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Menu.jack
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Menu.jack
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/*
Menu utility functions
*/
class Menu {
function void showMainMenu() {
var int line;
do Screen.clearScreen();
let line = 1;
do Menu.print("Conway's Game of Life", line, 2);
let line = line + 1;
do Menu.print("---------------------", line, 2);
let line = line + 3;
do Menu.print("(N) New game", line, 4);
let line = line + 2;
do Menu.print("(E) Examples", line, 4);
let line = line + 2;
do Menu.print("(Q) Quit", line, 4);
do Menu.showFooter();
do Menu.print("John Horton Conway", 18, 37);
do Menu.print(" 1937 - 2020", 19, 37);
do Menu.print("Photo: Hollandse Hoogte/Eyevine", 21, 31);
do JohnConwayImage.draw();
return;
}
function void showNewGameMenu() {
var int line;
do Screen.clearScreen();
let line = 1;
do Menu.print("New game", line, 2);
let line = line + 1;
do Menu.print("--------", line, 2);
let line = line + 3;
do Menu.print("(Arrow keys) Move cursor", line, 4);
let line = line + 2;
do Menu.print("(Space) Toggle cell", line, 4);
let line = line + 2;
do Menu.print("(R) Run", line, 4);
let line = line + 2;
do Menu.print("(Q) Quit", line, 4);
do Menu.showFooter();
do Grid.draw();
return;
}
function void showRunningMenu() {
var int line;
do Screen.clearScreen();
let line = 1;
do Menu.print("Running game", line, 2);
let line = line + 1;
do Menu.print("------------", line, 2);
let line = line + 3;
do Menu.print("(P) Pause or unpause", line, 4);
let line = line + 2;
do Menu.print("(R) Restart", line, 4);
let line = line + 2;
do Menu.print("(Q) Quit", line, 4);
do Menu.showFooter();
do Grid.draw();
return;
}
function void showExamplesMenu() {
var int line;
do Screen.clearScreen();
let line = 1;
do Menu.print("Examples", line, 2);
let line = line + 1;
do Menu.print("--------", line, 2);
let line = line + 3;
do Menu.print("(L) Still lifes", line, 4);
let line = line + 2;
do Menu.print("(O) Oscillators", line, 4);
let line = line + 2;
do Menu.print("(S) Spaceships", line, 4);
let line = line + 2;
do Menu.print("(Q) Quit", line, 4);
do Menu.showFooter();
do Grid.draw();
return;
}
function void showStillLifesMenu() {
var int line;
do Screen.clearScreen();
let line = 1;
do Menu.print("Still lifes", line, 2);
let line = line + 1;
do Menu.print("-----------", line, 2);
let line = line + 3;
do Menu.print("Block / Bee hive / Loaf", line, 4);
let line = line + 2;
do Menu.print("Boat / Tub", line, 4);
let line = line + 3;
do Menu.print("(Q) Quit", line, 4);
do Menu.showFooter();
do Grid.draw();
return;
}
function void showOscillatorsMenu() {
var int line;
do Screen.clearScreen();
let line = 1;
do Menu.print("Oscillators", line, 2);
let line = line + 1;
do Menu.print("-----------", line, 2);
let line = line + 3;
do Menu.print("Blinker / Toad / Beacon", line, 4);
let line = line + 2;
do Menu.print("Penta decathlon / Pulsar", line, 4);
let line = line + 3;
do Menu.print("(P) Pause or unpause", line, 4);
let line = line + 2;
do Menu.print("(Q) Quit", line, 4);
do Menu.showFooter();
do Grid.draw();
return;
}
function void showSpaceshipsMenu() {
var int line;
do Screen.clearScreen();
let line = 1;
do Menu.print("Spaceships", line, 2);
let line = line + 1;
do Menu.print("----------", line, 2);
let line = line + 3;
do Menu.print("(G) Glider", line, 4);
let line = line + 2;
do Menu.print("(L) Light-weight spaceship", line, 4);
let line = line + 2;
do Menu.print("(M) Middle-weight spaceship", line, 4);
let line = line + 2;
do Menu.print("(H) Heavy-weight spaceship", line, 4);
let line = line + 2;
do Menu.print("(P) Pause or unpause", line, 4);
let line = line + 2;
do Menu.print("(Q) Quit", line, 4);
do Menu.showFooter();
do Grid.draw();
return;
}
function void showFooter() {
do Menu.print("Nand to Tetris", 18, 2);
do Menu.print("Assignment 9", 19, 2);
do Menu.print("Jonathan Moffatt", 20, 2);
do Menu.print("July 2020 v0.1", 21, 2);
return;
}
function void showFarewellMessage() {
do Screen.clearScreen();
do Menu.print("Thanks for playing!", 10, 22);
return;
}
function void print(String s, int y, int x) {
do Output.moveCursor(y, x);
do Output.printString(s);
do s.dispose(); // string literals eat up heap space unless we dispose
return;
}
}