Refactor Hollows solvers, add tests, add Vec3Comparable, fix bugs (#95)

4 files changed, 1619 insertions, 0 deletions

diff --git a/src/test/java/io/github/moulberry/notenoughupdates/core/util/Vec3ComparableTest.java b/src/test/java/io/github/moulberry/notenoughupdates/core/util/Vec3ComparableTest.java
new file mode 100644
index 00000000..c0b451e3
--- /dev/null
+++ b/src/test/java/io/github/moulberry/notenoughupdates/core/util/Vec3ComparableTest.java
@@ -0,0 +1,193 @@
+package io.github.moulberry.notenoughupdates.core.util;
+
+import net.minecraft.util.BlockPos;
+import net.minecraft.util.Vec3;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class Vec3ComparableTest {
+	@Test
+	void equals_false_when_null() {
+		// Arrange
+		Vec3Comparable vec3c = new Vec3Comparable(1.0, 2.0, 3.0);
+
+		// Act
+		boolean areEqual = vec3c.equals(null);
+
+		// Assert
+		assertFalse(areEqual);
+	}
+
+	@Test
+	void equals_true_when_same_object() {
+		// Arrange
+		Vec3Comparable vec3c = new Vec3Comparable(1.0, 2.0, 3.0);
+
+		// Act
+		boolean areEqual = vec3c.equals(vec3c);
+
+		// Assert
+		assertTrue(areEqual);
+	}
+
+	@Test
+	void equals_true_when_same_value() {
+		// Arrange
+		Vec3Comparable vec3c1 = new Vec3Comparable(1.0, 2.0, 3.0);
+		Vec3Comparable vec3c2 = new Vec3Comparable(1.0, 2.0, 3.0);
+
+		// Act
+		boolean areEqual = vec3c1.equals(vec3c2);
+
+		// Assert
+		assertTrue(areEqual);
+	}
+
+	@Test
+	void equals_false_when_vec3_equals() {
+		// Arrange
+		Vec3Comparable vec3c1 = new Vec3Comparable(1.0, 2.0, 3.0);
+		Vec3 vec3c2 = new Vec3(1.0, 2.0, 3.0);
+
+		// Act
+		boolean areEqual = vec3c1.equals(vec3c2);
+
+		// Assert
+		assertFalse(areEqual);
+	}
+
+	@Test
+	void equals_false_when_different_object_type() {
+		// Arrange
+		Vec3Comparable vec3c1 = new Vec3Comparable(1.0, 2.0, 3.0);
+		BlockPos blockPos = new BlockPos(1.0, 2.0, 3.0);
+
+		// Act
+		boolean areEqual = vec3c1.equals(blockPos);
+
+		// Assert
+		assertFalse(areEqual);
+	}
+
+	@Test
+	void equals_false_when_different_value() {
+		// Arrange
+		Vec3Comparable vec3c1 = new Vec3Comparable(1.0, 2.0, 3.0);
+		Vec3Comparable vec3c2 = new Vec3Comparable(3.0, 2.0, 1.0);
+
+		// Act
+		boolean areEqual = vec3c1.equals(vec3c2);
+
+		// Assert
+		assertFalse(areEqual);
+	}
+
+	@Test
+	void hashCode_same_when_same_value() {
+		// Arrange
+		Vec3Comparable vec3c1 = new Vec3Comparable(1.0, 2.0, 3.0);
+		Vec3Comparable vec3c2 = new Vec3Comparable(1.0, 2.0, 3.0);
+
+		// Act
+		double vec3c1Hash = vec3c1.hashCode();
+		double vec3c2Hash = vec3c2.hashCode();
+
+		// Assert
+		assertEquals(vec3c1Hash, vec3c2Hash);
+	}
+
+	@Test
+	void hashCode_different_when_different_value() {
+		// Arrange
+		Vec3Comparable vec3c1 = new Vec3Comparable(1.0, 2.0, 3.0);
+		Vec3Comparable vec3c2 = new Vec3Comparable(3.0, 2.0, 1.0);
+
+		// Act
+		double vec3c1Hash = vec3c1.hashCode();
+		double vec3c2Hash = vec3c2.hashCode();
+
+		// Assert
+		assertNotEquals(vec3c1Hash, vec3c2Hash);
+	}
+
+	@Test
+	void compareTo_zero_when_equal() {
+		// Arrange
+		Vec3Comparable vec3c1 = new Vec3Comparable(1.0, 2.0, 3.0);
+		Vec3Comparable vec3c2 = new Vec3Comparable(1.0, 2.0, 3.0);
+
+		// Act
+		int result = vec3c1.compareTo(vec3c2);
+
+		// Assert
+		assertEquals(0, result);
+	}
+
+	@Test
+	void compareTo_negative_when_lower() {
+		// Arrange
+		Vec3Comparable vec3c1 = new Vec3Comparable(0.0, 2.0, 3.0);
+		Vec3Comparable vec3c2 = new Vec3Comparable(1.0, 2.0, 3.0);
+
+		// Act
+		int result = vec3c1.compareTo(vec3c2);
+
+		// Assert
+		assertTrue(result < 0);
+	}
+
+	@Test
+	void compareTo_positive_when_x_y_or_z_is_higher() {
+		// Arrange
+		Vec3Comparable vec3c1x = new Vec3Comparable(2.0, 2.0, 3.0);
+		Vec3Comparable vec3c2x = new Vec3Comparable(1.0, 2.0, 3.0);
+		Vec3Comparable vec3c1y = new Vec3Comparable(1.0, 3.0, 3.0);
+		Vec3Comparable vec3c2y = new Vec3Comparable(1.0, 2.0, 3.0);
+		Vec3Comparable vec3c1z = new Vec3Comparable(1.0, 2.0, 4.0);
+		Vec3Comparable vec3c2z = new Vec3Comparable(1.0, 2.0, 3.0);
+
+		// Act
+		int resultX = vec3c1x.compareTo(vec3c2x);
+		int resultY = vec3c1y.compareTo(vec3c2y);
+		int resultZ = vec3c1z.compareTo(vec3c2z);
+
+		// Assert
+		assertTrue(resultX > 0);
+		assertTrue(resultY > 0);
+		assertTrue(resultZ > 0);
+	}
+
+	@Test
+	void compareTo_throws_on_null() {
+		// Arrange
+		Vec3Comparable vec3c = new Vec3Comparable(1.0, 2.0, 3.0);
+
+		// Act & Assert
+		Assertions.assertThrows(NullPointerException.class, () -> {
+			vec3c.compareTo(null);
+		});
+	}
+
+	@Test
+	void signumEquals_is_true_when_all_signums_match() {
+		Vec3Comparable first = new Vec3Comparable(-1.0, 1.0, 0);
+		Vec3 second = new Vec3(-1.0, 1.0, 0);
+		Assertions.assertTrue(first.signumEquals(second));
+	}
+
+	@Test
+	void signumEquals_is_false_when_any_signum_differs() {
+		Vec3Comparable first = new Vec3Comparable(-1.0, 1.0, 0);
+		Vec3 second = new Vec3(-1.0, 1.0, 1.0);
+		Vec3 third = new Vec3(-1.0, -1.0, 0);
+		Vec3 fourth = new Vec3(1.0, 1.0, 1.0);
+		Assertions.assertFalse(first.signumEquals(second));
+		Assertions.assertFalse(first.signumEquals(third));
+		Assertions.assertFalse(first.signumEquals(fourth));
+	}
+}
diff --git a/src/test/java/io/github/moulberry/notenoughupdates/miscfeatures/CrystalMetalDetectorSolverTest.java b/src/test/java/io/github/moulberry/notenoughupdates/miscfeatures/CrystalMetalDetectorSolverTest.java
new file mode 100644
index 00000000..58233410
--- /dev/null
+++ b/src/test/java/io/github/moulberry/notenoughupdates/miscfeatures/CrystalMetalDetectorSolverTest.java
@@ -0,0 +1,204 @@
+package io.github.moulberry.notenoughupdates.miscfeatures;
+
+import io.github.moulberry.notenoughupdates.core.util.Vec3Comparable;
+import io.github.moulberry.notenoughupdates.miscfeatures.CrystalMetalDetectorSolver.SolutionState;
+import io.github.moulberry.notenoughupdates.util.NEUDebugLogger;
+import net.minecraft.util.BlockPos;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import java.util.ArrayList;
+
+class CrystalMetalDetectorSolverTest {
+	class Location {
+		double distance;
+		Vec3Comparable playerPosition;
+		SolutionState expectedState;
+		boolean centerKnown;
+
+		public Location(double distance,
+										Vec3Comparable playerPosition,
+										SolutionState expectedState,
+										boolean centerKnown) {
+			this.distance = distance;
+			this.playerPosition = playerPosition;
+			this.expectedState = expectedState;
+			this.centerKnown = centerKnown;
+		}
+	}
+
+	class Solution {
+		ArrayList<Location> locations = new ArrayList<>();
+		BlockPos center = BlockPos.ORIGIN;
+		BlockPos expectedSolution = BlockPos.ORIGIN;
+	}
+
+	@BeforeEach
+	void setUp() {
+		CrystalMetalDetectorSolver.initWorld();
+		CrystalMetalDetectorSolver.treasureAllowedPredicate = blockPos -> true;
+		NEUDebugLogger.logMethod = 	CrystalMetalDetectorSolverTest::neuDebugLog;
+		NEUDebugLogger.allFlagsEnabled = true;
+	}
+
+	private void findPossibleSolutionsTwice(Location loc, boolean centerNewlyDiscovered) {
+		// Each location has to be received twice to be valid
+		CrystalMetalDetectorSolver.findPossibleSolutions(loc.distance, loc.playerPosition, centerNewlyDiscovered);
+		CrystalMetalDetectorSolver.findPossibleSolutions(loc.distance, loc.playerPosition, false);
+	}
+
+	private void checkSolution(Solution solution) {
+		boolean centerSet = false;
+		int index = 0;
+		for (Location loc : solution.locations) {
+			if (loc.centerKnown && !centerSet && !solution.center.equals(BlockPos.ORIGIN)) {
+				CrystalMetalDetectorSolver.setMinesCenter(solution.center);
+				centerSet = true;
+				findPossibleSolutionsTwice(loc, true);
+			} else {
+				findPossibleSolutionsTwice(loc, false);
+			}
+			Assertions.assertEquals(loc.expectedState,
+				CrystalMetalDetectorSolver.currentState,
+				"Location index " + index);
+			index++;
+		}
+
+		Assertions.assertEquals(solution.expectedSolution, CrystalMetalDetectorSolver.getSolution());
+	}
+
+	@Test
+	void findPossibleSolutions_single_location_sample_is_ignored() {
+		Location location = new Location(37.3,
+			new Vec3Comparable(779.1057116115207, 70.5, 502.2997937667801),
+			SolutionState.MULTIPLE,
+			false);
+
+		CrystalMetalDetectorSolver.findPossibleSolutions(location.distance, location.playerPosition, false);
+		Assertions.assertEquals(SolutionState.NOT_STARTED, CrystalMetalDetectorSolver.previousState,
+			"Previous state");
+		Assertions.assertEquals(SolutionState.NOT_STARTED, CrystalMetalDetectorSolver.currentState,
+			"Current state");
+	}
+
+	@Test
+	void findPossibleSolutions_currentState_becomes_previousState() {
+		Location location = new Location(37.3,
+			new Vec3Comparable(779.1057116115207, 70.5, 502.2997937667801),
+			SolutionState.MULTIPLE,
+			false);
+
+		findPossibleSolutionsTwice(location, false);
+		Assertions.assertEquals(SolutionState.NOT_STARTED, CrystalMetalDetectorSolver.previousState,
+			"Previous state");
+		Assertions.assertEquals(location.expectedState, CrystalMetalDetectorSolver.currentState,
+			"Current state");
+	}
+
+	@Test
+	void findPossibleSolutions_state_is_invalid_when_solution_and_distance_mismatch() {
+		Solution solution = new Solution();
+		solution.center = new BlockPos(736, 88, 547);
+		solution.expectedSolution = new BlockPos(722, 67, 590);
+		solution.locations.add(new Location(67.5,
+			new Vec3Comparable(757.8235166144441, 68.0, 532.8037800566217),
+			SolutionState.FOUND_KNOWN,
+			true));
+		// slightly different player position with invalid distance
+		solution.locations.add(new Location(4.0,
+			new Vec3Comparable(757.8235166144441, 69.0, 532.8037800566217),
+			SolutionState.INVALID,
+			true));
+		checkSolution(solution);
+	}
+
+	@Test
+	void findPossibleSolutions_state_is_failed_when_second_location_eliminates_all_blocks() {
+		Solution solution = new Solution();
+		solution.center = new BlockPos(736, 88, 547);
+		solution.locations.add(new Location(29.4,
+			new Vec3Comparable(721.5979761606153, 68.0, 590.9056839507032),
+			SolutionState.MULTIPLE_KNOWN,
+			true));
+		solution.locations.add(new Location(4.0, // actual distance should be 38.2
+			new Vec3Comparable(711.858759313838, 67.0, 590.3583935310772),
+			SolutionState.FAILED,
+			true));
+		checkSolution(solution);
+	}
+
+	@Test
+	void findPossibleSolutions_state_is_found_known_when_center_found_after_location() {
+		Solution solution = new Solution();
+		solution.center = new BlockPos(736, 88, 547);
+		solution.locations.add(new Location(67.5,
+			new Vec3Comparable(757.8235166144441, 68.0, 532.8037800566217),
+			SolutionState.MULTIPLE,
+			false));
+		checkSolution(solution);
+
+		solution.locations.get(0).centerKnown = true;
+		solution.locations.get(0).expectedState = SolutionState.FOUND_KNOWN;
+		solution.expectedSolution = new BlockPos(722, 67, 590);
+		checkSolution(solution);
+	}
+
+	@Test
+	void findPossibleSolutions_state_is_found_when_single_known_location() {
+		Solution solution = new Solution();
+		solution.center = new BlockPos(736, 88, 547);
+		solution.expectedSolution = new BlockPos(722, 67, 590);
+		solution.locations.add(new Location(67.5,
+			new Vec3Comparable(757.8235166144441, 68.0, 532.8037800566217),
+			SolutionState.FOUND_KNOWN,
+			true));
+		checkSolution(solution);
+	}
+
+	@Test
+	void findPossibleSolutions_states_are_correct_using_multiple_locations_with_unknown_center() {
+		Solution solution = new Solution();
+		solution.locations.add(new Location(37.3,
+			new Vec3Comparable(779.1057116115207, 70.5, 502.2997937667801),
+			SolutionState.MULTIPLE,
+			false));
+		solution.locations.add(new Location(34.8,
+			new Vec3Comparable(782.6999999880791, 71.0, 508.69999998807907),
+			SolutionState.FOUND,
+			false));
+		solution.expectedSolution = new BlockPos(758, 67, 533);
+
+		checkSolution(solution);
+	}
+
+	@Test
+	void findPossibleSolutions_states_are_correct_when_multiple_known_locations_found() {
+		Solution solution = new Solution();
+
+		// First, validate that the solution doesn't work without the center
+		solution.locations.add(new Location(29.4,
+			new Vec3Comparable(721.5979761606153, 68.0, 590.9056839507032),
+			SolutionState.MULTIPLE,
+			false));
+		solution.locations.add(new Location(38.2,
+			new Vec3Comparable(711.858759313838, 67.0, 590.3583935310772),
+			SolutionState.MULTIPLE,
+			false));
+		checkSolution(solution);
+
+		// Now validate that the solution works with the center
+		CrystalMetalDetectorSolver.resetSolution(false);
+		solution.locations.get(0).expectedState = SolutionState.MULTIPLE_KNOWN;
+		solution.locations.get(0).centerKnown = true;
+		solution.locations.get(1).expectedState = SolutionState.FOUND_KNOWN;
+		solution.locations.get(1).centerKnown = true;
+		solution.expectedSolution = new BlockPos(748, 66, 578);
+		solution.center = new BlockPos(736, 88, 547);
+		checkSolution(solution);
+	}
+
+	private static void neuDebugLog(String message) {
+		System.out.println(message);
+	}
+}
diff --git a/src/test/java/io/github/moulberry/notenoughupdates/miscfeatures/CrystalWishingCompassSolverTest.java b/src/test/java/io/github/moulberry/notenoughupdates/miscfeatures/CrystalWishingCompassSolverTest.java
new file mode 100644
index 00000000..ed39a505
--- /dev/null
+++ b/src/test/java/io/github/moulberry/notenoughupdates/miscfeatures/CrystalWishingCompassSolverTest.java
@@ -0,0 +1,1206 @@
+package io.github.moulberry.notenoughupdates.miscfeatures;
+
+import io.github.moulberry.notenoughupdates.core.util.Vec3Comparable;
+import io.github.moulberry.notenoughupdates.miscfeatures.CrystalWishingCompassSolver.CompassTarget;
+import io.github.moulberry.notenoughupdates.miscfeatures.CrystalWishingCompassSolver.HandleCompassResult;
+import io.github.moulberry.notenoughupdates.miscfeatures.CrystalWishingCompassSolver.SolverState;
+import io.github.moulberry.notenoughupdates.util.NEUDebugLogger;
+import net.minecraft.util.BlockPos;
+import net.minecraft.util.Vec3;
+import net.minecraft.util.Vec3i;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.EnumSet;
+
+import static io.github.moulberry.notenoughupdates.miscfeatures.CrystalWishingCompassSolver.*;
+
+class CrystalWishingCompassSolverTest {
+	private static final CrystalWishingCompassSolver solver = getInstance();
+	long systemTimeMillis;
+	private final long DELAY_AFTER_FIRST_COMPASS_LAST_PARTICLE = 500L;
+
+	private final CompassUse minesOfDivanCompassUse1 = new CompassUse(
+		1647528732979L,
+		new BlockPos(754, 137, 239),
+		new ArrayList<>(Arrays.asList(
+			new ParticleSpawn(new Vec3Comparable(754.358459, 138.536407, 239.200928), 137),
+			new ParticleSpawn(new Vec3Comparable(754.315735, 138.444351, 239.690521), 45),
+			new ParticleSpawn(new Vec3Comparable(754.272278, 138.352051, 240.180008), 51),
+			new ParticleSpawn(new Vec3Comparable(754.228760, 138.259750, 240.669479), 49),
+			new ParticleSpawn(new Vec3Comparable(754.185303, 138.167435, 241.158966), 57),
+			new ParticleSpawn(new Vec3Comparable(754.141846, 138.075134, 241.648438), 50),
+			new ParticleSpawn(new Vec3Comparable(754.098328, 137.982819, 242.137909), 51),
+			new ParticleSpawn(new Vec3Comparable(754.054871, 137.890518, 242.627396), 57),
+			new ParticleSpawn(new Vec3Comparable(754.011353, 137.798203, 243.116867), 44),
+			new ParticleSpawn(new Vec3Comparable(753.967896, 137.705887, 243.606354), 59),
+			new ParticleSpawn(new Vec3Comparable(753.924438, 137.613586, 244.095825), 35),
+			new ParticleSpawn(new Vec3Comparable(753.880920, 137.521271, 244.585297), 48),
+			new ParticleSpawn(new Vec3Comparable(753.837463, 137.428970, 245.074783), 70),
+			new ParticleSpawn(new Vec3Comparable(753.793945, 137.336655, 245.564255), 33),
+			new ParticleSpawn(new Vec3Comparable(753.750488, 137.244354, 246.053741), 55),
+			new ParticleSpawn(new Vec3Comparable(753.707031, 137.152039, 246.543213), 42),
+			new ParticleSpawn(new Vec3Comparable(753.663513, 137.059738, 247.032700), 56),
+			new ParticleSpawn(new Vec3Comparable(753.620056, 136.967422, 247.522171), 48),
+			new ParticleSpawn(new Vec3Comparable(753.576538, 136.875122, 248.011642), 56),
+			new ParticleSpawn(new Vec3Comparable(754.333618, 138.527710, 239.197800), 55)
+		)),
+		HandleCompassResult.SUCCESS,
+		SolverState.NEED_SECOND_COMPASS);
+
+	private final CompassUse minesOfDivanCompassUse2 = new CompassUse(
+		DELAY_AFTER_FIRST_COMPASS_LAST_PARTICLE,
+		new BlockPos(760, 134, 266),
+		new ArrayList<>(Arrays.asList(
+			new ParticleSpawn(new Vec3Comparable(759.686951, 135.524994, 266.190704), 129),
+			new ParticleSpawn(new Vec3Comparable(759.625183, 135.427887, 266.677277), 69),
+			new ParticleSpawn(new Vec3Comparable(759.561707, 135.330704, 267.163635), 31),
+			new ParticleSpawn(new Vec3Comparable(759.498230, 135.233536, 267.649963), 115),
+			new ParticleSpawn(new Vec3Comparable(759.434753, 135.136368, 268.136322), 0),
+			new ParticleSpawn(new Vec3Comparable(759.371277, 135.039200, 268.622650), 46),
+			new ParticleSpawn(new Vec3Comparable(759.307800, 134.942017, 269.109009), 49),
+			new ParticleSpawn(new Vec3Comparable(759.244324, 134.844849, 269.595337), 59),
+			new ParticleSpawn(new Vec3Comparable(759.180847, 134.747681, 270.081696), 45),
+			new ParticleSpawn(new Vec3Comparable(759.117371, 134.650513, 270.568024), 39),
+			new ParticleSpawn(new Vec3Comparable(759.053894, 134.553329, 271.054352), 67),
+			new ParticleSpawn(new Vec3Comparable(758.990356, 134.456161, 271.540710), 49),
+			new ParticleSpawn(new Vec3Comparable(758.926880, 134.358994, 272.027039), 32),
+			new ParticleSpawn(new Vec3Comparable(758.863403, 134.261826, 272.513397), 61),
+			new ParticleSpawn(new Vec3Comparable(758.799927, 134.164642, 272.999725), 44),
+			new ParticleSpawn(new Vec3Comparable(758.736450, 134.067474, 273.486084), 48),
+			new ParticleSpawn(new Vec3Comparable(758.672974, 133.970306, 273.972412), 57),
+			new ParticleSpawn(new Vec3Comparable(758.609497, 133.873138, 274.458740), 55),
+			new ParticleSpawn(new Vec3Comparable(758.546021, 133.775955, 274.945099), 59),
+			new ParticleSpawn(new Vec3Comparable(758.482544, 133.678787, 275.431427), 38),
+			new ParticleSpawn(new Vec3Comparable(759.636658, 135.522827, 266.186371), 0)
+		)),
+		HandleCompassResult.SUCCESS,
+		SolverState.SOLVED);
+
+	Vec3i minesOfDivanSolution = new Vec3i(735, 98, 451);
+
+	private final CompassUse goblinHoldoutCompassUse1 = new CompassUse(
+		1647776326763L,
+		new BlockPos(454, 87, 776),
+		new ArrayList<>(Arrays.asList(
+			new ParticleSpawn(new Vec3Comparable(454.171722, 88.616852, 775.807190), 188),
+			new ParticleSpawn(new Vec3Comparable(454.010315, 88.613464, 775.333984), 44),
+			new ParticleSpawn(new Vec3Comparable(453.849243, 88.610069, 774.860657), 61),
+			new ParticleSpawn(new Vec3Comparable(453.688141, 88.606674, 774.387329), 51),
+			new ParticleSpawn(new Vec3Comparable(453.527069, 88.603271, 773.914001), 40),
+			new ParticleSpawn(new Vec3Comparable(453.365997, 88.599876, 773.440674), 57),
+			new ParticleSpawn(new Vec3Comparable(453.204926, 88.596481, 772.967346), 45),
+			new ParticleSpawn(new Vec3Comparable(453.043854, 88.593086, 772.494019), 49),
+			new ParticleSpawn(new Vec3Comparable(452.882782, 88.589691, 772.020691), 46),
+			new ParticleSpawn(new Vec3Comparable(452.721710, 88.586288, 771.547302), 65),
+			new ParticleSpawn(new Vec3Comparable(452.560638, 88.582893, 771.073975), 43),
+			new ParticleSpawn(new Vec3Comparable(452.399567, 88.579498, 770.600647), 50),
+			new ParticleSpawn(new Vec3Comparable(452.238495, 88.576103, 770.127319), 48),
+			new ParticleSpawn(new Vec3Comparable(452.077423, 88.572701, 769.653992), 47),
+			new ParticleSpawn(new Vec3Comparable(451.916351, 88.569305, 769.180664), 60),
+			new ParticleSpawn(new Vec3Comparable(451.755280, 88.565910, 768.707336), 40),
+			new ParticleSpawn(new Vec3Comparable(451.594208, 88.562515, 768.234009), 69),
+			new ParticleSpawn(new Vec3Comparable(451.433136, 88.559120, 767.760681), 40),
+			new ParticleSpawn(new Vec3Comparable(451.272064, 88.555717, 767.287354), 42),
+			new ParticleSpawn(new Vec3Comparable(454.183441, 88.616600, 775.803040), 54)
+		)),
+		HandleCompassResult.SUCCESS,
+		SolverState.NEED_SECOND_COMPASS);
+
+	private final CompassUse goblinHoldoutCompassUse2 = new CompassUse(
+		DELAY_AFTER_FIRST_COMPASS_LAST_PARTICLE,
+		new BlockPos(439, 85, 777),
+		new ArrayList<>(Arrays.asList(
+			new ParticleSpawn(new Vec3Comparable(439.068848, 86.624870, 776.043701), 136),
+			new ParticleSpawn(new Vec3Comparable(438.936066, 86.625786, 775.561646), 46),
+			new ParticleSpawn(new Vec3Comparable(438.804352, 86.626595, 775.079346), 65),
+			new ParticleSpawn(new Vec3Comparable(438.672699, 86.627396, 774.596985), 40),
+			new ParticleSpawn(new Vec3Comparable(438.541016, 86.628197, 774.114624), 51),
+			new ParticleSpawn(new Vec3Comparable(438.409332, 86.628998, 773.632263), 50),
+			new ParticleSpawn(new Vec3Comparable(438.277679, 86.629799, 773.149902), 50),
+			new ParticleSpawn(new Vec3Comparable(438.145996, 86.630608, 772.667603), 56),
+			new ParticleSpawn(new Vec3Comparable(438.014343, 86.631409, 772.185242), 40),
+			new ParticleSpawn(new Vec3Comparable(437.882660, 86.632210, 771.702881), 65),
+			new ParticleSpawn(new Vec3Comparable(437.751007, 86.633011, 771.220520), 45),
+			new ParticleSpawn(new Vec3Comparable(437.619324, 86.633812, 770.738159), 42),
+			new ParticleSpawn(new Vec3Comparable(437.487671, 86.634613, 770.255798), 60),
+			new ParticleSpawn(new Vec3Comparable(437.355988, 86.635414, 769.773499), 51),
+			new ParticleSpawn(new Vec3Comparable(437.224335, 86.636215, 769.291138), 44),
+			new ParticleSpawn(new Vec3Comparable(437.092651, 86.637024, 768.808777), 56),
+			new ParticleSpawn(new Vec3Comparable(436.960999, 86.637825, 768.326416), 56),
+			new ParticleSpawn(new Vec3Comparable(436.829315, 86.638626, 767.844055), 40),
+			new ParticleSpawn(new Vec3Comparable(436.697632, 86.639427, 767.361694), 50),
+			new ParticleSpawn(new Vec3Comparable(436.565979, 86.640228, 766.879395), 46),
+			new ParticleSpawn(new Vec3Comparable(439.108551, 86.620811, 776.031067), 0)
+		)),
+		HandleCompassResult.SUCCESS,
+		SolverState.SOLVED);
+
+	Vec3i goblinHoldoutKingSolution = new Vec3i(377, 87, 550);
+	Vec3i goblinHoldoutQueenSolution = new Vec3i(322, 139, 769);
+
+	private final CompassUse precursorCityCompassUse1 = new CompassUse(
+		1647744920365L,
+		new BlockPos(570, 120, 565),
+		new ArrayList<>(Arrays.asList(
+			new ParticleSpawn(new Vec3Comparable(570.428955, 121.630745, 565.674500), 192),
+			new ParticleSpawn(new Vec3Comparable(570.572998, 121.642563, 566.153137), 52),
+			new ParticleSpawn(new Vec3Comparable(570.714233, 121.654442, 566.632629), 45),
+			new ParticleSpawn(new Vec3Comparable(570.855286, 121.666321, 567.112183), 51),
+			new ParticleSpawn(new Vec3Comparable(570.996338, 121.678200, 567.591736), 0),
+			new ParticleSpawn(new Vec3Comparable(571.137390, 121.690079, 568.071289), 111),
+			new ParticleSpawn(new Vec3Comparable(571.278442, 121.701958, 568.550781), 38),
+			new ParticleSpawn(new Vec3Comparable(571.419495, 121.713844, 569.030334), 51),
+			new ParticleSpawn(new Vec3Comparable(571.560547, 121.725723, 569.509888), 49),
+			new ParticleSpawn(new Vec3Comparable(571.701599, 121.737602, 569.989441), 0),
+			new ParticleSpawn(new Vec3Comparable(571.842651, 121.749481, 570.468994), 101),
+			new ParticleSpawn(new Vec3Comparable(571.983704, 121.761360, 570.948547), 53),
+			new ParticleSpawn(new Vec3Comparable(572.124756, 121.773239, 571.428101), 47),
+			new ParticleSpawn(new Vec3Comparable(572.265747, 121.785118, 571.907654), 49),
+			new ParticleSpawn(new Vec3Comparable(572.406799, 121.796997, 572.387207), 49),
+			new ParticleSpawn(new Vec3Comparable(572.547852, 121.808876, 572.866699), 51),
+			new ParticleSpawn(new Vec3Comparable(572.688904, 121.820755, 573.346252), 57),
+			new ParticleSpawn(new Vec3Comparable(572.829956, 121.832634, 573.825806), 42),
+			new ParticleSpawn(new Vec3Comparable(572.971008, 121.844513, 574.305359), 50),
+			new ParticleSpawn(new Vec3Comparable(573.112061, 121.856392, 574.784912), 52),
+			new ParticleSpawn(new Vec3Comparable(570.372192, 121.631874, 565.694946), 0)
+		)),
+		HandleCompassResult.SUCCESS,
+		SolverState.NEED_SECOND_COMPASS);
+
+	private final CompassUse precursorCityCompassUse2 = new CompassUse(
+		DELAY_AFTER_FIRST_COMPASS_LAST_PARTICLE,
+		new BlockPos(591, 136, 579),
+		new ArrayList<>(Arrays.asList(
+			new ParticleSpawn(new Vec3Comparable(590.847961, 137.589584, 579.776672), 192),
+			new ParticleSpawn(new Vec3Comparable(590.918945, 137.528259, 580.267761), 50),
+			new ParticleSpawn(new Vec3Comparable(590.985229, 137.465118, 580.759338), 56),
+			new ParticleSpawn(new Vec3Comparable(591.051147, 137.401855, 581.250916), 47),
+			new ParticleSpawn(new Vec3Comparable(591.117126, 137.338593, 581.742493), 47),
+			new ParticleSpawn(new Vec3Comparable(591.183044, 137.275330, 582.234070), 49),
+			new ParticleSpawn(new Vec3Comparable(591.249023, 137.212067, 582.725647), 60),
+			new ParticleSpawn(new Vec3Comparable(591.314941, 137.148804, 583.217224), 55),
+			new ParticleSpawn(new Vec3Comparable(591.380920, 137.085541, 583.708801), 47),
+			new ParticleSpawn(new Vec3Comparable(591.446838, 137.022263, 584.200378), 50),
+			new ParticleSpawn(new Vec3Comparable(591.512817, 136.959000, 584.691956), 39),
+			new ParticleSpawn(new Vec3Comparable(591.578735, 136.895737, 585.183533), 53),
+			new ParticleSpawn(new Vec3Comparable(591.644714, 136.832474, 585.675110), 53),
+			new ParticleSpawn(new Vec3Comparable(591.710632, 136.769211, 586.166687), 45),
+			new ParticleSpawn(new Vec3Comparable(591.776611, 136.705948, 586.658264), 79),
+			new ParticleSpawn(new Vec3Comparable(591.842529, 136.642685, 587.149841), 20),
+			new ParticleSpawn(new Vec3Comparable(591.908508, 136.579407, 587.641418), 62),
+			new ParticleSpawn(new Vec3Comparable(591.974426, 136.516144, 588.132996), 48),
+			new ParticleSpawn(new Vec3Comparable(592.040344, 136.452881, 588.624573), 40),
+			new ParticleSpawn(new Vec3Comparable(592.106323, 136.389618, 589.116150), 51),
+			new ParticleSpawn(new Vec3Comparable(590.766357, 137.556885, 579.791565), 0)
+		)),
+		HandleCompassResult.SUCCESS,
+		SolverState.SOLVED);
+
+	Vec3i precursorCitySolution = new Vec3i(604, 124, 681);
+
+	private final CompassUse jungleCompassUse1 = new CompassUse(
+		1647744980313L,
+		new BlockPos(454, 122, 459),
+		new ArrayList<>(Arrays.asList(
+			new ParticleSpawn(new Vec3Comparable(453.954895, 122.958122, 458.687866), 141),
+			new ParticleSpawn(new Vec3Comparable(453.515991, 122.760010, 458.553314), 59),
+			new ParticleSpawn(new Vec3Comparable(453.078156, 122.560112, 458.417877), 41),
+			new ParticleSpawn(new Vec3Comparable(452.640381, 122.360123, 458.282349), 50),
+			new ParticleSpawn(new Vec3Comparable(452.202606, 122.160133, 458.146851), 66),
+			new ParticleSpawn(new Vec3Comparable(451.764832, 121.960136, 458.011353), 35),
+			new ParticleSpawn(new Vec3Comparable(451.327057, 121.760147, 457.875854), 49),
+			new ParticleSpawn(new Vec3Comparable(450.889313, 121.560150, 457.740356), 50),
+			new ParticleSpawn(new Vec3Comparable(450.451538, 121.360161, 457.604858), 49),
+			new ParticleSpawn(new Vec3Comparable(450.013763, 121.160172, 457.469330), 51),
+			new ParticleSpawn(new Vec3Comparable(449.575989, 120.960175, 457.333832), 59),
+			new ParticleSpawn(new Vec3Comparable(449.138214, 120.760185, 457.198334), 41),
+			new ParticleSpawn(new Vec3Comparable(448.700439, 120.560196, 457.062836), 55),
+			new ParticleSpawn(new Vec3Comparable(448.262695, 120.360199, 456.927338), 50),
+			new ParticleSpawn(new Vec3Comparable(447.824921, 120.160210, 456.791840), 49),
+			new ParticleSpawn(new Vec3Comparable(447.387146, 119.960213, 456.656311), 53),
+			new ParticleSpawn(new Vec3Comparable(446.949371, 119.760223, 456.520813), 43),
+			new ParticleSpawn(new Vec3Comparable(446.511597, 119.560234, 456.385315), 51),
+			new ParticleSpawn(new Vec3Comparable(446.073853, 119.360237, 456.249817), 49),
+			new ParticleSpawn(new Vec3Comparable(445.636078, 119.160248, 456.114319), 56),
+			new ParticleSpawn(new Vec3Comparable(453.975647, 122.920158, 458.668488), 0)
+		)),
+		HandleCompassResult.SUCCESS,
+		SolverState.NEED_SECOND_COMPASS);
+
+	private final CompassUse jungleCompassUse2 = new CompassUse(
+		DELAY_AFTER_FIRST_COMPASS_LAST_PARTICLE,
+		new BlockPos(438, 126, 468),
+		new ArrayList<>(Arrays.asList(
+			new ParticleSpawn(new Vec3Comparable(437.701721, 127.395279, 467.455048), 139),
+			new ParticleSpawn(new Vec3Comparable(437.297852, 127.161415, 467.275604), 35),
+			new ParticleSpawn(new Vec3Comparable(436.895813, 126.927208, 467.092529), 68),
+			new ParticleSpawn(new Vec3Comparable(436.493896, 126.692986, 466.909241), 41),
+			new ParticleSpawn(new Vec3Comparable(436.091980, 126.458763, 466.725952), 54),
+			new ParticleSpawn(new Vec3Comparable(435.690033, 126.224533, 466.542664), 39),
+			new ParticleSpawn(new Vec3Comparable(435.288116, 125.990311, 466.359375), 52),
+			new ParticleSpawn(new Vec3Comparable(434.886200, 125.756088, 466.176086), 66),
+			new ParticleSpawn(new Vec3Comparable(434.484283, 125.521866, 465.992767), 40),
+			new ParticleSpawn(new Vec3Comparable(434.082367, 125.287636, 465.809479), 41),
+			new ParticleSpawn(new Vec3Comparable(433.680420, 125.053413, 465.626190), 50),
+			new ParticleSpawn(new Vec3Comparable(433.278503, 124.819191, 465.442902), 59),
+			new ParticleSpawn(new Vec3Comparable(432.876587, 124.584969, 465.259613), 54),
+			new ParticleSpawn(new Vec3Comparable(432.474670, 124.350746, 465.076294), 38),
+			new ParticleSpawn(new Vec3Comparable(432.072723, 124.116516, 464.893005), 63),
+			new ParticleSpawn(new Vec3Comparable(431.670807, 123.882294, 464.709717), 36),
+			new ParticleSpawn(new Vec3Comparable(431.268890, 123.648071, 464.526428), 64),
+			new ParticleSpawn(new Vec3Comparable(430.866974, 123.413849, 464.343140), 48),
+			new ParticleSpawn(new Vec3Comparable(430.465057, 123.179619, 464.159821), 53),
+			new ParticleSpawn(new Vec3Comparable(430.063110, 122.945396, 463.976532), 46),
+			new ParticleSpawn(new Vec3Comparable(437.732666, 127.385803, 467.381592), 1)
+		)),
+		HandleCompassResult.SUCCESS,
+		SolverState.SOLVED);
+
+	Vec3i jungleSolution = new Vec3i(343, 72, 424);
+	Vec3i jungleSolutionTempleDoor = new Vec3i(
+		jungleSolution.getX() - 57,
+		jungleSolution.getY() + 36,
+		jungleSolution.getZ() -21);
+
+	private final CompassUse magmaCompassUse1 = new CompassUse(
+		1647745029814L,
+		new BlockPos(462, 58, 550),
+		new ArrayList<>(Arrays.asList(
+			new ParticleSpawn(new Vec3Comparable(462.226898, 59.614380, 550.032654), 160),
+			new ParticleSpawn(new Vec3Comparable(462.693848, 59.609089, 549.853943), 47),
+			new ParticleSpawn(new Vec3Comparable(463.160706, 59.603809, 549.674988), 48),
+			new ParticleSpawn(new Vec3Comparable(463.627533, 59.598526, 549.496033), 136),
+			new ParticleSpawn(new Vec3Comparable(464.094391, 59.593246, 549.317017), 0),
+			new ParticleSpawn(new Vec3Comparable(464.561218, 59.587963, 549.138062), 0),
+			new ParticleSpawn(new Vec3Comparable(465.028076, 59.582684, 548.959106), 53),
+			new ParticleSpawn(new Vec3Comparable(465.494904, 59.577400, 548.780090), 48),
+			new ParticleSpawn(new Vec3Comparable(465.961761, 59.572117, 548.601135), 55),
+			new ParticleSpawn(new Vec3Comparable(466.428589, 59.566837, 548.422180), 47),
+			new ParticleSpawn(new Vec3Comparable(466.895416, 59.561554, 548.243164), 46),
+			new ParticleSpawn(new Vec3Comparable(467.362274, 59.556274, 548.064209), 53),
+			new ParticleSpawn(new Vec3Comparable(467.829102, 59.550991, 547.885254), 50),
+			new ParticleSpawn(new Vec3Comparable(468.295959, 59.545712, 547.706238), 54),
+			new ParticleSpawn(new Vec3Comparable(468.762787, 59.540428, 547.527283), 52),
+			new ParticleSpawn(new Vec3Comparable(469.229645, 59.535145, 547.348328), 105),
+			new ParticleSpawn(new Vec3Comparable(469.696472, 59.529865, 547.169312), 1),
+			new ParticleSpawn(new Vec3Comparable(470.163300, 59.524582, 546.990356), 51),
+			new ParticleSpawn(new Vec3Comparable(470.630157, 59.519302, 546.811401), 40),
+			new ParticleSpawn(new Vec3Comparable(471.096985, 59.514019, 546.632385), 49),
+			new ParticleSpawn(new Vec3Comparable(462.221954, 59.614719, 550.019165), 0)
+		)),
+		HandleCompassResult.SUCCESS,
+		SolverState.NEED_SECOND_COMPASS);
+
+	private final CompassUse magmaCompassUse2 = new CompassUse(
+		DELAY_AFTER_FIRST_COMPASS_LAST_PARTICLE,
+		new BlockPos(449, 53, 556),
+		new ArrayList<>(Arrays.asList(
+			new ParticleSpawn(new Vec3Comparable(449.120911, 54.624340, 556.108948), 204),
+			new ParticleSpawn(new Vec3Comparable(449.587433, 54.627399, 555.929138), 102),
+			new ParticleSpawn(new Vec3Comparable(450.053741, 54.630432, 555.748657), 0),
+			new ParticleSpawn(new Vec3Comparable(450.520020, 54.633465, 555.568237), 62),
+			new ParticleSpawn(new Vec3Comparable(450.986298, 54.636497, 555.387756), 38),
+			new ParticleSpawn(new Vec3Comparable(451.452606, 54.639530, 555.207275), 48),
+			new ParticleSpawn(new Vec3Comparable(451.918884, 54.642563, 555.026794), 63),
+			new ParticleSpawn(new Vec3Comparable(452.385162, 54.645596, 554.846375), 52),
+			new ParticleSpawn(new Vec3Comparable(452.851471, 54.648628, 554.665894), 35),
+			new ParticleSpawn(new Vec3Comparable(453.317749, 54.651661, 554.485413), 53),
+			new ParticleSpawn(new Vec3Comparable(453.784027, 54.654694, 554.304993), 54),
+			new ParticleSpawn(new Vec3Comparable(454.250305, 54.657726, 554.124512), 50),
+			new ParticleSpawn(new Vec3Comparable(454.716614, 54.660759, 553.944031), 55),
+			new ParticleSpawn(new Vec3Comparable(455.182892, 54.663792, 553.763550), 49),
+			new ParticleSpawn(new Vec3Comparable(455.649170, 54.666824, 553.583130), 41),
+			new ParticleSpawn(new Vec3Comparable(456.115479, 54.669857, 553.402649), 48),
+			new ParticleSpawn(new Vec3Comparable(456.581757, 54.672890, 553.222168), 54),
+			new ParticleSpawn(new Vec3Comparable(457.048035, 54.675922, 553.041687), 45),
+			new ParticleSpawn(new Vec3Comparable(457.514313, 54.678959, 552.861267), 55),
+			new ParticleSpawn(new Vec3Comparable(449.110443, 54.623035, 556.079163), 49)
+		)),
+		HandleCompassResult.SUCCESS,
+		SolverState.SOLVED);
+
+	Vec3i magmaSolution = new Vec3i(737, 56, 444);
+
+	Vec3Comparable kingMinesOrNucleusCoordsInRemnants = new Vec3Comparable(604, 100, 681);
+	Vec3Comparable odawaSolution = new Vec3Comparable(349, 110, 390);
+
+	private final CompassUse nucleusCompass = new CompassUse(
+		1647745029814L,
+		new BlockPos(512, 106, 512),
+		null,
+		HandleCompassResult.PLAYER_IN_NUCLEUS,
+		SolverState.NOT_STARTED);
+
+	private void resetSolverState() {
+		solver.initWorld();
+		systemTimeMillis = 0;
+		solver.currentTimeMillis = () -> (systemTimeMillis);
+		// These must be overridden for all test cases or an exception will be thrown when
+		// data that is only present when running in the context of Minecraft is accessed.
+		solver.keyInInventory = () -> false;
+		solver.kingsScentPresent = () -> false;
+		solver.foundCrystals = () -> EnumSet.noneOf(Crystal.class);
+	}
+
+	@BeforeEach
+	void setUp() {
+		NEUDebugLogger.logMethod = 	CrystalWishingCompassSolverTest::neuDebugLog;
+		NEUDebugLogger.allFlagsEnabled = true;
+		resetSolverState();
+	}
+
+	private void checkSolution(Solution solution) {
+		int index = 0;
+		for (CompassUse compassUse : solution.compassUses) {
+			systemTimeMillis += compassUse.timeIncrementMillis;
+			HandleCompassResult handleCompassResult = solver.handleCompassUse(compassUse.playerPos);
+			Assertions.assertEquals(compassUse.expectedHandleCompassUseResult,
+				handleCompassResult,
+				"CompassUse index " + index);
+
+			for (ParticleSpawn particle : compassUse.particles) {
+				systemTimeMillis += particle.timeIncrementMillis;
+				solver.solveUsingParticle(
+					particle.spawnLocation.xCoord,
+					particle.spawnLocation.yCoord,
+					particle.spawnLocation.zCoord,
+					systemTimeMillis);
+			}
+
+			Assertions.assertEquals(compassUse.expectedSolverState,
+				solver.getSolverState(),
+				"CompassUse index " + index);
+			if (compassUse.expectedSolverState == SolverState.SOLVED) {
+				Assertions.assertEquals(solution.expectedSolutionCoords,
+					solver.getSolutionCoords());
+			}
+
+			index++;
+		}
+	}
+
+	@Test
+	void first_compass_without_particles_sets_solver_state_to_processing_first_use() {
+		// Arrange
+		CompassUse compassUse = new CompassUse(minesOfDivanCompassUse1);
+		compassUse.particles.clear();
+		compassUse.expectedSolverState = SolverState.PROCESSING_FIRST_USE;
+
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(compassUse)),
+			Vec3i.NULL_VECTOR);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void new_compass_resets_processing_first_use_state_after_timeout() {
+		// Arrange
+		CompassUse processingFirstUseCompassUse = new CompassUse(minesOfDivanCompassUse1);
+		processingFirstUseCompassUse.particles.clear();
+		processingFirstUseCompassUse.expectedSolverState = SolverState.PROCESSING_FIRST_USE;
+		Solution processingFirstUseSolution = new Solution(
+			new ArrayList<>(Collections.singletonList(processingFirstUseCompassUse)),
+			Vec3i.NULL_VECTOR);
+		checkSolution(processingFirstUseSolution);
+		Assertions.assertEquals(SolverState.PROCESSING_FIRST_USE, solver.getSolverState());
+
+		CompassUse resetStateCompassUse = new CompassUse(jungleCompassUse1);
+		resetStateCompassUse.timeIncrementMillis = ALL_PARTICLES_MAX_MILLIS + 1;
+		resetStateCompassUse.expectedHandleCompassUseResult = HandleCompassResult.NO_PARTICLES_FOR_PREVIOUS_COMPASS;
+		resetStateCompassUse.expectedSolverState = SolverState.FAILED_TIMEOUT_NO_REPEATING;
+		Solution goodSolution = new Solution(
+			new ArrayList<>(Collections.singletonList(resetStateCompassUse)),
+			Vec3i.NULL_VECTOR);
+
+		// Act & Assert
+		checkSolution(goodSolution);
+	}
+
+	@Test
+	void first_compass_with_repeating_particles_sets_state_to_need_second_compass() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(minesOfDivanCompassUse1)),
+			Vec3i.NULL_VECTOR);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void first_compass_in_nucleus_sets_state_to_player_in_nucleus() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(nucleusCompass)),
+			Vec3i.NULL_VECTOR);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void use_while_handling_previous_returns_still_processing_first_use() {
+		// Arrange
+		CompassUse compassUse1 = new CompassUse(
+			1647528732979L,
+			new BlockPos(754, 137, 239),
+			new ArrayList<>(Collections.singletonList(
+				new ParticleSpawn(new Vec3Comparable(754.358459, 138.536407, 239.200928), 137)
+			)),
+			HandleCompassResult.SUCCESS,
+			SolverState.PROCESSING_FIRST_USE);
+
+		// STILL_PROCESSING_FIRST_USE is expected instead of LOCATION_TOO_CLOSE since the solver
+		// isn't ready for the second compass use, which includes the location check
+		CompassUse compassUse2 = new CompassUse(compassUse1);
+		compassUse2.expectedHandleCompassUseResult = HandleCompassResult.STILL_PROCESSING_PRIOR_USE;
+		compassUse2.timeIncrementMillis = 500;
+
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(compassUse1, compassUse2)),
+			Vec3i.NULL_VECTOR);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void missing_repeating_particles_sets_state_to_failed_timeout_no_repeating() {
+		CompassUse compassUse = new CompassUse(minesOfDivanCompassUse1);
+		compassUse.particles.remove(compassUse.particles.size()-1);
+		compassUse.particles.get(compassUse.particles.size()-1).timeIncrementMillis += ALL_PARTICLES_MAX_MILLIS;
+		compassUse.expectedSolverState = SolverState.FAILED_TIMEOUT_NO_REPEATING;
+
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(compassUse)),
+			Vec3i.NULL_VECTOR);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void compasses_too_close_returns_location_too_close_and_solver_state_is_still_need_second_compass() {
+		// Arrange
+		CompassUse secondCompassUse = new CompassUse(
+			DELAY_AFTER_FIRST_COMPASS_LAST_PARTICLE,
+			minesOfDivanCompassUse1.playerPos.add(2, 2, 2),
+			null,
+			HandleCompassResult.LOCATION_TOO_CLOSE,
+			SolverState.NEED_SECOND_COMPASS
+			);
+
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(minesOfDivanCompassUse1, secondCompassUse)),
+			Vec3i.NULL_VECTOR);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void second_compass_sets_solver_state_to_processing_second_use() {
+		// Arrange
+		CompassUse secondCompassUse = new CompassUse(minesOfDivanCompassUse2);
+		secondCompassUse.expectedSolverState = SolverState.PROCESSING_SECOND_USE;
+		secondCompassUse.particles.clear();
+
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(minesOfDivanCompassUse1, minesOfDivanCompassUse2)),
+			minesOfDivanSolution
+		);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void second_compass_with_repeating_particles_sets_state_to_solved() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(minesOfDivanCompassUse1, minesOfDivanCompassUse2)),
+			minesOfDivanSolution
+		);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void particles_from_first_compass_are_ignored_by_second_compass() {
+		// Arrange
+		CompassUse compassUse2 = new CompassUse(minesOfDivanCompassUse2);
+		compassUse2.particles.add(0, minesOfDivanCompassUse1.particles.get(0));
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(minesOfDivanCompassUse1, compassUse2)),
+			minesOfDivanSolution
+		);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	private void execInvalidParticlesInvalidSolution() {
+		// Arrange
+		CompassUse compassUse2 = new CompassUse(minesOfDivanCompassUse2);
+
+		// reverse the direction of the particles, moving the repeat particle
+		// to "new" end
+		compassUse2.particles.remove(compassUse2.particles.size()-1);
+		Collections.reverse(compassUse2.particles);
+		// add a new repeat particle
+		compassUse2.particles.add(new ParticleSpawn(compassUse2.particles.get(0)));
+
+		// Adjust the player position
+		compassUse2.playerPos = new BlockPos(compassUse2.particles.get(0).spawnLocation);
+		compassUse2.expectedSolverState = SolverState.FAILED_INVALID_SOLUTION;
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(minesOfDivanCompassUse1, compassUse2)),
+			Vec3i.NULL_VECTOR);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void second_compass_with_inverted_particles_sets_state_to_invalid_solution() {
+		// Arrange, Act, and Assert
+		execInvalidParticlesInvalidSolution();
+	}
+
+	@Test
+	void solution_outside_hollows_sets_state_to_invalid_solution() {
+		// Arrange
+		CompassUse compassUse1 = new CompassUse(minesOfDivanCompassUse1);
+		CompassUse compassUse2 = new CompassUse(minesOfDivanCompassUse2);
+		Vec3 offset = new Vec3(0.0, 200.0, 0.0);
+
+		compassUse1.playerPos = compassUse1.playerPos.add(offset.xCoord, offset.yCoord, offset.zCoord);
+		for (ParticleSpawn particle : compassUse1.particles) {
+			particle.spawnLocation = particle.spawnLocation.add(offset);
+		}
+
+		compassUse2.playerPos = compassUse2.playerPos.add(offset.xCoord, offset.yCoord, offset.zCoord);
+		for (ParticleSpawn particle : compassUse2.particles) {
+			particle.spawnLocation = particle.spawnLocation.add(offset);
+		}
+		compassUse2.expectedSolverState = SolverState.FAILED_INVALID_SOLUTION;
+
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(compassUse1, compassUse2)),
+			Vec3i.NULL_VECTOR);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void second_solution_can_be_solved_after_state_is_solved() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(minesOfDivanCompassUse1, minesOfDivanCompassUse2)),
+			minesOfDivanSolution
+		);
+		checkSolution(solution);
+
+		Solution solution2 = new Solution(
+			new ArrayList<>(Arrays.asList(precursorCityCompassUse1, precursorCityCompassUse2)),
+			precursorCitySolution
+		);
+
+		// Act & Assert
+		checkSolution(solution2);
+	}
+
+	@Test
+	void second_solution_can_be_solved_after_state_is_failed() {
+		// Arrange
+		execInvalidParticlesInvalidSolution();
+		Assertions.assertEquals(solver.getSolverState(), SolverState.FAILED_INVALID_SOLUTION);
+
+		Solution solution2 = new Solution(
+			new ArrayList<>(Arrays.asList(precursorCityCompassUse1, precursorCityCompassUse2)),
+			precursorCitySolution
+		);
+
+		// Act & Assert
+		checkSolution(solution2);
+	}
+
+	@Test
+	void distant_particles_are_ignored() {
+		// Arrange
+		CompassUse compassUse = new CompassUse(minesOfDivanCompassUse1);
+		compassUse.particles.get(2).spawnLocation.addVector(100.0, 100.0, 100.0);
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(minesOfDivanCompassUse1)),
+			Vec3i.NULL_VECTOR);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void possible_targets_includes_queen_and_excludes_king_when_kings_scent_is_present() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(goblinHoldoutCompassUse1)),
+			Vec3i.NULL_VECTOR);
+		solver.kingsScentPresent = () -> true;
+
+		// Act
+		checkSolution(solution);
+		EnumSet<CompassTarget> targets = solver.getPossibleTargets();
+
+		// Assert
+		Assertions.assertTrue(targets.contains(CompassTarget.GOBLIN_QUEEN));
+		Assertions.assertFalse(targets.contains(CompassTarget.GOBLIN_KING));
+	}
+
+	@Test
+	void possible_targets_excludes_king_and_includes_queen_when_kings_scent_is_not_present() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(goblinHoldoutCompassUse1)),
+			Vec3i.NULL_VECTOR);
+		solver.kingsScentPresent = () -> false;
+
+		// Act
+		checkSolution(solution);
+		EnumSet<CompassTarget> targets = solver.getPossibleTargets();
+
+		// Assert
+		Assertions.assertFalse(targets.contains(CompassTarget.GOBLIN_QUEEN));
+		Assertions.assertTrue(targets.contains(CompassTarget.GOBLIN_KING));
+	}
+
+	@Test
+	void possible_targets_excludes_odawa_and_includes_temple_when_key_in_inventory() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(jungleCompassUse1)),
+			Vec3i.NULL_VECTOR);
+		solver.keyInInventory = () -> true;
+
+		// Act
+		checkSolution(solution);
+		EnumSet<CompassTarget> targets = solver.getPossibleTargets();
+
+		// Assert
+		Assertions.assertFalse(targets.contains(CompassTarget.ODAWA));
+		Assertions.assertTrue(targets.contains(CompassTarget.JUNGLE_TEMPLE));
+	}
+
+	@Test
+	void possible_targets_includes_odawa_and_excludes_temple_when_key_not_in_inventory() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(jungleCompassUse1)),
+			Vec3i.NULL_VECTOR);
+		solver.keyInInventory = () -> false;
+
+		// Act
+		checkSolution(solution);
+		EnumSet<CompassTarget> targets = solver.getPossibleTargets();
+
+		// Assert
+		Assertions.assertTrue(targets.contains(CompassTarget.ODAWA));
+		Assertions.assertFalse(targets.contains(CompassTarget.JUNGLE_TEMPLE));
+	}
+
+	@Test
+	void possible_targets_only_contains_city_and_nucleus_when_in_remnants_without_sapphire_crystal() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(precursorCityCompassUse1)),
+			Vec3i.NULL_VECTOR);
+
+		// Act
+		checkSolution(solution);
+		EnumSet<CompassTarget> targets = solver.getPossibleTargets();
+
+		// Assert
+		Assertions.assertTrue(targets.contains(CompassTarget.PRECURSOR_CITY));
+		Assertions.assertTrue(targets.contains(CompassTarget.CRYSTAL_NUCLEUS));
+		Assertions.assertEquals(2, targets.size());
+	}
+
+	@Test
+	void possible_targets_only_contains_mines_and_nucleus_when_in_deposits_without_jade_crystal() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(minesOfDivanCompassUse1)),
+			Vec3i.NULL_VECTOR);
+
+		// Act
+		checkSolution(solution);
+		EnumSet<CompassTarget> targets = solver.getPossibleTargets();
+
+		// Assert
+		Assertions.assertTrue(targets.contains(CompassTarget.MINES_OF_DIVAN));
+		Assertions.assertTrue(targets.contains(CompassTarget.CRYSTAL_NUCLEUS));
+		Assertions.assertEquals(2, targets.size());
+	}
+
+	@Test
+	void possible_targets_only_contains_king_or_queen_and_nucleus_when_in_holdout_without_crystal() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(goblinHoldoutCompassUse1)),
+			Vec3i.NULL_VECTOR);
+
+		// Act
+		checkSolution(solution);
+		EnumSet<CompassTarget> targets = solver.getPossibleTargets();
+
+		// Assert
+		Assertions.assertTrue(targets.contains(CompassTarget.GOBLIN_KING) ||
+			targets.contains(CompassTarget.GOBLIN_QUEEN));
+		Assertions.assertTrue(targets.contains(CompassTarget.CRYSTAL_NUCLEUS));
+		Assertions.assertEquals(2, targets.size());
+	}
+
+	@Test
+	void possible_targets_only_contains_king_and_odawa_and_nucleus_when_in_jungle_without_crystal_or_key() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(jungleCompassUse1)),
+			Vec3i.NULL_VECTOR);
+
+		// Act
+		checkSolution(solution);
+		EnumSet<CompassTarget> targets = solver.getPossibleTargets();
+
+		// Assert
+		Assertions.assertTrue(targets.contains(CompassTarget.GOBLIN_KING));
+		Assertions.assertTrue(targets.contains(CompassTarget.ODAWA));
+		Assertions.assertTrue(targets.contains(CompassTarget.CRYSTAL_NUCLEUS));
+		Assertions.assertEquals(3, targets.size());
+	}
+
+	@Test
+	void possible_targets_only_contains_bal_and_nucleus_when_in_magma_fields_without_crystal() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(magmaCompassUse1)),
+			Vec3i.NULL_VECTOR);
+
+		// Act
+		checkSolution(solution);
+		EnumSet<CompassTarget> targets = solver.getPossibleTargets();
+
+		// Assert
+		Assertions.assertTrue(targets.contains(CompassTarget.BAL));
+		Assertions.assertTrue(targets.contains(CompassTarget.CRYSTAL_NUCLEUS));
+		Assertions.assertEquals(2, targets.size());
+	}
+
+	private void CheckExcludedTargetsForCrystals(
+		CompassUse compassUseToExecute,
+		ArrayList<CompassTarget> excludedTargets,
+		EnumSet<Crystal> foundCrystals) {
+		// Arrange
+		EnumSet<CompassTarget> targets;
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(compassUseToExecute)),
+			Vec3i.NULL_VECTOR);
+
+		// Act
+		checkSolution(solution);
+		targets = solver.getPossibleTargets();
+		boolean targetFound = false;
+		for (CompassTarget target : excludedTargets) {
+			if (targets.contains(target)) {
+				targetFound = true;
+				break;
+			}
+		}
+		Assertions.assertTrue(targetFound);
+
+		resetSolverState();
+		solver.foundCrystals = () -> foundCrystals;
+		checkSolution(solution);
+		targets = solver.getPossibleTargets();
+
+		// Assert
+		for (CompassTarget target : excludedTargets) {
+			Assertions.assertFalse(targets.contains(target));
+		}
+	}
+
+	@Test
+	void possible_targets_excludes_king_and_queen_when_amber_crystal_found() {
+		ArrayList<CompassTarget> excludedTargets = new ArrayList<>(Arrays.asList(
+			CompassTarget.GOBLIN_KING,
+			CompassTarget.GOBLIN_QUEEN
+		));
+		CheckExcludedTargetsForCrystals(goblinHoldoutCompassUse1, excludedTargets, EnumSet.of(Crystal.AMBER));
+	}
+
+	@Test
+	void possible_targets_excludes_odawa_and_temple_when_amethyst_crystal_found() {
+		ArrayList<CompassTarget> excludedTargets = new ArrayList<>(Arrays.asList(
+			CompassTarget.ODAWA,
+			CompassTarget.JUNGLE_TEMPLE));
+		CheckExcludedTargetsForCrystals(jungleCompassUse1, excludedTargets, EnumSet.of(Crystal.AMETHYST));
+	}
+
+	@Test
+	void possible_targets_excludes_mines_when_jade_crystal_found() {
+		ArrayList<CompassTarget> excludedTargets = new ArrayList<>(Collections.singletonList(
+			CompassTarget.MINES_OF_DIVAN));
+		CheckExcludedTargetsForCrystals(minesOfDivanCompassUse1, excludedTargets, EnumSet.of(Crystal.JADE));
+	}
+
+	@Test
+	void possible_targets_excludes_city_when_sapphire_crystal_found() {
+		ArrayList<CompassTarget> excludedTargets = new ArrayList<>(Collections.singletonList(
+			CompassTarget.PRECURSOR_CITY));
+		CheckExcludedTargetsForCrystals(precursorCityCompassUse1, excludedTargets, EnumSet.of(Crystal.SAPPHIRE));
+	}
+
+	@Test
+	void possible_targets_excludes_bal_when_topaz_crystal_found() {
+		ArrayList<CompassTarget> excludedTargets = new ArrayList<>(Collections.singletonList(
+			CompassTarget.BAL));
+		CheckExcludedTargetsForCrystals(magmaCompassUse1, excludedTargets, EnumSet.of(Crystal.TOPAZ));
+	}
+
+	@Test
+	void solver_resets_when_possible_targets_change_based_on_found_crystals() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(minesOfDivanCompassUse1)),
+			Vec3i.NULL_VECTOR);
+
+		// Act
+		checkSolution(solution);
+		systemTimeMillis += minesOfDivanCompassUse2.timeIncrementMillis;
+		solver.foundCrystals = () -> EnumSet.of(Crystal.JADE);
+		HandleCompassResult handleCompassResult = solver.handleCompassUse(minesOfDivanCompassUse2.playerPos);
+
+		// Assert
+		Assertions.assertEquals(HandleCompassResult.POSSIBLE_TARGETS_CHANGED, handleCompassResult);
+		Assertions.assertEquals(SolverState.NOT_STARTED, solver.getSolverState());
+	}
+
+	@Test
+	void solver_resets_when_possible_targets_change_based_on_location() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Collections.singletonList(minesOfDivanCompassUse1)),
+			Vec3i.NULL_VECTOR);
+
+		// Act
+		checkSolution(solution);
+		systemTimeMillis += minesOfDivanCompassUse2.timeIncrementMillis;
+		BlockPos newLocation = minesOfDivanCompassUse2.playerPos.add(-400, 0 ,0);
+		HandleCompassResult handleCompassResult = solver.handleCompassUse(newLocation);
+
+		// Assert
+		Assertions.assertEquals(HandleCompassResult.POSSIBLE_TARGETS_CHANGED, handleCompassResult);
+		Assertions.assertEquals(SolverState.NOT_STARTED, solver.getSolverState());
+	}
+
+	@Test
+	void mines_of_divan_solution_is_solved() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(minesOfDivanCompassUse1, minesOfDivanCompassUse2)),
+			minesOfDivanSolution
+		);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void jungle_temple_solution_with_key_in_inventory_is_solved() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(jungleCompassUse1, jungleCompassUse2)),
+			jungleSolutionTempleDoor
+		);
+		solver.keyInInventory = () -> true;
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void jungle_temple_solution_is_solved() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(jungleCompassUse1, jungleCompassUse2)),
+			jungleSolution
+		);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void precursor_city_solution_is_solved() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(precursorCityCompassUse1, precursorCityCompassUse2)),
+			precursorCitySolution
+		);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void goblin_king_solution_is_solved() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(goblinHoldoutCompassUse1, goblinHoldoutCompassUse2)),
+			goblinHoldoutKingSolution
+		);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	@Test
+	void bal_solution_is_solved() {
+		// Arrange
+		Solution solution = new Solution(
+			new ArrayList<>(Arrays.asList(magmaCompassUse1, magmaCompassUse2)),
+			magmaSolution
+		);
+
+		// Act & Assert
+		checkSolution(solution);
+	}
+
+	EnumSet<CompassTarget> GetSolutionTargetsHelper(
+			EnumSet<CompassTarget> possibleTargets,
+			Vec3Comparable solutionCoords,
+			int expectedSolutionCount) {
+		EnumSet<CompassTarget> solutionTargets =
+			CrystalWishingCompassSolver.getSolutionTargets(possibleTargets, solutionCoords);
+		Assertions.assertEquals(expectedSolutionCount, solutionTargets.size());
+		return solutionTargets;
+	}
+
+	@Test
+	void solutionPossibleTargets_removes_nucleus_when_coords_not_in_nucleus() {
+		// Arrange & Act
+		EnumSet<CompassTarget> solutionTargets = GetSolutionTargetsHelper(
+			EnumSet.allOf(CompassTarget.class),
+			new Vec3Comparable(minesOfDivanSolution),
+			2);
+
+		//Assert
+		Assertions.assertFalse(solutionTargets.contains(CompassTarget.CRYSTAL_NUCLEUS));
+	}
+
+	@Test
+	void solutionPossibleTargets_includes_adjacent_zones() {
+		// Arrange & Act
+		EnumSet<CompassTarget> solutionTargets = GetSolutionTargetsHelper(
+			EnumSet.allOf(CompassTarget.class),
+			kingMinesOrNucleusCoordsInRemnants,
+			2);
+
+		//Assert
+		Assertions.assertTrue(solutionTargets.contains(CompassTarget.GOBLIN_KING));
+		Assertions.assertTrue(solutionTargets.contains(CompassTarget.MINES_OF_DIVAN));
+	}
+
+	@Test
+	void solutionPossibleTargets_skips_y_filtering_when_single_possible_target() {
+		// Arrange & Act
+		EnumSet<CompassTarget> solutionTargets = GetSolutionTargetsHelper(
+			EnumSet.of(CompassTarget.GOBLIN_QUEEN),
+			new Vec3Comparable(goblinHoldoutKingSolution), // Coords not valid for queen
+			1);
+
+		//Assert
+		Assertions.assertTrue(solutionTargets.contains(CompassTarget.GOBLIN_QUEEN));
+	}
+
+	@Test
+	void solutionPossibleTargets_still_filters_non_adjacent_when_single_possible_target() {
+		// Arrange, Act and Assert
+		GetSolutionTargetsHelper(
+			EnumSet.of(CompassTarget.ODAWA),
+			kingMinesOrNucleusCoordsInRemnants,
+			0);
+	}
+
+	@Test
+	void solutionPossibleTargets_includes_king_based_on_y_coordinate() {
+		// Arrange & Act
+		EnumSet<CompassTarget> possibleTargets = EnumSet.allOf(CompassTarget.class);
+		possibleTargets.remove(CompassTarget.ODAWA);
+		EnumSet<CompassTarget> solutionTargets = GetSolutionTargetsHelper(
+			possibleTargets,
+			new Vec3Comparable(goblinHoldoutKingSolution),
+			1);
+
+		//Assert
+		Assertions.assertTrue(solutionTargets.contains(CompassTarget.GOBLIN_KING));
+	}
+
+	@Test
+	void solutionPossibleTargets_includes_odawa_based_on_y_coordinate() {
+		// Arrange & Act
+		// Arrange & Act
+		EnumSet<CompassTarget> possibleTargets = EnumSet.allOf(CompassTarget.class);
+		possibleTargets.remove(CompassTarget.GOBLIN_KING);
+		EnumSet<CompassTarget> solutionTargets = GetSolutionTargetsHelper(
+			possibleTargets,
+			new Vec3Comparable(odawaSolution),
+			1);
+
+		//Assert
+		Assertions.assertTrue(solutionTargets.contains(CompassTarget.ODAWA));
+	}
+
+	@Test
+	void solutionPossibleTargets_includes_mines_based_on_y_coordinate() {
+		// Arrange & Act
+		EnumSet<CompassTarget> possibleTargets = EnumSet.allOf(CompassTarget.class);
+		possibleTargets.remove(CompassTarget.ODAWA);
+		EnumSet<CompassTarget> solutionTargets = GetSolutionTargetsHelper(
+			possibleTargets,
+			new Vec3Comparable(minesOfDivanSolution),
+			1);
+
+		//Assert
+		Assertions.assertTrue(solutionTargets.contains(CompassTarget.MINES_OF_DIVAN));
+	}
+
+	@Test
+	void solutionPossibleTargets_includes_temple_based_on_y_coordinate() {
+		// Arrange & Act
+		EnumSet<CompassTarget> possibleTargets = EnumSet.allOf(CompassTarget.class);
+		possibleTargets.remove(CompassTarget.BAL);
+		possibleTargets.remove(CompassTarget.ODAWA);
+		possibleTargets.remove(CompassTarget.GOBLIN_KING);
+		EnumSet<CompassTarget> solutionTargets = GetSolutionTargetsHelper(
+			possibleTargets,
+			new Vec3Comparable(jungleSolution),
+			1);
+
+		//Assert
+		Assertions.assertTrue(solutionTargets.contains(CompassTarget.JUNGLE_TEMPLE));
+	}
+
+	@Test
+	void solutionPossibleTargets_includes_queen_based_on_y_coordinate() {
+		// Arrange & Act
+		EnumSet<CompassTarget> possibleTargets = EnumSet.allOf(CompassTarget.class);
+		possibleTargets.remove(CompassTarget.GOBLIN_KING);
+		possibleTargets.remove(CompassTarget.ODAWA);
+		EnumSet<CompassTarget> solutionTargets = GetSolutionTargetsHelper(
+			possibleTargets,
+			new Vec3Comparable(goblinHoldoutQueenSolution),
+			1);
+
+		//Assert
+		Assertions.assertTrue(solutionTargets.contains(CompassTarget.GOBLIN_QUEEN));
+	}
+
+	@Test
+	void solutionPossibleTargets_includes_city_based_on_y_coordinate() {
+		// Arrange & Act
+		EnumSet<CompassTarget> possibleTargets = EnumSet.allOf(CompassTarget.class);
+		possibleTargets.remove(CompassTarget.GOBLIN_KING);
+		EnumSet<CompassTarget> solutionTargets = GetSolutionTargetsHelper(
+			possibleTargets,
+			new Vec3Comparable(precursorCitySolution),
+			1);
+
+		//Assert
+		Assertions.assertTrue(solutionTargets.contains(CompassTarget.PRECURSOR_CITY));
+	}
+
+	@Test
+	void solutionPossibleTargets_includes_bal_based_on_y_coordinate() {
+		// Arrange & Act
+		EnumSet<CompassTarget> solutionTargets = GetSolutionTargetsHelper(
+			EnumSet.allOf(CompassTarget.class),
+			new Vec3Comparable(magmaSolution),
+			1);
+
+		//Assert
+		Assertions.assertTrue(solutionTargets.contains(CompassTarget.BAL));
+	}
+
+	// Represents a particle spawn, including:
+	// - Milliseconds to increment the "system time" prior to spawn.
+	// - The particle spawn location.
+	static class ParticleSpawn {
+		long timeIncrementMillis;
+		Vec3Comparable spawnLocation;
+
+		ParticleSpawn(Vec3Comparable spawnLocation, long timeIncrementMillis) {
+			this.timeIncrementMillis = timeIncrementMillis;
+			this.spawnLocation = spawnLocation;
+		}
+
+		ParticleSpawn(ParticleSpawn source) {
+			timeIncrementMillis = source.timeIncrementMillis;
+			spawnLocation = new Vec3Comparable(source.spawnLocation);
+		}
+	}
+
+	// Represents a use of the wishing compass, including:
+	// - Milliseconds to increment the "system time" prior to use.
+	// - The player's position when the compass is used.
+	// - The resulting set of particles
+	// - The expected state of the wishing compass solver after this compass is used
+	static class CompassUse {
+		long timeIncrementMillis;
+		BlockPos playerPos;
+		ArrayList<ParticleSpawn> particles;
+		HandleCompassResult expectedHandleCompassUseResult;
+		SolverState expectedSolverState;
+
+		CompassUse(long timeIncrementMillis,
+							 BlockPos playerPos,
+							 ArrayList<ParticleSpawn> particles,
+							 HandleCompassResult expectedHandleCompassUseResult,
+							 SolverState expectedState) {
+			this.timeIncrementMillis = timeIncrementMillis;
+			this.playerPos = playerPos;
+			this.particles = particles != null ? particles : new ArrayList<>();
+			this.expectedHandleCompassUseResult = expectedHandleCompassUseResult;
+			this.expectedSolverState = expectedState;
+		}
+
+		CompassUse(CompassUse source) {
+			this.timeIncrementMillis = source.timeIncrementMillis;
+			this.playerPos = new BlockPos(source.playerPos);
+			this.particles = new ArrayList<>(source.particles);
+			this.expectedHandleCompassUseResult = source.expectedHandleCompassUseResult;
+			this.expectedSolverState = source.expectedSolverState;
+		}
+	}
+
+	static class Solution {
+		ArrayList<CompassUse> compassUses;
+		Vec3i expectedSolutionCoords;
+
+		Solution(ArrayList<CompassUse> compassUses, Vec3i expectedSolutionCoords) {
+			this.compassUses = compassUses;
+			this.expectedSolutionCoords = new Vec3i(expectedSolutionCoords.getX(), expectedSolutionCoords.getY(), expectedSolutionCoords.getZ());
+		}
+	}
+
+	private static void neuDebugLog(String message) {
+		System.out.println(message);
+	}
+}
diff --git a/src/test/resources/log4j2-test.xml b/src/test/resources/log4j2-test.xml
new file mode 100644
index 00000000..25209eae
--- /dev/null
+++ b/src/test/resources/log4j2-test.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="WARN">
+    <Appenders>
+        <Console name="SysOut" target="SYSTEM_OUT">
+            <PatternLayout pattern="[%d{HH:mm:ss}] [%t/%level]: %msg{nolookups}%n" />
+        </Console>
+    </Appenders>
+    <Loggers>
+        <Root level="info">
+            <filters>
+                <MarkerFilter marker="NETWORK_PACKETS" onMatch="DENY" onMismatch="NEUTRAL" />
+            </filters>
+            <AppenderRef ref="SysOut"/>
+        </Root>
+    </Loggers>
+</Configuration>