fix: add frame factor calculations

2026-06-26 22:23:47 +05:00
parent 0928eba0e3
commit ec01e1ce56
7 changed files with 42 additions and 26 deletions
@@ -1,3 +1,15 @@
+let frameFactor = 1;
+let _lastTime = 0;
+
+function calcDt(timestamp) {
+  if (!_lastTime || !timestamp) {
+    frameFactor = 1;
+  } else {
+    frameFactor = Math.min((timestamp - _lastTime) / (1000 / 60), 6);
+  }
+  _lastTime = timestamp || performance.now();
+}
+
 function crossTimeToSpeed(crossTimeSec) {
  const playH = H - S.removeZone;
  return playH / (crossTimeSec * 60);
@@ -191,7 +203,7 @@ function drawGrid() {
  ctx.strokeStyle = CONFIG.colors.primaryGrid;
  ctx.lineWidth = 1;
  const gridSize = S.gridSize;
-  bgOffset = (bgOffset + S.gridSpeed) % gridSize;
+  bgOffset = (bgOffset + S.gridSpeed * frameFactor) % gridSize;
  for (let x = 0; x <= W; x += gridSize) {
    ctx.beginPath();
    ctx.moveTo(x, 0);