CODEHS FUNCTIONS AND PARAMETERS

CODEHS: FUNCTIONS AND PARAMETERS
I WILL UPDATE THIS AS I COMPLETE THEM & GET THEM 100% CONFIRMED
5.1.4: SQUARE
function start(){
    square(5);
    square(10);
}

function square(x){
    var squareX = x * x;
    println(squareX);
}
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5.1.5: TRIPLE
function start(){
    triple(5);
    triple(10);
}

function triple(){
    var tripleX = 3 * x;
    println(tripleX);
}
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5.2.4: AREA OF A TRIANGLE
function start(){
    triArea(5,10);
    triArea(10,5);
}

function triArea(x,y){
    var areaX = (1 / 2) * x * y;
    println(areaX);
}
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5.2.5: HEIGHT IN METERS
//  CONTROL VALUES = CONVERSION FACTORS
    var INCHES_TO_CM = 2.54;
    var CM_TO_METERS = 0.01
    var FEET_TO_INCHES = 12;
// INPUTS HEIGHT -> METERS IN (FEET,INCHES)
function start(){
    convertHeightToMeters(5,10);
    convertHeightToMeters(4,2);
}
// USES CONSTANTS AS CONVERSION FACTORS
function convertHeightToMeters(x,y){
    var feetToCM = x * FEET_TO_INCHES * INCHES_TO_CM * CM_TO_METERS;
    var inchesToCM = y * INCHES_TO_CM * CM_TO_METERS;
    var heightInMeters = feetToCM + inchesToCM;
    println(heightInMeters);
}
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5.3.4: HORIZONTAL LINES
function start(){
    horizontalLine(100,200);
    horizontalLine(200,100);
    horizontalLine(300,50);
}

function horizontalLine(x,y){
    var line = new Line(0,x,y,x);
    add(line);
}

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5.3.5: GRAPHICS STOP LIGHT

var LIGHT_RADIUS = 35;
var STOPLIGHT_WIDTH = 120;
var STOPLIGHT_HEIGHT = 350;
var BUFFER = 100;
var GRAY_COLOR = "#737071";
var centerX = getWidth() / 2;
var centerY = getHeight() / 2;

function start(){
    var rect = new Rectangle(STOPLIGHT_WIDTH, STOPLIGHT_HEIGHT);
    rect.setPosition(centerX - STOPLIGHT_WIDTH / 2, centerY - STOPLIGHT_HEIGHT / 2);
    rect.setColor(GRAY_COLOR);
    add(rect);
    drawCircle(Color.red, centerY - BUFFER);
    drawCircle(Color.yellow, centerY);
    drawCircle(Color.green, centerY + BUFFER);
}

function drawCircle(color,y){
    var circle = new Circle(LIGHT_RADIUS);
    circle.setPosition(centerX,y);
    circle.setColor(color);
    add(circle);
}

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5.3.6: POOL TABLE
var POOL_BALL_RADIUS = 40;
var POOL_BALL_FONT = "30pt Arial";

function start(){
    drawPoolBall(Color.orange, 5, 100, 100);
    drawPoolBall(Color.red, 3, 200, 275);
    drawPoolBall(Color.green, 6, 150, 75);
    drawPoolBall(Color.black, 8, 75, 300);
    drawPoolBall(Color.blue, 2, 250, 50);
}
// DRAWS A POOL BALL
function drawPoolBall(color, num, x, y){
    var ball = new Circle(POOL_BALL_RADIUS);
    ball.setColor(color);
    ball.setPosition(x,y);
    add(ball);
    var number = new Text(num);
    number.setFont(POOL_BALL_FONT);
    number.setColor(Color.white);
    number.setPosition(x - (ball.getWidth() / 8), y + (ball.getHeight() / 8));
    add(number);
}
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function start(){
    square(5);
    square(10);
}

function square(x){
    var numSquare = x * x;
    println(numSquare);
    return(numSquare);
}
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5.4.5: QUADRUPLE WITH RETURN VALUES
function start(){
    quadruple(5);
    quadruple(10);
}

function quadruple(x){
    var numQuad = x * 4;
    println(numQuad);
    return(numQuad);
    return(numQuad);
}
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5.5.4: IS IT EVEN?
var SENTINEL = 0;
function start(){
    while(true){
        var input = readInt("Number: ");
        if(input == SENTINEL){
            println("DONE!");
            break;
        }
        if(isEven(input)){
            println("Even");
        }else{
            println("Odd");
        }
    }
}

function isEven(x){
    return(x % 2 == 0);
}
========================

5.5.5: MIN
function start(){
    min(1,2);
    min(9000,9001);
}

function min(x,y){
    if(x < y){
        println("MINIMUM VALUE IS: " + x);
        return(x);
    }else if(y < x){
        println("MINIMUM VALUE IS: " + y);
        return(y);
    }else if(x == y){
        println("MINIMUM VALUE IS: " + x);
        return(x);
    }
}

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MODULE VI: LOCAL VARIABLES

EXAMPLE:

// LOCAL VARIABLES ARE CALLED WITHIN A FUNCTION INSTEAD OF CALLING THE VARIABLE FOR THE WHOLE PROGRAM.

function start(){
    var name = readLine("WHAT IS YOUR NAME? ");
    println("HELLO, " + name);
}

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MODULE VII: JAVASCRIPT VS KAREL

5.7.4: MAKE KAREL TURN RIGHT
function turnRight(){
    karel.rotate(90);
    if(direction == EAST){
        direction == SOUTH;
    }else if(direction == WEST){
        direction == NORTH;
    }else if(direction == SOUTH){
        direction == WEST;
    }else if(direction == NORTH){
        direction == EAST;
    }else{
        println("ERROR: KAREL'S DIRECTION IS NOT PROPERLY SET!");
    }
}

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5.7.5: MAKING KAREL MOVE
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5.8.1: GHOSTS
https://ibb.co/pW5PYBM
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