{"id":207,"date":"2024-04-24T08:42:01","date_gmt":"2024-04-24T08:42:01","guid":{"rendered":"https:\/\/tensor.agenthub.uk\/?p=207"},"modified":"2024-04-24T08:42:48","modified_gmt":"2024-04-24T08:42:48","slug":"timescale-and-fixeddeltatime","status":"publish","type":"post","link":"https:\/\/tensorzen.blog\/?p=207","title":{"rendered":"timeScale vs fixedDeltaTime"},"content":{"rendered":"\n

‘Time.timeScale<\/strong>‘ is a property in Unity that affects the scale at which time passes in the game. This property can be used to create effects such as slow motion or to speed up the gameplay. It essentially modifies the speed at which the game’s time flows, relative to real-world time.<\/p>\n\n\n\n

Here is an example to demonstrates how this property works. In this Unity scene, there is a sphere that contains a ‘Rigidbody’ component. The sphere will fall freely from initial altitude 10 when the game is running.<\/p>\n\n\n\n

First, observe that ‘Time.timeScale’ default to 1.0.<\/p>\n\n\n\n

<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
long<\/span> previous <\/span>=<\/span> <\/span>0<\/span>;<\/span><\/span>\nprivate<\/span> <\/span>void<\/span> <\/span>Awake<\/span>()<\/span><\/span>\n{<\/span><\/span>\n    previous <\/span>=<\/span> (<\/span>long<\/span>)(DateTime.UtcNow.<\/span>Subtract<\/span>(<\/span>new<\/span> <\/span>DateTime<\/span>(<\/span>1970<\/span>, <\/span>1<\/span>, <\/span>1<\/span>))).TotalMilliseconds;<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nprivate<\/span> <\/span>void<\/span> <\/span>FixedUpdate<\/span>()<\/span><\/span>\n{<\/span><\/span>\n    <\/span>long<\/span> timestamp <\/span>=<\/span> (<\/span>long<\/span>)(DateTime.UtcNow.<\/span>Subtract<\/span>(<\/span>new<\/span> <\/span>DateTime<\/span>(<\/span>1970<\/span>, <\/span>1<\/span>, <\/span>1<\/span>))).TotalMilliseconds;<\/span><\/span>\n    Debug.<\/span>Log<\/span>(<\/span>$"<\/span>{<\/span>timestamp<\/span> <\/span>-<\/span> <\/span>previous<\/span>}<\/span>,<\/span>{<\/span>this<\/span>.<\/span>transform<\/span>.<\/span>position<\/span>.<\/span>y<\/span>}<\/span>"<\/span>);<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
Output:<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
98<\/span>,<\/span>10<\/span><\/span>\n344<\/span>,<\/span>9.996076<\/span><\/span>\n377<\/span>,<\/span>9.988228<\/span><\/span>\n384<\/span>,<\/span>9.976456<\/span><\/span>\n405<\/span>,<\/span>9.96076<\/span><\/span>\n425<\/span>,<\/span>9.94114<\/span><\/span>\n445<\/span>,<\/span>9.917596<\/span><\/span>\n465<\/span>,<\/span>9.890128<\/span><\/span>\n485<\/span>,<\/span>9.858736<\/span><\/span>\n504<\/span>,<\/span>9.82342<\/span><\/span>\n529<\/span>,<\/span>9.78418<\/span><\/span>\n544<\/span>,<\/span>9.741015<\/span><\/span>\n564<\/span>,<\/span>9.693928<\/span><\/span>\n585<\/span>,<\/span>9.642916<\/span><\/span>\n605<\/span>,<\/span>9.587979<\/span><\/span>\n625<\/span>,<\/span>9.529119<\/span><\/span>\n644<\/span>,<\/span>9.466335<\/span><\/span>\n664<\/span>,<\/span>9.399628<\/span><\/span>\n685<\/span>,<\/span>9.328996<\/span><\/span>\n705<\/span>,<\/span>9.254439<\/span><\/span>\n731<\/span>,<\/span>9.17596<\/span><\/span>\n745<\/span>,<\/span>9.093555<\/span><\/span>\n764<\/span>,<\/span>9.007228<\/span><\/span>\n784<\/span>,<\/span>8.916976<\/span><\/span>\n804<\/span>,<\/span>8.8228<\/span><\/span>\n824<\/span>,<\/span>8.7247<\/span><\/span>\n844<\/span>,<\/span>8.622676<\/span><\/span>\n865<\/span>,<\/span>8.516727<\/span><\/span>\n884<\/span>,<\/span>8.406856<\/span><\/span>\n905<\/span>,<\/span>8.293059<\/span><\/span>\n927<\/span>,<\/span>8.17534<\/span><\/span>\n946<\/span>,<\/span>8.053696<\/span><\/span>\n964<\/span>,<\/span>7.928128<\/span><\/span>\n985<\/span>,<\/span>7.798636<\/span><\/span>\n1004<\/span>,<\/span>7.66522<\/span><\/span>\n1024<\/span>,<\/span>7.52788<\/span><\/span>\n1045<\/span>,<\/span>7.386616<\/span><\/span>\n1065<\/span>,<\/span>7.241428<\/span><\/span>\n1084<\/span>,<\/span>7.092316<\/span><\/span>\n1105<\/span>,<\/span>6.93928<\/span><\/span>\n1125<\/span>,<\/span>6.78232<\/span><\/span>\n1145<\/span>,<\/span>6.621436<\/span><\/span>\n1165<\/span>,<\/span>6.456628<\/span><\/span>\n1185<\/span>,<\/span>6.287896<\/span><\/span>\n1207<\/span>,<\/span>6.11524<\/span><\/span>\n1224<\/span>,<\/span>5.93866<\/span><\/span>\n1244<\/span>,<\/span>5.758156<\/span><\/span>\n1265<\/span>,<\/span>5.573729<\/span><\/span>\n1285<\/span>,<\/span>5.385376<\/span><\/span>\n1304<\/span>,<\/span>5.1931<\/span><\/span>\n1325<\/span>,<\/span>4.996901<\/span><\/span>\n1345<\/span>,<\/span>4.796777<\/span><\/span>\n1365<\/span>,<\/span>4.592729<\/span><\/span>\n1385<\/span>,<\/span>4.384757<\/span><\/span>\n1405<\/span>,<\/span>4.172861<\/span><\/span>\n1425<\/span>,<\/span>3.957041<\/span><\/span>\n1445<\/span>,<\/span>3.737297<\/span><\/span>\n1464<\/span>,<\/span>3.513628<\/span><\/span>\n1484<\/span>,<\/span>3.286036<\/span><\/span>\n1505<\/span>,<\/span>3.05452<\/span><\/span>\n1525<\/span>,<\/span>2.81908<\/span><\/span>\n1546<\/span>,<\/span>2.579716<\/span><\/span>\n1564<\/span>,<\/span>2.336428<\/span><\/span>\n1585<\/span>,<\/span>2.089216<\/span><\/span>\n1605<\/span>,<\/span>1.83808<\/span><\/span>\n1625<\/span>,<\/span>1.58302<\/span><\/span>\n1645<\/span>,<\/span>1.324036<\/span><\/span>\n1665<\/span>,<\/span>1.061128<\/span><\/span>\n1685<\/span>,<\/span>0.7942955<\/span><\/span>\n1704<\/span>,<\/span>0.5235394<\/span><\/span>\n1725<\/span>,<\/span>0.2488593<\/span><\/span>\n1745<\/span>,<\/span>-<\/span>0.02974486<\/span><\/span>\n1765<\/span>,<\/span>-<\/span>0.312273<\/span><\/span>\n1785<\/span>,<\/span>-<\/span>0.5987252<\/span><\/span>\n1804<\/span>,<\/span>-<\/span>0.8891014<\/span><\/span>\n1825<\/span>,<\/span>-<\/span>1.183402<\/span><\/span>\n1844<\/span>,<\/span>-<\/span>1.481626<\/span><\/span>\n1864<\/span>,<\/span>-<\/span>1.783774<\/span><\/span>\n1884<\/span>,<\/span>-<\/span>2.089846<\/span><\/span>\n1905<\/span>,<\/span>-<\/span>2.399842<\/span><\/span>\n1925<\/span>,<\/span>-<\/span>2.713763<\/span><\/span>\n1945<\/span>,<\/span>-<\/span>3.031607<\/span><\/span>\n1965<\/span>,<\/span>-<\/span>3.353375<\/span><\/span>\n1985<\/span>,<\/span>-<\/span>3.679067<\/span><\/span>\n2004<\/span>,<\/span>-<\/span>4.008683<\/span><\/span>\n2025<\/span>,<\/span>-<\/span>4.342223<\/span><\/span>\n2045<\/span>,<\/span>-<\/span>4.679688<\/span><\/span>\n2065<\/span>,<\/span>-<\/span>5.021076<\/span><\/span>\n2085<\/span>,<\/span>-<\/span>5.366388<\/span><\/span>\n2104<\/span>,<\/span>-<\/span>5.715624<\/span><\/span>\n2125<\/span>,<\/span>-<\/span>6.068784<\/span><\/span>\n2145<\/span>,<\/span>-<\/span>6.425868<\/span><\/span>\n2165<\/span>,<\/span>-<\/span>6.786876<\/span><\/span>\n2185<\/span>,<\/span>-<\/span>7.151808<\/span><\/span>\n2205<\/span>,<\/span>-<\/span>7.520664<\/span><\/span>\n2225<\/span>,<\/span>-<\/span>7.893444<\/span><\/span>\n2244<\/span>,<\/span>-<\/span>8.270148<\/span><\/span>\n2265<\/span>,<\/span>-<\/span>8.650776<\/span><\/span>\n2285<\/span>,<\/span>-<\/span>9.035328<\/span><\/span>\n2304<\/span>,<\/span>-<\/span>9.423804<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
Set ‘Time.timeScale’ default to 10.0.<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
long<\/span> previous <\/span>=<\/span> <\/span>0<\/span>;<\/span><\/span>\nprivate<\/span> <\/span>void<\/span> <\/span>Awake<\/span>()<\/span><\/span>\n{<\/span><\/span>\n    Time.timeScale <\/span>=<\/span> <\/span>2.0f<\/span>;<\/span><\/span>\n    previous <\/span>=<\/span> (<\/span>long<\/span>)(DateTime.UtcNow.<\/span>Subtract<\/span>(<\/span>new<\/span> <\/span>DateTime<\/span>(<\/span>1970<\/span>, <\/span>1<\/span>, <\/span>1<\/span>))).TotalMilliseconds;<\/span><\/span>\n}<\/span><\/span>\n<\/span>\nprivate<\/span> <\/span>void<\/span> <\/span>FixedUpdate<\/span>()<\/span><\/span>\n{<\/span><\/span>\n    <\/span>long<\/span> timestamp <\/span>=<\/span> (<\/span>long<\/span>)(DateTime.UtcNow.<\/span>Subtract<\/span>(<\/span>new<\/span> <\/span>DateTime<\/span>(<\/span>1970<\/span>, <\/span>1<\/span>, <\/span>1<\/span>))).TotalMilliseconds;<\/span><\/span>\n    Debug.<\/span>Log<\/span>(<\/span>$"<\/span>{<\/span>timestamp<\/span> <\/span>-<\/span> <\/span>previous<\/span>}<\/span>,<\/span>{<\/span>this<\/span>.<\/span>transform<\/span>.<\/span>position<\/span>.<\/span>y<\/span>}<\/span>"<\/span>);<\/span><\/span>\n}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
Output:<\/p>\n\n\n\n
<\/circle><\/circle><\/circle><\/g><\/svg><\/span><\/path><\/path><\/svg><\/span>
101<\/span>,<\/span>10<\/span><\/span>\n385<\/span>,<\/span>9.996076<\/span><\/span>\n386<\/span>,<\/span>9.988228<\/span><\/span>\n403<\/span>,<\/span>9.976456<\/span><\/span>\n411<\/span>,<\/span>9.96076<\/span><\/span>\n416<\/span>,<\/span>9.94114<\/span><\/span>\n425<\/span>,<\/span>9.917596<\/span><\/span>\n435<\/span>,<\/span>9.890128<\/span><\/span>\n446<\/span>,<\/span>9.858736<\/span><\/span>\n455<\/span>,<\/span>9.82342<\/span><\/span>\n466<\/span>,<\/span>9.78418<\/span><\/span>\n475<\/span>,<\/span>9.741015<\/span><\/span>\n486<\/span>,<\/span>9.693928<\/span><\/span>\n496<\/span>,<\/span>9.642916<\/span><\/span>\n506<\/span>,<\/span>9.587979<\/span><\/span>\n516<\/span>,<\/span>9.529119<\/span><\/span>\n526<\/span>,<\/span>9.466335<\/span><\/span>\n536<\/span>,<\/span>9.399628<\/span><\/span>\n547<\/span>,<\/span>9.328996<\/span><\/span>\n556<\/span>,<\/span>9.254439<\/span><\/span>\n578<\/span>,<\/span>9.17596<\/span><\/span>\n579<\/span>,<\/span>9.093555<\/span><\/span>\n586<\/span>,<\/span>9.007228<\/span><\/span>\n596<\/span>,<\/span>8.916976<\/span><\/span>\n606<\/span>,<\/span>8.8228<\/span><\/span>\n618<\/span>,<\/span>8.7247<\/span><\/span>\n626<\/span>,<\/span>8.622676<\/span><\/span>\n635<\/span>,<\/span>8.516727<\/span><\/span>\n646<\/span>,<\/span>8.406856<\/span><\/span>\n656<\/span>,<\/span>8.293059<\/span><\/span>\n665<\/span>,<\/span>8.17534<\/span><\/span>\n676<\/span>,<\/span>8.053696<\/span><\/span>\n686<\/span>,<\/span>7.928128<\/span><\/span>\n695<\/span>,<\/span>7.798636<\/span><\/span>\n706<\/span>,<\/span>7.66522<\/span><\/span>\n716<\/span>,<\/span>7.52788<\/span><\/span>\n726<\/span>,<\/span>7.386616<\/span><\/span>\n736<\/span>,<\/span>7.241428<\/span><\/span>\n746<\/span>,<\/span>7.092316<\/span><\/span>\n755<\/span>,<\/span>6.93928<\/span><\/span>\n770<\/span>,<\/span>6.78232<\/span><\/span>\n776<\/span>,<\/span>6.621436<\/span><\/span>\n786<\/span>,<\/span>6.456628<\/span><\/span>\n796<\/span>,<\/span>6.287896<\/span><\/span>\n806<\/span>,<\/span>6.11524<\/span><\/span>\n816<\/span>,<\/span>5.93866<\/span><\/span>\n825<\/span>,<\/span>5.758156<\/span><\/span>\n835<\/span>,<\/span>5.573729<\/span><\/span>\n845<\/span>,<\/span>5.385376<\/span><\/span>\n856<\/span>,<\/span>5.1931<\/span><\/span>\n866<\/span>,<\/span>4.996901<\/span><\/span>\n876<\/span>,<\/span>4.796777<\/span><\/span>\n886<\/span>,<\/span>4.592729<\/span><\/span>\n896<\/span>,<\/span>4.384757<\/span><\/span>\n905<\/span>,<\/span>4.172861<\/span><\/span>\n916<\/span>,<\/span>3.957041<\/span><\/span>\n926<\/span>,<\/span>3.737297<\/span><\/span>\n936<\/span>,<\/span>3.513628<\/span><\/span>\n946<\/span>,<\/span>3.286036<\/span><\/span>\n956<\/span>,<\/span>3.05452<\/span><\/span>\n971<\/span>,<\/span>2.81908<\/span><\/span>\n976<\/span>,<\/span>2.579716<\/span><\/span>\n985<\/span>,<\/span>2.336428<\/span><\/span>\n996<\/span>,<\/span>2.089216<\/span><\/span>\n1006<\/span>,<\/span>1.83808<\/span><\/span>\n1016<\/span>,<\/span>1.58302<\/span><\/span>\n1026<\/span>,<\/span>1.324036<\/span><\/span>\n1036<\/span>,<\/span>1.061128<\/span><\/span>\n1045<\/span>,<\/span>0.7942955<\/span><\/span>\n1059<\/span>,<\/span>0.5235394<\/span><\/span>\n1066<\/span>,<\/span>0.2488593<\/span><\/span>\n1076<\/span>,<\/span>-<\/span>0.02974486<\/span><\/span>\n1085<\/span>,<\/span>-<\/span>0.312273<\/span><\/span>\n1096<\/span>,<\/span>-<\/span>0.5987252<\/span><\/span>\n1106<\/span>,<\/span>-<\/span>0.8891014<\/span><\/span>\n1116<\/span>,<\/span>-<\/span>1.183402<\/span><\/span>\n1126<\/span>,<\/span>-<\/span>1.481626<\/span><\/span>\n1136<\/span>,<\/span>-<\/span>1.783774<\/span><\/span>\n1145<\/span>,<\/span>-<\/span>2.089846<\/span><\/span>\n1156<\/span>,<\/span>-<\/span>2.399842<\/span><\/span>\n1166<\/span>,<\/span>-<\/span>2.713763<\/span><\/span>\n1176<\/span>,<\/span>-<\/span>3.031607<\/span><\/span>\n1186<\/span>,<\/span>-<\/span>3.353375<\/span><\/span>\n1196<\/span>,<\/span>-<\/span>3.679067<\/span><\/span>\n1206<\/span>,<\/span>-<\/span>4.008683<\/span><\/span>\n1216<\/span>,<\/span>-<\/span>4.342223<\/span><\/span>\n1226<\/span>,<\/span>-<\/span>4.679688<\/span><\/span>\n1236<\/span>,<\/span>-<\/span>5.021076<\/span><\/span>\n1246<\/span>,<\/span>-<\/span>5.366388<\/span><\/span>\n1256<\/span>,<\/span>-<\/span>5.715624<\/span><\/span>\n1265<\/span>,<\/span>-<\/span>6.068784<\/span><\/span>\n1279<\/span>,<\/span>-<\/span>6.425868<\/span><\/span>\n1286<\/span>,<\/span>-<\/span>6.786876<\/span><\/span>\n1296<\/span>,<\/span>-<\/span>7.151808<\/span><\/span>\n1305<\/span>,<\/span>-<\/span>7.520664<\/span><\/span>\n1315<\/span>,<\/span>-<\/span>7.893444<\/span><\/span>\n1326<\/span>,<\/span>-<\/span>8.270148<\/span><\/span>\n1336<\/span>,<\/span>-<\/span>8.650776<\/span><\/span>\n1345<\/span>,<\/span>-<\/span>9.035328<\/span><\/span>\n1356<\/span>,<\/span>-<\/span>9.423804<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
We can observe that when ‘Time.timeScale’ is set to 1, it takes approximately 2301 millisecond for the y value to update 100 times. However, it takes only 1305 ms when ‘Time.timeScale’ is set to 2. Despite this, the magnitude of change in y’s position remains the same. In simpler term, the real-time speed can increase up to twice the normal rate.<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
‘Time.timeScale‘ is a property in Unity that affects the scale at which time passes in the game. This property can be used to create effects such as slow […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25,26],"tags":[],"class_list":["post-207","post","type-post","status-publish","format-standard","hentry","category-in-english","category-unity"],"_links":{"self":[{"href":"https:\/\/tensorzen.blog\/index.php?rest_route=\/wp\/v2\/posts\/207","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tensorzen.blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tensorzen.blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tensorzen.blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tensorzen.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=207"}],"version-history":[{"count":3,"href":"https:\/\/tensorzen.blog\/index.php?rest_route=\/wp\/v2\/posts\/207\/revisions"}],"predecessor-version":[{"id":322,"href":"https:\/\/tensorzen.blog\/index.php?rest_route=\/wp\/v2\/posts\/207\/revisions\/322"}],"wp:attachment":[{"href":"https:\/\/tensorzen.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tensorzen.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tensorzen.blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}