Add support for items in inventory

src/client/java/wiki/mc/rtfw/FTFWClient.java

@@ -18,6 +18,12 @@
 import java.nio.charset.StandardCharsets;
 
 public class FTFWClient implements ClientModInitializer {
+    public static KeyBinding readKey = KeyBindingHelper.registerKeyBinding(new KeyBinding("key.rtfw.open", // The translation key of the keybinding's name
+            InputUtil.Type.KEYSYM, // The type of the keybinding, KEYSYM for keyboard, MOUSE for mouse.
+            GLFW.GLFW_KEY_SEMICOLON, // The keycode of the key
+            "category.rtfw.rtfw" // The translation key of the keybinding's category.
+    ));
+
     public static @Nullable URI buildUri(String pageName, String language) {
         String solvedLanguage = null;
         if (language.startsWith("de_")) {
@@ -60,35 +66,35 @@ public class FTFWClient implements ClientModInitializer {
         var client = MinecraftClient.getInstance();
         var hit = client.crosshairTarget;
 
+        if (hit == null) return null;
+
         switch (hit.getType()) {
             case MISS:
                 break;
             case BLOCK:
                 var blockHit = (BlockHitResult) hit;
                 var blockPos = blockHit.getBlockPos();
-                var blockState = client.world.getBlockState(blockPos);
-                var block = blockState.getBlock();
-                return block.getName().getString();
+                if (client.world != null) {
+                    var blockState = client.world.getBlockState(blockPos);
+                    var block = blockState.getBlock();
+                    return block.getName().getString();
+                }
+                break;
             case ENTITY:
                 var entityHit = (EntityHitResult) hit;
                 var entity = entityHit.getEntity();
                 return entity.getName().getString();
         }
+
         return null;
     }
 
     @Override
     public void onInitializeClient() {
-        var readKey = KeyBindingHelper.registerKeyBinding(new KeyBinding(
-                "key.rtfw.open", // The translation key of the keybinding's name
-                InputUtil.Type.KEYSYM, // The type of the keybinding, KEYSYM for keyboard, MOUSE for mouse.
-                GLFW.GLFW_KEY_SEMICOLON, // The keycode of the key
-                "category.rtfw.rtfw" // The translation key of the keybinding's category.
-        ));
-
         ClientTickEvents.END_CLIENT_TICK.register(client -> {
             while (readKey.wasPressed()) {
-                var pageName = getPageNameByRaycast();
+                String pageName = getPageNameByRaycast();
+
                 if (pageName != null) {
                     var uri = buildUri(pageName, client.options.language);
                     Util.getOperatingSystem().open(uri);

src/client/java/wiki/mc/rtfw/mixin/HandledScreenMixin.java

@@ -0,0 +1,37 @@
+package wiki.mc.rtfw.mixin;
+
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.gui.screen.ingame.HandledScreen;
+import net.minecraft.screen.slot.Slot;
+import net.minecraft.util.Util;
+import org.jetbrains.annotations.Nullable;
+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.CallbackInfoReturnable;
+import wiki.mc.rtfw.FTFWClient;
+
+import java.net.URI;
+
+@Mixin(HandledScreen.class)
+public class HandledScreenMixin {
+    @Shadow
+    @Nullable
+    protected Slot focusedSlot;
+
+    @Inject(method = "keyPressed", at = @At("HEAD"))
+    public void keyPressed(int keyCode, int scanCode, int modifiers, CallbackInfoReturnable<Boolean> cir) {
+        if (FTFWClient.readKey.matchesKey(keyCode, scanCode)) {
+            Slot slot = this.focusedSlot;
+            if (slot != null && slot.hasStack()) {
+                String pageName = slot.getStack().getItem().getName().getString();
+                String language = MinecraftClient.getInstance().getLanguageManager().getLanguage();
+                URI uri = FTFWClient.buildUri(pageName, language);
+                if (uri != null) {
+                    Util.getOperatingSystem().open(uri);
+                }
+            }
+        }
+    }
+}

src/client/resources/fabric.mod.json

@@ -19,7 +19,12 @@
       "wiki.mc.rtfw.FTFWClient"
     ]
   },
-  "mixins": [],
+  "mixins": [
+    {
+      "config": "rtfw.client.mixins.json",
+      "environment": "client"
+    }
+  ],
   "depends": {
     "fabricloader": ">=0.15.7",
     "minecraft": "~1.20.4",

src/client/resources/rtfw.client.mixins.json

@@ -0,0 +1,11 @@
+{
+  "required": true,
+  "package": "wiki.mc.rtfw.mixin",
+  "compatibilityLevel": "JAVA_17",
+  "client": [
+    "HandledScreenMixin"
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  }
+}