Moved on from tick-based system

src/client/java/me/advait/PriorityKeysClient.java

@@ -7,12 +7,12 @@ import net.minecraft.text.Text;
 import net.minecraft.client.util.InputUtil;
 import net.fabricmc.fabric.api.client.keybinding.v1.KeyBindingHelper;
 import org.lwjgl.glfw.GLFW;
+import net.fabricmc.fabric.api.client.keybinding.v1.KeyBindingHelper;
 
 import java.util.*;
 
 public class PriorityKeysClient implements ClientModInitializer {
 
-	private static final Set<Integer> keysPressedThisTick = new HashSet<>();
 	private static KeyBinding cyclePresetKey;
 
 	@Override
@@ -42,24 +42,7 @@ public class PriorityKeysClient implements ClientModInitializer {
 				PriorityConfig.save();
 				client.player.sendMessage(Text.of("§aSwitched to priority preset: §f" + next), true);
 			}
-
-			KeyBinding[] currentHotbarKeys = client.options.hotbarKeys;
-			keysPressedThisTick.clear();
-
-			for (int i = 0; i < currentHotbarKeys.length; i++) {
-				if (currentHotbarKeys[i].isPressed()) {
-					keysPressedThisTick.add(i);
-				}
-			}
-
-			if (keysPressedThisTick.size() > 1) {
-				for (int slot : PriorityConfig.priorityOrder) {
-					if (keysPressedThisTick.contains(slot)) {
-						client.player.getInventory().setSelectedSlot(slot);
-						break;
-					}
-				}
-			}
 		});
 	}
+
 }

src/client/java/me/advait/mixin/client/MinecraftClientMixin.java

@@ -0,0 +1,45 @@
+package me.advait.mixin.client;
+
+import me.advait.PriorityConfig;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.option.KeyBinding;
+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;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Mixin(MinecraftClient.class)
+public class MinecraftClientMixin {
+
+    @Inject(method = "handleInputEvents", at = @At("HEAD"))
+    private void onHandleInputEvents(CallbackInfo ci) {
+        MinecraftClient client = MinecraftClient.getInstance();
+        if (client.player == null || client.options == null) return;
+
+        if (client.player.isSpectator()) return;
+
+        KeyBinding[] hotbarKeys = client.options.hotbarKeys;
+
+        List<Integer> pressedSlots = new ArrayList<>();
+        for (int i = 0; i < hotbarKeys.length; i++) {
+            if (hotbarKeys[i].wasPressed()) {
+                pressedSlots.add(i);
+            }
+        }
+
+        if (pressedSlots.size() > 1) {
+            for (int slot : PriorityConfig.priorityOrder) {
+                if (pressedSlots.contains(slot)) {
+                    client.player.getInventory().setSelectedSlot(slot);
+                    break;
+                }
+            }
+        } else if (pressedSlots.size() == 1) {
+            client.player.getInventory().setSelectedSlot(pressedSlots.get(0));
+        }
+    }
+}
+

src/client/resources/prioritykeys.client.mixins.json

@@ -1,12 +1,13 @@
 {
-	"required": true,
-	"package": "me.advait.mixin.client",
-	"compatibilityLevel": "JAVA_21",
-	"client": [
-		"ControlsOptionsScreenMixin",
-		"GameOptionsScreenAccessor"
-	],
-	"injectors": {
-		"defaultRequire": 1
+  "required": true,
+  "package": "me.advait.mixin.client",
+  "compatibilityLevel": "JAVA_21",
+  "client": [
+    "ControlsOptionsScreenMixin",
+    "GameOptionsScreenAccessor",
+    "MinecraftClientMixin"
+  ],
+  "injectors": {
+    "defaultRequire": 1
 	}
 }