Added ui labels for debugging and playability

.vscode/launch.json

@@ -0,0 +1,26 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            // Use IntelliSense to find out which attributes exist for C# debugging
+            // Use hover for the description of the existing attributes
+            // For further information visit https://github.com/dotnet/vscode-csharp/blob/main/debugger-launchjson.md
+            "name": ".NET Core Launch (console)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/bin/Debug/net8.0/Voxel.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            // For more information about the 'console' field, see https://aka.ms/VSCode-CS-LaunchJson-Console
+            "console": "internalConsole",
+            "stopAtEntry": false
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach"
+        }
+    ]
+}

.vscode/tasks.json

@@ -0,0 +1,41 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/Voxel.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary;ForceNoAlign"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "publish",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "publish",
+                "${workspaceFolder}/Voxel.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary;ForceNoAlign"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "watch",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "watch",
+                "run",
+                "--project",
+                "${workspaceFolder}/Voxel.csproj"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

Core/Window.cs

@@ -1,9 +1,10 @@
 using OpenTK.Graphics.OpenGL4;
+using OpenTK.Mathematics;
 using OpenTK.Windowing.Common;
-using OpenTK.Windowing.Common.Input;
 using OpenTK.Windowing.Desktop;
 using OpenTK.Windowing.GraphicsLibraryFramework;
 using Voxel.Graphics;
+using Voxel.UI;
 
 namespace Voxel.Core
 {
@@ -17,6 +18,8 @@ namespace Voxel.Core
         public event Action<float, float> Update;
         public event Action Tick;
 
+        private Label _fpsLabel = new Label("FPS: N/A", 16, 16, 24, Vector4.One);
+
         private double _tickTime;
         public const double TICK_LENGTH = 1.0 / 20.0; // 20 TPS
 
@@ -56,15 +59,19 @@ namespace Voxel.Core
             timeElapsed += e.Time;
             float alpha = (float)(_tickTime / Window.TICK_LENGTH);
             float deltaTime = (float)e.Time;
+
             if (timeElapsed >= 1)
             {
                 Console.WriteLine("FPS: " + frames.ToString());
+                _fpsLabel.Text = $"FPS: {frames}";
                 timeElapsed = 0;
                 frames = 0;
             }
 
             Update.Invoke(deltaTime, alpha);
             
+            Renderer.RenderLabel(_fpsLabel);
+
             Renderer.Render();
 
             SwapBuffers();

Entities/Entity.cs

@@ -1,10 +1,4 @@
 using OpenTK.Mathematics;
-using System;
-using System.Collections.Generic;
-using System.Drawing;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using Voxel.Core;
 using Voxel.Physics;
 

Entities/Player.cs

@@ -1,8 +1,10 @@
-using OpenTK.Mathematics;
+using System.Net.Sockets;
+using OpenTK.Mathematics;
 using OpenTK.Windowing.Common;
 using OpenTK.Windowing.GraphicsLibraryFramework;
 using Voxel.Core;
 using Voxel.Graphics;
+using Voxel.UI;
 
 namespace Voxel.Entities
 {
@@ -15,11 +17,14 @@ namespace Voxel.Entities
         private int _jumpTicks = 0;
 
         private Blocks _selectedBlock = Blocks.OakPlanks;
-        private Vector3 previousPosition;
+        private Vector3 _previousPosition;
+        private Label _positionLabel = new Label("Position:", 16, 48, 24, Vector4.One);
+        private Label _blockLabel = new Label("Selected Block:", 16, 80, 24, Vector4.One);
 
         public Player(Vector3 startPos, World world) : base(startPos, 0.5f, 1.8f, world)
         {
             Input.OnMouseWheel += SwitchBlock;
+            _blockLabel.Text = $"Selected block: {_selectedBlock}";
         }
 
         public void PlaceBlock()
@@ -48,7 +53,7 @@ namespace Voxel.Entities
 
             _world.UpdateChunkLoading(Position);
 
-            previousPosition = Position;
+            _previousPosition = Position;
 
             float forwards = 0;
             float sidewards = 0;
@@ -94,6 +99,8 @@ namespace Voxel.Entities
                 }
             }
             else _jumpTicks = 0;
+
+            _positionLabel.Text = $"Position: {Position.X:F2}, {Position.Y:F2}, {Position.Z:F2}";
         }
 
         public void Jump()
@@ -104,9 +111,12 @@ namespace Voxel.Entities
 
         public void Update(float deltaTime, float alpha)
         {
-            Camera.Position = Vector3.Lerp(previousPosition, Position, alpha) + Vector3.UnitY * 1.62f;
+            Camera.Position = Vector3.Lerp(_previousPosition, Position, alpha) + Vector3.UnitY * 1.62f;
             Rotation = Camera.Yaw;
 
+            Renderer.RenderLabel(_positionLabel);
+            Renderer.RenderLabel(_blockLabel);
+
             if (lastClick > 0)
             {
                 lastClick -= deltaTime;
@@ -159,7 +169,7 @@ namespace Voxel.Entities
 
             _blockIndex = (_blockIndex + direction + count) % count;
             _selectedBlock = BlockDefinitions.CreativeInventory[_blockIndex];
-
+            _blockLabel.Text = $"Selected block: {_selectedBlock}";
             Console.WriteLine(_selectedBlock);
         }
     }

Graphics/Camera.cs

@@ -14,8 +14,8 @@ namespace Voxel.Graphics
         public static float Speed = 5f;
         public static float ShiftSpeed = 20f;
 
-        private static int _width;
-        private static int _height;
+        public static int Width;
+        public static int Height;
 
         public static Matrix4 view =>
             Matrix4.LookAt(Position, Position + Front, Vector3.UnitY);
@@ -47,7 +47,7 @@ namespace Voxel.Graphics
         public static void UpdateProjection()
         {
             float fov = MathHelper.DegreesToRadians(FOV);
-            float aspectRatio = _width / (float)_height;
+            float aspectRatio = Width / (float)Height;
             float near = 0.1f;
             float far = 1000f;
 
@@ -56,8 +56,8 @@ namespace Voxel.Graphics
 
         public static void UpdateSize(int width, int height)
         {
-            _width = width;
-            _height = height;
+            Width = width;
+            Height = height;
             UpdateProjection();
         }
 

Graphics/Renderer.cs

@@ -1,7 +1,7 @@
 using OpenTK.Graphics.OpenGL4;
 using OpenTK.Mathematics;
 using Voxel.Core;
-using static System.Runtime.InteropServices.JavaScript.JSType;
+using Voxel.UI;
 
 namespace Voxel.Graphics
 {
@@ -13,17 +13,25 @@ namespace Voxel.Graphics
 
         private static Dictionary<(int, int), int> _chunkBufferSizes = new Dictionary<(int, int), int>();
         private static Shader _shader;
+        private static Shader _uiShader;
+        private static GuiBatcher _guiBatcher;
         private static readonly Texture _texture;
+        private static readonly Texture _uiTexture;
         private static World? _world;
 
+        public static int WindowHeight = 1080;
+        public static int WindowWidth = 1920;
+
         static Renderer()
         {
             string vertexPath = "Shaders/shader.vert";
             string fragmentPath = "Shaders/shader.frag";
             string texturePath = "Assets/atlas.png"; 
+            string uiTexturePath = "Assets/ascii.png"; 
 
             _shader = new Shader(vertexPath, fragmentPath);
             _texture = new Texture(texturePath);
+            _uiTexture = new Texture(uiTexturePath);
 
             _shader.SetInt("uTexture", 0);
 
@@ -35,6 +43,10 @@ namespace Voxel.Graphics
 
             GL.BufferData(BufferTarget.ShaderStorageBuffer, 1024 * 1024 * 128, IntPtr.Zero, BufferUsageHint.DynamicDraw);
             GL.BindBufferBase(BufferRangeTarget.ShaderStorageBuffer, 0, _ssbo);
+
+            _guiBatcher = new GuiBatcher();
+            _uiShader = new Shader("Shaders/ui.vert", "Shaders/ui.frag");
+            _uiShader.SetInt("uTexture", 1);
         }
 
         public static void Render()
@@ -46,6 +58,7 @@ namespace Voxel.Graphics
             _shader.SetMatrix4("view", Camera.view);
             _shader.SetVector3("cameraPosition", Camera.Position);
             _shader.SetMatrix4("projection", Camera.projection);
+            _texture.Bind(TextureUnit.Texture0);
 
             if (_buffersDirty)
             {
@@ -112,7 +125,24 @@ namespace Voxel.Graphics
 
         private static void RenderUi()
         {
+            GL.Disable(EnableCap.CullFace);
+            GL.Disable(EnableCap.DepthTest);
+            GL.Enable(EnableCap.Blend);
+            GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
             
+            _uiShader.Use();
+
+            Matrix4 projection = Matrix4.CreateOrthographicOffCenter(0, Camera.Width, Camera.Height, 0, -1, 1);
+            _uiShader.SetMatrix4("projection", projection);
+
+            _uiTexture.Bind(TextureUnit.Texture0);
+            _guiBatcher.DrawString("Voxel Engine v0.1", 16, 112, 24, Vector4.One);
+
+            _guiBatcher.Render();
+
+            GL.Disable(EnableCap.Blend);
+            GL.Enable(EnableCap.DepthTest);
+            GL.Enable(EnableCap.CullFace);
         }
 
         private static void RenderWorld()
@@ -145,5 +175,11 @@ namespace Voxel.Graphics
         {
             _buffersDirty = true;
         }
+
+        //temp
+        public static void RenderLabel(Label label)
+        {
+            _guiBatcher.DrawString(label.Text, label.X, label.Y, label.Size, label.Color);
+        }
     }
 }

Shaders/ui.frag

@@ -0,0 +1,16 @@
+#version 440 core
+
+in vec2 TexCoord;
+in vec4 Color;
+
+out vec4 FragColor;
+
+uniform sampler2D uTexture; // Ensure this name matches C# exactly
+
+void main() 
+{
+    vec4 texColor = texture(uTexture, TexCoord);
+    
+    // If you don't use texColor, uTexture gets deleted by the compiler
+    FragColor = texColor * Color;
+}

Shaders/ui.vert

@@ -0,0 +1,18 @@
+#version 440 core
+
+layout (location = 0) in vec2 aPos;
+layout (location = 1) in vec2 aTexCoord;
+layout (location = 2) in vec4 aColor;
+
+out vec2 TexCoord;
+out vec4 Color;
+
+uniform mat4 projection; // Ensure this name matches C# exactly
+
+void main() 
+{
+    // If you don't multiply by projection, the compiler deletes the uniform
+    gl_Position = projection * vec4(aPos, 0.0, 1.0);
+    TexCoord = aTexCoord;
+    Color = aColor;
+}

UI/CharData.cs

@@ -0,0 +1,47 @@
+public static class CharWidth
+{
+    private static readonly Dictionary<char, float> CharWidths = new Dictionary<char, float>();
+    
+    static CharWidth()
+    {
+        // Default for all ASCII
+        for (char c = (char)32; c <= (char)126; c++)
+            CharWidths[c] = 5.0f;
+        
+        // Override exceptions
+        CharWidths[' '] = 3.0f;
+        CharWidths['!'] = 1.0f;
+        CharWidths['"'] = 3.0f;
+        CharWidths['\''] = 1.0f;
+        CharWidths['('] = 3.0f;
+        CharWidths[')'] = 3.0f;
+        CharWidths['*'] = 3.0f;
+        CharWidths[','] = 1.0f;
+        CharWidths['.'] = 1.0f;
+        CharWidths[':'] = 1.0f;
+        CharWidths[';'] = 1.0f;
+        CharWidths['<'] = 4.0f;
+        CharWidths['>'] = 4.0f;
+        CharWidths['@'] = 6.0f;
+        CharWidths['I'] = 3.0f;
+        CharWidths['['] = 3.0f;
+        CharWidths[']'] = 3.0f;
+        CharWidths['`'] = 2.0f;
+        CharWidths['f'] = 4.0f;
+        CharWidths['i'] = 1.0f;
+        CharWidths['k'] = 4.0f;
+        CharWidths['l'] = 2.0f;
+        CharWidths['t'] = 3.0f;
+        CharWidths['{'] = 3.0f;
+        CharWidths['|'] = 1.0f;
+        CharWidths['}'] = 3.0f;
+        CharWidths['~'] = 6.0f;
+    }
+    
+    public static float GetWidth(char c)
+    {
+        if (CharWidths.TryGetValue(c, out float width))
+            return width;
+        return 5.0f;
+    }
+}

UI/GuiBatcher.cs

@@ -0,0 +1,86 @@
+using OpenTK.Graphics.OpenGL4;
+using OpenTK.Mathematics;
+
+public class GuiBatcher
+{
+    private List<UiVertex> _vertices = new List<UiVertex>();
+    private int _vbo;
+    private int _vao;
+
+    public GuiBatcher()
+    {
+        _vao = GL.GenVertexArray();
+        _vbo = GL.GenBuffer();
+
+        GL.BindVertexArray(_vao);
+        GL.BindBuffer(BufferTarget.ArrayBuffer, _vbo);
+
+        // Position (2 floats)
+        GL.EnableVertexAttribArray(0);
+        GL.VertexAttribPointer(0, 2, VertexAttribPointerType.Float, false, 8 * sizeof(float), 0);
+        // TexCoord (2 floats)
+        GL.EnableVertexAttribArray(1);
+        GL.VertexAttribPointer(1, 2, VertexAttribPointerType.Float, false, 8 * sizeof(float), 2 * sizeof(float));
+        // Color (4 floats)
+        GL.EnableVertexAttribArray(2);
+        GL.VertexAttribPointer(2, 4, VertexAttribPointerType.Float, false, 8 * sizeof(float), 4 * sizeof(float));
+    }
+
+    public void DrawQuad(float x, float y, float w, float h, Vector4 uv, Vector4 color)
+    {
+        // Two triangles (Standard Minecraft Blit)
+        _vertices.Add(new UiVertex(x, y, uv.X, uv.Y, color));         // TL
+        _vertices.Add(new UiVertex(x + w, y, uv.Z, uv.Y, color));     // TR
+        _vertices.Add(new UiVertex(x, y + h, uv.X, uv.W, color));     // BL
+
+        _vertices.Add(new UiVertex(x + w, y, uv.Z, uv.Y, color));     // TR
+        _vertices.Add(new UiVertex(x + w, y + h, uv.Z, uv.W, color)); // BR
+        _vertices.Add(new UiVertex(x, y + h, uv.X, uv.W, color));     // BL
+    }
+
+    public void Render()
+    {
+        if (_vertices.Count == 0) return;
+
+        GL.BindVertexArray(_vao);
+        GL.BindBuffer(BufferTarget.ArrayBuffer, _vbo);
+
+        var data = _vertices.ToArray();
+        GL.BufferData(BufferTarget.ArrayBuffer, data.Length * 8 * sizeof(float), data, BufferUsageHint.StreamDraw);
+
+        GL.DrawArrays(PrimitiveType.Triangles, 0, _vertices.Count);
+        _vertices.Clear(); // Reset for next frame
+    }
+
+    public void DrawString(string text, float x, float y, float size, Vector4 color)
+    {
+        float charStep = 1.0f / 16.0f;
+        float currentX = x;
+
+        foreach (char c in text)
+        {
+            int ascii = (int)c;
+            int row = ascii / 16;
+            int col = ascii % 16;
+
+            float uStart = col * charStep;
+            float uEnd = uStart + charStep;
+
+            float vStart = 1.0f - (row * charStep);
+            float vEnd = vStart - charStep;
+
+            Vector4 uv = new Vector4(
+                uStart,          // U start
+                vStart,          // V start
+                uEnd,    // U end
+                vEnd     // V end
+            );
+
+            DrawQuad(currentX, y, size, size, uv, color);
+
+            float charWidthPixels = (CharWidth.GetWidth(c) + 1) / 8;
+            float charWidthWorldUnits = size * charWidthPixels;
+            currentX += charWidthWorldUnits;
+        }
+    }
+}

UI/Label.cs

@@ -0,0 +1,21 @@
+using OpenTK.Mathematics;
+
+namespace Voxel.UI {
+    public class Label
+    {
+        public string Text;
+        public float X;
+        public float Y;
+        public float Size;
+        public Vector4 Color;
+
+        public Label(string text, float x, float y, float size, Vector4 color)
+        {
+            Text = text;
+            X = x;
+            Y = y;
+            Size = size;
+            Color = color;
+        }
+    }
+}

UI/UIElement.cs

@@ -1,7 +0,0 @@
-using OpenTK.Mathematics;
-using System.Drawing;
-
-public class UIElement
-{
-
-}

UI/UiVertex.cs

@@ -0,0 +1,15 @@
+using OpenTK.Mathematics;
+
+struct UiVertex
+{
+    public Vector2 Position;
+    public Vector2 TexCoord;
+    public Vector4 Color;
+
+    public UiVertex(float x, float y, float u, float v, Vector4 color)
+    {
+        Position = new Vector2(x, y);
+        TexCoord = new Vector2(u, v);
+        Color = color;
+    }
+}

World/World.cs

@@ -1,6 +1,7 @@
 using OpenTK.Mathematics;
 using Voxel.Graphics;
 using Voxel.Physics;
+using Voxel.UI;
 
 namespace Voxel.Core
 {

Worldgen/Worldgen.cs

@@ -1,9 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using Voxel.Core;
+using Voxel.Core;
 
 namespace Voxel
 {