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Add tilt blocks

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This commit is contained in:
Eric Rosenbaum 2019-02-19 16:09:58 -05:00
parent ba548701e2
commit a19585af75
1 changed files with 56 additions and 7 deletions
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63
src/extensions/scratch3_gdx_for/index.js
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@ -85,6 +85,12 @@ const FREEFALL_THRESHOLD = 0.5;
*/
const FREEFALL_ROTATION_FACTOR = 0.3;
/**
* Threshold in degrees for reporting that the sensor is tilted.
* @type {number}
*/
const TILT_THRESHOLD = 15;
/**
* Acceleration due to gravity, in m/s^2.
* @type {number}
@ -627,6 +633,22 @@ class Scratch3GdxForBlocks {
blockType: BlockType.REPORTER
},
'---',
{
opcode: 'whenTilted',
text: formatMessage({
id: 'gdxfor.whenTilted',
default: 'when tilted [TILT]',
description: 'when the sensor detects tilt'
}),
blockType: BlockType.HAT,
arguments: {
TILT: {
type: ArgumentType.STRING,
menu: 'tiltOptions',
defaultValue: TiltAxisValues.FRONT
}
}
},
{
opcode: 'whenGesture',
text: formatMessage({
@ -716,7 +738,22 @@ class Scratch3GdxForBlocks {
description: 'is the device in free fall?'
}),
blockType: BlockType.BOOLEAN
},
{
opcode: 'isTilted',
text: formatMessage({
id: 'gdxfor.isTilted',
default: 'tilted [TILT]?',
description: 'is the device tilted?'
}),
blockType: BlockType.BOOLEAN,
arguments: {
TILT: {
type: ArgumentType.STRING,
menu: 'tiltOptions',
defaultValue: TiltAxisValues.FRONT
}
}
}
],
menus: {
@ -757,24 +794,36 @@ class Scratch3GdxForBlocks {
}
}
whenTilted (args) {
return this._getTiltAngle(args.TILT) > TILT_THRESHOLD;
}
getTilt (args) {
return this._getTiltAngle(args.TILT);
}
isTilted (args) {
return this._getTiltAngle(args.TILT) > TILT_THRESHOLD;
}
_getTiltAngle (direction) {
// Tilt values are calculated using acceleration due to gravity,
// so we need to return 0 when the peripheral is not connected.
if (!this._peripheral.isConnected()) {
return 0;
}
switch (args.TILT) {
switch (direction) {
case TiltAxisValues.FRONT:
return Math.round(this._peripheral.getTiltFrontBack(false));
case TiltAxisValues.BACK:
return Math.round(this._peripheral.getTiltFrontBack(true));
case TiltAxisValues.BACK:
return Math.round(this._peripheral.getTiltFrontBack(false));
case TiltAxisValues.LEFT:
return Math.round(this._peripheral.getTiltLeftRight(false));
case TiltAxisValues.RIGHT:
return Math.round(this._peripheral.getTiltLeftRight(true));
case TiltAxisValues.RIGHT:
return Math.round(this._peripheral.getTiltLeftRight(false));
default:
log.warn(`Unknown direction in getTilt: ${args.TILT}`);
log.warn(`Unknown direction in getTilt: ${direction}`);
}
}