From 78f4820876f42f7b50bf88f64afd45bee939e4e4 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@bigpond.com>
Date: Mon, 12 Mar 2012 10:39:36 +1100
Subject: Initial formatted and slightly tweaked version of @evenprime 's
 NoCheat. Will be intergrated into the main Essentials as soon as possible

---
 .../anticheat/checks/fight/DirectionCheck.java     | 120 +++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/fight/DirectionCheck.java

(limited to 'EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/fight/DirectionCheck.java')

diff --git a/EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/fight/DirectionCheck.java b/EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/fight/DirectionCheck.java
new file mode 100644
index 000000000..93ce58221
--- /dev/null
+++ b/EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/fight/DirectionCheck.java
@@ -0,0 +1,120 @@
+package com.earth2me.essentials.anticheat.checks.fight;
+
+import com.earth2me.essentials.anticheat.NoCheat;
+import com.earth2me.essentials.anticheat.NoCheatPlayer;
+import com.earth2me.essentials.anticheat.actions.ParameterName;
+import com.earth2me.essentials.anticheat.checks.CheckUtil;
+import com.earth2me.essentials.anticheat.config.Permissions;
+import com.earth2me.essentials.anticheat.data.Statistics.Id;
+import java.util.Locale;
+import net.minecraft.server.Entity;
+import net.minecraft.server.EntityComplex;
+import net.minecraft.server.EntityComplexPart;
+
+
+/**
+ * The DirectionCheck will find out if a player tried to interact with something that's not in his field of view.
+ *
+ */
+public class DirectionCheck extends FightCheck
+{
+	public DirectionCheck(NoCheat plugin)
+	{
+		super(plugin, "fight.direction", Permissions.FIGHT_DIRECTION);
+	}
+
+	public boolean check(NoCheatPlayer player, FightData data, FightConfig cc)
+	{
+
+		boolean cancel = false;
+
+		final long time = System.currentTimeMillis();
+
+		// Get the damagee (entity that got hit)
+		Entity entity = data.damagee;
+
+		// Safeguard, if entity is complex, this check will fail
+		// due to giant and hard to define hitboxes
+		if (entity instanceof EntityComplex || entity instanceof EntityComplexPart)
+		{
+			return false;
+		}
+
+		// Find out how wide the entity is
+		final float width = entity.length > entity.width ? entity.length : entity.width;
+		// entity.height is broken and will always be 0, therefore
+		// calculate height instead based on boundingBox
+		final double height = entity.boundingBox.e - entity.boundingBox.b;
+
+		// How far "off" is the player with his aim. We calculate from the
+		// players eye location and view direction to the center of the target
+		// entity. If the line of sight is more too far off, "off" will be
+		// bigger than 0
+		final double off = CheckUtil.directionCheck(player, entity.locX, entity.locY + (height / 2D), entity.locZ, width, height, cc.directionPrecision);
+
+		if (off < 0.1D)
+		{
+			// Player did probably nothing wrong
+			// reduce violation counter to reward him
+			data.directionVL *= 0.80D;
+		}
+		else
+		{
+			// Player failed the check
+			// Increment violation counter and statistics, but only if there
+			// wasn't serious lag
+			if (!plugin.skipCheck())
+			{
+				double sqrt = Math.sqrt(off);
+				data.directionVL += sqrt;
+				incrementStatistics(player, Id.FI_DIRECTION, sqrt);
+			}
+
+			// Execute whatever actions are associated with this check and the
+			// violation level and find out if we should cancel the event
+			cancel = executeActions(player, cc.directionActions, data.directionVL);
+
+			if (cancel)
+			{
+				// if we should cancel, remember the current time too
+				data.directionLastViolationTime = time;
+			}
+		}
+
+		// If the player is still in penalty time, cancel the event anyway
+		if (data.directionLastViolationTime + cc.directionPenaltyTime > time)
+		{
+			// A safeguard to avoid people getting stuck in penalty time
+			// indefinitely in case the system time of the server gets changed
+			if (data.directionLastViolationTime > time)
+			{
+				data.directionLastViolationTime = 0;
+			}
+
+			// He is in penalty time, therefore request cancelling of the event
+			return true;
+		}
+
+		return cancel;
+	}
+
+	@Override
+	public boolean isEnabled(FightConfig cc)
+	{
+		return cc.directionCheck;
+	}
+
+	@Override
+	public String getParameter(ParameterName wildcard, NoCheatPlayer player)
+	{
+
+		if (wildcard == ParameterName.VIOLATIONS)
+		{
+			return String.format(Locale.US, "%d", (int)getData(player).directionVL);
+		}
+		else
+		{
+			return super.getParameter(wildcard, player);
+		}
+	}
+}
-- 
cgit v1.2.3