Video Game Music

Last week, I noticed I haven’t really made that many game music tracks to use for the games I’ve been learning to make on Udemy, so I registered an account on OpenGameArt.org and started contributing.

The idea is to not be too precious about the quality and just try and stay productive for as long as possible. In time I might delete the worse tracks and leave the good ones.

My profile can be found here:

opengameart.org/users/tcarisland

Block Breaker

I’ve been following a course on Udemy on game development with Unity.

Block Breaker is an Arkanoid/Breakout clone.

I changed the script to move the paddle with the arrow keys.

You start the game by clicking on the screen or pressing the spacebar key.

Click here to play.

Tilemaps Day 2

This evening I continued experimenting with designing pixelated tiles at a 32X32 resolution.

My “Hothead” font is available for sale on Creative Fabrica here.

Tilemap

Lately I’ve been following some Udemy courses, particularly the one on 2D game Design with Unity.

In the course I started learning about tilemaps and so I started drawing some of my own today.

For prototyping the tilemap I made a sample scene, which I found out was useful as an illustration photo for one of my new fonts: Hothead.

It’s fun when the different skills come together and supplement each other.

My new font is available on DaFont here.

EAN Barcodes and GEPIR

A simple search application for searching through the Product Open Database can be found here.

I’ve been working more on Code128 by writing programs that both create Code128 from strings directly and making my own Code128 font based on the Wikipedia entry.

Then I became curious about the EAN13 symbology and thought I’d have a go at making an EAN SVG program that takes the first twelve digits of an EAN and creates a barcode in SVG format.

The Java code can be found on github here.

Here’s some of the more interesting functions.

public class EAN {

	HashMap<String, String[]> table = new HashMap<String, String[]>();
	String lgr;
	String number;
	String binaryString;
	int checksum;

	public static String binToDecSeq(String seq) {
		String s = "";
		int sum = 1;
		for(int i = 1; i < seq.length(); i++) {
			if(seq.charAt(i) != seq.charAt(i - 1)) {
				s = s + sum;
				sum = 1;
			} else {
				sum++;
			}
			if(i == seq.length() - 1) {
				s = s + sum;
			}
		}			
		return s;
	}

	public static String createBinaryString(String number, String lgr, HashMap<String, String[]> table) {
		String binaryString = "";
		lgr = lgr + "RRRRRR";
		number = number.substring(1);
		binaryString += "101";
		for(int i = 0; i < number.length(); i++) {
			binaryString += table.get("" + lgr.charAt(i))[Character.getNumericValue(number.charAt(i))];
			if(i == 5)
				binaryString += "01010";
		}
		binaryString += "101";
		return binaryString;
	}
	
	public static HashMap<String, String[]> makeTable() {
		HashMap<String, String[]> table = new HashMap<String, String[]>();
		table.put("L", new String[] { "0001101", "0011001", "0010011", "0111101", "0100011", "0110001",
				"0101111", "0111011", "0110111", "0001011" });
		table.put("R", new String[] { "1110010", "1100110", "1101100", "1000010", "1011100", "1001110",
				"1010000", "1000100", "1001000", "1110100" });
		table.put("G", new String[] { "0100111", "0110011", "0011011", "0100001", "0011101", "0111001",
				"0000101", "0010001", "0001001", "0010111" });
		table.put("LGR", new String[] { "LLLLLLRRRRRR", "LLGLGGRRRRRR", "LLGGLGRRRRRR", "LLGGGLRRRRRR", "LGLLGGRRRRRR",
				"LGGLLGRRRRRR", "LGGGLLRRRRRR", "LGLGLGRRRRRR", "LGLGGLRRRRRR", "LGGLGLRRRRRR" });
		return table;
	}
	
	public static int calculateChecksum(String twelveDigits) {
		int checksum = 0;
		for(int i = 0; i < twelveDigits.length() && i < 12; i++) {
			String s = "" + twelveDigits.charAt(i);
			if(i % 2 == 0) {
				checksum += Integer.parseInt(s) * 1;
			} else {
				checksum += Integer.parseInt(s) * 3;
			}
		}
		checksum = 10 - (checksum % 10);
		return checksum;
	}

}