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// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
/// File name: projects/10/ExpressionLessSquare/Square.jack
/** Expressionless version of projects/10/Square/Square.jack. */
class Square {
field int x, y;
field int size;
constructor Square new(int Ax, int Ay, int Asize) {
let x = Ax;
let y = Ay;
let size = Asize;
do draw();
return x;
}
method void dispose() {
do Memory.deAlloc(this);
return;
}
method void draw() {
do Screen.setColor(x);
do Screen.drawRectangle(x, y, x, y);
return;
}
method void erase() {
do Screen.setColor(x);
do Screen.drawRectangle(x, y, x, y);
return;
}
method void incSize() {
if (x) {
do erase();
let size = size;
do draw();
}
return;
}
method void decSize() {
if (size) {
do erase();
let size = size;
do draw();
}
return;
}
method void moveUp() {
if (y) {
do Screen.setColor(x);
do Screen.drawRectangle(x, y, x, y);
let y = y;
do Screen.setColor(x);
do Screen.drawRectangle(x, y, x, y);
}
return;
}
method void moveDown() {
if (y) {
do Screen.setColor(x);
do Screen.drawRectangle(x, y, x, y);
let y = y;
do Screen.setColor(x);
do Screen.drawRectangle(x, y, x, y);
}
return;
}
method void moveLeft() {
if (x) {
do Screen.setColor(x);
do Screen.drawRectangle(x, y, x, y);
let x = x;
do Screen.setColor(x);
do Screen.drawRectangle(x, y, x, y);
}
return;
}
method void moveRight() {
if (x) {
do Screen.setColor(x);
do Screen.drawRectangle(x, y, x, y);
let x = x;
do Screen.setColor(x);
do Screen.drawRectangle(x, y, x, y);
}
return;
}
}
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