Cart Assemblers now stop disassembeled minecarts and send assembled minecarts on their way automatically. Power to assemble cart.

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/mounted/CartAssemblerBlock.java

@@ -76,10 +76,20 @@ public class CartAssemblerBlock extends AbstractRailBlock implements ITE<CartAss
 	public void onMinecartPass(BlockState state, World world, BlockPos pos, AbstractMinecartEntity cart) {
 		if (!cart.canBeRidden() && !(cart instanceof FurnaceMinecartEntity))
 			return;
-		if (state.get(POWERED))
+		
-			disassemble(world, pos, cart);
+		withTileEntityDo(world, pos, te -> {
-		else
+			if(te.isMinecartUpdateValid()) {
-			assemble(world, pos, cart);
+				if (state.get(POWERED)) {
+					assemble(world, pos, cart);
+					cart.setVelocity(cart.getAdjustedHorizontalFacing().getXOffset(), cart.getAdjustedHorizontalFacing().getYOffset(), cart.getAdjustedHorizontalFacing().getZOffset());
+				}
+				else {
+					disassemble(world, pos, cart);
+					cart.setVelocity(0, 0, 0);
+				}
+				te.resetTicksSinceMinecartUpdate();
+			}
+		});
 	}
 
 	protected void assemble(World world, BlockPos pos, AbstractMinecartEntity cart) {

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/mounted/CartAssemblerTileEntity.java

@@ -15,11 +15,22 @@ import net.minecraft.tileentity.TileEntityType;
 import net.minecraft.util.Direction;
 
 public class CartAssemblerTileEntity extends SmartTileEntity {
+	private static final int assemblyCooldown = 8;
 
 	protected ScrollOptionBehaviour<CartMovementMode> movementMode;
+	private int ticksSinceMinecartUpdate;
 
 	public CartAssemblerTileEntity(TileEntityType<? extends CartAssemblerTileEntity> type) {
 		super(type);
+		ticksSinceMinecartUpdate = assemblyCooldown;
+	}
+	
+	@Override
+	public void tick() {
+		super.tick();
+		if(ticksSinceMinecartUpdate < assemblyCooldown) {
+			ticksSinceMinecartUpdate++;
+		}
 	}
 
 	@Override
@@ -59,7 +70,14 @@ public class CartAssemblerTileEntity extends SmartTileEntity {
 		public String getTranslationKey() {
 			return translationKey;
 		}
-
+	}
+	
+	public void resetTicksSinceMinecartUpdate() {
+		ticksSinceMinecartUpdate = 0;
+	}
+	
+	public boolean isMinecartUpdateValid() {
+		return ticksSinceMinecartUpdate >= assemblyCooldown;
 	}
 
 }

src/main/resources/assets/create/models/block/cart_assembler/block.json

@@ -5,7 +5,7 @@
 		"4": "create:block/bearing_top",
 		"5": "create:block/mechanical_bearing_side",
 		"clutch_off": "create:block/clutch_off",
-		"rail": "block/rail",
+		"rail": "block/powered_rail",
 		"translation_chassis_side": "create:block/cart_assembler_side",
 		"particle": "create:block/cart_assembler_side"
 	},

src/main/resources/assets/create/models/block/cart_assembler/block_powered.json

@@ -1,6 +1,7 @@
 {
 	"parent": "create:block/cart_assembler/block",
     "textures": {
-        "clutch_off": "create:block/clutch_on"
+        "clutch_off": "create:block/clutch_on",
+        "rail": "block/powered_rail_on"
     }
 }