feat: basic freecam module

allows to fly and cancels some packets but still can't noclip

src/main/java/ftbsc/bscv/module/self/Freecam.java

@@ -0,0 +1,60 @@
+package ftbsc.bscv.module.self;
+
+import com.mojang.brigadier.CommandDispatcher;
+import com.mojang.brigadier.arguments.BoolArgumentType;
+
+import ftbsc.bscv.BoSCoVicino;
+import ftbsc.bscv.events.PacketEvent;
+import ftbsc.bscv.module.QuickModule;
+import net.minecraft.command.CommandSource;
+import net.minecraft.network.play.client.CPlayerPacket;
+import net.minecraft.util.math.vector.Vector3d;
+import net.minecraft.world.GameType;
+import net.minecraftforge.common.ForgeConfigSpec;
+import net.minecraftforge.event.TickEvent;
+import net.minecraftforge.eventbus.api.SubscribeEvent;
+
+public class Freecam extends QuickModule {
+
+	public final ForgeConfigSpec.ConfigValue<Boolean> log;
+
+	public Freecam(ForgeConfigSpec.Builder builder, CommandDispatcher<CommandSource> dispatcher) {
+		super("Freecam", Group.SELF, UNBOUND, builder, dispatcher);
+
+		this.log = this.option(
+			"log", "log canceled packets", false,
+			BoolArgumentType.bool(), Boolean.class,
+			builder, dispatcher
+		);
+	}
+
+	private Vector3d prev_pos = new Vector3d(0.0, 0.0, 0.0);
+
+	@SubscribeEvent
+	public void onPacket(PacketEvent event) {
+		if (BoSCoVicino.minecraft.player == null) return;
+		if (event.outgoing && event.packet instanceof CPlayerPacket) { // TODO must ignore more packets than just this
+			if (this.log.get()) {
+				BoSCoVicino.log(String.format("[X] %s", event.packet.getClass().getName()));
+			}
+			event.setCanceled(true);
+		}
+	}
+
+	@Override
+	protected void onEnabled() {
+		if (BoSCoVicino.minecraft.player != null) {
+			this.prev_pos = BoSCoVicino.minecraft.player.position();
+			BoSCoVicino.minecraft.gameMode.setLocalMode(GameType.SPECTATOR);
+		}
+	}
+
+	@Override
+	protected void onDisabled() {
+		if (BoSCoVicino.minecraft.player != null) {
+			BoSCoVicino.minecraft.gameMode.setLocalMode(GameType.SURVIVAL);
+			BoSCoVicino.minecraft.player.setPos(this.prev_pos.x, this.prev_pos.y, this.prev_pos.z);
+		}
+	}
+
+}