added FontTTF

Test.java

@@ -8,9 +8,10 @@ public class Test {
 		var tex2 = window.loadTexture("C:\\art\\pixel stuff.png");
 		var tileset = window.loadTextureArray("C:\\stream\\coding\\rlc\\tilemap.png", new Vec2i(16, 16));
 		var font = window.loadFontTileset("EGA8x14.png");
+		var font2 = window.loadFontTTF("fonts\\LiberationSans-Regular.ttf", 16*8.f);
 		//img.drawImage(img2, Vec2i.ZERO);
 		var tex = window.loadTexture(img);
-		window.setDebug(false);
+		window.setDebug(true);
 
 		while(!window.shouldClose()) {
 			window.tick();
@@ -30,6 +31,7 @@ public class Test {
 			);
 
 			renderContext.drawString(new Vec2i(100, 100), "hello world mew", font);
+			renderContext.drawString(new Vec2i(710, 140), "hello world mew", font2);
 			window.renderFinish(renderContext);
 		}
 	}

com/danitheskunk/skunkworks/BaseRenderContext.java

@@ -17,8 +17,9 @@ abstract class BaseRenderContext implements IRenderContext {
 		for(int i = 0; i < string.length(); ++i) {
 			int ch = buf.get(i);
 			var tex = font.getTexture(ch);
-			drawTextureRectangle(new Recti(new Vec2i(x, y), tex.getSize()), tex);
-			x += font.getCharWidth(ch);
+			var off = font.getOffset(ch);
+			drawTextureRectangle(new Recti(Vec2i.add(new Vec2i(x, y), off), tex.getSize()), tex);
+			x += font.getXAdvance(ch);
 		}
 	}
 }

com/danitheskunk/skunkworks/BaseWindow.java

@@ -1,5 +1,8 @@
 package com.danitheskunk.skunkworks;
 
+import org.lwjgl.stb.STBTTFontinfo;
+import static org.lwjgl.stb.STBTruetype.*;
+
 abstract class BaseWindow implements IWindow {
 	protected final Engine engine;
 
@@ -7,6 +10,12 @@ abstract class BaseWindow implements IWindow {
 		this.engine = engine;
 	}
 
+	@Override
+	public Engine getEngine() {
+		return engine;
+	}
+
+	@Override
 	public IFont loadFontTileset(String path) {
 		var img = engine.loadImage(path);
 		var charSize = Vec2i.div(img.getSize(), 16);
@@ -14,4 +23,12 @@ abstract class BaseWindow implements IWindow {
 		assert tex.size() == 256;
 		return new FontTileset(tex);
 	}
+
+	@Override
+	public IFont loadFontTTF(String path, float size) {
+		var bytes = engine.loadBytes(path);
+
+		return new FontTTF(bytes, size, this);
+	}
+
 }

com/danitheskunk/skunkworks/FontTTF.java

@@ -0,0 +1,111 @@
+package com.danitheskunk.skunkworks;
+
+import org.lwjgl.BufferUtils;
+import org.lwjgl.stb.STBTTFontinfo;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.HashMap;
+
+import static org.lwjgl.stb.STBTruetype.*;
+import static org.lwjgl.stb.STBTruetype.stbtt_ScaleForPixelHeight;
+
+public class FontTTF implements IFont {
+	HashMap<Integer, Char> chars;
+	int lineHeight;
+	float size;
+	float unscaled_size;
+	STBTTFontinfo info;
+	IWindow window;
+
+	FontTTF(ByteBuffer buffer, float size, IWindow window) {
+		int[] ascent = {0};
+		int[] descent = {0};
+		int[] lineGap = {0};
+
+		this.window = window;
+		this.chars = new HashMap<>();
+		this.info = STBTTFontinfo.create();
+
+		if(!stbtt_InitFont(info, buffer)) {
+			throw new IllegalStateException("Failed to initialize font information.");
+		}
+		//todo: save these
+		stbtt_GetFontVMetrics(info, ascent, descent, lineGap);
+		lineHeight = lineGap[0];
+		this.unscaled_size = size;
+		this.size = stbtt_ScaleForPixelHeight(info, size);
+
+		//precache ascii characters
+		for(int i = 32; i < 128; ++i)
+			cacheChar(i);
+	}
+
+	void cacheChar(int ch) {
+		if(chars.containsKey(ch))
+			return;
+
+		int[] width = {0};
+		int[] height = {0};
+		int[] xoff = {0};
+		int[] yoff = {0};
+		int[] advanceWidth = {0};
+		int[] leftSideBearing = {0};
+		ITexture tex;
+
+		var bufmono = stbtt_GetCodepointBitmap(info, size, size, ch, width, height, xoff, yoff);
+		if(bufmono != null) {
+			var buf = ByteBuffer.allocate(bufmono.remaining() * 4);
+			while(bufmono.hasRemaining()) {
+				var b = bufmono.get();
+				buf.put((byte) 0xff);
+				buf.put((byte) 0xff);
+				buf.put((byte) 0xff);
+				buf.put(b);
+			}
+			buf.flip();
+			tex = window.loadTexture(new Image(buf, new Vec2i(width[0], height[0])));
+		} else {
+			tex = window.loadTexture(new Image(Vec2i.ZERO));
+		}
+		stbtt_GetCodepointHMetrics(info, ch, advanceWidth, leftSideBearing);
+		var c = new Char(tex, (int)(advanceWidth[0] * size), new Vec2i(xoff[0], yoff[0]));
+		chars.put(ch, c);
+	}
+
+	@Override
+	public int getXAdvance(int ch) {
+		cacheChar(ch);
+		return chars.get(ch).advance;
+	}
+
+	@Override
+	public int getLineHeight(int ch) {
+		cacheChar(ch);
+		return lineHeight;
+	}
+
+	@Override
+	public Vec2i getOffset(int ch) {
+		cacheChar(ch);
+		return chars.get(ch).off;
+	}
+
+	@Override
+	public ITexture getTexture(int ch) {
+		cacheChar(ch);
+		return chars.get(ch).tex;
+	}
+
+	private class Char {
+		ITexture tex;
+		int advance;
+		Vec2i off;
+		Char(ITexture tex, int advance, Vec2i off) {
+			this.tex = tex;
+			this.advance = advance;
+			this.off = off;
+		}
+	}
+}

com/danitheskunk/skunkworks/FontTileset.java

@@ -12,7 +12,7 @@ class FontTileset implements IFont {
 	}
 
 	@Override
-	public int getCharWidth(int ch) {
+	public int getXAdvance(int ch) {
 		return charSize.getX();
 	}
 
@@ -21,6 +21,11 @@ class FontTileset implements IFont {
 		return charSize.getY();
 	}
 
+	@Override
+	public Vec2i getOffset(int ch) {
+		return Vec2i.ZERO;
+	}
+
 	@Override
 	public ITexture getTexture(int ch) {
 		if(ch >= 256 || ch < 0) {

com/danitheskunk/skunkworks/IFont.java

@@ -1,7 +1,8 @@
 package com.danitheskunk.skunkworks;
 
 public interface IFont {
-	int getCharWidth(int ch);
 	int getLineHeight(int ch);
+	Vec2i getOffset(int ch);
 	ITexture getTexture(int ch);
+	int getXAdvance(int ch);
 }

com/danitheskunk/skunkworks/IWindow.java

@@ -3,7 +3,9 @@ package com.danitheskunk.skunkworks;
 import java.util.List;
 
 public interface IWindow {
+	Engine getEngine();
 	IFont loadFontTileset(String path);
+	IFont loadFontTTF(String path, float size);
 	ITexture loadTexture(Image image);
 	ITexture loadTexture(String path);
 	List<ITexture> loadTextureArray(Image image, Vec2i tileSize);

com/danitheskunk/skunkworks/Image.java

@@ -9,7 +9,7 @@ public class Image {
 	private final Vec2i size;
 
 	//constructors
-	Image(ByteBuffer buffer) {
+	Image(ByteBuffer buffer) { //png or similar
 		//todo: resource system
 		int[] x = {0}, y = {0}, n = {0};
 		var img = STBImage.stbi_load_from_memory(buffer, x, y, n, 4);
@@ -24,6 +24,12 @@ public class Image {
 		data = new byte[size.getX() * size.getY() * 4];
 	}
 
+	Image(ByteBuffer buffer, Vec2i size) {
+		data = new byte[buffer.remaining()];
+		buffer.get(data);
+		this.size = size;
+	}
+
 	//getters
 	public byte[] getData() {
 		return data;