Tried to create manual Explosion without player damage. Did not work...

src/main/java/com/sosnitzka/ztic_addon/util/ZWorld.java

@@ -0,0 +1,39 @@
+package com.sosnitzka.ztic_addon.util;
+
+import com.sosnitzka.ztic_addon.util.traits.ZExplosion;
+import net.minecraft.entity.Entity;
+import net.minecraft.profiler.Profiler;
+import net.minecraft.world.Explosion;
+import net.minecraft.world.World;
+import net.minecraft.world.WorldProvider;
+import net.minecraft.world.chunk.IChunkProvider;
+import net.minecraft.world.storage.ISaveHandler;
+import net.minecraft.world.storage.WorldInfo;
+
+/**
+ * Created by Robert on 11.06.2016.
+ */
+public class ZWorld extends World {
+    protected ZWorld(ISaveHandler saveHandlerIn, WorldInfo info, WorldProvider providerIn, Profiler profilerIn, boolean client) {
+        super(saveHandlerIn, info, providerIn, profilerIn, client);
+    }
+
+    @Override
+    protected IChunkProvider createChunkProvider() {
+        return null;
+    }
+
+    @Override
+    protected boolean isChunkLoaded(int x, int z, boolean allowEmpty) {
+        return false;
+    }
+
+    @Override
+    public Explosion newExplosion(Entity entityIn, double x, double y, double z, float strength, boolean isFlaming, boolean isSmoking) {
+        ZExplosion explosion = new ZExplosion(this, entityIn, x, y, z, strength, isFlaming, isSmoking);
+        if (net.minecraftforge.event.ForgeEventFactory.onExplosionStart(this, explosion)) return explosion;
+        explosion.doExplosionA();
+        explosion.doExplosionB(true);
+        return explosion;
+    }
+}

src/main/java/com/sosnitzka/ztic_addon/util/traits/TraitInstable.java

@@ -1,5 +1,6 @@
 package com.sosnitzka.ztic_addon.util.traits;
 
+import com.sosnitzka.ztic_addon.util.ZWorld;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.item.ItemStack;
@@ -23,9 +24,12 @@ public class TraitInstable extends AbstractTrait {
 
     @Override
     public void afterBlockBreak(ItemStack tool, World world, IBlockState state, BlockPos pos, EntityLivingBase player, boolean wasEffective) {
-        if (MathHelper.getRandomIntegerInRange(random, 0, 100) < 2) {
+        ZWorld world2 = (ZWorld) world;
+        if (MathHelper.getRandomIntegerInRange(random, 0, 100) > 2) {
             if (!world.isRemote)
-                world.newExplosion(null, pos.getX(), pos.getY(), pos.getZ(), 2f, true, true);
+
+                world2.newExplosion(null, pos.getX(), pos.getY(), pos.getZ(), 2f, true, true);
+
         }
     }
 

src/main/java/com/sosnitzka/ztic_addon/util/traits/ZExplosion.java

@@ -0,0 +1,162 @@
+package com.sosnitzka.ztic_addon.util.traits;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
+import net.minecraft.block.material.Material;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.enchantment.EnchantmentProtection;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.util.DamageSource;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.MathHelper;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.world.Explosion;
+import net.minecraft.world.World;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+import java.util.Set;
+
+/**
+ * Created by Robert on 11.06.2016.
+ */
+public class ZExplosion extends Explosion {
+
+    /**
+     * whether or not the explosion sets fire to blocks around it
+     */
+    private final boolean isFlaming;
+    /**
+     * whether or not this explosion spawns smoke particles
+     */
+    private final boolean isSmoking;
+    private final Random explosionRNG;
+    private final World worldObj;
+    private final double explosionX;
+    private final double explosionY;
+    private final double explosionZ;
+    private final Entity exploder;
+    private final float explosionSize;
+    private final List<BlockPos> affectedBlockPositions;
+    private final Map<EntityPlayer, Vec3d> playerKnockbackMap;
+    private final Vec3d position;
+
+    public ZExplosion(World worldIn, Entity entityIn, double x, double y, double z, float size, boolean flaming, boolean smoking) {
+        super(worldIn, entityIn, x, y, z, size, flaming, smoking);
+        this.explosionRNG = new Random();
+        this.affectedBlockPositions = Lists.<BlockPos>newArrayList();
+        this.playerKnockbackMap = Maps.<EntityPlayer, Vec3d>newHashMap();
+        this.worldObj = worldIn;
+        this.exploder = entityIn;
+        this.explosionSize = size;
+        this.explosionX = x;
+        this.explosionY = y;
+        this.explosionZ = z;
+        this.isFlaming = flaming;
+        this.isSmoking = smoking;
+        this.position = new Vec3d(explosionX, explosionY, explosionZ);
+    }
+
+    @Override
+    public void doExplosionA() {
+        Set<BlockPos> set = Sets.<BlockPos>newHashSet();
+        int i = 16;
+
+        for (int j = 0; j < 16; ++j) {
+            for (int k = 0; k < 16; ++k) {
+                for (int l = 0; l < 16; ++l) {
+                    if (j == 0 || j == 15 || k == 0 || k == 15 || l == 0 || l == 15) {
+                        double d0 = (double) ((float) j / 15.0F * 2.0F - 1.0F);
+                        double d1 = (double) ((float) k / 15.0F * 2.0F - 1.0F);
+                        double d2 = (double) ((float) l / 15.0F * 2.0F - 1.0F);
+                        double d3 = Math.sqrt(d0 * d0 + d1 * d1 + d2 * d2);
+                        d0 = d0 / d3;
+                        d1 = d1 / d3;
+                        d2 = d2 / d3;
+                        float f = this.explosionSize * (0.7F + this.worldObj.rand.nextFloat() * 0.6F);
+                        double d4 = this.explosionX;
+                        double d6 = this.explosionY;
+                        double d8 = this.explosionZ;
+
+                        for (float f1 = 0.3F; f > 0.0F; f -= 0.22500001F) {
+                            BlockPos blockpos = new BlockPos(d4, d6, d8);
+                            IBlockState iblockstate = this.worldObj.getBlockState(blockpos);
+
+                            if (iblockstate.getMaterial() != Material.AIR) {
+                                float f2 = this.exploder != null ? this.exploder.getExplosionResistance(this, this.worldObj, blockpos, iblockstate) : iblockstate.getBlock().getExplosionResistance(worldObj, blockpos, (Entity) null, this);
+                                f -= (f2 + 0.3F) * 0.3F;
+                            }
+
+                            if (f > 0.0F && (this.exploder == null || this.exploder.verifyExplosion(this, this.worldObj, blockpos, iblockstate, f))) {
+                                set.add(blockpos);
+                            }
+
+                            d4 += d0 * 0.30000001192092896D;
+                            d6 += d1 * 0.30000001192092896D;
+                            d8 += d2 * 0.30000001192092896D;
+                        }
+                    }
+                }
+            }
+        }
+
+        this.affectedBlockPositions.addAll(set);
+        float f3 = this.explosionSize * 2.0F;
+        int k1 = MathHelper.floor_double(this.explosionX - (double) f3 - 1.0D);
+        int l1 = MathHelper.floor_double(this.explosionX + (double) f3 + 1.0D);
+        int i2 = MathHelper.floor_double(this.explosionY - (double) f3 - 1.0D);
+        int i1 = MathHelper.floor_double(this.explosionY + (double) f3 + 1.0D);
+        int j2 = MathHelper.floor_double(this.explosionZ - (double) f3 - 1.0D);
+        int j1 = MathHelper.floor_double(this.explosionZ + (double) f3 + 1.0D);
+        List<Entity> list = this.worldObj.getEntitiesWithinAABBExcludingEntity(this.exploder, new AxisAlignedBB((double) k1, (double) i2, (double) j2, (double) l1, (double) i1, (double) j1));
+        net.minecraftforge.event.ForgeEventFactory.onExplosionDetonate(this.worldObj, this, list, f3);
+        Vec3d vec3d = new Vec3d(this.explosionX, this.explosionY, this.explosionZ);
+
+        for (int k2 = 0; k2 < list.size(); ++k2) {
+            Entity entity = (Entity) list.get(k2);
+
+            if (!entity.isImmuneToExplosions()) {
+                double d12 = entity.getDistance(this.explosionX, this.explosionY, this.explosionZ) / (double) f3;
+
+                if (d12 <= 1.0D) {
+                    double d5 = entity.posX - this.explosionX;
+                    double d7 = entity.posY + (double) entity.getEyeHeight() - this.explosionY;
+                    double d9 = entity.posZ - this.explosionZ;
+                    double d13 = (double) MathHelper.sqrt_double(d5 * d5 + d7 * d7 + d9 * d9);
+
+                    if (d13 != 0.0D) {
+                        d5 = d5 / d13;
+                        d7 = d7 / d13;
+                        d9 = d9 / d13;
+                        double d14 = (double) this.worldObj.getBlockDensity(vec3d, entity.getEntityBoundingBox());
+                        double d10 = (1.0D - d12) * d14;
+                        if (!(entity instanceof EntityPlayer))
+                            entity.attackEntityFrom(DamageSource.causeExplosionDamage(this), (float) ((int) ((d10 * d10 + d10) / 2.0D * 7.0D * (double) f3 + 1.0D)));
+                        double d11 = 1.0D;
+
+                        if (entity instanceof EntityLivingBase) {
+                            d11 = EnchantmentProtection.getBlastDamageReduction((EntityLivingBase) entity, d10);
+                        }
+
+                        entity.motionX += d5 * d11;
+                        entity.motionY += d7 * d11;
+                        entity.motionZ += d9 * d11;
+
+                        if (entity instanceof EntityPlayer) {
+                            EntityPlayer entityplayer = (EntityPlayer) entity;
+
+                            if (!entityplayer.isSpectator() && (!entityplayer.isCreative() || !entityplayer.capabilities.isFlying)) {
+                                this.playerKnockbackMap.put(entityplayer, new Vec3d(d5 * d10, d7 * d10, d9 * d10));
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}