Allow accessing block nbt from placeholders (#4161)

Author: TarLaboratories

src/generated/resources/assets/gtceu/lang/en_ud.json

@@ -3542,6 +3542,10 @@
   "gtceu.placeholder_info.block.0": "˙)█( ןoqɯʎs ʞɔoןq ǝɥʇ suɹnʇǝᴚ",
   "gtceu.placeholder_info.block.1": ":ǝbɐs∩",
   "gtceu.placeholder_info.block.2": ",█, >- }ʞɔoןq{  ",
+  "gtceu.placeholder_info.blockNbt.0": "ʎʇıʇuǝ ʞɔoןq ǝɥʇ ɟo ⟘ᗺN ǝɥʇ suɹnʇǝᴚ",
+  "gtceu.placeholder_info.blockNbt.1": ":ǝbɐs∩",
+  "gtceu.placeholder_info.blockNbt.2": "ʇqu ʎʇıʇuǝ ʞɔoןq ןןnɟ >- }ʇqNʞɔoןq{  ",
+  "gtceu.placeholder_info.blockNbt.3": "ʇqu ǝɥʇ ɟo ʇɹɐd >- }˙˙˙ ]ᄅʎǝʞ[ ]Ɩʎǝʞ[ ʇqNʞɔoןq{  ",
   "gtceu.placeholder_info.bufferText.0": "ʇɟɐɹƆɹǝʇndɯoƆ ʎq ǝןqıssǝɔɔɐ ɹǝɟɟnq ɐ ɯoɹɟ ʇxǝʇ ǝɥʇ suɹnʇǝᴚ",
   "gtceu.placeholder_info.bufferText.1": ":ǝbɐs∩",
   "gtceu.placeholder_info.bufferText.2": ")00Ɩ-Ɩ sı ǝuıן( ǝuıן pǝıɟıɔǝds ǝɥʇ uo ɹǝɟɟnq ǝɥʇ ɯoɹɟ ʇxǝʇ >- }>ǝuıן< ʇxǝ⟘ɹǝɟɟnq{  ",

src/generated/resources/assets/gtceu/lang/en_us.json

@@ -3542,6 +3542,10 @@
   "gtceu.placeholder_info.block.0": "Returns the block symbol (█).",
   "gtceu.placeholder_info.block.1": "Usage:",
   "gtceu.placeholder_info.block.2": "  {block} -> '█'",
+  "gtceu.placeholder_info.blockNbt.0": "Returns the NBT of the block entity",
+  "gtceu.placeholder_info.blockNbt.1": "Usage:",
+  "gtceu.placeholder_info.blockNbt.2": "  {blockNbt} -> full block entity nbt",
+  "gtceu.placeholder_info.blockNbt.3": "  {blockNbt [key1] [key2] ...} -> part of the nbt",
   "gtceu.placeholder_info.bufferText.0": "Returns the text from a buffer accessible by ComputerCraft",
   "gtceu.placeholder_info.bufferText.1": "Usage:",
   "gtceu.placeholder_info.bufferText.2": "  {bufferText <line>} -> text from the buffer on the specified line (line is 1-100)",

src/main/java/com/gregtechceu/gtceu/common/data/GTPlaceholders.java

@@ -35,6 +35,7 @@
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.phys.Vec2;
 import net.minecraft.world.phys.Vec3;
 import net.minecraftforge.fluids.FluidStack;
@@ -831,5 +832,27 @@ public MultiLineComponent apply(PlaceholderContext ctx,
                 return PlaceholderHandler.processPlaceholders(args.get(0).toString(), ctx);
             }
         });
+        PlaceholderHandler.addPlaceholder(new Placeholder("blockNbt") {
+
+            @Override
+            public MultiLineComponent apply(PlaceholderContext ctx, List<MultiLineComponent> args) {
+                BlockEntity blockEntity = ctx.level().getBlockEntity(ctx.pos());
+                if (blockEntity == null) return MultiLineComponent.empty();
+                Tag tag = blockEntity.saveWithFullMetadata();
+                if (tag instanceof CompoundTag compoundTag && compoundTag.contains("cover")) {
+                    CompoundTag coverTag = compoundTag.getCompound("cover");
+                    if (coverTag.contains(ctx.side().getName())) {
+                        CompoundTag cover = coverTag.getCompound(ctx.side().getName()).getCompound("payload")
+                                .getCompound("d");
+                        cover.putString("text", "[REMOVED]");
+                    }
+                }
+                for (MultiLineComponent arg : args) {
+                    if (!(tag instanceof CompoundTag compoundTag)) return MultiLineComponent.empty();
+                    tag = compoundTag.get(arg.toString());
+                }
+                return tag == null ? MultiLineComponent.empty() : MultiLineComponent.literal(tag.toString());
+            }
+        });
     }
 }

src/main/java/com/gregtechceu/gtceu/data/lang/LangHandler.java

@@ -1643,6 +1643,11 @@ public static void init(RegistrateLangProvider provider) {
                 "Returns the text from a buffer accessible by ComputerCraft",
                 "Usage:",
                 "  {bufferText <line>} -> text from the buffer on the specified line (line is 1-100)");
+        multiLang(provider, "gtceu.placeholder_info.blockNbt",
+                "Returns the NBT of the block entity",
+                "Usage:",
+                "  {blockNbt} -> full block entity nbt",
+                "  {blockNbt [key1] [key2] ...} -> part of the nbt");
         provider.add("gtceu.ender_item_link_cover.title", "Ender Item Link");
         provider.add("gtceu.ender_item_link_cover.tooltip",
                 "§7Transports §fItems§7 with a §fWireless §dEnder§f Connection§7 as §fCover§7.");
@@ -1679,7 +1684,7 @@ public static void init(RegistrateLangProvider provider) {
                 "Slot number: %d");
         multiLang(provider, "gtceu.gui.computer_monitor_cover.second_page_textbox_tooltip",
                 "Input placeholder to be used in place of %s '{}' here.",
-                "For example, you can have a string 'Energy: {}/{} EU' and 'energy' and 'energyCapacity' in these text boxes.");
+                "For example, you can have a string 'Energy: {}/{} EU' and 'energy' and 'energyCapacity' in these text boxes.");;
         provider.add("gtceu.computer_monitor_cover.error.no_placeholder", "No such placeholder: '%s'!");
         provider.add("gtceu.computer_monitor_cover.error.unclosed_bracket", "Unclosed bracket!");
         provider.add("gtceu.computer_monitor_cover.error.unexpected_bracket", "Unexpected closing bracket!");