diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..12f8644
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,25 @@
+# eclipse
+bin
+*.launch
+.settings
+.metadata
+.classpath
+.project
+
+# idea
+out
+*.ipr
+*.iws
+*.iml
+.idea
+
+# gradle
+build
+.gradle
+
+# other
+eclipse
+run
+
+# Files from Forge MDK
+forge*changelog.txt
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..22a4f99
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,119 @@
+buildscript {
+    repositories {
+        maven { url = 'https://files.minecraftforge.net/maven' }
+        jcenter()
+        mavenCentral()
+    }
+    dependencies {
+        classpath group: 'net.minecraftforge.gradle', name: 'ForgeGradle', version: '3.+', changing: true
+    }
+}
+apply plugin: 'net.minecraftforge.gradle'
+apply plugin: 'eclipse'
+apply plugin: 'maven-publish'
+
+version = '1.0'
+group = 'com.amadornes.mcmultipart'
+archivesBaseName = 'MCMultiPart'
+
+sourceCompatibility = targetCompatibility = compileJava.sourceCompatibility = compileJava.targetCompatibility = '1.8'
+
+sourceSets {
+    examples {
+        java {
+            compileClasspath += main.output
+            runtimeClasspath += main.output
+        }
+    }
+}
+
+configurations {
+    examplesCompile.extendsFrom compile
+    examplesRuntime.extendsFrom runtime
+}
+
+minecraft {
+    mappings channel: 'snapshot', version: '20190719-1.14.3'
+
+    runs {
+        client {
+            workingDirectory project.file('run')
+
+            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'
+
+            property 'forge.logging.console.level', 'debug'
+
+            mods {
+                examplemod {
+                    source sourceSets.main
+                }
+            }
+        }
+
+        server {
+            workingDirectory project.file('run')
+
+            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'
+
+            property 'forge.logging.console.level', 'debug'
+
+            mods {
+                examplemod {
+                    source sourceSets.main
+                }
+            }
+        }
+
+        data {
+            workingDirectory project.file('run')
+
+            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'
+
+            property 'forge.logging.console.level', 'debug'
+
+            args '--mod', 'examplemod', '--all', '--output', file('src/generated/resources/')
+
+            mods {
+                examplemod {
+                    source sourceSets.main
+                }
+            }
+        }
+    }
+}
+
+dependencies {
+    minecraft 'net.minecraftforge:forge:1.14.4-28.1.102'
+}
+
+jar {
+    manifest {
+        attributes([
+            "Specification-Title": "MCMultiPart",
+            "Specification-Vendor": "amadornes",
+            "Specification-Version": "3",
+            "Implementation-Title": project.name,
+            "Implementation-Version": "${version}",
+            "Implementation-Vendor" :"amadornes",
+            "Implementation-Timestamp": new Date().format("yyyy-MM-dd'T'HH:mm:ssZ")
+        ])
+    }
+}
+
+def reobfFile = file("$buildDir/reobfJar/output.jar")
+def reobfArtifact = artifacts.add('default', reobfFile) {
+    type 'jar'
+    builtBy 'reobfJar'
+}
+publishing {
+    publications {
+        mavenJava(MavenPublication) {
+            artifact reobfArtifact
+        }
+    }
+    repositories {
+        maven {
+            url "file:///${project.projectDir}/mcmodsrepo"
+        }
+    }
+}
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..878bf1f
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,4 @@
+# Sets default memory used for gradle commands. Can be overridden by user or command line properties.
+# This is required to provide enough memory for the Minecraft decompilation process.
+org.gradle.jvmargs=-Xmx3G
+org.gradle.daemon=false
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..7a3265e
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..949819d
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-bin.zip
diff --git a/gradlew b/gradlew
new file mode 100644
index 0000000..cccdd3d
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..f955316
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/src/examples/java/com/amadornes/mcmultipart/examples/ExampleCounterButton.java b/src/examples/java/com/amadornes/mcmultipart/examples/ExampleCounterButton.java
new file mode 100644
index 0000000..7b8f7a5
--- /dev/null
+++ b/src/examples/java/com/amadornes/mcmultipart/examples/ExampleCounterButton.java
@@ -0,0 +1,62 @@
+package com.amadornes.mcmultipart.examples;
+
+import com.amadornes.mcmultipart.api.BlockSlot;
+import com.amadornes.mcmultipart.api.IMultipart;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.material.Material;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.state.IProperty;
+import net.minecraft.state.IntegerProperty;
+import net.minecraft.state.StateContainer;
+import net.minecraft.util.Hand;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.BlockRayTraceResult;
+import net.minecraft.util.math.shapes.ISelectionContext;
+import net.minecraft.util.math.shapes.VoxelShape;
+import net.minecraft.world.IBlockReader;
+import net.minecraft.world.World;
+
+import javax.annotation.Nonnull;
+
+import static com.amadornes.mcmultipart.api.MultipartHelper.replaceBlockState;
+
+public class ExampleCounterButton extends Block implements IMultipart {
+
+    private static final IProperty<Integer> COUNT = IntegerProperty.create("count", 0, 15);
+
+    private static final BlockSlot SLOT = BlockSlot.get("mcmpexamples", "counter_button_slot");
+
+    private static final VoxelShape SHAPE = makeCuboidShape(4, 4, 4, 12, 12, 12);
+
+    public ExampleCounterButton() {
+        super(Block.Properties.create(Material.ROCK));
+    }
+
+    @Override
+    protected void fillStateContainer(StateContainer.Builder<Block, BlockState> builder) {
+        builder.add(COUNT);
+    }
+
+    @Override
+    @Nonnull
+    public BlockSlot getSlot(@Nonnull BlockState state) {
+        return SLOT;
+    }
+
+    @Override
+    @Nonnull
+    public VoxelShape getShape(BlockState state, IBlockReader worldIn, BlockPos pos, ISelectionContext context) {
+        return SHAPE;
+    }
+
+    @Override
+    public boolean onBlockActivated(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockRayTraceResult hit) {
+        // On the server, count up once per click
+        if (!world.isRemote) {
+            replaceBlockState(world, pos, state, state.cycle(COUNT));
+        }
+        return true;
+    }
+
+}
diff --git a/src/examples/java/com/amadornes/mcmultipart/examples/ExampleCoverBlock.java b/src/examples/java/com/amadornes/mcmultipart/examples/ExampleCoverBlock.java
new file mode 100644
index 0000000..bc09655
--- /dev/null
+++ b/src/examples/java/com/amadornes/mcmultipart/examples/ExampleCoverBlock.java
@@ -0,0 +1,64 @@
+package com.amadornes.mcmultipart.examples;
+
+import com.amadornes.mcmultipart.api.BlockSlot;
+import com.amadornes.mcmultipart.api.IMultipart;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.material.Material;
+import net.minecraft.state.IProperty;
+import net.minecraft.state.StateContainer;
+import net.minecraft.state.properties.BlockStateProperties;
+import net.minecraft.state.properties.Half;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.shapes.ISelectionContext;
+import net.minecraft.util.math.shapes.VoxelShape;
+import net.minecraft.world.IBlockReader;
+
+import javax.annotation.Nonnull;
+import java.util.EnumMap;
+import java.util.Map;
+
+public class ExampleCoverBlock extends Block implements IMultipart {
+
+    private static final IProperty<Direction> FACE = BlockStateProperties.FACING;
+
+    private static final Map<Direction, BlockSlot> SLOTS = new EnumMap<>(Direction.class);
+
+    private static final Map<Direction, VoxelShape> SHAPES = new EnumMap<>(Direction.class);
+
+    static {
+        for (Direction direction : Direction.values()) {
+            SLOTS.put(direction, BlockSlot.get("mcmpexamples", "cover_" + direction.getName()));
+        }
+
+        SHAPES.put(Direction.DOWN, makeCuboidShape(0, 0, 0, 16, 2, 16));
+        SHAPES.put(Direction.UP, makeCuboidShape(0, 14, 0, 16, 16, 16));
+        SHAPES.put(Direction.NORTH, makeCuboidShape(0, 0, 0, 16, 16, 2));
+        SHAPES.put(Direction.SOUTH, makeCuboidShape(0, 0, 14, 16, 16, 16));
+        SHAPES.put(Direction.WEST, makeCuboidShape(0, 0, 0, 2, 16, 16));
+        SHAPES.put(Direction.EAST, makeCuboidShape(14, 0, 0, 16, 16, 16));
+    }
+
+    public ExampleCoverBlock() {
+        super(Properties.create(Material.ROCK));
+    }
+
+    @Override
+    protected void fillStateContainer(StateContainer.Builder<Block, BlockState> builder) {
+        builder.add(FACE);
+    }
+
+    @Override
+    @Nonnull
+    public BlockSlot getSlot(@Nonnull BlockState state) {
+        return SLOTS.get(state.get(FACE));
+    }
+
+    @Override
+    @Nonnull
+    public VoxelShape getShape(BlockState state, IBlockReader world, BlockPos pos, ISelectionContext context) {
+        return SHAPES.get(state.get(FACE));
+    }
+
+}
diff --git a/src/examples/java/com/amadornes/mcmultipart/examples/ExamplePipe.java b/src/examples/java/com/amadornes/mcmultipart/examples/ExamplePipe.java
new file mode 100644
index 0000000..a448bf4
--- /dev/null
+++ b/src/examples/java/com/amadornes/mcmultipart/examples/ExamplePipe.java
@@ -0,0 +1,104 @@
+package com.amadornes.mcmultipart.examples;
+
+import com.amadornes.mcmultipart.api.BlockSlot;
+import com.amadornes.mcmultipart.api.IMultipart;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.material.Material;
+import net.minecraft.state.BooleanProperty;
+import net.minecraft.state.IProperty;
+import net.minecraft.state.StateContainer;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.shapes.IBooleanFunction;
+import net.minecraft.util.math.shapes.ISelectionContext;
+import net.minecraft.util.math.shapes.VoxelShape;
+import net.minecraft.util.math.shapes.VoxelShapes;
+import net.minecraft.world.IBlockReader;
+import net.minecraft.world.IWorld;
+
+import javax.annotation.Nonnull;
+import java.util.EnumMap;
+import java.util.IdentityHashMap;
+import java.util.Map;
+
+import static com.amadornes.mcmultipart.api.MultipartHelper.getBlockState;
+import static com.amadornes.mcmultipart.api.MultipartHelper.testShapeOcclusion;
+
+public class ExamplePipe extends Block implements IMultipart {
+
+    private static final Map<Direction, IProperty<Boolean>> CONNECTION_PROPERTIES = new EnumMap<>(Direction.class);
+
+    private static final BlockSlot SLOT = BlockSlot.get("mcmpexamples", "pipe_slot");
+
+    private static final VoxelShape CENTER_SHAPE = makeCuboidShape(4, 4, 4, 12, 12, 12);
+    private static final Map<Direction, VoxelShape> SIDE_SHAPES = new EnumMap<>(Direction.class);
+    private static final Map<BlockState, VoxelShape> SHAPES = new IdentityHashMap<>();
+
+    static {
+        for (Direction direction : Direction.values()) {
+            CONNECTION_PROPERTIES.put(direction, BooleanProperty.create(direction.getName()));
+        }
+
+        SIDE_SHAPES.put(Direction.DOWN, makeCuboidShape(4, 0, 4, 12, 4, 12));
+        SIDE_SHAPES.put(Direction.UP, makeCuboidShape(4, 12, 4, 12, 16, 12));
+        SIDE_SHAPES.put(Direction.NORTH, makeCuboidShape(4, 4, 0, 12, 12, 4));
+        SIDE_SHAPES.put(Direction.SOUTH, makeCuboidShape(4, 4, 12, 12, 12, 16));
+        SIDE_SHAPES.put(Direction.WEST, makeCuboidShape(0, 4, 4, 4, 12, 12));
+        SIDE_SHAPES.put(Direction.EAST, makeCuboidShape(12, 4, 4, 16, 12, 12));
+    }
+
+    public ExamplePipe() {
+        super(Properties.create(Material.ROCK));
+    }
+
+    @Override
+    protected void fillStateContainer(StateContainer.Builder<Block, BlockState> builder) {
+        CONNECTION_PROPERTIES.values().forEach(builder::add);
+    }
+
+    @Override
+    @Nonnull
+    public BlockSlot getSlot(@Nonnull BlockState state) {
+        return SLOT;
+    }
+
+    @Override
+    @Nonnull
+    public VoxelShape getShape(BlockState state, IBlockReader world, BlockPos pos, ISelectionContext context) {
+        return SHAPES.computeIfAbsent(state, ExamplePipe::computeShape);
+    }
+
+    @Nonnull
+    @Override
+    public VoxelShape getOcclusionShape(@Nonnull BlockState state, @Nonnull IBlockReader world, @Nonnull BlockPos pos) {
+        return CENTER_SHAPE; // The pipe only "occupies" the center of the block
+    }
+
+    @Nonnull
+    @Override
+    public BlockState updatePostPlacement(@Nonnull BlockState state, Direction side, BlockState neighborState, IWorld world, BlockPos pos, BlockPos neighborPos) {
+        IProperty<Boolean> property = CONNECTION_PROPERTIES.get(side);
+        // Check if there's a pipe in the neighboring block
+        if (getBlockState(world, neighborPos, SLOT).getBlock() == this) {
+            VoxelShape shape = SIDE_SHAPES.get(side);
+            VoxelShape neighborShape = SIDE_SHAPES.get(side.getOpposite());
+            // If neither this block's connection space nor the other's is taken up, connect
+            if (!testShapeOcclusion(world, pos, shape) && !testShapeOcclusion(world, neighborPos, neighborShape)) {
+                return state.with(property, true);
+            }
+        }
+        return state.with(property, false);
+    }
+
+    private static VoxelShape computeShape(BlockState state) {
+        VoxelShape shape = CENTER_SHAPE;
+        for (Direction direction : Direction.values()) {
+            if (state.get(CONNECTION_PROPERTIES.get(direction))) {
+                shape = VoxelShapes.combineAndSimplify(shape, SIDE_SHAPES.get(direction), IBooleanFunction.OR);
+            }
+        }
+        return shape;
+    }
+
+}
diff --git a/src/main/java/com/amadornes/mcmultipart/MCMultiPart.java b/src/main/java/com/amadornes/mcmultipart/MCMultiPart.java
new file mode 100644
index 0000000..9a21337
--- /dev/null
+++ b/src/main/java/com/amadornes/mcmultipart/MCMultiPart.java
@@ -0,0 +1,26 @@
+package com.amadornes.mcmultipart;
+
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.event.lifecycle.FMLClientSetupEvent;
+import net.minecraftforge.fml.event.lifecycle.FMLCommonSetupEvent;
+import net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+@Mod(MCMultiPart.MODID)
+public class MCMultiPart {
+
+    public static final String MODID = "mcmultipart";
+
+    public MCMultiPart() {
+        FMLJavaModLoadingContext.get().getModEventBus().addListener(this::setup);
+        FMLJavaModLoadingContext.get().getModEventBus().addListener(this::doClientStuff);
+    }
+
+    private void setup(FMLCommonSetupEvent event) {
+    }
+
+    private void doClientStuff(FMLClientSetupEvent event) {
+    }
+
+}
diff --git a/src/main/java/com/amadornes/mcmultipart/api/BlockSlot.java b/src/main/java/com/amadornes/mcmultipart/api/BlockSlot.java
new file mode 100644
index 0000000..3e000df
--- /dev/null
+++ b/src/main/java/com/amadornes/mcmultipart/api/BlockSlot.java
@@ -0,0 +1,47 @@
+package com.amadornes.mcmultipart.api;
+
+import com.amadornes.mcmultipart.MCMultiPart;
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
+import net.minecraft.util.ResourceLocation;
+
+import javax.annotation.Nonnull;
+
+public final class BlockSlot {
+
+    /**
+     * The default slot.
+     * <p>
+     * This indicates that multipart behavior is not supported.
+     */
+    @Nonnull
+    public static final BlockSlot FULL_BLOCK = get(MCMultiPart.MODID, "full_block");
+
+    private static final LoadingCache<ResourceLocation, BlockSlot> SLOTS = CacheBuilder.newBuilder().build(CacheLoader.from(BlockSlot::new));
+
+    /**
+     * Gets (or creates) a block slot by name.
+     */
+    public static BlockSlot get(String namespace, String path) {
+        return get(new ResourceLocation(namespace, path));
+    }
+
+    /**
+     * Gets (or creates) a block slot by name.
+     */
+    public static BlockSlot get(ResourceLocation name) {
+        return SLOTS.getUnchecked(name);
+    }
+
+    private BlockSlot(ResourceLocation name) {
+        this.name = name;
+    }
+
+    private final ResourceLocation name;
+
+    public ResourceLocation getName() {
+        return name;
+    }
+
+}
\ No newline at end of file
diff --git a/src/main/java/com/amadornes/mcmultipart/api/IMultipart.java b/src/main/java/com/amadornes/mcmultipart/api/IMultipart.java
new file mode 100644
index 0000000..e03c9e5
--- /dev/null
+++ b/src/main/java/com/amadornes/mcmultipart/api/IMultipart.java
@@ -0,0 +1,79 @@
+package com.amadornes.mcmultipart.api;
+
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.util.ActionResultType;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.shapes.ISelectionContext;
+import net.minecraft.util.math.shapes.VoxelShape;
+import net.minecraft.world.IBlockReader;
+import net.minecraft.world.World;
+
+public interface IMultipart {
+
+    /**
+     * Gets the {@link Block} represented by this multipart.
+     * <p>
+     * Defaults to casting the current object.
+     */
+    default Block getMultipartBlock() {
+        return (Block) this;
+    }
+
+    /**
+     * Gets the slot that the given state takes up when placed in the same space as other blocks.
+     * <p>
+     * Returning {@link BlockSlot#FULL_BLOCK} signifies that the given state does not support multipart behavior.
+     */
+    BlockSlot getSlot(BlockState state);
+
+    /**
+     * Gets the shape for a given state when performing an occlusion test.<br/>
+     * This is the part of the block that cannot and will not be intersected by other parts in the same block space.
+     * <p>
+     * <b>The state may not yet be in the world, so perform any necessary checks.</b>
+     * <p>
+     * Example: In the case of a pipe or tube, this should only return the center of said block, since the sides can
+     * be covered to block the connection.
+     */
+    default VoxelShape getOcclusionShape(BlockState state, IBlockReader world, BlockPos pos) {
+        return state.getShape(world, pos, ISelectionContext.dummy());
+    }
+
+    /**
+     * Performs an occlusion test between a state and another state.<br/>
+     * Either of them may not be in the world, so perform any necessary checks.
+     * <p>
+     * Returning {@link ActionResultType#SUCCESS} indicates that the blocks do not intersect with each other.<br/>
+     * Returning {@link ActionResultType#FAIL} indicates that the blocks intersect with each other.<br/>
+     * Returning {@link ActionResultType#PASS} indicates that this block does not perform special occlusion testing.
+     * <p>
+     * When testing two blocks against each other:<br/>
+     * If either block returns {@link ActionResultType#FAIL}, they intersect.<br/>
+     * If neither fail and either block returns {@link ActionResultType#SUCCESS}, they don't intersect.<br/>
+     * If both return {@link ActionResultType#PASS}, a default occlusion test is to be performed by the caller.
+     */
+    default ActionResultType testOcclusion(BlockState state, IBlockReader world, BlockPos pos, BlockState otherState) {
+        return ActionResultType.PASS;
+    }
+
+    /**
+     * Called when another state is added to the current block space.
+     */
+    default void onStateAdded(BlockState state, World world, BlockPos pos, Block block, BlockState addedState) {
+    }
+
+    /**
+     * Called when another state is removed from the current block space.
+     */
+    default void onStateRemoved(BlockState state, World world, BlockPos pos, Block block, BlockState removedState) {
+    }
+
+    /**
+     * Called when another state is replaced in the current block space.
+     */
+    default void onStateReplaced(BlockState state, World world, BlockPos pos, Block block, BlockState beforeState, BlockState afterState) {
+    }
+
+
+}
diff --git a/src/main/java/com/amadornes/mcmultipart/api/MultipartHelper.java b/src/main/java/com/amadornes/mcmultipart/api/MultipartHelper.java
new file mode 100644
index 0000000..b39b1bf
--- /dev/null
+++ b/src/main/java/com/amadornes/mcmultipart/api/MultipartHelper.java
@@ -0,0 +1,82 @@
+package com.amadornes.mcmultipart.api;
+
+import com.amadornes.mcmultipart.util.MultipartHelperInternal;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.shapes.VoxelShape;
+import net.minecraft.world.IBlockReader;
+import net.minecraft.world.IWorld;
+
+import javax.annotation.Nullable;
+import java.util.Collections;
+import java.util.Set;
+
+public final class MultipartHelper {
+
+    private MultipartHelper() {
+    }
+
+    @Nullable
+    public static IMultipart getMultipart(Block block) {
+        return MultipartHelperInternal.getMultipart(block);
+    }
+
+    public static Set<BlockState> getAllBlockStates(IBlockReader world, BlockPos pos) {
+        return MultipartHelperInternal.getAllBlockStates(world, pos);
+    }
+
+    public static BlockState getBlockState(IBlockReader world, BlockPos pos, BlockSlot slot) {
+        return MultipartHelperInternal.getBlockState(world, pos, slot);
+    }
+
+    @Nullable
+    public static TileEntity getTileEntity(IBlockReader world, BlockPos pos, BlockSlot slot) {
+        return MultipartHelperInternal.getTileEntity(world, pos, slot);
+    }
+
+    @Nullable
+    public static TileEntity getTileEntity(IBlockReader world, BlockPos pos, BlockState state) {
+        IMultipart part = getMultipart(state.getBlock());
+        if (part == null) return null;
+        return getTileEntity(world, pos, part.getSlot(state));
+    }
+
+    public static boolean canAddBlockState(IWorld world, BlockPos pos, BlockState state) {
+        return MultipartHelperInternal.canAddBlockState(world, pos, state);
+    }
+
+    public static void addBlockState(IWorld world, BlockPos pos, BlockState state) {
+        addBlockState(world, pos, state, 3);
+    }
+
+    public static void addBlockState(IWorld world, BlockPos pos, BlockState state, int flags) {
+        MultipartHelperInternal.addBlockState(world, pos, state, flags);
+    }
+
+    public static boolean canReplaceBlockState(IWorld world, BlockPos pos, BlockState originalState, BlockState newState) {
+        return MultipartHelperInternal.canReplaceBlockState(world, pos, originalState, newState);
+    }
+
+    public static void replaceBlockState(IWorld world, BlockPos pos, BlockState originalState, BlockState newState) {
+        replaceBlockState(world, pos, originalState, newState, 3);
+    }
+
+    public static void replaceBlockState(IWorld world, BlockPos pos, BlockState originalState, BlockState newState, int flags) {
+        MultipartHelperInternal.replaceBlockState(world, pos, originalState, newState, flags);
+    }
+
+    public static boolean removeBlockState(IWorld world, BlockPos pos, BlockState state, boolean isMoving) {
+        return MultipartHelperInternal.removeBlockState(world, pos, state, isMoving);
+    }
+
+    public static boolean destroyBlockState(IWorld world, BlockPos pos, BlockState state, boolean dropBlock) {
+        return MultipartHelperInternal.destroyBlockState(world, pos, state, dropBlock);
+    }
+
+    public static boolean testShapeOcclusion(IBlockReader world, BlockPos pos, VoxelShape shape) {
+        return MultipartHelperInternal.testOcclusion(world, pos, shape);
+    }
+
+}
diff --git a/src/main/java/com/amadornes/mcmultipart/api/package-info.java b/src/main/java/com/amadornes/mcmultipart/api/package-info.java
new file mode 100644
index 0000000..39b9373
--- /dev/null
+++ b/src/main/java/com/amadornes/mcmultipart/api/package-info.java
@@ -0,0 +1,7 @@
+@ParametersAreNonnullByDefault
+@MethodsReturnNonnullByDefault
+package com.amadornes.mcmultipart.api;
+
+import mcp.MethodsReturnNonnullByDefault;
+
+import javax.annotation.ParametersAreNonnullByDefault;
diff --git a/src/main/java/com/amadornes/mcmultipart/util/MultipartHelperInternal.java b/src/main/java/com/amadornes/mcmultipart/util/MultipartHelperInternal.java
new file mode 100644
index 0000000..6d44f98
--- /dev/null
+++ b/src/main/java/com/amadornes/mcmultipart/util/MultipartHelperInternal.java
@@ -0,0 +1,67 @@
+package com.amadornes.mcmultipart.util;
+
+import com.amadornes.mcmultipart.api.BlockSlot;
+import com.amadornes.mcmultipart.api.IMultipart;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Blocks;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.shapes.VoxelShape;
+import net.minecraft.world.IBlockReader;
+import net.minecraft.world.IWorld;
+
+import javax.annotation.Nullable;
+import java.util.Collections;
+import java.util.Set;
+
+public final class MultipartHelperInternal {
+
+    private MultipartHelperInternal() {
+    }
+
+    @Nullable
+    public static IMultipart getMultipart(Block block) {
+        return null;
+    }
+
+    public static Set<BlockState> getAllBlockStates(IBlockReader world, BlockPos pos) {
+        return Collections.singleton(world.getBlockState(pos));
+    }
+
+    public static BlockState getBlockState(IBlockReader world, BlockPos pos, BlockSlot slot) {
+        return slot == BlockSlot.FULL_BLOCK ? world.getBlockState(pos) : Blocks.AIR.getDefaultState();
+    }
+
+    @Nullable
+    public static TileEntity getTileEntity(IBlockReader world, BlockPos pos, BlockSlot slot) {
+        return slot == BlockSlot.FULL_BLOCK ? world.getTileEntity(pos) : null;
+    }
+
+    public static boolean canAddBlockState(IWorld world, BlockPos pos, BlockState state) {
+        return false;
+    }
+
+    public static void addBlockState(IWorld world, BlockPos pos, BlockState state, int flags) {
+    }
+
+    public static boolean canReplaceBlockState(IWorld world, BlockPos pos, BlockState originalState, BlockState newState) {
+        return false;
+    }
+
+    public static void replaceBlockState(IWorld world, BlockPos pos, BlockState originalState, BlockState newState, int flags) {
+    }
+
+    public static boolean removeBlockState(IWorld world, BlockPos pos, BlockState state, boolean isMoving) {
+        return false;
+    }
+
+    public static boolean destroyBlockState(IWorld world, BlockPos pos, BlockState state, boolean dropBlock) {
+        return false;
+    }
+
+    public static boolean testOcclusion(IBlockReader world, BlockPos pos, VoxelShape shape) {
+        return false;
+    }
+
+}
diff --git a/src/main/resources/META-INF/mods.toml b/src/main/resources/META-INF/mods.toml
new file mode 100644
index 0000000..105a1db
--- /dev/null
+++ b/src/main/resources/META-INF/mods.toml
@@ -0,0 +1,25 @@
+modLoader="javafml"
+loaderVersion="[28,)"
+issueTrackerURL="http://my.issue.tracker/"
+[[mods]]
+modId="mcmultipart"
+version="${file.jarVersion}"
+displayName="MCMultiPart"
+displayURL="https://github.com/amadornes/MCMultiPart"
+authors="amadornes"
+description='''
+A universal multipart API for modern Minecraft.
+'''
+
+[[dependencies.mcmultipart]]
+    modId="forge"
+    mandatory=true
+    versionRange="[28,)"
+    ordering="NONE"
+    side="BOTH"
+[[dependencies.mcmultipart]]
+    modId="minecraft"
+    mandatory=true
+    versionRange="[1.14.4]"
+    ordering="NONE"
+    side="BOTH"
diff --git a/src/main/resources/pack.mcmeta b/src/main/resources/pack.mcmeta
new file mode 100644
index 0000000..a1e342a
--- /dev/null
+++ b/src/main/resources/pack.mcmeta
@@ -0,0 +1,6 @@
+{
+    "pack": {
+        "description": "MCMultiPart resources",
+        "pack_format": 4
+    }
+}