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Merged
merged 4 commits into from
Jun 19, 2025
Merged

Next #170

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f813c0d
improve game loop
luizbills Jun 19, 2025
de02371
update deps
luizbills Jun 19, 2025
2bc1943
fix game loop
luizbills Jun 19, 2025
88b6e4b
bump version
luizbills Jun 19, 2025
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28 changes: 13 additions & 15 deletions bun.lock
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Original file line number Diff line number Diff line change
Expand Up @@ -3,15 +3,13 @@
"workspaces": {
"": {
"name": "litecanvas",
"dependencies": {
"tap-min": "^3.0.0",
},
"devDependencies": {
"@swc/core": "^1.12.1",
"@swc/core": "^1.12.3",
"ava": "^6.4.0",
"esbuild": "^0.25.5",
"gzip-size": "^7.0.0",
"prettier": "^3.5.3",
"tap-min": "^3.0.0",
},
},
},
Expand Down Expand Up @@ -84,27 +82,27 @@

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Expand Down
13 changes: 5 additions & 8 deletions package.json
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Original file line number Diff line number Diff line change
@@ -1,16 +1,17 @@
{
"name": "litecanvas",
"version": "0.83.3",
"version": "0.83.4",
"description": "Lightweight HTML5 canvas 2D game engine suitable for small projects and creative coding. Inspired by PICO-8 and P5/Processing.",
"license": "MIT",
"author": "Luiz Bills <luizbills@pm.me>",
"contributors": [],
"devDependencies": {
"@swc/core": "^1.12.1",
"@swc/core": "^1.12.3",
"ava": "^6.4.0",
"esbuild": "^0.25.5",
"gzip-size": "^7.0.0",
"prettier": "^3.5.3"
"prettier": "^3.5.3",
"tap-min": "^3.0.0"
},
"homepage": "https://litecanvas.github.io/about.html",
"repository": {
Expand Down Expand Up @@ -39,8 +40,7 @@
"2d",
"html5",
"gamedev",
"game",
"engine",
"game engine",
"javascript",
"js13k",
"creative-coding",
Expand All @@ -57,8 +57,5 @@
"tests/**/*",
"!tests/_mocks"
]
},
"dependencies": {
"tap-min": "^3.0.0"
}
}
29 changes: 13 additions & 16 deletions src/index.js
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Expand Up @@ -1401,29 +1401,26 @@ export default function litecanvas(settings = {}) {
* @param {DOMHighResTimeStamp} now
*/
function drawFrame(now) {
let updated = 0,
frameTime = (now - _lastFrameTime) / 1000

_lastFrameTime = now
let updated = 0

if (settings.animate) {
if (frameTime > 0.3) {
console.warn('skipping too long frame')
} else {
_accumulated += frameTime

while (_accumulated >= _deltaTime) {
updated++
instance.emit('update', _deltaTime * _timeScale, updated)
instance.def('T', instance.T + _deltaTime * _timeScale)
_accumulated -= _deltaTime
}
// prevents too long frames
_accumulated += math.min(0.2, (now - _lastFrameTime) / 1000)
_lastFrameTime = now

while (_accumulated >= _deltaTime) {
updated++
instance.emit('update', _deltaTime * _timeScale, updated)
instance.def('T', instance.T + _deltaTime * _timeScale)
_accumulated -= _deltaTime
}

// request the next frame
// check if the last ID exists, because
// quit() delete it (sets to zero)
if (_rafid) _rafid = raf(drawFrame)
if (_rafid) {
_rafid = raf(drawFrame)
}
} else {
// when the canvas is not animated
// we force one frame when redraws are triggered
Expand Down