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Fix NaN acceleration on mobile (#1984)

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Joey Wunderlich 2019-04-08 15:11:55 -07:00 committed by GitHub
parent 6a28dd985f
commit 180bd07783
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1 changed files with 7 additions and 2 deletions
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9
sim/visuals/microbit.ts
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@ -909,8 +909,13 @@ path.sim-board {
}
const bbox = this.element.getBoundingClientRect();
const ax = (ev.clientX - bbox.width / 2) / (bbox.width / 3);
const ay = (ev.clientY - bbox.height / 2) / (bbox.height / 3);
// ev.clientX and ev.clientY are not defined on mobile iOS
const xPos = ev.clientX != null ? ev.clientX : ev.pageX;
const yPos = ev.clientY != null ? ev.clientY : ev.pageY;
const ax = (xPos - bbox.width / 2) / (bbox.width / 3);
const ay = (yPos - bbox.height / 2) / (bbox.height / 3);
const x = - Math.max(- 1023, Math.min(1023, Math.floor(ax * 1023)));
const y = - Math.max(- 1023, Math.min(1023, Math.floor(ay * 1023)));