Oop Game Programming Concept

Hello!
I am
Satriyo Aji Nugroho
You can find me at:
acttogreen@Gmail.com
Or contact me :
+62895371034583

But First,
Lets Learn Game Mechanic

Ada 4 jenis Style Programming :
oProcedural
oObject Oriented
oFunctional
oModular

“Pemrograman berorientasi objek yang
berfokus pada pemecahan dan perilaku
objek yang dipelajari”

3 konsep dasar Object Oriented
✖Encapsulation
✖Abstraction
✖Inheritance

Breakdown & Implementation
(Asteroids, Tetris & Pacman)

Cohesion
“Grouping together code that
contributes to a single task”

/**
* Class Pesawat
*/
public class Ship {
/**
* Function – performs the behavior (task) of turning the Ship
*/
public void rotate() {
// Code that turns the ship
}
/**
* Function – performs the behavior (task) of moving the Ship
*/
public void move() {
// Code that moves the ship
}
/**
* Function – performs the behavior (task) of firing the Ship's gun
*/
public void fire() {
// Code that makes the ship fire a bullet
}
}
CODE IMPLEMENTATION
(ASTEROIDS)

CODE IMPLEMENTATION
(TETRIS)
/**
* Class Tetris
*/
public class Tetromino {
/**
* Function – update a Tetromino's position
*/
public void fall() {
// Code that updates the Tetromino's position
}
/**
* Function - move a Tetromino
*/
// Code that moves the Tetromino sideways
}
/**
* Function – rotate a Tetromino
*/
// Code that rotates the Tetromino by 90 degrees
}
}

CODE IMPLEMENTATION
(PACMAN)
/**
* Class Hantu
*/
public class Ghost {
/**
* Function – moves the Ghost
*/
// Code that moves the ghost in the current direction
}
/**
* Function - change Ghost direction
*/
public void changeDirection() {
// Code that changes the Ghost's direction
}
/**
* Function – change Ghost speed
*/
public void changeSpeed() {
// Code that changes the Ghost's speed
}
/**
* Function – change Ghost color
*/
public void changeColor() {
// Code that changes the Ghost's color
}
/**
* Function – change Ghost state
*/
public void changeState() {
// Code that changes the Ghost's state
// This function also will call the three functions of changeDirection, changeSpeed, and changeColor
}
}

Encapsulation
“Encapsulation is the principle of
information hiding.”

CODE IMPLEMENTATION
(Encapsulation Class
PACMAN)
public class Ghost {
// Ghost states
private String color;
private String name;
private Boolean isEatable;
private Vector direction;
private int speed;
Pada Class Ghost terdapat method Move ( ),
ChangeSpeed ( ),dst
Proses encapsulation akan membundle variable yang
diperlukan menjadi satu class, sehingga harus memakai
acces modifier “private” yang nantinya akan dipanggil
pada method yang diinginkan.

Abstraction
“Abstraction is the principle of
generalization”

CODE IMPLEMENTATION
(Abstract Class)
/**
* Abstract class for moving
*/
abstract class Movable {
public float velocityX;
public float velocityY;
public float positionX;
public float positionY;
/**
* Function – performs the behavior (task) of moving the Ship
*/
positionX += velocityX;
positionY += velocityY;
}
}
Pengunaan Abstraction dipakai jika sebuah objek memiliki keserupaan
dengan objek lainnya, sebagai contoh pada game Asteroids, class
ship,enemy dan asteroid memiliki satu method yang sama yaitu, Move ()
berisi variable pergerakan velocity X,Y & Pos X,Y sehingga hanya
memerlukan satu class sebagai refrence

Inheritance
“Inheritance is the principle of class
hierarchy”

CODE IMPLEMENTATION
(Inheritance)
Inheritance merupakan konsep OOP dengan memakai sistem hirarki.
Pada Class sebelumnya, sudah terdapat Abstract class Movable
(Superclass) yang dipanggil pada class Ship (Subclass) nantinya class
Ship akan memakai method pada abstract class pada class Movable.
/**
* The Ship Class
*/
public class Ship extends Movable {
/**
* Function to rotate the ship
*/
// Code that turns the ship
}
/**
* Function to fire
*/
public void fire() {
// Code to fire
}
}

Start Pitching
&
Create Your own Game

Oop Game Programming Concept

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