Interaksi Obyek Pemrograman Game Eko Prasetyo Teknik Informatika Univ. Pembangunan Nasional Veteran Jawa Timur 2012

Tabrakan Obyek Skenario: Peluru yang ditembakkan, ketika mengenai obyek yang lain (misal: tikus), maka tikus akan mati, dan skor ditambah. Algoritma solusi: if (we have collided with a gun) { remove the mouse from the world; show an explosion; //Optional show final score (game over); }

Class Actor protected List getIntersectingObjects (Class cls)  Return all the objects that intersect this object. protected Actor getOneIntersectingObject (Class cls)  Return an object that intersects this object. protected List getObjectsInRange(int r, Class cls)  Return all objects within range 'r' around this object. Catatan: Untuk List, harus menambahkan library: import java.util.List; getOneIntersectingObject getObjectsInRange

Game: Menembak Tikus Skenario: Peluru yang ditembakkan, ketika mengenai obyek yang lain (misal: tikus), maka tikus akan mati, dan skor ditambah.

Cara 1 Menggunakan method: protected Actor getOneIntersectingObject (Class cls) Kelas Tikus import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo) public class Tikus extends Actor { public void act() { // Add your action code here. kenaPeluru(); } public void kenaPeluru() { Peluru p = (Peluru) getOneIntersectingObject(Peluru.class); if (p != null) { Arena a = (Arena) getWorld(); a.updateGambar(); getWorld().addObject(new Tikus(), Greenfoot.getRandomNumber(100) + 400,Greenfoot.getRandomNumber(400)); getWorld().removeObject(this);

Kelas Peluru Cara 1 import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo) public class Peluru extends Actor { public void act() { // Add your action code here. lihatTikus(); //gerak(); } public void gerak() { setLocation(getX()+4,getY()); if (getX() >= getWorld().getWidth() - 2) { getWorld().removeObject(this); public void lihatTikus() { Tikus a = (Tikus) getOneIntersectingObject(Tikus.class); if (a != null) { } else { gerak();

Cara 2 Menggunakan method: protected List getObjectsInRange(int r, Class cls) Kelas Tikus import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo) public class Tikus extends Actor { public void act() { // Add your action code here. } public void matikan() { Arena a = (Arena) getWorld(); a.updateGambar(); getWorld().addObject(new Tikus(), Greenfoot.getRandomNumber(100) + 400,Greenfoot.getRandomNumber(400)); getWorld().removeObject(this);

Kelas Peluru Cara 2 import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo) import java.util.List; public class Peluru extends Actor { public void act() { // Add your action code here. lihatTikus(); gerak(); } public void gerak() { setLocation(getX()+4,getY()); if (getX() >= getWorld().getWidth() - 2) { getWorld().removeObject(this); public void lihatTikus() { int range = getImage().getWidth() / 2; List<Tikus> tikus = getObjectsInRange(range, Tikus.class); for (Tikus a : tikus) { a.matikan();

Saatnya anda membuat game Tugas 2 Saatnya anda membuat game