From 9eab4544b0040417cd7a51a5be300b9ac940871f Mon Sep 17 00:00:00 2001
From: alemi <me@alemi.dev>
Date: Sun, 12 Mar 2023 02:14:33 +0100
Subject: feat: new module UpdateESP

---
 .../java/ftbsc/bscv/modules/vision/UpdateESP.java  | 150 +++++++++++++++++++++
 1 file changed, 150 insertions(+)
 create mode 100644 src/main/java/ftbsc/bscv/modules/vision/UpdateESP.java

diff --git a/src/main/java/ftbsc/bscv/modules/vision/UpdateESP.java b/src/main/java/ftbsc/bscv/modules/vision/UpdateESP.java
new file mode 100644
index 0000000..6db66f1
--- /dev/null
+++ b/src/main/java/ftbsc/bscv/modules/vision/UpdateESP.java
@@ -0,0 +1,150 @@
+package ftbsc.bscv.modules.vision;
+
+import java.util.Map.Entry;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentLinkedQueue;
+
+import org.lwjgl.opengl.GL11;
+
+import com.google.auto.service.AutoService;
+import com.mojang.blaze3d.matrix.MatrixStack;
+import com.mojang.blaze3d.systems.RenderSystem;
+
+import ftbsc.bscv.api.ILoadable;
+import ftbsc.bscv.modules.QuickModule;
+import ftbsc.bscv.patches.PacketPatch.PacketEvent;
+import ftbsc.bscv.tools.Setting;
+import net.minecraft.client.renderer.BufferBuilder;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.client.renderer.WorldRenderer;
+import net.minecraft.client.renderer.WorldVertexBufferUploader;
+import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
+import net.minecraft.network.play.server.SChangeBlockPacket;
+import net.minecraft.network.play.server.SMultiBlockChangePacket;
+import net.minecraft.util.Tuple;
+import net.minecraft.util.math.vector.Vector3d;
+import net.minecraft.util.math.vector.Vector3i;
+import net.minecraftforge.client.event.RenderWorldLastEvent;
+import net.minecraftforge.common.ForgeConfigSpec;
+import net.minecraftforge.event.TickEvent;
+import net.minecraftforge.event.TickEvent.Phase;
+import net.minecraftforge.eventbus.api.SubscribeEvent;
+
+@AutoService(ILoadable.class)
+public class UpdateESP extends QuickModule {
+
+	public final ForgeConfigSpec.ConfigValue<Integer> duration;
+	public final ForgeConfigSpec.ConfigValue<Double> alpha;
+	public final ForgeConfigSpec.ConfigValue<Double> width;
+	public final ForgeConfigSpec.ConfigValue<Boolean> fade;
+
+	public UpdateESP() {
+		super();
+
+		this.updates = new ConcurrentLinkedQueue<>();
+
+		this.duration = Setting.Number.builder()
+			.min(0)
+			.fallback(250)
+			.name("duration")
+			.comment("how long to show block updates")
+			.build(this);
+
+		this.alpha = Setting.Decimal.builder()
+			.min(0.)
+			.max(1.)
+			.fallback(.25)
+			.name("alpha")
+			.comment("alpha channel value for highlights")
+			.build(this);
+
+		this.width = Setting.Decimal.builder()
+			.min(0.)
+			.fallback(1.)
+			.name("width")
+			.comment("line width for highlights")
+			.build(this);
+
+		this.fade = Setting.Bool.builder()
+			.fallback(true)
+			.name("fade")
+			.comment("gradually decrease alpha to disappear smoothly")
+			.build(this);
+	}
+
+	private final ConcurrentLinkedQueue<Tuple<Vector3i, Long>> updates;
+
+	private float getAlpha(float multiplier, long insert, long now, long duration) {
+		long age = now - insert;
+		if (age > duration) return 0.f;
+		return multiplier * (1.f - ((float) age / (float) duration));
+	}
+
+	@SubscribeEvent
+	public void onRenderWorld(RenderWorldLastEvent event) {
+		RenderSystem.pushMatrix(); // ??
+		
+		RenderSystem.enableBlend();
+		RenderSystem.disableTexture();
+		RenderSystem.disableDepthTest();
+		RenderSystem.lineWidth(this.width.get().floatValue());
+
+		Vector3d projectedView = MC.gameRenderer.getMainCamera().getPosition().scale(-1);
+		MatrixStack stack = event.getMatrixStack();
+		stack.pushPose(); // ??
+		stack.translate(projectedView.x(), projectedView.y(), projectedView.z());
+
+		BufferBuilder builder = Tessellator.getInstance().getBuilder();
+		builder.begin(GL11.GL_LINES, DefaultVertexFormats.POSITION_COLOR);
+
+		long time = System.currentTimeMillis();
+		long duration = this.duration.get();
+		float multiplier = this.alpha.get().floatValue();
+		boolean fade = this.fade.get();
+
+		for (Tuple<Vector3i, Long> entry : this.updates) {
+			Vector3i pos = entry.getA();
+			WorldRenderer.renderLineBox(
+				stack, builder,
+				pos.getX(), pos.getY(), pos.getZ(), pos.getX() + 1, pos.getY() + 1, pos.getZ() + 1,
+				1.f, 1.f, 1.f, fade ? this.getAlpha(multiplier, entry.getB(), time, duration) : multiplier
+			);
+		}
+
+		builder.end();
+		WorldVertexBufferUploader.end(builder);
+		stack.popPose(); // ??
+
+		RenderSystem.lineWidth(1.f);
+		RenderSystem.enableTexture();
+		RenderSystem.enableDepthTest();
+		RenderSystem.disableBlend();
+		RenderSystem.enableCull();
+		
+		RenderSystem.popMatrix(); // ??
+	}
+
+	@SubscribeEvent
+	public void onTick(TickEvent.ClientTickEvent event) {
+		if (event.phase == Phase.END) return;
+		long time = System.currentTimeMillis();
+		long duration = this.duration.get();
+		while (this.updates.peek() != null && time - this.updates.peek().getB() > duration) {
+			this.updates.poll();
+		}
+	}
+
+
+	@SubscribeEvent
+	public void onPacket(PacketEvent.Incoming event) {
+		if (event.packet instanceof SChangeBlockPacket) {
+			SChangeBlockPacket packet = (SChangeBlockPacket) event.packet;
+			this.updates.add(new Tuple<>(packet.getPos(), System.currentTimeMillis()));
+		}
+
+		if (event.packet instanceof SMultiBlockChangePacket) {
+			SMultiBlockChangePacket packet = (SMultiBlockChangePacket) event.packet;
+			packet.runUpdates( (pos, state) -> this.updates.add(new Tuple<>(pos, System.currentTimeMillis())) );
+		}
+	}
+}
-- 
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