feat: Add gun aiming and shooting

src/main/java/one/oktw/galaxy/mixin/event/MixinPlayerDropItem_NetworkHandler.java

@@ -0,0 +1,53 @@
+/*
+ * OKTW Galaxy Project
+ * Copyright (C) 2018-2022
+ *
+ * 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
+ * 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 one.oktw.galaxy.mixin.event;
+
+import net.minecraft.network.packet.c2s.play.PlayerActionC2SPacket;
+import net.minecraft.server.network.ServerPlayNetworkHandler;
+import net.minecraft.server.network.ServerPlayerEntity;
+import one.oktw.galaxy.Main;
+import one.oktw.galaxy.event.type.PlayerDropItemEvent;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(ServerPlayNetworkHandler.class)
+public class MixinPlayerDropItem_NetworkHandler {
+    @Shadow
+    public ServerPlayerEntity player;
+
+    @Inject(
+        method = "onPlayerAction",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/server/network/ServerPlayerEntity;dropSelectedItem(Z)Z",
+            shift = At.Shift.BEFORE
+        ), cancellable = true)
+    private void onPlayerAction(PlayerActionC2SPacket packet, CallbackInfo ci) {
+        Main main = Main.Companion.getMain();
+        if (main != null && main.getEventManager().emit(new PlayerDropItemEvent(player)).getCancel()) {
+            ci.cancel();
+            player.currentScreenHandler.syncState();
+        }
+    }
+
+
+}

src/main/java/one/oktw/galaxy/mixin/event/MixinPlayerPickupItem_ItemEntity.java

@@ -0,0 +1,45 @@
+/*
+ * OKTW Galaxy Project
+ * Copyright (C) 2018-2022
+ *
+ * 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
+ * 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 one.oktw.galaxy.mixin.event;
+
+import net.minecraft.entity.ItemEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.server.network.ServerPlayerEntity;
+import one.oktw.galaxy.Main;
+import one.oktw.galaxy.event.type.PlayerPickupItemEvent;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(ItemEntity.class)
+public class MixinPlayerPickupItem_ItemEntity {
+    @Inject(
+        method = "onPlayerCollision",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/entity/player/PlayerEntity;triggerItemPickedUpByEntityCriteria(Lnet/minecraft/entity/ItemEntity;)V",
+            shift = At.Shift.AFTER
+        ))
+    private void onPlayerCollision(PlayerEntity player, CallbackInfo ci) {
+        Main main = Main.Companion.getMain();
+        if (main == null) return;
+        main.getEventManager().emit(new PlayerPickupItemEvent((ServerPlayerEntity) player));
+    }
+}

src/main/java/one/oktw/galaxy/mixin/event/MixinHotBarSlotUpdate_ScreenHandlerListener.java → src/main/java/one/oktw/galaxy/mixin/event/MixinPlayerSwapItemInHand_NetworkHandler.java

@@ -1,6 +1,6 @@
 /*
  * OKTW Galaxy Project
- * Copyright (C) 2018-2021
+ * Copyright (C) 2018-2022
  *
  * 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
@@ -18,31 +18,27 @@
 
 package one.oktw.galaxy.mixin.event;
 
-import net.minecraft.item.ItemStack;
-import net.minecraft.screen.ScreenHandler;
+import net.minecraft.network.packet.c2s.play.PlayerActionC2SPacket;
+import net.minecraft.server.network.ServerPlayNetworkHandler;
 import net.minecraft.server.network.ServerPlayerEntity;
 import one.oktw.galaxy.Main;
-import one.oktw.galaxy.event.type.HotBarSlotUpdateEvent;
+import one.oktw.galaxy.event.type.PlayerSwapItemInHandEvent;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
-@Mixin(targets = {"net/minecraft/server/network/ServerPlayerEntity$2"})
-public class MixinHotBarSlotUpdate_ScreenHandlerListener {
-    @Shadow(aliases = {"field_29183"})
-    private ServerPlayerEntity player;
+@Mixin(ServerPlayNetworkHandler.class)
+public class MixinPlayerSwapItemInHand_NetworkHandler {
+    @Shadow
+    public ServerPlayerEntity player;
 
-    @Inject(
-        method = "onSlotUpdate(Lnet/minecraft/screen/ScreenHandler;ILnet/minecraft/item/ItemStack;)V",
-        at = @At(value = "RETURN")
-    )
-    private void onSlotUpdate(ScreenHandler handler, int slotId, ItemStack stack, CallbackInfo ci) {
+    @Inject(method = "onPlayerAction", at = @At(value = "INVOKE", target = "Lnet/minecraft/server/network/ServerPlayerEntity;clearActiveItem()V", shift = At.Shift.AFTER))
+    private void onPlayerAction(PlayerActionC2SPacket packet, CallbackInfo ci) {
         Main main = Main.Companion.getMain();
         if (main == null) return;
-        if (slotId >= 36 && slotId <= 45) {
-            main.getEventManager().emit(new HotBarSlotUpdateEvent(player, handler, slotId, stack));
-        }
+        main.getEventManager().emit(new PlayerSwapItemInHandEvent(player));
     }
+
 }

src/main/kotlin/one/oktw/galaxy/Main.kt

@@ -39,6 +39,7 @@ import one.oktw.galaxy.command.commands.Spawn
 import one.oktw.galaxy.event.EventManager
 import one.oktw.galaxy.event.type.ProxyResponseEvent
 import one.oktw.galaxy.item.event.CustomItemEventHandler
+import one.oktw.galaxy.item.event.Gun
 import one.oktw.galaxy.item.event.Wrench
 import one.oktw.galaxy.player.Harvest
 import one.oktw.galaxy.proxy.api.ProxyAPI
@@ -99,7 +100,7 @@ class Main : DedicatedServerModInitializer, CoroutineScope {
             eventManager.register(Elevator())
             eventManager.register(AngelBlock())
             eventManager.register(CustomItemEventHandler())
-//            eventManager.register(Weapon())
+            eventManager.register(Gun())
         })
 
         ServerLifecycleEvents.SERVER_STOPPING.register {

src/main/kotlin/one/oktw/galaxy/event/type/HotBarSlotUpdateEvent.kt → src/main/kotlin/one/oktw/galaxy/event/type/PlayerDropItemEvent.kt

@@ -1,6 +1,6 @@
 /*
  * OKTW Galaxy Project
- * Copyright (C) 2018-2021
+ * Copyright (C) 2018-2022
  *
  * 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
@@ -18,8 +18,6 @@
 
 package one.oktw.galaxy.event.type
 
-import net.minecraft.item.ItemStack
-import net.minecraft.screen.ScreenHandler
 import net.minecraft.server.network.ServerPlayerEntity
 
-class HotBarSlotUpdateEvent(val player: ServerPlayerEntity, val handler: ScreenHandler, val slotId: Int, val item: ItemStack) : Event
+class PlayerDropItemEvent(val player: ServerPlayerEntity) : CancelableEvent()

src/main/kotlin/one/oktw/galaxy/event/type/PlayerPickupItemEvent.kt

@@ -0,0 +1,23 @@
+/*
+ * OKTW Galaxy Project
+ * Copyright (C) 2018-2022
+ *
+ * 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
+ * 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 one.oktw.galaxy.event.type
+
+import net.minecraft.server.network.ServerPlayerEntity
+
+class PlayerPickupItemEvent(val player: ServerPlayerEntity) : Event

src/main/kotlin/one/oktw/galaxy/event/type/PlayerSwapItemInHandEvent.kt

@@ -0,0 +1,23 @@
+/*
+ * OKTW Galaxy Project
+ * Copyright (C) 2018-2022
+ *
+ * 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
+ * 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 one.oktw.galaxy.event.type
+
+import net.minecraft.server.network.ServerPlayerEntity
+
+class PlayerSwapItemInHandEvent(val player: ServerPlayerEntity) : Event