Move function into Move object

html/images/space.svg

@@ -446,16 +446,12 @@ const Move = (() => {
       const denom = x21*y43-x43*y21;
       const denomr = Math.round(x21r*100*y43r-x43r*y21r*100) / 100;
 
-
       const x31 = x3-x1;
       const x31r = subR(x3, x1);
 
       const y31 = y3-y1;
       const y31r = subR(y3, y1);
 
-
-
-
       // if (denom) {
       if (denomr) {
         // const s = ((x3-x1)*(y4-y3)-(x4-x3)*(y3-y1))/denom;
@@ -474,8 +470,6 @@ const Move = (() => {
         // const tr = (-(x21r*y31r*100*100-x31r*y21r*100*100) / denomr)/10000;
         const tr = -Math.round((x21r*y31r-x31r*y21r) / denomr * 100) / 100;
 
-
-
         // console.log("s", s, "t", t);
         // console.log("sr", sr, "tr", tr);
         const x1r = Math.round(x1 * 100);
@@ -487,60 +481,26 @@ const Move = (() => {
         const y3r = Math.round(y3 * 100);
         const y4r = Math.round(y4 * 100);
 
-
         // 2.03 * 10
         // 20.299999999999997
 
+
+        if (sr >= 0 && sr <= 1 && tr >= 0 && tr <= 1) {
+          const xs = x1 + s * (x2 - x1);
+          const ys = y1 + s * (y2 - y1);
+
+          const xsr = Math.round(x1r + sr * (x2r - x1r)) / 100;
+          const ysr = Math.round(y1r + sr * (y2r - y1r)) / 100;
+
+          const xtr = Math.round(x3r + tr * (x4r - x3r)) / 100;
+          const ytr = Math.round(y3r + tr * (y4r - y3r)) / 100;
+
           // offset position slightly (by adding 1 to sr), so contact point is
           // not inside the wall
           const xsrOff = Math.round(x1r + (sr + 1) * (x2r - x1r)) / 100;
           const ysrOff = Math.round(y1r + (sr + 1) * (y2r - y1r)) / 100;
 
-        // if (roundedS >= 0 && roundedS <= 1 && roundedT >= 0 && roundedT <= 1) {
-        // if (s >= 0 && s < 1 && t >= 0 && t <= 1) { // this falls through
-        // if (s >= 0 && s <= 1 && t >= 0 && t <= 1) { // this sometimes falls through
-        if (sr >= 0 && sr <= 1 && tr >= 0 && tr <= 1) { // this sometimes falls through
-          // const xs = x1 + s * (x2 - x1);
-          // const ys = y1 + s * (y2 - y1);
-
-          const xs = x1 + s * (x2 - x1);
-          const ys = y1 + s * (y2 - y1);
-          // console.log("xs", xs, "ys", ys);
-
-          // Math.round(Math.round(-2.03 * 100) + 0.45000000000000445 * (Math.round(-1.95 * 100) - Math.round(-2.03 * 100))) / 100
-          // console.log("x1", x1, "x2", x2);
-          // console.log("y1", y1, "y2", y2);
-
-          const xsr = Math.round(x1r + sr * (x2r - x1r)) / 100;
-          const ysr = Math.round(y1r + sr * (y2r - y1r)) / 100;
-
-
-          const xtr = Math.round(x3r + tr * (x4r - x3r)) / 100;
-          const ytr = Math.round(y3r + tr * (y4r - y3r)) / 100;
-
-          // console.log("xsr", xsr, "ysr", ysr, " ::: xtr", xtr, "ytr", ytr);
-
-          const lnD = distance(xtr, ytr, edge.xa, edge.ya);
-
-          const ln = document.createElementNS(namespaceURIsvg, 'line');
-          ln.setAttribute('x1', edge.xa);
-          ln.setAttribute('y1', edge.ya);
-          ln.setAttribute('x2', edge.xb);
-          ln.setAttribute('y2', edge.yb);
-
-          const lnP = ln.getPointAtLength(lnD);
-
-          // collision.position = { x: xs, y: ys };
-          // collision.position = { x: xsr, y: ysr };
           collision.position = { x: xsrOff, y: ysrOff };
-          // collision.position = { x: xtr, y: ytr };
-          // collision.position = lnP;
-
-          // collision.position = { x: xs, y: ys };
-          // collision.position = { x: +xs.toFixed(15), y: +ys.toFixed(15) };
-
-
-          // collision.position = { x: xc, y: yc };
 
           return true;
         }
@@ -618,6 +578,24 @@ const Move = (() => {
     };
   }
 
+  function cornerContactPosition(xc, yc, x, y, corner, cLength) {
+    const positionSeg = { xa: xc, ya: yc, xb: x, yb: y };
+    const posNormIntxn = perpIntxn(slope(positionSeg), x, y, corner.x, corner.y);
+
+    // shortest distance between corner and path
+    const aLength = distance(corner.x, corner.y, posNormIntxn.x, posNormIntxn.y);
+    // distance from position/normal intersection
+    const bLength = Math.sqrt(Math.abs(cLength ** 2 - aLength ** 2));
+
+    const intxnSeg = document.createElementNS(namespaceURIsvg, 'line');
+    intxnSeg.setAttribute('x1', posNormIntxn.x);
+    intxnSeg.setAttribute('y1', posNormIntxn.y);
+    intxnSeg.setAttribute('x2', x);
+    intxnSeg.setAttribute('y2', y);
+
+    return intxnSeg.getPointAtLength(bLength);
+  }
+
   function withinCollisionDistance({ x: x1, y: y1 }, { x: x2, y: y2 }, distance) {
     const diffx = x2;
     const diffy = y2;
@@ -1166,24 +1144,6 @@ function isLandable(edge) {
   // return Object.is(slope(edge), +0);
 }
 
-function cornerContactPosition(xc, yc, x, y, corner, cLength) {
-  const positionSeg = { xa: xc, ya: yc, xb: x, yb: y };
-  const posNormIntxn = perpIntxn(slope(positionSeg), x, y, corner.x, corner.y);
-
-  // shortest distance between corner and path
-  const aLength = distance(corner.x, corner.y, posNormIntxn.x, posNormIntxn.y);
-  // distance from position/normal intersection
-  const bLength = Math.sqrt(Math.abs(cLength ** 2 - aLength ** 2));
-
-  const intxnSeg = document.createElementNS(namespaceURIsvg, 'line');
-  intxnSeg.setAttribute('x1', posNormIntxn.x);
-  intxnSeg.setAttribute('y1', posNormIntxn.y);
-  intxnSeg.setAttribute('x2', x);
-  intxnSeg.setAttribute('y2', y);
-
-  return intxnSeg.getPointAtLength(bLength);
-}
-
 function edgeContactPosition(xc, yc, x, y, edge, radius) {
   const baseSlope = slope(edge);
   // if (Object.is(baseSlope, 0)) s.isLanded = true;
@@ -1297,7 +1257,7 @@ function updateShip(s, elapsed) {
   if (s.collision) {
     let posP;
     if (s.collision.corner) {
-      posP = cornerContactPosition(p.x, p.y, px, py, s.collision.corner, s.radius);
+      // posP = cornerContactPosition(p.x, p.y, px, py, s.collision.corner, s.radius);
     } else if (s.collision.edge) {
       if (isLandable(s.collision.edge) && s.gearDown) s.isLanded = true;