Replaced old rendering with nanoVG based GUI rendering.

client/src/main/java/nl/andrewl/aos2_client/render/GameRenderer.java

@@ -6,12 +6,9 @@ import nl.andrewl.aos2_client.config.ClientConfig;
 import nl.andrewl.aos2_client.model.ClientPlayer;
 import nl.andrewl.aos2_client.render.chunk.ChunkRenderer;
 import nl.andrewl.aos2_client.render.gui.GuiRenderer;
-import nl.andrewl.aos2_client.render.gui.GUITexture;
 import nl.andrewl.aos2_client.render.model.Model;
 import nl.andrewl.aos_core.model.Team;
 import nl.andrewl.aos_core.model.item.BlockItemStack;
-import nl.andrewl.aos_core.model.item.Gun;
-import nl.andrewl.aos_core.model.item.GunItemStack;
 import nl.andrewl.aos_core.model.item.ItemTypes;
 import org.joml.Matrix3f;
 import org.joml.Matrix4f;
@@ -53,13 +50,6 @@ public class GameRenderer {
 	private Model shotgunModel;
 	private Model flagModel;
 
-	// Standard GUI textures.
-	private GUITexture crosshairTexture;
-	private GUITexture clipTexture;
-	private GUITexture bulletTexture;
-	private GUITexture healthBarRedTexture;
-	private GUITexture healthBarGreenTexture;
-
 	private long windowHandle;
 	private int screenWidth = 800;
 	private int screenHeight = 600;
@@ -134,16 +124,6 @@ public class GameRenderer {
 		} catch (IOException e) {
 			throw new RuntimeException(e);
 		}
-		crosshairTexture = new GUITexture("gui/crosshair.png");
-		clipTexture = new GUITexture("gui/clip.png");
-		bulletTexture = new GUITexture("gui/bullet.png");
-		healthBarRedTexture = new GUITexture("gui/health-red.png");
-		healthBarGreenTexture = new GUITexture("gui/health-green.png");
-		guiRenderer.addTexture("crosshair", crosshairTexture);
-		guiRenderer.addTexture("clip", clipTexture);
-		guiRenderer.addTexture("bullet", bulletTexture);
-		guiRenderer.addTexture("health-red", healthBarRedTexture);
-		guiRenderer.addTexture("health-green", healthBarGreenTexture);
 		log.debug("Initialized GUI renderer.");
 
 		this.modelRenderer = new ModelRenderer();
@@ -183,10 +163,6 @@ public class GameRenderer {
 		if (modelRenderer != null) modelRenderer.setPerspective(data);
 	}
 
-	public Matrix4f getPerspectiveTransform() {
-		return perspectiveTransform;
-	}
-
 	public boolean windowShouldClose() {
 		return glfwWindowShouldClose(windowHandle);
 	}
@@ -290,45 +266,7 @@ public class GameRenderer {
 
 		// GUI rendering
 		guiRenderer.start();
-		guiRenderer.draw(crosshairTexture, crosshairTexture.getIdealScaleX(32, screenWidth), crosshairTexture.getIdealScaleY(32, screenHeight), 0, 0);
-		// If we're holding a gun, draw clip and bullet graphics.
-		if (client.getMyPlayer().getInventory().getSelectedItemStack().getType() instanceof Gun) {
-			GunItemStack stack = (GunItemStack) client.getMyPlayer().getInventory().getSelectedItemStack();
-			for (int i = 0; i < stack.getClipCount(); i++) {
-				guiRenderer.draw(
-						clipTexture,
-						clipTexture.getIdealScaleX(64, screenWidth),
-						clipTexture.getIdealScaleY(clipTexture.getIdealHeight(64), screenHeight),
-						0.90f,
-						-0.90f + (i * 0.15f)
-				);
-			}
-			for (int i = 0; i < stack.getBulletCount(); i++) {
-				guiRenderer.draw(
-						bulletTexture,
-						bulletTexture.getIdealScaleX(16, screenWidth),
-						bulletTexture.getIdealScaleY(bulletTexture.getIdealHeight(16), screenHeight),
-						0.80f - (i * 0.05f),
-						-0.90f
-				);
-			}
-		}
-		// Render the player's health.
-		guiRenderer.draw(
-				healthBarRedTexture,
-				healthBarRedTexture.getIdealScaleX(64, screenWidth),
-				healthBarRedTexture.getIdealScaleY(16, screenHeight),
-				-0.90f,
-				-0.90f
-		);
-		guiRenderer.draw(
-				healthBarGreenTexture,
-				healthBarGreenTexture.getIdealScaleX(64 * client.getMyPlayer().getHealth(), screenWidth),
-				healthBarGreenTexture.getIdealScaleY(16, screenHeight),
-				-0.90f,
-				-0.90f
-		);
-		guiRenderer.drawNvg(screenWidth, screenHeight);
+		guiRenderer.drawNvg(screenWidth, screenHeight, myPlayer);
 		guiRenderer.end();
 
 		glfwSwapBuffers(windowHandle);

client/src/main/java/nl/andrewl/aos2_client/render/gui/GUITexture.java

@@ -1,5 +1,6 @@
 package nl.andrewl.aos2_client.render.gui;
 
+import nl.andrewl.aos_core.FileUtils;
 import nl.andrewl.aos_core.ImageUtils;
 import org.joml.Vector2f;
 
@@ -23,23 +24,21 @@ public class GUITexture {
 	 */
 	private final int height;
 
-	public GUITexture(String location) {
-		try (var in = GUITexture.class.getClassLoader().getResourceAsStream(location)) {
-			if (in == null) throw new IOException("Couldn't load texture image from " + location);
-			BufferedImage img = ImageIO.read(in);
-			width = img.getWidth();
-			height = img.getHeight();
+	public GUITexture(String location) throws IOException {
+		this(FileUtils.readClasspathImage(location));
+	}
 
-			textureId = glGenTextures();
-			glBindTexture(GL_TEXTURE_2D, textureId);
-			glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-			var buf = ImageUtils.decodePng(img);
-			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, buf);
-		} catch (IOException e) {
-			throw new RuntimeException("Failed to load GUI texture.", e);
-		}
+	public GUITexture(BufferedImage img) {
+		width = img.getWidth();
+		height = img.getHeight();
+
+		textureId = glGenTextures();
+		glBindTexture(GL_TEXTURE_2D, textureId);
+		glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+		var buf = ImageUtils.decodePng(img);
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, buf);
 	}
 
 	public int getWidth() {

client/src/main/java/nl/andrewl/aos2_client/render/gui/GuiRenderer.java

@@ -1,8 +1,12 @@
 package nl.andrewl.aos2_client.render.gui;
 
+import nl.andrewl.aos2_client.model.ClientPlayer;
 import nl.andrewl.aos2_client.render.ShaderProgram;
-import nl.andrewl.aos2_client.util.ResourceUtils;
 import nl.andrewl.aos_core.FileUtils;
+import nl.andrewl.aos_core.model.item.BlockItem;
+import nl.andrewl.aos_core.model.item.BlockItemStack;
+import nl.andrewl.aos_core.model.item.Gun;
+import nl.andrewl.aos_core.model.item.GunItemStack;
 import org.joml.Matrix4f;
 import org.lwjgl.BufferUtils;
 import org.lwjgl.nanovg.NVGColor;
@@ -35,6 +39,7 @@ public class GuiRenderer {
 	private static final NVGPaint paintB = NVGPaint.create();
 	private static final NVGPaint paintC = NVGPaint.create();
 
+	// Simple 2d texture quad information.
 	private final int vaoId;
 	private final int vboId;
 	private final int vertexCount;
@@ -85,7 +90,11 @@ public class GuiRenderer {
 	}
 
 	public void loadTexture(String name, String resource) {
-		textures.put(name, new GUITexture(resource));
+		try {
+			textures.put(name, new GUITexture(resource));
+		} catch (IOException e) {
+			throw new RuntimeException(e);
+		}
 	}
 
 	public void addTexture(String name, GUITexture texture) {
@@ -102,10 +111,6 @@ public class GuiRenderer {
 		glUniform1i(textureSamplerUniform, 0);
 	}
 
-	public void draw(String name, float scaleX, float scaleY, float x, float y) {
-		draw(textures.get(name), scaleX, scaleY, x, y);
-	}
-
 	public void draw(GUITexture texture, float scaleX, float scaleY, float x, float y) {
 		glActiveTexture(0);
 		transformMatrix.identity()
@@ -117,13 +122,19 @@ public class GuiRenderer {
 		glDrawArrays(GL_TRIANGLE_STRIP, 0, vertexCount);
 	}
 
-	public void drawNvg(float width, float height) {
+	public void drawNvg(float width, float height, ClientPlayer player) {
 		nvgBeginFrame(vgId, width, height, width / height);
 		nvgSave(vgId);
 		nvgFontSize(vgId, 60f);
 		nvgFontFaceId(vgId, jetbrainsMonoFont);
 		nvgTextAlign(vgId, NVG_ALIGN_LEFT | NVG_ALIGN_TOP);
-		nvgText(vgId, 50, 50, "Hello world!");
+		nvgFillColor(vgId, GuiUtils.rgba(1, 0, 0, 1, colorA));
+		nvgText(vgId, 5, 5, "Hello world!");
+
+		drawCrosshair(width, height);
+		drawHealthBar(width, height, player);
+		drawHeldItemStackInfo(width, height, player);
+
 		nvgRestore(vgId);
 		nvgEndFrame(vgId);
 	}
@@ -145,5 +156,73 @@ public class GuiRenderer {
 		shaderProgram.free();
 	}
 
+	private void drawCrosshair(float w, float h) {
+		float cx = w / 2f;
+		float cy = h / 2f;
 
+		nvgStrokeColor(vgId, GuiUtils.rgba(1, 1, 1, 0.25f, colorA));
+		nvgBeginPath(vgId);
+		nvgMoveTo(vgId, cx - 10, cy);
+		nvgLineTo(vgId, cx + 10, cy);
+		nvgMoveTo(vgId, cx, cy - 10);
+		nvgLineTo(vgId, cx, cy + 10);
+		nvgStroke(vgId);
+	}
+
+	private void drawHealthBar(float w, float h, ClientPlayer player) {
+		nvgFillColor(vgId, GuiUtils.rgba(1, 0, 0, 1, colorA));
+		nvgBeginPath(vgId);
+		nvgRect(vgId, 20, h - 60, 100, 20);
+		nvgFill(vgId);
+		nvgFillColor(vgId, GuiUtils.rgba(0, 1, 0, 1, colorA));
+		nvgBeginPath(vgId);
+		nvgRect(vgId, 20, h - 60, 100 * player.getHealth(), 20);
+		nvgFill(vgId);
+
+		nvgFillColor(vgId, GuiUtils.rgba(1, 1, 1, 1, colorA));
+		nvgFontSize(vgId, 12f);
+		nvgFontFaceId(vgId, jetbrainsMonoFont);
+		nvgTextAlign(vgId, NVG_ALIGN_LEFT | NVG_ALIGN_TOP);
+		nvgText(vgId, 20, h - 30, String.format("%.2f / 1.00 HP", player.getHealth()));
+	}
+
+	private void drawHeldItemStackInfo(float w, float h, ClientPlayer player) {
+		var stack = player.getInventory().getSelectedItemStack();
+		if (stack instanceof GunItemStack g) {
+			drawGunInfo(w, h, g);
+		} else if (stack instanceof BlockItemStack b) {
+			drawBlockInfo(w, h, b);
+		}
+	}
+
+	private void drawGunInfo(float w, float h, GunItemStack stack) {
+		Gun gun = (Gun) stack.getType();
+		float y = h - 50;
+		for (int i = 0; i < gun.getMaxClipCount(); i++) {
+			float alpha = i < stack.getClipCount() ? 0.75f : 0.25f;
+			nvgFillColor(vgId, GuiUtils.rgba(0.2f, 0.2f, 0.1f, alpha, colorA));
+			nvgBeginPath(vgId);
+			nvgRect(vgId, w - 60, y, 40, 30);
+			nvgFill(vgId);
+			y -= 35;
+		}
+		float x = w - 80;
+		for (int i = 0; i < gun.getMaxBulletCount(); i++) {
+			float alpha = i < stack.getBulletCount() ? 0.75f : 0.1f;
+			nvgFillColor(vgId, GuiUtils.rgba(0.7f, 0.3f, 0, alpha, colorA));
+			nvgBeginPath(vgId);
+			nvgRect(vgId, x, h - 60, 10, 40);
+			nvgFill(vgId);
+			x -= 15;
+		}
+	}
+
+	private void drawBlockInfo(float w, float h, BlockItemStack stack) {
+		BlockItem block = (BlockItem) stack.getType();
+		nvgFillColor(vgId, GuiUtils.rgba(1, 1, 1, 0.75f, colorA));
+		nvgFontSize(vgId, 12f);
+		nvgFontFaceId(vgId, jetbrainsMonoFont);
+		nvgTextAlign(vgId, NVG_ALIGN_LEFT | NVG_ALIGN_TOP);
+		nvgText(vgId, w - 140, h - 30, String.format("%d / %d Blocks", stack.getAmount(), block.getMaxAmount()));
+	}
 }

core/src/main/java/nl/andrewl/aos_core/FileUtils.java

@@ -1,5 +1,7 @@
 package nl.andrewl.aos_core;
 
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.ByteBuffer;
@@ -21,6 +23,13 @@ public final class FileUtils {
 		}
 	}
 
+	public static BufferedImage readClasspathImage(String resource) throws IOException {
+		try (var in = FileUtils.class.getClassLoader().getResourceAsStream(resource)) {
+			if (in == null) throw new IOException("Couldn't load texture image from " + resource);
+			return ImageIO.read(in);
+		}
+	}
+
 	/**
 	 * Reads a classpath resource into a directly-allocated byte buffer that
 	 * must be deallocated manually.