From faf62a6ee743459bf6619b4e6add6971d5b6e5eb Mon Sep 17 00:00:00 2001
From: yoyosource <yoyosource@nidido.de>
Date: Sun, 16 Apr 2023 13:00:17 +0200
Subject: [PATCH] Add basic Explosion

Signed-off-by: yoyosource <yoyosource@nidido.de>
---
 .../features/simulator/Explosion.java         | 102 ++++++++++++++++++
 .../bausystem/features/simulator/TNT.java     |   3 +-
 2 files changed, 104 insertions(+), 1 deletion(-)
 create mode 100644 BauSystem_19/src/de/steamwar/bausystem/features/simulator/Explosion.java

diff --git a/BauSystem_19/src/de/steamwar/bausystem/features/simulator/Explosion.java b/BauSystem_19/src/de/steamwar/bausystem/features/simulator/Explosion.java
new file mode 100644
index 00000000..64d20126
--- /dev/null
+++ b/BauSystem_19/src/de/steamwar/bausystem/features/simulator/Explosion.java
@@ -0,0 +1,102 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2023  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.features.simulator;
+
+import org.bukkit.block.data.BlockData;
+import org.bukkit.block.data.Waterlogged;
+import org.bukkit.util.Vector;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Random;
+import java.util.Set;
+
+public class Explosion {
+
+    private static final Random RANDOM = new Random();
+    private static final float POWER = 4.0F;
+
+    private final TNT tnt;
+    private final double x;
+    private final double y;
+    private final double z;
+
+    private final List<TNT> entities;
+
+    public Explosion(TNT tnt, double x, double y, double z, List<TNT> entities) {
+        this.tnt = tnt;
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        this.entities = entities;
+    }
+
+    public void calculate() {
+        Set<Vector> affectedBlocks = new HashSet<>();
+        for (int i = 0; i < 16; ++i) {
+            for (int j = 0; j < 16; ++j) {
+                for (int k = 0; k < 16; ++k) {
+                    if (i == 0 || i == 15 || j == 0 || j == 15 || k == 0 || k == 15) {
+                        double d = i / 15.0F * 2.0F - 1.0F;
+                        double e = j / 15.0F * 2.0F - 1.0F;
+                        double f = k / 15.0F * 2.0F - 1.0F;
+                        double g = Math.sqrt(d * d + e * e + f * f);
+                        d /= g;
+                        e /= g;
+                        f /= g;
+
+                        float h = POWER * (0.7F + RANDOM.nextFloat() * 0.6F);
+                        double m = x;
+                        double n = y;
+                        double o = z;
+
+                        for (; h > 0.0F; h -= 0.22500001F) {
+                            int x = TNT.floor(m);
+                            int y = TNT.floor(n);
+                            int z = TNT.floor(o);
+
+                            BlockData blockData = Simulator19.getBlockData(x, y, z);
+                            if (blockData != null) {
+                                h -= (blockData.getMaterial().getBlastResistance() + 0.3F) * 0.3F;
+                            }
+                            if (blockData instanceof Waterlogged) {
+                                Waterlogged waterlogged = (Waterlogged) blockData;
+                                if (waterlogged.isWaterlogged()) {
+                                    h = 0.0F;
+                                }
+                            }
+
+                            if (h > 0.0F) {
+                                affectedBlocks.add(new Vector(x, y, z));
+                            }
+
+                            m += d * 0.30000001192092896;
+                            n += e * 0.30000001192092896;
+                            o += f * 0.30000001192092896;
+                        }
+                    }
+                }
+            }
+        }
+
+        // TODO: Add velocity change of other tnt entities
+        // System.out.println(affectedBlocks.size());
+    }
+}
diff --git a/BauSystem_19/src/de/steamwar/bausystem/features/simulator/TNT.java b/BauSystem_19/src/de/steamwar/bausystem/features/simulator/TNT.java
index bbc9c137..bb8d70e6 100644
--- a/BauSystem_19/src/de/steamwar/bausystem/features/simulator/TNT.java
+++ b/BauSystem_19/src/de/steamwar/bausystem/features/simulator/TNT.java
@@ -81,7 +81,8 @@ public class TNT {
 
         this.fuse--;
         if (this.fuse <= 0) {
-            // TODO: Add explosion
+            Explosion explosion = new Explosion(this, x, y + 0.98 * 0.0625, z);
+            explosion.calculate();
             return true;
         }
         return false;