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assets/scripts.js: Improve precondition handling

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This commit is contained in:
Vladimir Panteleev 2019-07-28 08:16:31 +00:00
parent bc81c00be8
commit 59782b0707
1 changed files with 34 additions and 29 deletions
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63
assets/scripts.js
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@ -39,14 +39,14 @@ function preconditionToJS(cond) {
}
}
function checkPrecondition(segmentId) {
let precondition = bv.preconditions[segmentId];
function checkPrecondition(preconditionId) {
let precondition = bv.preconditions[preconditionId];
if (precondition) {
let cond = preconditionToJS(precondition);
let match = eval(cond);
console.log(cond, '==', match);
console.log(preconditionId, ':', cond, '==', match);
return match;
}
@ -54,29 +54,29 @@ function checkPrecondition(segmentId) {
return true;
}
function findSegment(id) {
if (id.startsWith('nsg-')) {
id = id.substr(4);
}
if (segmentMap.segments[id]) {
// check precondition
return id;
}
if (segmentGroups[id]) {
for (let v of segmentGroups[id]) {
if (v.segmentGroup) {
return findSegment(v.segmentGroup);
} else if (v.segment) {
// check precondition
return v.segment;
} else {
if (checkPrecondition(v))
return v;
}
function resolveSegmentGroup(sg) {
let results = [];
for (let v of segmentGroups[sg]) {
if (v.precondition) {
if (!checkPrecondition(v.precondition))
continue;
}
if (v.segmentGroup) {
results.push(resolveSegmentGroup(v.segmentGroup));
} else if (v.segment) {
// TODO: does the included precondition override or
// complement the segment precondition?
if (!checkPrecondition(v.segment))
continue;
results.push(v.segment);
} else {
if (!checkPrecondition(v))
continue;
results.push(v);
}
}
return id;
console.log('segment group', sg, '=>', results);
return results[0];
}
/// Returns the segment ID at the given timestamp.
@ -322,11 +322,14 @@ function ontimeupdate(evt) {
function playNextSegment() {
if (nextChoice >= 0) {
let x = currentChoiceMoment.choices[nextChoice];
let choiceId = x.segmentId ? x.segmentId : (x.sg ? x.sg : x.id);
var segmentId = findSegment(choiceId);
console.log('choice', choiceId, 'nextSegment', segmentId);
if (x.segmentId)
nextSegment = x.segmentId;
else if (x.sg)
nextSegment = resolveSegmentGroup(x.sg);
else
nextSegment = null;
console.log('choice', nextChoice, 'nextSegment', nextSegment);
applyImpression(x.impressionData);
nextSegment = segmentId;
}
let breadcrumb = 'breadcrumb_' + nextSegment;
@ -336,7 +339,9 @@ function playNextSegment() {
segmentTransition = true;
let segment = nextSegment;
nextSegment = null;
return playSegment(segment, true);
if (segment)
return playSegment(segment, true);
return false;
}
function jumpForward() {