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Added a special case in motorOnForRotation() to avoid hanging blocks if power is 0
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@ -1695,6 +1695,8 @@ class Scratch3BoostBlocks {
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const promises = motors.map(portID => {
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const motor = this._peripheral.motor(portID);
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if (motor) {
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// to avoid a hanging block if power is 0, return an immediately resolving promise.
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if (motor.power === 0) return new Promise(resolve => resolve());
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return new Promise(resolve => {
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motor.turnOnForDegrees(degrees, sign);
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motor.pendingPromiseFunction = resolve;
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