From ed4a76a8fe639d00689dceddfe755a22cdcfa597 Mon Sep 17 00:00:00 2001
From: Tyler Murphy <tylermurphy534@gmail.com>
Date: Thu, 19 Jan 2023 08:53:44 -0500
Subject: [PATCH] movement

---
 public/gl/gl.js |  6 +++++
 public/test.js  | 63 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 69 insertions(+)

diff --git a/public/gl/gl.js b/public/gl/gl.js
index 20b6225..ca0dbe6 100644
--- a/public/gl/gl.js
+++ b/public/gl/gl.js
@@ -10,9 +10,15 @@ export { Mat4 } from './math/Mat4.js'
 export { Vec2 } from './math/Vec2.js'
 export { Vec3 } from './math/Vec3.js'
 export { Loop }
+export { DT }
 
+var DT = 0;
+var last = Date.now()
 const Loop = (fn) => {
     const callback = () => {
+        var now = Date.now()
+        DT = ( now - last) / 1000
+        last = now
         fn()
         window.requestAnimationFrame(callback)
     }
diff --git a/public/test.js b/public/test.js
index 65e059a..99ddc7f 100644
--- a/public/test.js
+++ b/public/test.js
@@ -30,7 +30,70 @@ async function main() {
     GL.Loop(() => {
         Renderer.draw(Scene, Camera)
         Cube.rotation.add(a)
+        updateInputs(Camera) 
     });
 }
 
+const clamp = (num, min, max) => Math.min(Math.max(num, min), max);
+
+const LEFT = 37;
+const RIGHT = 39;
+const UP = 38;
+const DOWN = 40;
+const W = 87;
+const A = 65;
+const S = 83;
+const D = 68;
+const Q = 81;
+const E = 69;
+const lookSpeed = 50;
+const moveSpeed = 10;
+function updateInputs(Camera) {
+    var rotate = new GL.Vec3();
+    if (keys[RIGHT]) rotate.y += 1;
+    if (keys[LEFT]) rotate.y -= 1;
+    if (keys[UP]) rotate.x -= 1;
+    if (keys[DOWN]) rotate.x += 1;
+    if(rotate.dot(rotate) > Number.EPSILON) {
+        var normal = rotate.normalize()
+        console.log(lookSpeed * GL.DT * normal.x, lookSpeed * GL.DT * normal.y)
+        Camera.rotation.x += lookSpeed * GL.DT * normal.x;
+        Camera.rotation.y += lookSpeed * GL.DT * normal.y;
+        Camera.rotation.z += lookSpeed * GL.DT * normal.z;
+    }
+    Camera.rotation.x = clamp(Camera.rotation.x, -90, 90)
+    Camera.rotation.y = Camera.rotation.y % 360
+
+    const yaw = Camera.rotation.y * (Math.PI/180);
+    var forward = new GL.Vec3(Math.sin(yaw), 0, Math.cos(yaw));
+    var right = new GL.Vec3(forward.z, 0, -forward.x);
+    var up = new GL.Vec3(0, 1, 0);
+
+    var move = new GL.Vec3();
+    if (keys[W]) move.sub(forward)
+    if (keys[S]) move.add(forward)
+    if (keys[A]) move.sub(right)
+    if (keys[D]) move.add(right)
+    if (keys[Q]) move.sub(up)
+    if (keys[E]) move.add(up)
+
+    if(move.dot(move) > Number.EPSILON) {
+        var normal = move.normalize()
+        Camera.position.x += moveSpeed * GL.DT * normal.x;
+        Camera.position.y += moveSpeed * GL.DT * normal.y;
+        Camera.position.z += moveSpeed * GL.DT * normal.z;
+    }
+}
+
+var keys = {}
+function setupInputs() {
+    document.onkeydown = function(e) {
+        keys[e.keyCode] = true;
+    };
+    document.onkeyup = function(e) {
+        keys[e.keyCode] = false;
+    }
+}
+
+setupInputs()
 main()
\ No newline at end of file