107 lines
3 KiB
Java
107 lines
3 KiB
Java
package game.gui;
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import java.awt.image.BufferedImage;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import org.lwjgl.opengl.GL11;
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import game.log.Log;
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import game.renderer.GlState;
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import game.renderer.texture.TextureUtil;
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import game.util.FileUtils;
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public class Font {
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public static final FontChar[] SIZES = new FontChar[256];
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public static final int XGLYPH = 12;
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public static final int YGLYPH = 18;
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private static int texture;
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public static void bindTexture() {
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GlState.bindTexture(texture);
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}
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private static int stride(int width, int height, int x, int y, int c) {
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return ((c & 15) * width + x) + (((c >> 4) & 15) * height + y) * (width << 4); // << 2;
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}
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private static byte specialChar(int width, int ch) {
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return (byte)((ch == Log.CHR_UNK) ? width : ((ch == Log.CHR_SPC) ? (width / 6) : 127));
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}
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private static void calculate(int[] data, FontChar[] glyphs, int width, int height, int page) {
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int off;
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for(int z = 0; z < 256; z++) {
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byte s, t, u, v;
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if((u = specialChar(width, (page << 8) + z)) != 127) {
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s = t = 0;
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v = (byte)(((int)u) * height / width);
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if(((page << 8) + z) != Log.CHR_UNK) {
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for(int x = 0; x < width; x++) {
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for(int y = 0; y < height; y++) {
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off = stride(width, height, x, y, z);
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data[off/*+3*/] = 0;
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}
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}
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}
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glyphs[z] = new FontChar(s, t, u, v);
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continue;
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}
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s = t = 127;
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u = v = 0;
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for(int x = 0; x < width; x++) {
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for(int y = 0; y < height; y++) {
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off = stride(width, height, x, y, z);
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if((data[off/*+3*/] & 0xff000000) != 0) {
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s = x < s ? (byte)x : s;
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t = y < t ? (byte)y : t;
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u = x > u ? (byte)x : u;
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v = y > v ? (byte)y : v;
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}
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}
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}
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if(s == 127 && t == 127 && u == 0 && v == 0) {
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s = t = 0;
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}
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else {
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u += 1;
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v += 1;
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}
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glyphs[z] = new FontChar(s, t, u, v);
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}
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}
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public static void load() {
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BufferedImage img = null;
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try {
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img = TextureUtil.readImage(FileUtils.getResource("textures/font.png"));
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}
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catch(FileNotFoundException e) {
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Log.IO.error("Konnte Font-Textur nicht laden: Datei nicht vorhanden");
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}
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catch(IOException e) {
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Log.IO.error(e, "Konnte Font-Textur nicht laden");
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}
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if(img != null && (img.getWidth() != XGLYPH * 16 || img.getHeight() != YGLYPH * 16)) {
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Log.IO.error("Konnte Font-Textur nicht laden: Größe ist nicht %dx%d", XGLYPH * 16, YGLYPH * 16);
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img = null;
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}
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if(img == null)
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throw new IllegalStateException("Konnte erforderliche Schriftart nicht laden");
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int[] data = new int[XGLYPH * 16 * YGLYPH * 16];
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img.getRGB(0, 0, XGLYPH * 16, YGLYPH * 16, data, 0, XGLYPH * 16);
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calculate(data, SIZES, XGLYPH, YGLYPH, 0);
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texture = GL11.glGenTextures();
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TextureUtil.uploadImage(texture, img);
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Log.RENDER.debug("Font-Textur wurde mit ID #%d geladen", texture);
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}
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public static void unload() {
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if(texture != 0) {
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GL11.glDeleteTextures(texture);
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Log.RENDER.debug("Font-Textur mit ID #%d wurde gelöscht", texture);
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texture = 0;
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}
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}
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}
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