feat(renderer): Create Instruction and DMRender

Author: Alexis Huvier

SharpEngine/Renderer/DMRender.cs

@@ -0,0 +1,156 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using Raylib_cs;
+using SharpEngine.Math;
+using Color = SharpEngine.Utils.Color;
+
+namespace SharpEngine.Renderer;
+
+public static class DMRender
+{
+    public static List<Instruction> Instructions = new();
+
+    private static void DrawInstructions(ICollection instructions)
+    {
+        foreach (var instruction in Instructions)
+        {
+            switch (instruction.Type)
+            {
+                case InstructionType.ScissorMode:
+                    Raylib.BeginScissorMode((int)instruction.Parameters[0], (int)instruction.Parameters[1],
+                        (int)instruction.Parameters[2], (int)instruction.Parameters[3]);
+                    DrawInstructions(instruction.Parameters.GetRange(4, instructions.Count - 4)
+                        .Select(x => (Instruction)x).ToList());
+                    Raylib.EndScissorMode();
+                    break;
+                case InstructionType.DrawRectangle:
+                    Raylib.DrawRectangle((int)instruction.Parameters[0], (int)instruction.Parameters[1],
+                        (int)instruction.Parameters[2], (int)instruction.Parameters[3],
+                        (Color)instruction.Parameters[4]);
+                    break;
+                case InstructionType.DrawRectanglePro:
+                    Raylib.DrawRectanglePro((Rect)instruction.Parameters[0], (Vec2)instruction.Parameters[1],
+                        (float)instruction.Parameters[2], (Color)instruction.Parameters[3]);
+                    break;
+                case InstructionType.DrawTexturePro:
+                    Raylib.DrawTexturePro((Texture2D)instruction.Parameters[0], (Rect)instruction.Parameters[1],
+                        (Rect)instruction.Parameters[2], (Vec2)instruction.Parameters[3],
+                        (float)instruction.Parameters[4], (Color)instruction.Parameters[5]);
+                    break;
+                case InstructionType.DrawTextPro:
+                    Raylib.DrawTextPro((Font)instruction.Parameters[0], (string)instruction.Parameters[1],
+                        (Vec2)instruction.Parameters[2], (Vec2)instruction.Parameters[3],
+                        (float)instruction.Parameters[4], (float)instruction.Parameters[5],
+                        (float)instruction.Parameters[6], (Color)instruction.Parameters[7]);
+                    break;
+                case InstructionType.DrawRectangleLinesEx:
+                    Raylib.DrawRectangleLinesEx((Rect)instruction.Parameters[0], (float)instruction.Parameters[1],
+                        (Color)instruction.Parameters[2]);
+                    break;
+                case InstructionType.DrawTextEx:
+                    Raylib.DrawTextEx((Font)instruction.Parameters[0], (string)instruction.Parameters[1],
+                        (Vec2)instruction.Parameters[2], (float)instruction.Parameters[3],
+                        (float)instruction.Parameters[4], (Color)instruction.Parameters[5]);
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+        }
+    }
+
+    public static void Draw()
+    {
+        Instructions.Sort((i1, i2) => i1.ZLayer.CompareTo(i2.ZLayer));
+        DrawInstructions(Instructions);
+    }
+
+    public static void ScissorMode(int posX, int posY, int width, int height, InstructionDestination destination, int zLayer, Action scissorAction)
+    {
+        var instructions = new List<Instruction>(Instructions);
+        Instructions.Clear();
+        scissorAction();
+        var instruction = new Instruction
+        {
+            Type = InstructionType.ScissorMode,
+            Destination = destination,
+            ZLayer = zLayer,
+            Parameters = new List<object> { posX, posY, width, height }
+        };
+        instruction.Parameters.AddRange(Instructions.Select(x => (object)x));
+        Instructions = instructions;
+        Instructions.Add(instruction);
+    }
+
+    public static void DrawRectangle(Rect rectangle, Vec2 origin, float rotation, Color color, InstructionDestination destination, int zLayer)
+    {
+        Instructions.Add(new Instruction
+        {
+            Type = InstructionType.DrawRectanglePro,
+            Destination = destination,
+            ZLayer = zLayer,
+            Parameters = new List<object> { rectangle, origin, rotation, color }
+        });
+    }
+
+    public static void DrawRectangle(int posX, int posY, int width, int height, Color color,
+        InstructionDestination destination, int zLayer)
+    {
+        Instructions.Add(new Instruction
+        {
+            Type = InstructionType.DrawRectangle,
+            Destination = destination,
+            ZLayer = zLayer,
+            Parameters = new List<object> { posX, posY, width, height, color }
+        });
+    }
+
+    public static void DrawRectanglesLines(Rectangle rect, int borderSize, Color borderColor,
+        InstructionDestination destination, int zLayer)
+    {
+        Instructions.Add(new Instruction
+        {
+            Type = InstructionType.DrawRectangleLinesEx,
+            Destination = destination,
+            ZLayer = zLayer,
+            Parameters = new List<object> { rect, borderSize, borderColor }
+        });
+    }
+
+    public static void DrawTexture(Texture2D texture, Rect source, Rect dest, Vec2 origin, float rotation, Color tint,
+        InstructionDestination destination, int zLayer)
+    {
+        Instructions.Add(new Instruction
+        {
+            Type = InstructionType.DrawTexturePro,
+            Destination = destination,
+            ZLayer = zLayer,
+            Parameters = new List<object> { texture, source, dest, origin, rotation, tint }
+        });
+    }
+
+    public static void DrawText(Font font, string text, Vec2 position, Vec2 origin, float rotation, int fontSize,
+        int spacing, Color color, InstructionDestination destination, int zLayer)
+    {
+        Instructions.Add(new Instruction
+        {
+            Type = InstructionType.DrawTextPro,
+            Destination = destination,
+            ZLayer = zLayer,
+            Parameters = new List<object> { font, text, position, origin, rotation, fontSize, spacing, color }
+        });
+    }
+
+    public static void DrawText(Font font, string text, Vec2 position, int fontSize, int spacing, Color color,
+        InstructionDestination destination, int zLayer)
+    {
+        Instructions.Add(new Instruction
+        {
+            Type = InstructionType.DrawTextEx,
+            Destination = destination,
+            ZLayer = zLayer,
+            Parameters = new List<object> { font, text, position, fontSize, spacing, color }
+        });
+    }
+}

SharpEngine/Renderer/Instruction.cs

@@ -0,0 +1,11 @@
+using System.Collections.Generic;
+
+namespace SharpEngine.Renderer;
+
+public struct Instruction
+{
+    public InstructionType Type;
+    public InstructionDestination Destination;
+    public int ZLayer;
+    public List<object> Parameters;
+}

SharpEngine/Renderer/InstructionDestination.cs

@@ -0,0 +1,7 @@
+namespace SharpEngine.Renderer;
+
+public enum InstructionDestination
+{
+    Entity,
+    UI
+}

SharpEngine/Renderer/InstructionType.cs

@@ -0,0 +1,12 @@
+namespace SharpEngine.Renderer;
+
+public enum InstructionType
+{
+    DrawRectanglePro,
+    DrawTexturePro,
+    DrawTextPro,
+    DrawRectangle,
+    DrawRectangleLinesEx,
+    DrawTextEx,
+    ScissorMode
+}