1 files changed, 113 insertions, 0 deletions
diff --git a/EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/fight/ReachCheck.java b/EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/fight/ReachCheck.java
new file mode 100644
index 000000000..c56caed08
--- /dev/null
+++ b/EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/fight/ReachCheck.java
@@ -0,0 +1,113 @@
+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 reach check will find out if a player interacts with something that's too far away
+ *
+ */
+public class ReachCheck extends FightCheck
+{
+	public ReachCheck(NoCheat plugin)
+	{
+		super(plugin, "fight.reach", Permissions.FIGHT_REACH);
+	}
+
+	public boolean check(NoCheatPlayer player, FightData data, FightConfig cc)
+	{
+
+		boolean cancel = false;
+
+		final long time = System.currentTimeMillis();
+
+		// Get the width of the damagee
+		Entity entity = data.damagee;
+
+		// Safeguard, if entity is Giant or Ender Dragon, this check will fail
+		// due to giant and hard to define hitboxes
+		if (entity instanceof EntityComplex || entity instanceof EntityComplexPart)
+		{
+			return false;
+		}
+
+		// Distance is calculated from eye location to center of targeted
+		// If the player is further away from his target than allowed, the
+		// difference will be assigned to "distance"
+		final double off = CheckUtil.reachCheck(player, entity.locX, entity.locY + 1.0D, entity.locZ, cc.reachLimit);
+
+		if (off < 0.1D)
+		{
+			// Player did probably nothing wrong
+			// reduce violation counter to reward him
+			data.reachVL *= 0.80D;
+		}
+		else
+		{
+			// Player failed the check
+			// Increment violation counter and statistics
+			// This is influenced by lag, so don't do it if there was lag
+			if (!plugin.skipCheck())
+			{
+				double sqrt = Math.sqrt(off);
+				data.reachVL += sqrt;
+				incrementStatistics(player, Id.FI_REACH, 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.reachActions, data.reachVL);
+
+			if (cancel)
+			{
+				// if we should cancel, remember the current time too
+				data.reachLastViolationTime = time;
+			}
+		}
+
+		// If the player is still in penalty time, cancel the event anyway
+		if (data.reachLastViolationTime + cc.reachPenaltyTime > time)
+		{
+			// A safeguard to avoid people getting stuck in penalty time
+			// indefinitely in case the system time of the server gets changed
+			if (data.reachLastViolationTime > time)
+			{
+				data.reachLastViolationTime = 0;
+			}
+
+			// He is in penalty time, therefore request cancelling of the event
+			return true;
+		}
+
+		return cancel;
+	}
+
+	@Override
+	public boolean isEnabled(FightConfig cc)
+	{
+		return cc.reachCheck;
+	}
+
+	@Override
+	public String getParameter(ParameterName wildcard, NoCheatPlayer player)
+	{
+
+		if (wildcard == ParameterName.VIOLATIONS)
+		{
+			return String.format(Locale.US, "%d", (int)getData(player).reachVL);
+		}
+		else
+		{
+			return super.getParameter(wildcard, player);
+		}
+	}
+}