/**
  * Moving diagonally through an "empty corner", seen from above:<br>
  * ox<br>
  * xo
  */
 @Test
 public void testEmptyCorner() {
   FakeBlockCache bc = new FakeBlockCache();
   // The "empty corner" setup.
   bc.set(10, 70, 10, Material.STONE);
   bc.set(11, 70, 11, Material.STONE);
   // Ground.
   for (int x = 9; x < 13; x++) {
     for (int z = 9; z < 13; z++) {
       bc.set(x, 69, z, Material.STONE);
     }
   }
   PassableRayTracing rt = new PassableRayTracing();
   rt.setBlockCache(bc);
   // TODO: More Directions, over a corner, sides, etc.
   double[][] setups =
       new double[][] {
         // Slightly off the middle (11, y, 11)
         {11.4, 70.0, 10.4, 10.6, 70.0, 11.4},
         // Going exactly through the middle (11, y, 11)
         {11.4, 70.0, 10.6, 10.6, 70.0, 11.4},
         {11.5, 70.0, 10.5, 10.5, 70.0, 11.5},
         // {11.5, 70.0, 10.5, 10.99999999999, 70.0, 11.00000000001}, // TODO: Craft something here
       };
   TestRayTracing.runCoordinates(rt, setups, true, false, 3.0, true);
   rt.cleanup();
   bc.cleanup();
 }
 /**
  * Moving diagonally through an "empty corner", seen from above:<br>
  * ox<br>
  * xo
  */
 @Test
 public void testEmptyCorner() {
   FakeBlockCache bc = new FakeBlockCache();
   // The "empty corner" setup.
   for (int y = 70; y < 73; y++) {
     bc.set(10, y, 10, Material.STONE);
     bc.set(11, y, 11, Material.STONE);
   }
   // Ground.
   for (int x = 9; x < 13; x++) {
     for (int z = 9; z < 13; z++) {
       bc.set(x, 69, z, Material.STONE);
     }
   }
   // TODO: Make work with strict set to false.
   // InteractRayTracing rt = new InteractRayTracing(true);
   InteractRayTracing rt = new InteractRayTracing(false);
   rt.setBlockCache(bc);
   // TODO: More Directions, also just behind the corner.
   double[][] setups =
       new double[][] {
         // Slightly off the middle (11, y, 11)
         {11.4, 70.0, 10.4, 10.6, 70.0, 11.4},
         // Going exactly through the middle (11, y, 11)
         {11.4, 70.0, 10.6, 10.6, 70.0, 11.4},
         {11.5, 70.0, 10.5, 10.5, 70.0, 11.5},
       };
   TestRayTracing.runCoordinates(rt, setups, true, false, 3.0, true);
   rt.cleanup();
   bc.cleanup();
 }
  @Test
  public void testThroughOneBlock() {
    FakeBlockCache bc = new FakeBlockCache();
    bc.set(0, 0, 0, Material.STONE);
    PassableRayTracing rt = new PassableRayTracing();
    rt.setBlockCache(bc);
    double[][] setups =
        new double[][] {
          // Through the middle of the block.
          {0.5, 0.5, -0.5, 0.5, 0.5, 1.5},
          {-0.5, 0.5, 0.5, 1.5, 0.5, 0.5},
          {0.5, -0.5, 0.5, 0.5, 1.5, 0.5},
          // Along the edges.
          {0.5, 0.0, -0.5, 0.5, 0.0, 1.5},
          {-0.5, 0.0, 0.5, 1.5, 0.0, 0.5},
          // Exactly diagonal.
          {-0.5, -0.5, -0.5, 1.5, 1.5, 1.5}, // 3d
          {-0.5, 0.0, -0.5, 1.5, 0.0, 1.5}, // 2d
          // Through a corner.
          {1.2, 0.5, 0.5, 0.5, 0.5, 1.2},

          // TODO: More of each and other... + generic set-ups?
        };
    TestRayTracing.runCoordinates(rt, setups, true, false, 3.0, true);
    rt.cleanup();
    bc.cleanup();
  }
 @Test
 public void testGroundSteps() {
   FakeBlockCache bc = new FakeBlockCache();
   // Ground using 0.5 high step blocks.
   final double[] stepBounds = new double[] {0.0, 0.0, 0.0, 1.0, 0.5, 1.0};
   for (int x = 0; x < 16; x++) {
     for (int z = 0; z < 16; z++) {
       // STONE = HACK (CompatBukkit block-flags problem).
       bc.set(x, 65, z, Material.STONE, stepBounds);
     }
   }
   PassableRayTracing rt = new PassableRayTracing();
   rt.setBlockCache(bc);
   // TODO: More Directions, also from air underneath to ground).
   double[][] noCollision =
       new double[][] {
         {1.3, 65.5, 2.43, 5.25, 65.5, 7.12},
       };
   TestRayTracing.runCoordinates(rt, noCollision, false, true, 3.0, true);
   double[][] shouldCollide =
       new double[][] {
         {1.3, 65.1, 2.43, 2.3, 65.1, 7.43},
         {1.3, 65.0, 2.43, 2.3, 65.0, 7.43},
         {1.3, 65.5, 2.43, 1.3, 65.4, 2.43},
         {1.3, 65.5, 2.43, 5.25, 65.4, 7.12},
         {1.3, 65.4, 2.43, 1.3, 65.4, 2.43}, // No distance.
       };
   TestRayTracing.runCoordinates(rt, shouldCollide, true, false, 3.0, true);
   rt.cleanup();
   bc.cleanup();
 }
 @Test
 public void testGround() {
   FakeBlockCache bc = new FakeBlockCache();
   // Ground using full blocks.
   for (int x = 0; x < 16; x++) {
     for (int z = 0; z < 16; z++) {
       bc.set(x, 65, z, Material.STONE);
     }
   }
   PassableRayTracing rt = new PassableRayTracing();
   rt.setBlockCache(bc);
   // TODO: More Directions, also from air underneath to ground).
   double[][] noCollision =
       new double[][] {
         {1.3, 66.0, 2.43, 5.25, 66.0, 7.12},
       };
   TestRayTracing.runCoordinates(rt, noCollision, false, true, 3.0, true);
   double[][] shouldCollide =
       new double[][] {
         {1.3, 65.1, 2.43, 2.3, 65.1, 4.43},
         {1.3, 65.0, 2.43, 2.3, 65.0, 4.43},
         {1.3, 66.0, 2.43, 1.3, 65.9, 2.43},
         {1.3, 66.0, 2.43, 5.25, 65.9, 7.12},
         {1.3, 65.4, 2.43, 1.3, 65.4, 2.43}, // No distance.
       };
   TestRayTracing.runCoordinates(rt, shouldCollide, true, false, 3.0, true);
   rt.cleanup();
   bc.cleanup();
 }
 /** Test cases taken from ingame logging. */
 @Test
 public void testIngame() {
   // Circle around the corners of 4 blocks with left button pressed down (random sample).
   // Bad end coords (should fail):
   {
     FakeBlockCache fbc = new FakeBlockCache();
     double[] _fb = new double[] {0.0, 0.0, 0.0, 1.0, 1.0, 1.0};
     fbc.set(142, 67, 221, 3, 0, _fb);
     fbc.set(142, 67, 217, 3, 0, _fb);
     fbc.set(142, 69, 219, 0);
     fbc.set(142, 68, 218, 2, 0, _fb);
     fbc.set(142, 70, 220, 0);
     fbc.set(142, 71, 217, 0);
     fbc.set(142, 71, 221, 0);
     fbc.set(143, 67, 218, 3, 0, _fb);
     fbc.set(143, 68, 217, 2, 0, _fb);
     fbc.set(143, 68, 221, 2, 0, _fb);
     fbc.set(143, 69, 220, 0);
     fbc.set(143, 70, 219, 0);
     fbc.set(143, 71, 218, 0);
     fbc.set(144, 67, 219, 3, 0, _fb);
     fbc.set(144, 68, 220, 2, 0, _fb);
     fbc.set(144, 69, 217, 0);
     fbc.set(
         144,
         69,
         221,
         31,
         1,
         new double[] {
           0.09999999403953552,
           0.0,
           0.09999999403953552,
           0.8999999761581421,
           0.800000011920929,
           0.8999999761581421
         });
     fbc.set(144, 70, 218, 0);
     fbc.set(144, 71, 219, 0);
     fbc.set(145, 67, 220, 3, 0, _fb);
     fbc.set(145, 68, 219, 2, 0, _fb);
     fbc.set(145, 69, 218, 0);
     fbc.set(145, 70, 217, 0);
     fbc.set(145, 70, 221, 0);
     fbc.set(145, 71, 220, 0);
     fbc.set(142, 68, 217, 2, 0, _fb);
     fbc.set(142, 68, 221, 2, 0, _fb);
     fbc.set(142, 67, 218, 3, 0, _fb);
     fbc.set(142, 69, 220, 0);
     fbc.set(142, 70, 219, 0);
     fbc.set(142, 71, 218, 0);
     fbc.set(143, 67, 217, 3, 0, _fb);
     fbc.set(143, 67, 221, 3, 0, _fb);
     fbc.set(143, 68, 218, 49, 0, _fb);
     fbc.set(143, 69, 219, 0);
     fbc.set(143, 70, 220, 0);
     fbc.set(143, 71, 217, 0);
     fbc.set(143, 71, 221, 0);
     fbc.set(144, 67, 220, 3, 0, _fb);
     fbc.set(144, 68, 219, 49, 0, _fb);
     fbc.set(144, 69, 218, 0);
     fbc.set(144, 70, 217, 0);
     fbc.set(144, 70, 221, 0);
     fbc.set(144, 71, 220, 0);
     fbc.set(145, 67, 219, 3, 0, _fb);
     fbc.set(145, 68, 220, 2, 0, _fb);
     fbc.set(145, 69, 217, 0);
     fbc.set(
         145,
         69,
         221,
         50,
         5,
         new double[] {
           0.4000000059604645,
           0.0,
           0.4000000059604645,
           0.6000000238418579,
           0.6000000238418579,
           0.6000000238418579
         });
     fbc.set(145, 70, 218, 0);
     fbc.set(145, 71, 219, 0);
     fbc.set(142, 67, 219, 3, 0, _fb);
     fbc.set(142, 70, 218, 0);
     fbc.set(
         142,
         69,
         221,
         31,
         1,
         new double[] {
           0.09999999403953552,
           0.0,
           0.09999999403953552,
           0.8999999761581421,
           0.800000011920929,
           0.8999999761581421
         });
     fbc.set(142, 69, 217, 0);
     fbc.set(142, 68, 220, 2, 0, _fb);
     fbc.set(142, 71, 219, 0);
     fbc.set(143, 67, 220, 3, 0, _fb);
     fbc.set(143, 68, 219, 49, 0, _fb);
     fbc.set(143, 69, 218, 0);
     fbc.set(143, 70, 217, 0);
     fbc.set(143, 70, 221, 0);
     fbc.set(143, 71, 220, 0);
     fbc.set(144, 67, 217, 3, 0, _fb);
     fbc.set(144, 67, 221, 3, 0, _fb);
     fbc.set(144, 68, 218, 49, 0, _fb);
     fbc.set(144, 69, 219, 0);
     fbc.set(144, 70, 220, 0);
     fbc.set(144, 71, 217, 0);
     fbc.set(144, 71, 221, 0);
     fbc.set(145, 67, 218, 3, 0, _fb);
     fbc.set(145, 68, 217, 2, 0, _fb);
     fbc.set(145, 68, 221, 2, 0, _fb);
     fbc.set(145, 69, 220, 0);
     fbc.set(145, 70, 219, 0);
     fbc.set(145, 71, 218, 0);
     fbc.set(142, 68, 219, 2, 0, _fb);
     fbc.set(142, 70, 217, 0);
     fbc.set(142, 67, 220, 3, 0, _fb);
     fbc.set(
         142,
         69,
         218,
         31,
         1,
         new double[] {
           0.09999999403953552,
           0.0,
           0.09999999403953552,
           0.8999999761581421,
           0.800000011920929,
           0.8999999761581421
         });
     fbc.set(142, 70, 221, 0);
     fbc.set(142, 71, 220, 0);
     fbc.set(143, 67, 219, 3, 0, _fb);
     fbc.set(143, 68, 220, 2, 0, _fb);
     fbc.set(143, 69, 217, 0);
     fbc.set(143, 69, 221, 0);
     fbc.set(143, 70, 218, 0);
     fbc.set(143, 71, 219, 0);
     fbc.set(144, 67, 218, 3, 0, _fb);
     fbc.set(144, 68, 217, 2, 0, _fb);
     fbc.set(144, 68, 221, 2, 0, _fb);
     fbc.set(144, 69, 220, 0);
     fbc.set(144, 70, 219, 0);
     fbc.set(144, 71, 218, 0);
     fbc.set(145, 67, 217, 3, 0, _fb);
     fbc.set(145, 67, 221, 3, 0, _fb);
     fbc.set(145, 68, 218, 2, 0, _fb);
     fbc.set(145, 69, 219, 0);
     fbc.set(145, 70, 220, 0);
     fbc.set(145, 71, 217, 0);
     fbc.set(145, 71, 221, 0);
     InteractRayTracing rt = new CenteredInteractRayTracing(false, 144, 68, 218);
     rt.setBlockCache(fbc);
     TestRayTracing.runCoordinates(
         rt,
         new double[] {
           144.01901074886095,
           70.62,
           220.1221052415879,
           144.07776715103876,
           68.99423513239826,
           219.0
         },
         true,
         false,
         0.0,
         false,
         "ingame");
     rt.cleanup();
     fbc.cleanup();
   }
 }