feat: camera following player

Components/Player/CameraComponent.cs

@@ -1,3 +1,4 @@
+using BakeryGame.Models;
 using Raylib_cs;
 using Scellecs.Morpeh;
 
@@ -5,5 +6,5 @@ namespace BakeryGame.Components.Player;
 
 public struct CameraComponent : IComponent
 {
-    public Camera3D Camera;
+    public CameraRef Camera;
 }

Entities/BlockFactory.cs

@@ -28,19 +28,7 @@ public class BlockFactory
         return block;
     }
 
-    public IEnumerable<Entity> GenerateMapOfBlocks()
-    {
-        for (int x = -16 / 2; x <= 16 / 2; x++) {
-            for (int z = -16 / 2; z <= 16 / 2; z++) {
-                if (x == -16 / 2 || x == 16 / 2 || z == -16 / 2 || z == 16 / 2)
-                {
-                    yield return CreateBlock(x, z);
-                }
-            }
-        }
     
 
-    }
-
     public const float BlockSize = 1;
 }

Entities/PlayerFactory.cs

@@ -1,6 +1,7 @@
 using System.Numerics;
 using BakeryGame.Components.Common;
 using BakeryGame.Components.Player;
+using BakeryGame.Models;
 using Raylib_cs;
 using Scellecs.Morpeh;
 
@@ -23,7 +24,7 @@ public  class PlayerFactory
         player.SetComponent(new MovementComponent() { Speed = 0.1f });
         camera = new CameraComponent()
         {
-            Camera = new Camera3D(new(0.0f, 10.0f, 10.0f), new(0.0f, 0.0f, 0.0f), new(0.0f, 1.0f, 0.0f), 45.0f, 0)
+            Camera = new CameraRef(new(0.0f, 20.0f, 10.0f), new(0.0f, 0.0f, 0.0f), new(0.0f, 1.0f, 0.0f), 60.0f)
         };
         player.SetComponent(camera);
         

Entities/RoomBuilder.cs

@@ -0,0 +1,20 @@
+using Scellecs.Morpeh;
+
+namespace BakeryGame.Entities;
+
+public class RoomBuilder
+{
+    public static int RoomSize = 16;
+    
+    public static IEnumerable<Entity> GenerateMapOfBlocks(BlockFactory blockFactory)
+    {
+        for (int x = -RoomSize / 2; x <= RoomSize / 2; x++) {
+            for (int z = -RoomSize / 2; z <= RoomSize / 2; z++) {
+                if (x == -RoomSize / 2 || x == RoomSize / 2 || z == -RoomSize / 2 || z == RoomSize / 2)
+                {
+                    yield return blockFactory.CreateBlock(x, z);
+                }
+            }
+        }
+    }
+}

Models/CameraRef.cs

@@ -0,0 +1,56 @@
+using System.Numerics;
+using Raylib_cs;
+
+namespace BakeryGame.Models;
+
+public class CameraRef
+{
+    private Camera3D _cam;
+
+    public CameraRef(Vector3 position, Vector3 target, Vector3 up, float fovy)
+    {
+        _cam = new Camera3D(position, target, up, fovy, 0);
+    }
+
+    /// <summary>
+    /// Camera position
+    /// </summary>
+    public void SetPosition(Vector3 position)
+    {
+        _cam.Position = position;
+    }
+
+    /// <summary>
+    /// Camera target it looks-at
+    /// </summary>
+    public void SetTarget(Vector3 target)
+    {
+        _cam.Target = target;
+    }
+
+    /// <summary>
+    /// Camera up vector (rotation over its axis)
+    /// </summary>
+    public void SetUp(Vector3 up)
+    {
+        _cam.Up = up;
+    }
+
+    /// <summary>
+    /// Camera field-of-view apperture in Y (degrees) in perspective, used as near plane width in orthographic
+    /// </summary>
+    public void FovY(float fovy)
+    {
+        _cam.FovY = fovy;
+    }
+
+    /// <summary>
+    /// Camera type, defines projection type: CAMERA_PERSPECTIVE or CAMERA_ORTHOGRAPHIC
+    /// </summary>
+    public void SetProjection(CameraProjection projection)
+    {
+        _cam.Projection = projection;
+    }
+
+    public Camera3D GetCamera3D() => _cam;
+}

Program.cs

@@ -18,17 +18,8 @@ namespace BakeryGame;
 internal class Program
 {
     private static World _world;
-
-    private static readonly EnvItem[] _envItems =
-    {
-        new EnvItem(new Rectangle(0, 0, 1000, 400), Color.LightGray, false),
-        new EnvItem(new Rectangle(0, 400, 1000, 200), Color.Gray, true),
-        new EnvItem(new Rectangle(300, 200, 400, 100), Color.Gray, true),
-        new EnvItem(new Rectangle(250, 300, 100, 10), Color.Gray, true),
-        new EnvItem(new Rectangle(650, 300, 100, 10), Color.Gray, true)
-    };
-
-    
+    private static int WindowWidth = 800;
+    private static int WindowHeight = 480;
 
     private static void Main(string[] args)
     {
@@ -36,10 +27,11 @@ internal class Program
         var playerFactory = new PlayerFactory(_world);
         var blockFactory = new BlockFactory(_world);
         
-        Raylib.InitWindow(800, 480, "Hello World");
+        Raylib.InitWindow(WindowWidth, WindowHeight, "Hello World");
 
-        var player = playerFactory.CreatePlayer(out var camera);
-        var block = blockFactory.GenerateMapOfBlocks().ToList();
+        CameraComponent camera;
+        var player = playerFactory.CreatePlayer(out camera);
+        var block = RoomBuilder.GenerateMapOfBlocks(blockFactory).ToList();
 
         SystemRegistrations.RegisterLogicGroup(_world);
         SystemRegistrations.RegisterGraphicsGroup(_world);
@@ -48,15 +40,15 @@ internal class Program
         while (!Raylib.WindowShouldClose())
         {
             var deltaTime = Raylib.GetFrameTime();
-            //Raylib.UpdateCamera(ref camera.Camera, CameraMode.Free);
+            //Raylib.UpdateCamera(ref camera.Camera, CameraMode.Custom);
             Raylib.BeginDrawing();
             Raylib.ClearBackground(Color.White);
-            Raylib.BeginMode3D(camera.Camera);
+            Raylib.BeginMode3D(camera.Camera.GetCamera3D());
             _world.Update(deltaTime);
-            Raylib.DrawGrid(10, 1.0f);
+            Raylib.DrawGrid(RoomBuilder.RoomSize, 1.0f);
             _world.CleanupUpdate(deltaTime);
             Raylib.EndMode3D();
-            Raylib.DrawFPS(100, 10);
+            Raylib.DrawFPS(WindowWidth - 100, 12);
             _world.LateUpdate(deltaTime);
             _world.Commit();
             Raylib.EndDrawing();

SystemRegistrations.cs

@@ -12,11 +12,13 @@ public static class SystemRegistrations
         var healthSystem = new HealthSystem { World = world };
         var movementSystem = new MovementSystem { World = world };
         var collisionSystem = new CollisionSystem(world);
+        
         var systemsGroup = world.CreateSystemsGroup();
         systemsGroup.AddSystem(healthSystem);
         systemsGroup.AddSystem(movementSystem);
         systemsGroup.AddSystem(collisionSystem);
         
+        
         systemsGroup.EnableSystem(movementSystem);
         systemsGroup.EnableSystem(healthSystem);
         systemsGroup.EnableSystem(collisionSystem);
@@ -28,7 +30,7 @@ public static class SystemRegistrations
         var renderSystemsGroup = world.CreateSystemsGroup();
         var hpRenreSystem = new HPRenderSystem { World = world };
         var ballRenderSystem = new PlayerRenderSystem { World = world };
-        var cameraSystem = new CameraSystem(world);
+        var cameraSystem = new CameraSystem() {World = world };
         var blockRenderSystem = new BlockRenderSystem(world);
 
         renderSystemsGroup.AddSystem(blockRenderSystem);

Systems/Player/CameraSystem.cs

@@ -1,62 +0,0 @@
-using BakeryGame.Components.Common;
-using BakeryGame.Components.Player;
-using Scellecs.Morpeh;
-
-namespace BakeryGame.Systems.Player;
-
-public class CameraSystem : ISystem
-{
-    private Filter _filter;
-
-    public CameraSystem(World world)
-    {
-        World = world;
-    }
-
-    public World World { get; set; }
-
-
-    public void OnAwake()
-    {
-        _filter = World.Filter.With<CameraComponent>().Build();
-    }
-
-    public void OnUpdate(float deltaTime)
-    {
-        foreach (var entity in _filter)
-        {
-            var position = entity.GetComponent<PositionComponent>().Position;
-            ref var cameraComponent = ref entity.GetComponent<CameraComponent>();
-
-            ref var camera = ref cameraComponent.Camera;
-            // Camera target follows player
-            //camera.Target.X = position.X;
-            //camera.Target.Z = position.Z;
-
-            // // Camera rotation controls
-            // if (IsKeyDown(KEY_A)) camera.rotation--;
-            // else if (IsKeyDown(KEY_S)) camera.rotation++;
-
-            // Limit camera rotation to 80 degrees (-40 to 40)
-            // if (camera.Rotation > 40) camera.Rotation = 40;
-            // else if (camera.Rotation < -40) camera.Rotation = -40;
-
-            // Camera zoom controls
-            // camera.Zoom += Raylib.GetMouseWheelMove() * 0.05f;
-            //
-            // if (camera.Zoom > 3.0f) camera.Zoom = 3.0f;
-            // else if (camera.Zoom < 0.1f) camera.Zoom = 0.1f;
-
-            // // Camera reset (zoom and rotation)
-            // if (IsKeyPressed(KEY_R))
-            // {
-            //     camera.zoom = 1.0f;
-            //     camera.rotation = 0.0f;
-            // }
-        }
-    }
-
-    public void Dispose()
-    {
-    }
-}

Systems/Rendering/CameraSystem.cs

@@ -0,0 +1,46 @@
+using BakeryGame.Components.Common;
+using BakeryGame.Components.Player;
+using Raylib_cs;
+using Scellecs.Morpeh;
+
+namespace BakeryGame.Systems.Rendering;
+
+public class CameraSystem: ILateSystem
+{
+    private Filter _player;
+    float sliderValue = 50.0f;  // Initial value of the slider
+    float minValue = -20.0f;      // Minimum value of the slider
+    float maxValue = 20.0f;    // Maximum value of the slider
+    Rectangle sliderRect = new Rectangle( 100, 50, 200, 20 );  // Rectangle defining the slider's position and size
+    bool isSliderActive = false;
+    private const float CameraSpeed = 0.1f;
+    private const float DistanceToPlayer = 10.0f;
+    
+    public void Dispose()
+    {
+    }
+
+    public void OnAwake()
+    {
+        _player = World.Filter.With<PlayerComponent>().Build();
+    }
+
+    public World World { get; set; }
+    
+    private float Lerp(float a, float b, float t) 
+    {
+        return a + (b - a) * t;
+    }
+    
+    public void OnUpdate(float deltaTime)
+    {
+        var player = _player.First();
+        ref var cameraComponent = ref player.GetComponent<CameraComponent>();
+        var camera = cameraComponent.Camera.GetCamera3D();
+        var playerPosition = player.GetComponent<PositionComponent>().Position;
+        // Update camera position to follow the player
+        cameraComponent.Camera.SetPosition(camera.Position with {X = Lerp(camera.Position.X, playerPosition.X, CameraSpeed), Z = Lerp(camera.Position.Z, playerPosition.Z + DistanceToPlayer, CameraSpeed)});
+        // Update camera target to look at the player
+        cameraComponent.Camera.SetTarget(playerPosition);
+    }
+}

Systems/Rendering/SliderSystem.cs

@@ -0,0 +1,75 @@
+using BakeryGame.Components.Common;
+using BakeryGame.Components.Player;
+using Raylib_cs;
+using Scellecs.Morpeh;
+
+namespace BakeryGame.Systems.Rendering;
+
+public class SliderSystem:ILateSystem
+{
+    private Filter _player;
+    float sliderValue = 50.0f;  // Initial value of the slider
+    float minValue = -20.0f;      // Minimum value of the slider
+    float maxValue = 20.0f;    // Maximum value of the slider
+    Rectangle sliderRect = new Rectangle( 100, 50, 200, 20 );  // Rectangle defining the slider's position and size
+    bool isSliderActive = false;
+    private const float CameraSpeed = 0.1f;
+    private const float DistanceToPlayer = 10.0f;
+    
+    public void Dispose()
+    {
+        
+    }
+
+    public void OnAwake()
+    {
+        _player = World.Filter.With<PlayerComponent>().Build();
+    }
+
+    public World World { get; set; }
+    
+    
+    private float Lerp(float a, float b, float t) 
+    {
+        return a + (b - a) * t;
+    }
+    
+    public void OnUpdate(float deltaTime)
+    {
+        
+        if (Raylib.IsMouseButtonPressed(MouseButton.Left)) {
+            // Check if mouse is clicked within the slider rectangle
+            if (Raylib.CheckCollisionPointRec(Raylib.GetMousePosition(), sliderRect)) {
+                isSliderActive = true;  // Slider is being interacted with
+            }
+        }
+        
+        if (Raylib.IsMouseButtonReleased(MouseButton.Left)) {
+            isSliderActive = false;  // Stop slider interaction
+        }
+            
+        // Update slider value when slider is active
+        if (isSliderActive) {
+            // // Calculate new slider value based on mouse position
+             float mousePosX = Raylib.GetMouseX();
+             sliderValue = minValue + (mousePosX - sliderRect.X) / sliderRect.Width * (maxValue - minValue);
+
+            // Clamp slider value within the valid range
+            if (sliderValue < minValue) sliderValue = minValue;
+            if (sliderValue > maxValue) sliderValue = maxValue;
+
+            // ref var cameraComponent = ref player.GetComponent<CameraComponent>();
+            // var camera = cameraComponent.Camera.GetCamera3D();
+            // cameraComponent.Camera.SetTarget(camera.Target with {X = sliderValue});
+        }
+        
+        // Draw slider background
+        Raylib.DrawRectangleRec(sliderRect, Color.LightGray);
+
+        // Draw slider handle
+        float sliderHandlePosX = sliderRect.X + (sliderValue - minValue) / (maxValue - minValue) * sliderRect.Width;
+        var sliderHandleRect = new Rectangle( sliderHandlePosX - 5, sliderRect.Y - 5, 10, sliderRect.Height + 10 );
+        Raylib.DrawRectangleRec(sliderHandleRect, Color.Blue);
+        isSliderActive = false;
+    }
+}