Initializing display" << LOGGER_ENDL;
+	SDL_Init( SDL_INIT_VIDEO|SDL_INIT_AUDIO );
+
+	SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 8 );
+	SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 8 );
+	SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, 8 );
+	SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE, 8 );
+	SDL_GL_SetAttribute( SDL_GL_BUFFER_SIZE, 32 );
+	SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
+
+	SDL_GL_SetAttribute( SDL_GL_MULTISAMPLEBUFFERS, 1 );
+	SDL_GL_SetAttribute( SDL_GL_MULTISAMPLESAMPLES, 4 );
+
+	SDL_GL_SetAttribute( SDL_GL_CONTEXT_MAJOR_VERSION, 4 );
+	SDL_GL_SetAttribute( SDL_GL_CONTEXT_MINOR_VERSION, 5 );
+
+	// Create GL window
+	mLogger << LOGGER_INFO << "Creating window" << LOGGER_ENDL;
+	mWindow = SDL_CreateWindow( title.c_str(),
+		SDL_WINDOWPOS_CENTERED,
+		SDL_WINDOWPOS_CENTERED, w, h,
+		SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE );
+
+	// Create GL context
+	mLogger << LOGGER_INFO << "Creating OpenGL context" << LOGGER_ENDL;
+	mGlContext = SDL_GL_CreateContext( mWindow );
+
+	SDL_SetRelativeMouseMode( SDL_TRUE );
+
+	// Set VSYNC swap interval
+	SDL_GL_SetSwapInterval( 1 );
+
+	mLogger << LOGGER_INFO << "Display set up" << LOGGER_ENDL;
+
+	// Load OpenGL
+	gladLoadGLLoader( SDL_GL_GetProcAddress );
+	glEnable( GL_MULTISAMPLE );
+	// glEnable(GL_CULL_FACE);
+	glCullFace( GL_BACK );
+	glEnable( GL_DEPTH_TEST );
+	// glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+
+	mLogger << LOGGER_INFO << "Loaded OpenGL" << LOGGER_ENDL;
+	mLogger << LOGGER_ENDL;
+
+	IsWindowOpen = true;
+
+}
+
+void Display::Input( SDL_Event* e )
+{
+
+	Uint8* state = (Uint8*) SDL_GetKeyboardState( NULL );
+
+	while ( SDL_PollEvent( e ) )
+	{
+
+		switch ( e->type )
+		{
+
+		case SDL_KEYDOWN:
+		{
+			if ( e->key.keysym.sym == SDLK_ESCAPE )
+			{
+				IsMouseActive = !IsMouseActive;
+
+				if ( IsMouseActive )
+					SDL_SetRelativeMouseMode( SDL_TRUE );
+				else
+					SDL_SetRelativeMouseMode( SDL_FALSE );
+			}
+
+			break;
+		}
+
+		case SDL_WINDOWEVENT:
+		{
+			if ( e->window.event == SDL_WINDOWEVENT_RESIZED )
+			{
+				// CameraUpdateProjection( e->window.data1, e->window.data2 );
+				glViewport( 0, 0, e->window.data1, e->window.data2 );
+			}
+
+			break;
+		}
+
+		case SDL_QUIT:
+		{
+			IsWindowOpen = false;
+			break;
+		}
+
+		}
+
+		// if ( IsMouseActive ) m_player->HandleMouseSDL( *e );
+	}
+
+	// m_player->MoveSDL( state );
+
+}
+
+void Display::PrepareFrame()
+{
+	static const float clear[] = { 186.0f / 255.0f, 214.0f / 255.0f, 254.0f / 255.0f };
+
+	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+	glClearBufferfv( GL_COLOR, 0, clear );
+}
+
+void Display::NextFrame()
+{
+	SDL_GL_SwapWindow( mWindow );
+}
+

src/display.hpp

@@ -0,0 +1,42 @@
+#ifndef MINECRAFT_DISPLAY_H_
+#define MINECRAFT_DISPLAY_H_
+
+#include <string>
+
+#include <logger.h>
+
+#if _WIN32
+#include <SDL.h>
+#else
+#include <SDL2/SDL.h>
+#endif
+
+#include <glad/glad.h>
+#include <KHR/khrplatform.h>
+
+class Display
+{
+public:
+
+	Display( int w, int h, std::string title );
+
+	void Input( SDL_Event* e );
+
+	void PrepareFrame();
+	void NextFrame();
+
+	bool IsWindowOpen = false;
+	bool IsMouseActive = true;
+
+private:
+
+	Logger mLogger;
+
+	SDL_Window* mWindow = nullptr;
+	SDL_GLContext mGlContext = nullptr;
+
+	int mW, mH;
+
+};
+
+#endif

src/main.cpp

@@ -0,0 +1,78 @@
+#include <iostream>
+#include <sstream>
+
+#define LOGGER_DEFINITION
+#include <logger.h>
+
+#if _WIN32
+#include <SDL.h>
+#else
+#include <SDL2/SDL.h>
+#endif
+
+#include "display.hpp"
+#include "settings.hpp"
+
+
+#define __DEBUG
+
+static const int VERSION_MAJOR = 1;
+static const int VERSION_MINOR = 1;
+static const int VERSION_PATCH = 0;
+
+void version()
+{
+	std::stringstream version;
+
+	auto& container = []( std::string s ) { std::string r = ""; for ( auto& c : s ) { r += "-"; } return r; };
+
+	version << "Minecraft ";
+	version << VERSION_MAJOR << "." << VERSION_MINOR << "." << VERSION_PATCH;
+
+	std::cout << container( version.str() ) << std::endl;
+	std::cout << version.str() << std::endl;
+	std::cout << container( version.str() ) << std::endl;
+}
+
+void Loop( Display* display )
+{
+	SDL_Event e;
+
+	while ( display->IsWindowOpen )
+	{
+		display->PrepareFrame();
+
+		// make framerate agnostic
+		display->Input( &e );
+
+
+		// rendering here
+
+		display->NextFrame();
+	}
+
+	// cleanup
+
+}
+
+int main( int argc, char** argv )
+{
+	version();
+
+	Logger mLogger;
+	
+#ifdef __DEBUG
+	mLogger << LOGGER_DEBUG << "Debug mode enabled" << LOGGER_ENDL;
+#endif
+
+	// settup display
+
+	std::stringstream version;
+	version << "Minecraft ";
+	version << VERSION_MAJOR << "." << VERSION_MINOR << "." << VERSION_PATCH;
+
+	Display display { WindowWidth, WindowHeight, version.str() };
+
+	Loop( &display );
+
+}

src/settings.hpp

@@ -0,0 +1,10 @@
+#ifndef MINECRAFT_SETTINGS_H_
+#define MINECRAFT_SETTINGS_H_
+
+// TODO: import settings and stuff
+// for now this works
+
+static const int WindowWidth = 1000;
+static const int WindowHeight = 600;
+
+#endif