Refactor

html/images/space.svg

@@ -131,7 +131,7 @@
 
   <!-- <polygon class="wall" points="-10,10 10,30 -10,40 -20,20" /> -->
   <!-- <polygon class="wall" points="-20,-10 0,10 -20,20 -30,0" /> -->
-  <!-- <polygon class="wall" points="-20,-10 20,10 -20,20 -30,0" /> -->
+  <polygon class="wall" points="-20,-10 20,10 -20,20 -30,0" />
 
   <!-- <polygon class="wall" points="-20,-50 -10,-50 -10,-60 -20,-60" /> -->
   <!-- <polygon class="wall" points="20,50 10,50 10,60 20,60" /> -->
@@ -536,6 +536,8 @@ const Move = (() => {
             return vector;
           }
 
+
+          function bounceVector(v, run, rise) {
             const vec1 = vector(v.x, v.y);
             const vec2 = vector(run, rise);
 
@@ -568,14 +570,24 @@ const Move = (() => {
             // 5. Add the first projection prA to the reverse of the second -prB
             // var new_vx:Number = prA_vx - prB_vx;
             // var new_vy:Number = prA_vy - prB_vy;
-          newX = prAvx - prBvx;
+            return {
-          newY = prAvy - prBvy;
+              x: prAvx - prBvx,
+              y: prAvy - prBvy,
+              vec1,
+              vec2
+            };
+          }
 
-          drawLine(p.x, p.y, p.x + vec2.rightNormal.x , p.y + vec2.rightNormal.y, "black"); // edge normal vector
+          // contact.velocity = { x: prAvx - prBvx, y: prAvy - prBvy };
-          drawLine(p.x, p.y, p.x + newX, p.y + newY, "blue"); // bounced velocity vector
+          contact.velocity = bounceVector(v, run, rise);
+
+          // edge normal vector
+          drawLine(p.x, p.y, p.x + contact.velocity.vec2.rightNormal.x , p.y + contact.velocity.vec2.rightNormal.y, "black");
+          // bounced velocity vector
+          drawLine(p.x, p.y, p.x + contact.velocity.x, p.y + contact.velocity.y, "blue");
 
           if (det < 0) {
-            Velocity[entity_id] = { x: newX, y: newY };
+            Velocity[entity_id] = contact.velocity;
             Position[entity_id] = contact.position;
           } else {
             Velocity[entity_id] = { x: v.x, y: v.y };