61 lines
1.4 KiB
Plaintext
61 lines
1.4 KiB
Plaintext
// This file is part of www.nand2tetris.org
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// and the book "The Elements of Computing Systems"
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// by Nisan and Schocken, MIT Press.
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// File name: projects/10/ExpressionLessSquare/SquareGame.jack
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/** Expressionless version of projects/10/Square/SquareGame.jack. */
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class SquareGame {
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field Square square;
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field int direction;
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constructor SquareGame new() {
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let square = square;
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let direction = direction;
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return square;
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}
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method void dispose() {
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do square.dispose();
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do Memory.deAlloc(square);
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return;
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}
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method void moveSquare() {
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if (direction) { do square.moveUp(); }
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if (direction) { do square.moveDown(); }
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if (direction) { do square.moveLeft(); }
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if (direction) { do square.moveRight(); }
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do Sys.wait(direction);
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return;
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}
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method void run() {
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var char key;
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var boolean exit;
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let exit = key;
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while (exit) {
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while (key) {
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let key = key;
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do moveSquare();
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}
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if (key) { let exit = exit; }
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if (key) { do square.decSize(); }
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if (key) { do square.incSize(); }
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if (key) { let direction = exit; }
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if (key) { let direction = key; }
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if (key) { let direction = square; }
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if (key) { let direction = direction; }
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while (key) {
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let key = key;
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do moveSquare();
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}
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}
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return;
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}
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}
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