feat: finished basic freecam module

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

@@ -2,10 +2,15 @@ package ftbsc.bscv.module.self;
 
 import com.mojang.brigadier.CommandDispatcher;
 import com.mojang.brigadier.arguments.BoolArgumentType;
+import com.mojang.brigadier.arguments.DoubleArgumentType;
 
 import ftbsc.bscv.BoSCoVicino;
 import ftbsc.bscv.events.PacketEvent;
+import ftbsc.bscv.ICommons;
 import ftbsc.bscv.module.QuickModule;
+import ftbsc.bscv.tools.Keyboard;
+import net.minecraft.client.entity.player.RemoteClientPlayerEntity;
+import net.minecraft.client.network.play.NetworkPlayerInfo;
 import net.minecraft.command.CommandSource;
 import net.minecraft.network.play.client.CPlayerPacket;
 import net.minecraft.util.math.vector.Vector3d;
@@ -14,9 +19,16 @@ import net.minecraftforge.common.ForgeConfigSpec;
 import net.minecraftforge.event.TickEvent;
 import net.minecraftforge.eventbus.api.SubscribeEvent;
 
-public class Freecam extends QuickModule {
+public class Freecam extends QuickModule implements ICommons {
 
 	public final ForgeConfigSpec.ConfigValue<Boolean> log;
+	public final ForgeConfigSpec.ConfigValue<Double> speed;
+	public final ForgeConfigSpec.ConfigValue<Boolean> drift;
+
+	private Vector3d prev_pos = new Vector3d(0.0, 0.0, 0.0);
+	private float prev_speed = 0.05f;
+	private GameType prev_gamemode = GameType.SURVIVAL;
+	private MockPlayer mock_player;
 
 	public Freecam(ForgeConfigSpec.Builder builder, CommandDispatcher<CommandSource> dispatcher) {
 		super("Freecam", Group.SELF, UNBOUND, builder, dispatcher);
@@ -26,13 +38,23 @@ public class Freecam extends QuickModule {
 			BoolArgumentType.bool(), Boolean.class,
 			builder, dispatcher
 		);
-	}
 
-	private Vector3d prev_pos = new Vector3d(0.0, 0.0, 0.0);
+		this.speed = this.option(
+			"speed", "flight speed in freecam", 0.05,
+			DoubleArgumentType.doubleArg(0.0), Double.class,
+			builder, dispatcher
+		);
+
+		this.drift = this.option(
+			"drift", "allow inertia drift in freecam", true,
+			BoolArgumentType.bool(), Boolean.class,
+			builder, dispatcher
+		);
+	}
 
 	@SubscribeEvent
 	public void onPacket(PacketEvent event) {
-		if (BoSCoVicino.minecraft.player == null) return;
+		if (MC.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()));
@@ -41,20 +63,69 @@ public class Freecam extends QuickModule {
 		}
 	}
 
+	@SubscribeEvent
+	protected void onTick(TickEvent.ClientTickEvent event) {
+		if (MC.player == null) return;
+		MC.player.abilities.setFlyingSpeed(this.speed.get().floatValue());
+		if (!this.drift.get() && !Keyboard.isStrafing()) {
+			MC.player.setDeltaMovement(Vector3d.ZERO);
+		}
+	}
+
 	@Override
 	protected void onEnabled() {
-		if (BoSCoVicino.minecraft.player != null) {
+		if (MC.player == null) {
-			this.prev_pos = BoSCoVicino.minecraft.player.position();
+			BoSCoVicino.log("[!] Can only enable freecam while in-game");
-			BoSCoVicino.minecraft.gameMode.setLocalMode(GameType.SPECTATOR);
+			this.disable();
 		}
+
+		this.prev_speed = MC.player.abilities.getFlyingSpeed();
+		this.prev_pos = MC.player.position();
+		this.prev_gamemode = MC.gameMode.getPlayerMode();
+		MC.gameMode.setLocalMode(GameType.SPECTATOR);
+		MC.player.noCulling = true;
+		if (MC.getConnection() != null) {
+			NetworkPlayerInfo info = MC.getConnection().getPlayerInfo(
+				MC.player.getGameProfile().getId()
+			);
+			info.gameMode = GameType.SPECTATOR; // ACCESSTRANSFORMER: public net.minecraft.client.network.play.NetworkPlayerInfo field_178866_b
+		}
+
+		this.mock_player = new MockPlayer();
+		this.mock_player.setPosAndOldPos(this.prev_pos.x, this.prev_pos.y, this.prev_pos.z);
+		this.mock_player.setYBodyRot(MC.player.yBodyRot);
+		MC.level.addPlayer(-666, this.mock_player);
 	}
 
 	@Override
 	protected void onDisabled() {
-		if (BoSCoVicino.minecraft.player != null) {
+		if (MC.player == null) return;
-			BoSCoVicino.minecraft.gameMode.setLocalMode(GameType.SURVIVAL);
+		MC.gameMode.setLocalMode(this.prev_gamemode);
-			BoSCoVicino.minecraft.player.setPos(this.prev_pos.x, this.prev_pos.y, this.prev_pos.z);
+		MC.player.noCulling = false;
+		MC.player.abilities.setFlyingSpeed(this.prev_speed);
+		if (MC.getConnection() != null) {
+			NetworkPlayerInfo info = MC.getConnection().getPlayerInfo(
+				MC.player.getGameProfile().getId()
+			);
+			info.gameMode = this.prev_gamemode; // ACCESSTRANSFORMER: public net.minecraft.client.network.play.NetworkPlayerInfo field_178866_b
 		}
+		MC.player.setPos(this.prev_pos.x, this.prev_pos.y, this.prev_pos.z);
+		MC.player.setDeltaMovement(Vector3d.ZERO);
+		MC.level.removeEntity(this.mock_player.getId());
+		this.mock_player = null; // get rid of reference
 	}
 
+	private class MockPlayer extends RemoteClientPlayerEntity {
+		public MockPlayer() {
+			super(MC.level, MC.player.getGameProfile());
+			this.setId(-666); // TODO hax
+		}
+
+		@Override
+		public boolean isSpectator() { return false; }
+		
+		@Override
+		public boolean isCreative() { return false; }
+
+	}
 }

src/main/java/ftbsc/bscv/tools/Keyboard.java

@@ -0,0 +1,19 @@
+package ftbsc.bscv.tools;
+
+import ftbsc.bscv.ICommons;
+
+public class Keyboard implements ICommons {
+
+	public static boolean isStrafing() {
+		return MC.options.keyUp.isDown()
+			|| MC.options.keyDown.isDown()
+			|| MC.options.keyLeft.isDown()
+			|| MC.options.keyRight.isDown();
+	}
+
+	public static boolean isMoving() {
+		return isStrafing()
+			|| MC.options.keyJump.isDown()
+			|| MC.options.keySprint.isDown();
+	}
+}