Add 26.3 support

build.gradle.kts

@@ -87,7 +87,9 @@ dependencies {
 		implementation("net.fabricmc.fabric-api:fabric-api:${project.property("fabric_version")}")
 		implementation("com.sk89q.worldedit:worldedit-fabric-mc${project.property("worldedit_version")}")
 		implementation("fi.dy.masa.malilib:malilib-fabric-${project.property("malilib_version")}")
-		implementation("net.kr1v:malilib-api:${project.property("malilib_api_version")}")
+		implementation("net.kr1v:malilib-api:${project.property("malilib_api_version")}") {
+			exclude(group = "fi.dy.masa.malilib") // avoid pulling in malilib-api's pinned (possibly stale) transitive malilib-fabric version
+		}
 	}
 	annotationProcessor("net.kr1v:malilib-api-processor:1.0.0")
 }

settings.gradle.kts

@@ -29,7 +29,7 @@ stonecutter {
     centralScript = "build.gradle.kts"
 
     create(rootProject) {
-        versions("1.21.4", "1.21.5", "1.21.8", "1.21.10", "1.21.11", "26.1.2")
+        versions("1.21.4", "1.21.5", "1.21.8", "1.21.10", "1.21.11", "26.1.2", "26.3")
 		vcsVersion = "1.21.11"
     }
 }

src/client/java/tools/redstone/redstonetools/config/option/ConfigMacro.java

@@ -116,7 +116,11 @@ public void resetToDefault() {
 			@Override
 			protected boolean onMouseClickedImpl(/*? if >=1.21.10 {*/net.minecraft.client.input.MouseButtonEvent click, boolean doubleClick/*? } else {*//*int mouseX, int mouseY, int mouseButton*//*? }*/) {
 				super.onMouseClickedImpl(/*? if >=1.21.10 {*/click, doubleClick/*? } else {*//*mouseX, mouseY, mouseButton*//*? }*/);
-				GuiBase.openGui(new GuiMacroEditor(Component.nullToEmpty(configMacro.macroName), configMacro, Minecraft.getInstance().screen));
+				// The current screen moved off Minecraft directly and onto its Gui/HUD holder in 26.3.
+				//? if >=26.3 {
+				GuiBase.openGui(new GuiMacroEditor(Component.nullToEmpty(configMacro.macroName), configMacro, Minecraft.getInstance().gui.screen()));
+				//? } else
+				//GuiBase.openGui(new GuiMacroEditor(Component.nullToEmpty(configMacro.macroName), configMacro, Minecraft.getInstance().screen));
 				return true;
 			}
 		});

src/client/java/tools/redstone/redstonetools/features/toggleable/AirPlaceFeature.java

@@ -1,5 +1,6 @@
 package tools.redstone.redstonetools.features.toggleable;
 
+import com.mojang.blaze3d.vertex.PoseStack;
 import com.mojang.blaze3d.vertex.VertexConsumer;
 import com.mojang.brigadier.CommandDispatcher;
 import net.fabricmc.fabric.api.client.command.v2.FabricClientCommandSource;
@@ -133,8 +134,24 @@ public static BlockHitResult findAirPlaceBlockHit(Player playerEntity) {
 			if (blockState == null)
 				return;
 
-			/* render block outline */
-			Camera camera = client.gameRenderer.getMainCamera();
+			/*
+			 * Render the block outline.
+			 *
+			 * Three rendering eras are threaded through this block:
+			 *   - <1.21.10: WorldRenderContext + a VertexConsumer, entity/camera position passed
+			 *     as raw doubles into the renderHitOutline mixin invoker.
+			 *   - 1.21.10-26.2: same VertexConsumer + mixin invoker approach, but the outline is
+			 *     described by a BlockOutlineRenderState instead of raw block/state args.
+			 *   - >=26.3: Mojang replaced the VertexConsumer/mixin approach with a submit-node
+			 *     pipeline. The context now hands out a PoseStack directly plus a
+			 *     SubmitNodeCollector that draws shapes itself, so there is no VertexConsumer, no
+			 *     mixin invoker (WorldRendererInvoker.invokeRenderHitOutline no longer exists), and
+			 *     no BlockOutlineRenderState needed - see the final `//? } else {` branch below.
+			 */
+			//? if >=26.3 {
+			Camera camera = client.gameRenderer.mainCamera();
+			//? } else
+			//Camera camera = client.gameRenderer.getMainCamera();
 			Vec3 camPos = camera
 				//? if <=1.21.5 {
 				/*.getPosition();
@@ -146,14 +163,15 @@ public static BlockHitResult findAirPlaceBlockHit(Player playerEntity) {
 
 			//? if <26.1 {
 			VertexConsumer consumer = context.consumers().getBuffer(
-			//? } else
-			//VertexConsumer consumer = context.bufferSource().getBuffer(
 				//? if <=1.21.10 {
 				/*RenderType.lines()
 				*///?} else {
 				RenderTypes.lines()
 				//?}
 			);
+			//? } else if <26.3 {
+			/*VertexConsumer consumer = context.bufferSource().getBuffer(RenderTypes.lines());
+			*///?}
 
 			//? if <1.21.10 {
 			/*((WorldRendererInvoker) context.worldRenderer()).invokeRenderHitOutline(
@@ -165,7 +183,7 @@ public static BlockHitResult findAirPlaceBlockHit(Player playerEntity) {
 				blockState,
 				CommonColors.BLACK
 			);
-			*///?} else {
+			*///?} else if <26.3 {
 			//? if <26.1 {
 			((WorldRendererInvoker) context.worldRenderer()).invokeRenderHitOutline(
 			//? } else
@@ -193,7 +211,20 @@ public static BlockHitResult findAirPlaceBlockHit(Player playerEntity) {
 				*///? }
 				CommonColors.BLACK/*? if >=1.21.11 {*/, client.getWindow().getAppropriateLineWidth()/*?}*/
 			);
-			//?}
+			//?} else {
+			/*PoseStack matrices = context.poseStack();
+			matrices.pushPose();
+			matrices.translate(blockPos.getX() - camPos.x, blockPos.getY() - camPos.y, blockPos.getZ() - camPos.z);
+			context.submitNodeCollector().submitShapeOutline(
+				matrices,
+				blockState.getShape(client.level, blockPos, net.minecraft.world.phys.shapes.CollisionContext.of(camera.entity())),
+				RenderTypes.lines(),
+				CommonColors.BLACK,
+				client.getWindow().getAppropriateLineWidth(),
+				false
+			);
+			matrices.popPose();
+			*///?}
 		};
 
 		//? if <1.21.10 {

src/client/java/tools/redstone/redstonetools/mixin/blocks/RedstoneHitboxMixin.java

@@ -3,7 +3,11 @@
 import net.minecraft.core.BlockPos;
 import net.minecraft.world.level.BlockGetter;
 import net.minecraft.world.level.block.Block;
-import net.minecraft.world.level.block.RedStoneWireBlock;
+// Mojang mappings renamed RedStoneWireBlock -> RedstoneWireBlock in 26.3 (casing fix only).
+//? if >=26.3 {
+import net.minecraft.world.level.block.RedstoneWireBlock;
+//? } else
+//import net.minecraft.world.level.block.RedStoneWireBlock;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.phys.shapes.CollisionContext;
 import net.minecraft.world.phys.shapes.VoxelShape;
@@ -15,7 +19,10 @@
 import tools.redstone.redstonetools.config.General;
 import tools.redstone.redstonetools.features.toggleable.BigDustFeature;
 
-@Mixin(RedStoneWireBlock.class)
+//? if >=26.3 {
+@Mixin(RedstoneWireBlock.class)
+//? } else
+//@Mixin(RedStoneWireBlock.class)
 public class RedstoneHitboxMixin {
 	// use array for better performance
 	@Unique

src/client/java/tools/redstone/redstonetools/mixin/features/WorldRendererInvoker.java

@@ -13,8 +13,12 @@
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.gen.Invoker;
 
+// LevelRenderer.renderHitOutline was removed in 26.3, replaced by the submit-node pipeline's
+// SubmitNodeCollector.submitShapeOutline(...), which is a public API and needs no invoker mixin.
+// This interface is intentionally empty on >=26.3; see AirPlaceFeature for the call site.
 @Mixin(LevelRenderer.class)
 public interface WorldRendererInvoker {
+	//? if <26.3 {
 	@Invoker
 	//? if <=1.21.8 {
 	/*void invokeRenderHitOutline(PoseStack matrices, VertexConsumer vertexConsumer, Entity entity, double cameraX, double cameraY, double cameraZ, BlockPos pos, BlockState state, int color);
@@ -23,4 +27,5 @@ public interface WorldRendererInvoker {
 	*///?} else {
 	void invokeRenderHitOutline(PoseStack matrices, VertexConsumer vertexConsumer, double x, double y, double z, BlockOutlineRenderState state, int color, float lineWidth);
 	//?}
-}
+	//? }
+}

src/main/java/tools/redstone/redstonetools/utils/SignalBlockSupplier.java

@@ -91,7 +91,12 @@ private static int calculateComparatorOutput(int items, int slots, int item$getM
 
 	private static Item getBestItem(int signalStrength, int slots) {
 		if (signalStrength > 15)
-			return Items.WHITE_SHULKER_BOX;
+			// 26.3 consolidated the per-color shulker box items into a single DYED_SHULKER_BOX
+			// color collection; WHITE_SHULKER_BOX etc. no longer exist as separate items.
+			//? if >=26.3 {
+			return Items.DYED_SHULKER_BOX.white();
+			//? } else
+			//return Items.WHITE_SHULKER_BOX;
 		else if (slots >= 15)
 			return Items.WOODEN_SHOVEL;
 		else

src/main/resources/fabric.mod.json

@@ -37,7 +37,7 @@
   "depends": {
     "fabricloader": ">=0.18.1",
     "fabric-api": "*",
-    "minecraft": ">=1.21.4 <=26.1.2"
+    "minecraft": ">=1.21.4 <=26.3"
   },
   "recommends": {
     "worldedit": "*",

versions/26.3/gradle.properties

@@ -0,0 +1,7 @@
+minecraft_version=26.3
+minecraft_version_out=26.3
+
+fabric_version=0.161.0+26.3
+malilib_version=26.3:0.30.1
+malilib_api_version=0.8.3-26.2
+worldedit_version=26.3:7.4.6-SNAPSHOT