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Seed history properly and dt clamp.

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Richard Davey 2017-05-03 02:21:32 +01:00
parent e5b82eb9b9
commit 9eb1676482
2 changed files with 10 additions and 7 deletions
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15
v3/src/boot/VariableTimeStep.js
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@ -54,7 +54,7 @@ VariableTimeStep.prototype = {
for (var i = 0; i < this.deltaSmoothingMax; i++) for (var i = 0; i < this.deltaSmoothingMax; i++)
{ {
history[i] = 0; history[i] = 0.0166;
} }
this.delta = 0; this.delta = 0;
@ -76,16 +76,19 @@ VariableTimeStep.prototype = {
// delta time // delta time
var dt = (time - this.lastTime) / 1000; var dt = (time - this.lastTime) / 1000;
if (dt < 0 || dt > 1) // min / max range
if (dt < 0.0001 || dt > 0.5)
{ {
// Probably super bad start time or browser tab inactivity / context loss // Probably super bad start time or browser tab inactivity / context loss
// so use the last 'sane' dt value // so use the last 'sane' dt value
dt = history[idx]; console.log('dt sync', dt, 'ms over', history[idx]);
}
// clamp delta to 0.0001 to 0.5 range dt = history[idx];
dt = Math.max(Math.min(dt, 0.5), 0.0001);
// clamp delta to 0.0001 to 0.5 range
dt = Math.max(Math.min(dt, 0.5), 0.0001);
}
// Smooth out the delta over the previous X frames // Smooth out the delta over the previous X frames

2
v3/src/checksum.js
View file

@ -1,4 +1,4 @@
var CHECKSUM = { var CHECKSUM = {
build: '1fea37a0-2f97-11e7-93dd-fd6f78427b2e' build: 'f7392da0-2f9d-11e7-ba4c-5959ed8510b1'
}; };
module.exports = CHECKSUM; module.exports = CHECKSUM;