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Implement move steps, turn right, turn left, point in direction

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This commit is contained in:
Tim Mickel 2016-06-29 23:08:10 -04:00
parent 727d2c0d23
commit 42f0f66acd
1 changed files with 22 additions and 5 deletions
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27
src/blocks/scratch3_motion.js
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@ -1,3 +1,5 @@
var MathUtil = require('../util/math-util');
function Scratch3MotionBlocks(runtime) { function Scratch3MotionBlocks(runtime) {
/** /**
* The runtime instantiating this block package. * The runtime instantiating this block package.
@ -12,20 +14,35 @@ function Scratch3MotionBlocks(runtime) {
*/ */
Scratch3MotionBlocks.prototype.getPrimitives = function() { Scratch3MotionBlocks.prototype.getPrimitives = function() {
return { return {
'motion_movesteps': this.moveSteps,
'motion_gotoxy': this.goToXY, 'motion_gotoxy': this.goToXY,
'motion_turnright': this.turnRight 'motion_turnright': this.turnRight,
'motion_turnleft': this.turnLeft,
'motion_pointindirection': this.pointInDirection
}; };
}; };
Scratch3MotionBlocks.prototype.moveSteps = function (args, util) {
var radians = MathUtil.degToRad(util.target.direction);
var dx = args.STEPS * Math.cos(radians);
var dy = args.STEPS * Math.sin(radians);
util.target.setXY(util.target.x + dx, util.target.y + dy);
};
Scratch3MotionBlocks.prototype.goToXY = function (args, util) { Scratch3MotionBlocks.prototype.goToXY = function (args, util) {
util.target.setXY(args.X, args.Y); util.target.setXY(args.X, args.Y);
}; };
Scratch3MotionBlocks.prototype.turnRight = function (args, util) { Scratch3MotionBlocks.prototype.turnRight = function (args, util) {
if (args.DEGREES !== args.DEGREES) { util.target.setDirection(util.target.direction + args.DEGREES);
throw "Bad degrees" + args.DEGREES; };
}
util.target.setDirection(args.DEGREES + util.target.direction); Scratch3MotionBlocks.prototype.turnLeft = function (args, util) {
util.target.setDirection(util.target.direction - args.DEGREES);
};
Scratch3MotionBlocks.prototype.pointInDirection = function (args, util) {
util.target.setDirection(args.DIRECTION);
}; };
module.exports = Scratch3MotionBlocks; module.exports = Scratch3MotionBlocks;