player swinging events.

docs/scarpet/api/Entities.md

@@ -344,6 +344,11 @@ Boolean, true if the entity is swimming.
 
 Boolean, true if the entity is jumping.
 
+### `query(e, 'swinging')`
+
+Returns `true` if the entity is actively swinging their hand, `false` if not and `null` if swinging is not applicable to
+that entity.
+
 ### `query(e, 'gamemode')`
 
 String with gamemode, or `null` if not a player.

docs/scarpet/api/Events.md

@@ -137,6 +137,11 @@ the slot.
 ### `__on_player_swaps_hands(player)`
 Triggered when a player sends a command to swap their offhand item. Executed before the effect is applied on the server.
 
+### `__on_player_swings_hand(player, hand)`
+Triggered when a player starts swinging their hand. The event typically triggers after a corresponding event that caused it 
+(`player_uses_item`, `player_breaks_block`, etc.), but it triggers also after some failed events, like attacking the air. When
+swinging continues as an effect of an action, no new swinging events will be issued until the swinging is stopped.
+
 ### `__on_player_attacks_entity(player, entity)`
 Triggered when a player attacks entity, right before it happens server side.
 

docs/scarpet/resources/editors/idea/4.txt

@@ -24,8 +24,11 @@ __on_player_starts_sneaking(player) ->
 __on_player_starts_sprinting(player) -> 
 __on_player_stops_sneaking(player) -> 
 __on_player_stops_sprinting(player) ->
+__on_player_swings_hand(player, hand) ->
 __on_player_switches_slot(player, from, to) -> 
 __on_player_swaps_hands(player) ->
+__on_player_takes_damage(player, amount, source, entity) ->
+__on_player_trades(player, entity, buy_left, buy_right, sell) ->
 __on_player_uses_item(player, item_tuple, hand) -> 
 __on_player_wakes_up(player) ->
 __on_player_escapes_sleep(player) ->

docs/scarpet/resources/editors/npp/scarpet.xml

@@ -118,8 +118,11 @@
                 __on_player_starts_sprinting
                 __on_player_stops_sneaking
                 __on_player_stops_sprinting
+                __on_player_swings_hand
                 __on_player_switches_slot
                 __on_player_swaps_hands
+                __on_player_takes_damage
+                __on_player_trades
                 __on_player_uses_item
                 __on_player_wakes_up
                 __on_player_escapes_sleep

src/main/java/carpet/mixins/ServerPlayNetworkHandler_scarpetEventsMixin.java

@@ -1,9 +1,9 @@
 package carpet.mixins;
 
-import carpet.CarpetSettings;
 import net.minecraft.item.ItemStack;
 import net.minecraft.network.packet.c2s.play.ButtonClickC2SPacket;
 import net.minecraft.network.packet.c2s.play.CraftRequestC2SPacket;
+import net.minecraft.network.packet.c2s.play.HandSwingC2SPacket;
 import net.minecraft.network.packet.c2s.play.UpdateSelectedSlotC2SPacket;
 import net.minecraft.server.network.ServerPlayNetworkHandler;
 import net.minecraft.server.network.ServerPlayerEntity;
@@ -40,6 +40,7 @@ import static carpet.script.CarpetEventServer.Event.PLAYER_STARTS_SPRINTING;
 import static carpet.script.CarpetEventServer.Event.PLAYER_STOPS_SNEAKING;
 import static carpet.script.CarpetEventServer.Event.PLAYER_STOPS_SPRINTING;
 import static carpet.script.CarpetEventServer.Event.PLAYER_SWAPS_HANDS;
+import static carpet.script.CarpetEventServer.Event.PLAYER_SWINGS_HAND;
 import static carpet.script.CarpetEventServer.Event.PLAYER_SWITCHES_SLOT;
 import static carpet.script.CarpetEventServer.Event.PLAYER_USES_ITEM;
 import static carpet.script.CarpetEventServer.Event.PLAYER_WAKES_UP;
@@ -266,4 +267,17 @@ public class ServerPlayNetworkHandler_scarpetEventsMixin
             PLAYER_SWITCHES_SLOT.onSlotSwitch(player, player.inventory.selectedSlot, packet.getSelectedSlot());
         }
     }
+
+    @Inject(method = "onHandSwing", at = @At(
+            value = "INVOKE", target =
+            "Lnet/minecraft/server/network/ServerPlayerEntity;updateLastActionTime()V",
+            shift = At.Shift.BEFORE)
+    )
+    private void onSwing(HandSwingC2SPacket packet, CallbackInfo ci)
+    {
+        if (PLAYER_SWINGS_HAND.isNeeded() && !player.handSwinging)
+        {
+            PLAYER_SWINGS_HAND.onHandAction(player, packet.getHand());
+        }
+    }
 }

src/main/java/carpet/script/CarpetEventServer.java

@@ -693,6 +693,18 @@ public class CarpetEventServer
                 handler.call( () -> Collections.singletonList(new EntityValue(player)), player::getCommandSource);
             }
         };
+        public static final Event PLAYER_SWINGS_HAND = new Event("player_swings_hand", 2, false)
+        {
+            @Override
+            public void onHandAction(ServerPlayerEntity player, Hand hand)
+            {
+                handler.call( () -> Arrays.asList(
+                            new EntityValue(player),
+                            StringValue.of(hand == Hand.MAIN_HAND ? "mainhand" : "offhand")
+                        )
+                        , player::getCommandSource);
+            }
+        };
         public static final Event PLAYER_TAKES_DAMAGE = new Event("player_takes_damage", 4, false)
         {
             @Override
@@ -938,6 +950,7 @@ public class CarpetEventServer
         public void onBlockBroken(ServerPlayerEntity player, BlockPos pos, BlockState previousBS) { }
         public void onBlockPlaced(ServerPlayerEntity player, BlockPos pos, Hand enumhand, ItemStack itemstack) { }
         public void onEntityHandAction(ServerPlayerEntity player, Entity entity, Hand enumhand) { }
+        public void onHandAction(ServerPlayerEntity player, Hand enumhand) { }
         public void onEntityAction(Entity entity) { }
         public void onDimensionChange(ServerPlayerEntity player, Vec3d from, Vec3d to, RegistryKey<World> fromDim, RegistryKey<World> dimTo) {}
         public void onDamage(Entity target, float amount, DamageSource source) { }

src/main/java/carpet/script/value/EntityValue.java

@@ -512,6 +512,11 @@ public class EntityValue extends Value
         put("sneaking", (e, a) -> e.isSneaking()?Value.TRUE:Value.FALSE);
         put("sprinting", (e, a) -> e.isSprinting()?Value.TRUE:Value.FALSE);
         put("swimming", (e, a) -> e.isSwimming()?Value.TRUE:Value.FALSE);
+        put("swinging", (e, a) -> {
+            if (e instanceof LivingEntity) return new NumericValue(((LivingEntity) e).handSwinging);
+            return Value.NULL;
+        });
+
         put("air", (e, a) -> new NumericValue(e.getAir()));
         put("persistence", (e, a) -> {
             if (e instanceof MobEntity) return new NumericValue(((MobEntity) e).isPersistent());

src/main/resources/assets/carpet/scripts/event_test.sc

@@ -303,3 +303,12 @@ __on_player_trades(player, entity, buy_left, buy_right, sell) ->
     print('  - buy_right: '+ buy_right);
     print('  - sell: '+ sell)
 );
+
+__on_player_swings_hand(player, hand) ->
+(
+	print('');
+	print('__on_player_swings_hand(player, hand)');
+	print('player swings hand:');
+	print('  - player: '+player);
+	print('  - hand: '+hand);
+);