BauSystem_Main/src/de/steamwar/bausystem/features/tracer2/Recorder.java

@@ -36,9 +36,21 @@ import java.util.Set;
 
 @Linked
 public class Recorder {
+    /**
+     * Map for all traces beeing activly recorded
+     */
     private final Map<Region, Trace> activeTraces = new HashMap<>();
+
+    /**
+     * Map for all tnts being traced, by region
+     */
     private final Map<Region, Set<TNTPrimed>> trackedTNT = new HashMap<>();
 
+    /**
+     * Maps a tracked tnt entity to the last record taken of it
+     */
+    private final Map<TNTPrimed, TNTRecord> lastRecordMap = new HashMap<>();
+
     /** Starts a recording at the given region
      *
      *  @param region region to be recorded

BauSystem_Main/src/de/steamwar/bausystem/features/tracer2/TNTRecord.java

@@ -19,5 +19,49 @@
 
 package de.steamwar.bausystem.features.tracer2;
 
+import lombok.Getter;
+import org.bukkit.Location;
+import org.bukkit.entity.TNTPrimed;
+import org.bukkit.util.Vector;
+
+@Getter
 public class TNTRecord {
+    /**
+     * Whether this is a record of a tnt explosion or an entity
+     */
+    private final boolean explosion;
+
+    /**
+     * Tick offset, from this record being taken to the start of the trace
+     */
+    private final int ticksSinceStart;
+
+    /**
+     * Fuse ticks of the recorded tnt (0 if this is an explosion)
+     */
+    private final int fuse;
+
+    /**
+     * Location of the recorded tnt
+     */
+    private final Location location;
+
+    /**
+     * Velocity of the recorded tnt
+     */
+    private final Vector velocity;
+
+    /**
+     * Reference to the last record having been taken of the tnt represented by this record
+     */
+    private final TNTRecord previous;
+
+    public TNTRecord(TNTPrimed tnt, boolean explosion, int ticksSinceStart, TNTRecord previous){
+        this.explosion = explosion;
+        this.ticksSinceStart = ticksSinceStart;
+        fuse = tnt.getFuseTicks();
+        location = tnt.getLocation();
+        velocity = tnt.getVelocity();
+        this.previous = previous;
+    }
 }