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package net.tylermurphy.Minecraft.UI.Text;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import net.tylermurphy.Minecraft.Util.Constants;
import net.tylermurphy.Minecraft.Render.Data.Display;
public class MetaFile {
private static final int PAD_TOP = 0;
private static final int PAD_LEFT = 1;
private static final int PAD_BOTTOM = 2;
private static final int PAD_RIGHT = 3;
private static final int DESIRED_PADDING = 8;
private static final String SPLITTER = " ";
private static final String NUMBER_SEPARATOR = ",";
private double aspectRatio;
private double verticalPerPixelSize;
private double horizontalPerPixelSize;
private double spaceWidth;
private int[] padding;
private int paddingWidth;
private int paddingHeight;
private Map<Integer, Character> metaData = new HashMap<Integer, Character>();
private BufferedReader reader;
private Map<String, String> values = new HashMap<String, String>();
protected MetaFile(String file) {
this.aspectRatio = (double) Display.getWidth() / (double) Display.getHeight();
openFile(file);
loadPaddingData();
loadLineSizes();
int imageWidth = getValueOfVariable("scaleW");
loadCharacterData(imageWidth);
close();
}
protected double getSpaceWidth() {
return spaceWidth;
}
protected Character getCharacter(int ascii) {
return metaData.get(ascii);
}
private boolean processNextLine() {
values.clear();
String line = null;
try {
line = reader.readLine();
} catch (IOException e1) {
}
if (line == null) {
return false;
}
for (String part : line.split(SPLITTER)) {
String[] valuePairs = part.split("=");
if (valuePairs.length == 2) {
values.put(valuePairs[0], valuePairs[1]);
}
}
return true;
}
private int getValueOfVariable(String variable) {
int i = 0;
try {
i = Integer.parseInt(values.get(variable));
}catch(Exception e) {
e.printStackTrace();
}
return i;
}
private int[] getValuesOfVariable(String variable) {
String[] numbers = values.get(variable).split(NUMBER_SEPARATOR);
int[] actualValues = new int[numbers.length];
for (int i = 0; i < actualValues.length; i++) {
actualValues[i] = Integer.parseInt(numbers[i]);
}
return actualValues;
}
private void close() {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
private void openFile(String file) {
try {
FileReader isr = new FileReader(new File(Constants.FNT_LOCATION + file + ".fnt"));
reader = new BufferedReader(isr);
} catch (Exception e) {
e.printStackTrace();
System.err.println("Couldn't read font meta file!");
}
}
private void loadPaddingData() {
processNextLine();
this.padding = getValuesOfVariable("padding");
this.paddingWidth = padding[PAD_LEFT] + padding[PAD_RIGHT];
this.paddingHeight = padding[PAD_TOP] + padding[PAD_BOTTOM];
}
private void loadLineSizes() {
processNextLine();
int lineHeightPixels = getValueOfVariable("lineHeight") - paddingHeight;
verticalPerPixelSize = TextMeshCreator.LINE_HEIGHT / (double) lineHeightPixels;
horizontalPerPixelSize = verticalPerPixelSize / aspectRatio;
}
private void loadCharacterData(int imageWidth) {
processNextLine();
processNextLine();
while (processNextLine()) {
Character c = loadCharacter(imageWidth);
if (c != null) {
metaData.put(c.getId(), c);
}
}
}
private Character loadCharacter(int imageSize) {
int id = getValueOfVariable("id");
if (id == TextMeshCreator.SPACE_ASCII) {
this.spaceWidth = (getValueOfVariable("xadvance") - paddingWidth) * horizontalPerPixelSize;
return null;
}
double xTex = ((double) getValueOfVariable("x") + (padding[PAD_LEFT] - DESIRED_PADDING)) / imageSize;
double yTex = ((double) getValueOfVariable("y") + (padding[PAD_TOP] - DESIRED_PADDING)) / imageSize;
int width = getValueOfVariable("width") - (paddingWidth - (2 * DESIRED_PADDING));
int height = getValueOfVariable("height") - ((paddingHeight) - (2 * DESIRED_PADDING));
double quadWidth = width * horizontalPerPixelSize;
double quadHeight = height * verticalPerPixelSize;
double xTexSize = (double) width / imageSize;
double yTexSize = (double) height / imageSize;
double xOff = (getValueOfVariable("xoffset") + padding[PAD_LEFT] - DESIRED_PADDING) * horizontalPerPixelSize;
double yOff = (getValueOfVariable("yoffset") + (padding[PAD_TOP] - DESIRED_PADDING)) * verticalPerPixelSize;
double xAdvance = (getValueOfVariable("xadvance") - paddingWidth) * horizontalPerPixelSize;
return new Character(id, xTex, yTex, xTexSize, yTexSize, xOff, yOff, quadWidth, quadHeight, xAdvance);
}
}
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