From 13bdcec283a609d7729cb1be7fca64838bd73b75 Mon Sep 17 00:00:00 2001
From: BuildTools <buffer@sidekek.ml>
Date: Tue, 29 Dec 2020 17:25:59 -0500
Subject: [PATCH] minimise window.Draw() calls using a RenderTexture, improving
 performance

---
 Program.cs          | 7 ++++++-
 ball.cs             | 4 ++--
 collisionHandler.cs | 9 +++++++++
 entityList.cs       | 2 +-
 globals.cs          | 3 ++-
 5 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/Program.cs b/Program.cs
index 3888a62..59c9453 100644
--- a/Program.cs
+++ b/Program.cs
@@ -22,11 +22,16 @@ namespace game
 			g.entityList.Add(new ball_t(25f, new Vector2f(300, 100), new Vector2f(.2f, .2f)));
 			g.entityList.Add(new ball_t(25f, new Vector2f(200, 100), new Vector2f(.2f, .2f)));
 
+
 			while (window.IsOpen)
 			{
 				window.DispatchEvents();
-				window.Clear();
 				g.entityList.Run(window);
+				g.renderTexture.Display();
+				window.Clear();
+				Sprite sprite = new Sprite(g.renderTexture.Texture);
+				window.Draw(sprite);
+				g.renderTexture.Clear();
 				window.Display();
 			}
 		}
diff --git a/ball.cs b/ball.cs
index d775eec..ffef24d 100644
--- a/ball.cs
+++ b/ball.cs
@@ -47,7 +47,7 @@ namespace game
 				this.velocity /= 2f;
 				this.shape.Position += new Vector2f(0, -.1F);
 				this.shape.Position = new Vector2f(Math.Clamp(this.shape.Position.X, 0, 1280), Math.Clamp(this.shape.Position.Y, 0, 720));
-				Console.WriteLine("COLLISION: "+this.velocity.Y.ToString());
+				//Console.WriteLine("COLLISION: "+this.velocity.Y.ToString());
 			}
 			Vector2f oldPosition = this.shape.Position;
 			this.shape.Position += this.velocity;
@@ -67,7 +67,7 @@ namespace game
 		public void Run(RenderWindow window)
 		{
 			RunPhysics(new Vector2f(0f, .0001f));
-			window.Draw(this.shape);
+			g.renderTexture.Draw(this.shape);
 		}
 	}
 }
diff --git a/collisionHandler.cs b/collisionHandler.cs
index 9d12a35..50728e8 100644
--- a/collisionHandler.cs
+++ b/collisionHandler.cs
@@ -22,6 +22,15 @@ namespace game
 		{
 			return (float)Math.Sqrt(v.X * v.X + v.Y * v.Y);
 		}
+		public static float TEMP_vecDist(Vector2f v, Vector2f v2)
+		{
+			Vector2f delta = new Vector2f();
+
+			delta.X = v.X - v2.X;
+			delta.X = v.Y - v2.Y;
+
+			return TEMP_vecLen(delta);
+		}
 		public static List<ball_t> registry = new List<ball_t>();
 
 		public static collision_t isColliding(ball_t ball)
diff --git a/entityList.cs b/entityList.cs
index 3f59816..9701eb7 100644
--- a/entityList.cs
+++ b/entityList.cs
@@ -6,7 +6,7 @@ using game;
 
 namespace game
 {
-	class entityList : List<ball_t>
+	class entityList_t : List<ball_t>
 	{
 		public void Run(RenderWindow window)
 		{
diff --git a/globals.cs b/globals.cs
index fd12e37..26c8923 100644
--- a/globals.cs
+++ b/globals.cs
@@ -13,6 +13,7 @@ namespace game
 	{
 		public static mouse_t mouse = new mouse_t();
 		public static Random rand = new Random();
-		public static entityList entityList = new entityList();
+		public static entityList_t entityList = new entityList_t();
+		public static RenderTexture renderTexture = new RenderTexture(1280, 720);
 	}
 }