Disclaimer: I'm a bit new to stack exchange and programming so go easy :)
I'm currently working on a small text-based Oregon Trail type game and I'd like to add a typewriter effect to slow down the pacing of the game. The main class that actually runs the game implements runnable and the text is rendered using g.drawString() in the render method. I've tried rendering each character separately using a for loop and thread.sleep() but it just appeared on the screen all at once. Here is the code I used for that:
for(int i = 1; i <= events.result.length(); i++) {
try{
thread.sleep(millisPer);//0.5s pause between characters
} catch(InterruptedException ex) {
Thread.currentThread().interrupt();
}
g.drawString(events.result.substring(0, i), 300, 300);
}
I also tried getting the system time like this:
package mains;
import java.awt.Graphics;
public class Typewriter{
long stallTime = 0;
public void typeResult(Graphics g, String result) {
int spacing = 300;
for(int i = 0; i < result.length(); i++) {
if(getElapsedTime() > 1) {
g.drawString(result.substring(i, i+1), spacing, 300);
spacing+=5;
}
}
}
public int getElapsedTime(){
return (int)((System.currentTimeMillis()-stallTime)/1000);
}
public void setStallTime(){
stallTime=System.currentTimeMillis();
}
}
This had the same effect. Are there any other means of adding a delay that work with my class? Thanks for the help. The full game class is below:
package mains;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.image.BufferStrategy;
import java.awt.image.BufferedImage;
public class Game extends Canvas implements Runnable{
private static final long serialVersionUID = -6672699999969016018L;
private boolean isRunning = false;
private Thread thread;
private GameState state;
Window window = new Window(1000,800,"Prototype", this);
EventManager events = new EventManager();
BufferedImage image = ImageLoader.loadImage("/textures/Syria.png");
Typewriter typewriter = new Typewriter();
public Game() {
this.addMouseListener(new MouseInput(this));
this.addMouseListener(window);
state = state.MainMenu;
start();
}
public static void main(String args[]) {
new Game();
}
private void start() {
isRunning = true;
thread = new Thread(this);
thread.start();
}
private void stop() {
isRunning = false;
try {
thread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public GameState getGameState(){
return state;
}
public void setGameState(GameState state){
this.state = state;
}
public void run() {
//game loop - lifted from Zach from RealTutsGML
this.requestFocus();
long lastTime = System.nanoTime();
double amountOfTicks = 60.0;
double ns = 100000000 / amountOfTicks;
double delta = 0;
long timer = System.currentTimeMillis();
int frames = 0;
while(isRunning) {
long now = System.nanoTime();
delta += (now - lastTime) / ns;
lastTime = now;
while(delta >= 1) {
tick();
//updates++;
delta--;
}
render();
frames++;
if(System.currentTimeMillis() - timer > 1000) {
timer += 1000;
frames = 0;
//updates = 0;
}
}
stop();
}
private void tick() {
events.tick();
if(events.distance >= 100) {
state = state.Escape;
}
if(events.getHealth() <= 0) {
state = state.Death;
}
}
private void render() {
BufferStrategy bs = this.getBufferStrategy();
if(bs == null) {
this.createBufferStrategy(3);
return;
}
Graphics g = bs.getDrawGraphics();
//ANYTHING BETWEEN THIS LINE AND g.dispose() IS RENDERED
if(state == state.MainMenu) {
g.drawImage(image,-100,0, null);
g.setColor(Color.red);
g.fillRect(100, 700, 50, 50);
}
if(state == state.Escape) {
g.setColor(Color.blue);
g.fillRect(0, 0, 1000, 800);
g.setColor(Color.white);
g.drawString("YOU ESCAPED! :)", 500,500);
}
if(state == state.Death) {
g.setColor(Color.black);
g.fillRect(0, 0, 1000, 800);
g.drawString("YOU DIED! :(", 500,500);
}
if(state == state.CharScreen) {
g.setColor(Color.black);
g.fillRect(0,0,1000,1000);
g.setColor(Color.blue);
g.fillRect(200, 700, 50, 50);
g.setColor(Color.yellow);
g.fillRect(700, 200, 100, 50);
g.setColor(Color.green);
g.fillRect(700, 300, 100, 50);
g.setColor(Color.red);
g.fillRect(700, 400, 100, 50);
g.setColor(Color.orange);
g.fillRect(700, 500, 100, 50);
g.setColor(Color.white);
g.drawString("Day " + events.getDays(), 300, 100);
g.drawString("Time " + events.getHours(), 300, 200);
typewriter.typeResult(g, events.result);
//g.drawString(events.result, 300, 300);
g.drawString("Distance: " + events.distance, 500, 200);
g.drawString("Health: " + events.getHealth(), 300, 400);
g.drawString("Sustenance: " + events.getSustenance(), 300, 500);
g.drawString("Sanity: " + events.getSanity(), 300, 600);
g.drawString("Exhaustion: " + events.getExhaustion(), 300, 700);
}
g.dispose();
bs.show();
}
}
