64 lines
2.3 KiB
JavaScript
64 lines
2.3 KiB
JavaScript
const PoweredUP = require("..");
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const poweredUP = new PoweredUP.PoweredUP();
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poweredUP.scan(); // Start scanning for trains
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// Change these to make the train behave as you want
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const FORWARD_DIRECTION_COLOR = PoweredUP.Consts.Color.YELLOW;
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const BACKWARDS_DIRECTION_COLOR = PoweredUP.Consts.Color.RED;
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const TRAIN_SPEED = 40;
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const STOPPING_SPEED = 2000;
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const STOP_DELAY = 2000;
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const TRAIN_MOTOR_PORT = "A";
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let currentSpeed = 0;
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console.log("Looking for trains...");
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poweredUP.on("discover", async (hub) => { // Wait to discover a train
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let moving = true;
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await hub.connect(); // Connect to train
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console.log(`Connected to ${hub.name}!`);
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await hub.sleep(2000); // Wait two seconds before starting the train
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hub.setMotorSpeed(TRAIN_MOTOR_PORT, TRAIN_SPEED);
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currentSpeed = TRAIN_SPEED;
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console.log("Started moving");
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hub.on("color", async (port, color) => {
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if (color === FORWARD_DIRECTION_COLOR && moving) { // If yellow is seen, stop the train, wait seconds, and reverse direction
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console.log("Slowing down");
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moving = false;
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await hub.rampMotorSpeed(TRAIN_MOTOR_PORT, currentSpeed, 0, STOPPING_SPEED);
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currentSpeed = 0;
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console.log("Stopped");
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await hub.sleep(STOP_DELAY);
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console.log("Changing direction and speeding up");
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await hub.rampMotorSpeed(TRAIN_MOTOR_PORT, currentSpeed + 10, TRAIN_SPEED, STOPPING_SPEED);
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currentSpeed = TRAIN_SPEED;
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await hub.sleep(STOPPING_SPEED + 1000);
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moving = true;
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} else if (color === BACKWARDS_DIRECTION_COLOR && moving) { // If red is seen, stop the train, wait seconds, and reverse direction
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console.log("Slowing down");
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moving = false;
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await hub.rampMotorSpeed(TRAIN_MOTOR_PORT, currentSpeed, 0, STOPPING_SPEED);
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currentSpeed = 0;
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console.log("Stopped");
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await hub.sleep(STOP_DELAY);
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console.log("Changing direction and speeding up");
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await hub.rampMotorSpeed(TRAIN_MOTOR_PORT, -(currentSpeed + 10), -TRAIN_SPEED, STOPPING_SPEED);
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currentSpeed = -TRAIN_SPEED;
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await hub.sleep(STOPPING_SPEED + 1000);
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moving = true;
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}
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});
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}); |