feat: More new blocks (#361)

* feat: add stonecutter

No functionality, just block at the moment!!!

* runtime states for lightning rod & powder snow

* feat: powder snow freezing

src/main/java/cn/nukkit/Player.java

@@ -1790,6 +1790,7 @@ protected void checkBlockCollision() {
         boolean portal = false;
         boolean endPortal = false;
         boolean scaffolding = false;
+        boolean powderSnow = false;
 
         for (Block block : this.getCollisionBlocks()) {
             switch (block.getId()) {
@@ -1802,6 +1803,9 @@ protected void checkBlockCollision() {
                 case Block.SCAFFOLDING:
                     scaffolding = true;
                     break;
+                case Block.POWDER_SNOW:
+                    powderSnow = true;
+                    break;
             }
 
             block.onEntityCollide(this);
@@ -1905,6 +1909,26 @@ public void onRun() {
                 }
             }
         }
+
+        if(this.getFreezingTicks() < 140 && powderSnow) {
+            if (getFreezingTicks() == 0) {
+                this.setSprinting(false);
+            }
+            this.addFreezingTicks(1);
+            EntityFreezeEvent event = new EntityFreezeEvent(this);
+            this.server.getPluginManager().callEvent(event);
+            if (!event.isCancelled()) {
+                this.setMovementSpeed((float) Math.max(0.05, getMovementSpeed() - 3.58e-4));
+            }
+        }
+        if(!powderSnow && this.getFreezingTicks() > 0) {
+            this.addFreezingTicks(-1);
+            this.setMovementSpeed((float) Math.min(Player.DEFAULT_SPEED, getMovementSpeed() + 3.58e-4));//This magic number is to change the player's 0.05 speed within 140tick
+        }
+
+        if (this.getFreezingTicks() == 140 && this.getServer().getTick() % 40 == 0) {
+            this.attack(new EntityDamageEvent(this, EntityDamageEvent.DamageCause.FREEZING, getFrostbiteInjury()));
+        }
     }
 
     /**

src/main/java/cn/nukkit/block/BlockStonecutterBlock.java

@@ -0,0 +1,94 @@
+package cn.nukkit.block;
+
+import cn.nukkit.Player;
+import cn.nukkit.item.Item;
+import cn.nukkit.item.ItemBlock;
+import cn.nukkit.item.ItemTool;
+import cn.nukkit.math.BlockFace;
+import cn.nukkit.utils.Faceable;
+
+public class BlockStonecutterBlock extends BlockSolidMeta implements Faceable {
+
+    public BlockStonecutterBlock() {
+        this(0);
+    }
+
+    public BlockStonecutterBlock(int meta) {
+        super(meta);
+    }
+
+    @Override
+    public String getName() {
+        return "Stonecutter Block";
+    }
+
+    @Override
+    public int getId() {
+        return STONECUTTER_BLOCK;
+    }
+
+    @Override
+    public double getHardness() {
+        return 3.5;
+    }
+
+    @Override
+    public double getResistance() {
+        return 17.5;
+    }
+
+    @Override
+    public boolean canHarvestWithHand() {
+        return false;
+    }
+
+    @Override
+    public int getToolType() {
+        return ItemTool.TYPE_PICKAXE;
+    }
+
+    @Override
+    public int getToolTier() {
+        return ItemTool.TIER_WOODEN;
+    }
+
+    @Override
+    public Item[] getDrops(Item item) {
+        return new Item[]{toItem()};
+    }
+
+    @Override
+    public Item toItem() {
+        return new ItemBlock(new BlockStonecutterBlock());
+    }
+
+    @Override
+    public double getMaxY() {
+        return y + 0.5625;
+    }
+
+    @Override
+    public boolean place(Item item, Block block, Block target, BlockFace face, double fx, double fy, double fz, Player player) {
+        this.setDamage(Block.FACES2534[player != null ? player.getDirection().getHorizontalIndex() : 0]);
+        return super.place(item, block, target, face, fx, fy, fz, player);
+    }
+
+    //TODO: Add Stonecutter functionality
+    /*@Override
+    public boolean canBeActivated() {
+        return true;
+    }
+
+    @Override
+    public boolean onActivate(Item item, Player player) {
+        if (player != null) {
+            player.addWindow(new StonecutterInventory(player.getUIInventory(), this), Player.STONECUTTER_WINDOW_ID);
+        }
+        return true;
+    }*/
+
+    @Override
+    public BlockFace getBlockFace() {
+        return BlockFace.fromHorizontalIndex(this.getDamage() & 0x7);
+    }
+}

src/main/java/cn/nukkit/block/Blocks.java

@@ -345,6 +345,7 @@ public class Blocks {
         list[LECTERN] = BlockLectern.class; //449
         list[GRINDSTONE] = BlockGrindstone.class; //450
         list[BLAST_FURNACE] = BlockBlastFurnace.class; //451
+        list[STONECUTTER_BLOCK] = BlockStonecutterBlock.class; //452
         list[SMOKER] = BlockSmoker.class; //453
         list[LIT_SMOKER] = BlockSmokerLit.class; //454
         list[CARTOGRAPHY_TABLE] = BlockCartographyTable.class; //455

src/main/java/cn/nukkit/entity/Entity.java

@@ -444,6 +444,7 @@ public abstract class Entity extends Location implements Metadatable {
     public int lastUpdate;
     public int fireTicks = 0;
     public int inPortalTicks = 0;
+    public int freezingTicks = 0;//0 - 140
     public int inEndPortalTicks = 0;
     public Position portalPos = null;
 
@@ -534,6 +535,10 @@ protected float getBaseOffset() {
         return 0;
     }
 
+    public int getFrostbiteInjury() {
+        return 1;
+    }
+
     public Entity(FullChunk chunk, CompoundTag nbt) {
         this.isPlayer = this instanceof Player;
         if (this.isPlayer) {
@@ -2599,13 +2604,19 @@ protected void checkBlockCollision() {
 
         Vector3 vector = new Vector3(0, 0, 0);
         boolean portal = false;
+        boolean powderSnow = false;
 
         for (Block block : this.getCollisionBlocks()) {
             if (block.getId() == Block.NETHER_PORTAL) {
                 portal = true;
                 continue;
             }
 
+            if (block.getId() == Block.POWDER_SNOW) {
+                portal = true;
+                continue;
+            }
+
             block.onEntityCollide(this);
             block.getLevelBlockAtLayer(1).onEntityCollide(this);
             block.addVelocityToEntity(this, vector);
@@ -2616,7 +2627,7 @@ protected void checkBlockCollision() {
         } else {
             this.inPortalTicks = 0;
         }
-
+        
         if (vector.lengthSquared() > 0) {
             vector = vector.normalize();
             double d = 0.014d;
@@ -3210,6 +3221,34 @@ public List<StringTag> getAllTags() {
         return this.namedTag.getList("Tags", StringTag.class).getAll();
     }
 
+    public float getFreezingEffectStrength() {
+        return getDataPropertyFloat(DATA_FREEZING_EFFECT_STRENGTH);
+    }
+
+    public void setFreezingEffectStrength(float strength) {
+        if (strength < 0 || strength > 1)
+            throw new IllegalArgumentException("Freezing Effect Strength must be between 0 and 1");
+        this.setDataProperty(new FloatEntityData(DATA_FREEZING_EFFECT_STRENGTH, strength));
+    }
+
+    public int getFreezingTicks() {
+        return this.freezingTicks;
+    }
+
+    public void setFreezingTicks(int ticks) {
+        if (ticks < 0) this.freezingTicks = 0;
+        else if (ticks > 140) this.freezingTicks = 140;
+        else this.freezingTicks = ticks;
+        setFreezingEffectStrength(ticks / 140f);
+    }
+
+    public void addFreezingTicks(int increments) {
+        if (freezingTicks + increments < 0) this.freezingTicks = 0;
+        else if (freezingTicks + increments > 140) this.freezingTicks = 140;
+        else this.freezingTicks += increments;
+        setFreezingEffectStrength(this.freezingTicks / 140f);
+    }
+
     private boolean validateAndSetIntProperty(String identifier, int value) {
         if(!intProperties.containsKey(identifier)) {
             return false;

src/main/java/cn/nukkit/event/entity/EntityDamageEvent.java

@@ -252,7 +252,11 @@ public enum DamageCause {
         /**
          * Damage caused by standing on BlockMagma
          */
-        HOT_FLOOR
+        HOT_FLOOR,
+        /**
+         * Damage caused by temperature
+         */
+        FREEZING
     }
 
     private static class DamageModifierFloatEnumMap extends EnumMap<DamageModifier, Float> {

src/main/java/cn/nukkit/event/entity/EntityFreezeEvent.java

@@ -0,0 +1,19 @@
+package cn.nukkit.event.entity;
+
+import cn.nukkit.entity.Entity;
+import cn.nukkit.event.Cancellable;
+import cn.nukkit.event.HandlerList;
+
+public class EntityFreezeEvent extends EntityEvent implements Cancellable {
+    private final Entity entity;
+
+    private static final HandlerList handlers = new HandlerList();
+
+    public static HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public EntityFreezeEvent(Entity human) {
+        this.entity = human;
+    }
+}