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Fix belts being too slow sometimes, closes #999

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This commit is contained in:
tobspr 2020-12-07 19:15:57 +01:00
parent edc52a9271
commit 8e2efb0756
2 changed files with 22 additions and 1 deletions
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1
src/js/changelog.js
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@ -3,6 +3,7 @@ export const CHANGELOG = [
version: "1.2.2",
date: "07.12.2020",
entries: [
"Fix item readers and some other buildings slowing up belts, especially if they stalled (inspired by Keterr's fix)",
"Added the ability to edit constant signals by left clicking them",
"You can now add markers in the wire layer (partially by daanbreur)",
"Allow to cycle backwards in the toolbar with SHIFT + Tab (idea by EmeraldBlock)",

22
src/js/game/belt_path.js
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@ -1085,6 +1085,9 @@ export class BeltPath extends BasicSerializableObject {
// Reduce the spacing
nextDistanceAndItem[_nextDistance] -= clampedProgress;
// Advance all items behind by the progress we made
this.spacingToFirstItem += clampedProgress;
// If the last item can be ejected, eject it and reduce the spacing, because otherwise
// we lose velocity
if (isFirstItemProcessed && nextDistanceAndItem[_nextDistance] < 1e-7) {
@ -1097,6 +1100,24 @@ export class BeltPath extends BasicSerializableObject {
if (this.tryHandOverItem(nextDistanceAndItem[_item], excessVelocity)) {
this.items.pop();
const itemBehind = this.items[lastItemProcessed - 1];
if (itemBehind && this.numCompressedItemsAfterFirstItem > 0) {
// So, with the next tick we will skip this item, but it actually has the potential
// to process farther -> If we don't advance here, we loose a tiny bit of progress
// every tick which causes the belt to be slower than it actually is.
// Also see #999
const fixupProgress = Math.max(
0,
Math.min(remainingVelocity, itemBehind[_nextDistance])
);
// See above
itemBehind[_nextDistance] -= fixupProgress;
remainingVelocity -= fixupProgress;
this.spacingToFirstItem += fixupProgress;
}
// Reduce the number of compressed items since the first item no longer exists
this.numCompressedItemsAfterFirstItem = Math.max(
0,
this.numCompressedItemsAfterFirstItem - 1
@ -1110,7 +1131,6 @@ export class BeltPath extends BasicSerializableObject {
}
isFirstItemProcessed = false;
this.spacingToFirstItem += clampedProgress;
if (remainingVelocity < 1e-7) {
break;
}