Implement Energy Portal

build.gradle

@@ -10,7 +10,8 @@ compileJava {
 version = project.mod_version
 group = project.maven_group
 
-minecraft {
+loom {
+    accessWidener "src/main/resources/energonrelics.accesswidener"
 }
 
 repositories {

src/main/java/com/thebrokenrail/energonrelics/block/portal/EnergyPortalBlock.java

@@ -2,12 +2,18 @@ package com.thebrokenrail.energonrelics.block.portal;
 
 import com.thebrokenrail.energonrelics.EnergonRelics;
 import com.thebrokenrail.energonrelics.block.util.SimpleBlock;
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
 import net.fabricmc.fabric.api.object.builder.v1.block.FabricBlockSettings;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
 import net.minecraft.block.ShapeContext;
 import net.minecraft.block.piston.PistonBehavior;
 import net.minecraft.entity.Entity;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.sound.SoundCategory;
+import net.minecraft.sound.SoundEvents;
+import net.minecraft.util.function.BooleanBiFunction;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Direction;
 import net.minecraft.util.shape.VoxelShape;
@@ -16,6 +22,8 @@ import net.minecraft.world.BlockView;
 import net.minecraft.world.World;
 import net.minecraft.world.WorldAccess;
 
+import java.util.Random;
+
 @SuppressWarnings("deprecation")
 public class EnergyPortalBlock extends SimpleBlock {
     public EnergyPortalBlock() {
@@ -27,11 +35,6 @@ public class EnergyPortalBlock extends SimpleBlock {
         return false;
     }
 
-    @Override
-    public VoxelShape getVisualShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
-        return VoxelShapes.empty();
-    }
-
     private static final VoxelShape SHAPE = createCuboidShape(0, 6, 0, 16, 10, 16);
 
     @Override
@@ -65,7 +68,7 @@ public class EnergyPortalBlock extends SimpleBlock {
         return validSides == 4;
     }
 
-    private static BlockPos getCenterPos(WorldAccess world, BlockPos pos) {
+    static BlockPos getCenterPos(WorldAccess world, BlockPos pos) {
         BlockPos centerPos = pos;
         for (Direction side : Direction.values()) {
             if (isValidDirection(side)) {
@@ -137,9 +140,19 @@ public class EnergyPortalBlock extends SimpleBlock {
     public void onEntityCollision(BlockState state, World world, BlockPos pos, Entity entity) {
         super.onEntityCollision(state, world, pos, entity);
 
-        if (!world.isClient() && !entity.hasVehicle() && entity.canUsePortals() && ((PortalCooldownEntity) entity).isEnergyPortalCooldown()) {
-            // Teleport
+        if (!world.isClient() && !entity.hasVehicle() && entity.canUsePortals() && !((PortalCooldownEntity) entity).isEnergyPortalCooldown() && VoxelShapes.matchesAnywhere(VoxelShapes.cuboid(entity.getBoundingBox().offset(-pos.getX(), -pos.getY(), -pos.getZ())), state.getOutlineShape(world, pos), BooleanBiFunction.AND)) {
             ((PortalCooldownEntity) entity).resetEnergyPortalCooldown();
+            EnergyTeleporter.teleport((ServerWorld) world, entity.getPos(), pos, entity);
+        }
+    }
+
+    @Environment(EnvType.CLIENT)
+    @Override
+    public void randomDisplayTick(BlockState state, World world, BlockPos pos, Random random) {
+        super.randomDisplayTick(state, world, pos, random);
+
+        if (random.nextInt(100) == 0) {
+            world.playSound((double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D, (double) pos.getZ() + 0.5D, SoundEvents.BLOCK_PORTAL_AMBIENT, SoundCategory.BLOCKS, 0.5f, random.nextFloat() * 0.4f + 0.8f, false);
         }
     }
 }

src/main/java/com/thebrokenrail/energonrelics/block/portal/EnergyTeleporter.java

@@ -0,0 +1,81 @@
+package com.thebrokenrail.energonrelics.block.portal;
+
+import com.mojang.brigadier.exceptions.CommandSyntaxException;
+import com.thebrokenrail.energonrelics.config.HardcodedConfig;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Blocks;
+import net.minecraft.entity.Entity;
+import net.minecraft.network.packet.s2c.play.PlayerPositionLookS2CPacket;
+import net.minecraft.server.command.TeleportCommand;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.registry.RegistryKey;
+import net.minecraft.world.Heightmap;
+import net.minecraft.world.World;
+
+import java.util.EnumSet;
+
+class EnergyTeleporter {
+    private static void teleport(Entity entity, ServerWorld to, Vec3d pos) {
+        try {
+            TeleportCommand.teleport(null, entity, to, pos.getX(), pos.getY(), pos.getZ(), EnumSet.noneOf(PlayerPositionLookS2CPacket.Flag.class), entity.yaw, entity.pitch, null);
+        } catch (CommandSyntaxException ignored) {
+        }
+    }
+
+    static void teleport(ServerWorld world, Vec3d pos, BlockPos blockPos, Entity entity) {
+        BlockPos center = EnergyPortalBlock.getCenterPos(world, blockPos);
+        Vec3d offset = pos.subtract(Vec3d.ofBottomCenter(center));
+
+        RegistryKey<World> worldKey = world.getRegistryKey();
+        if (worldKey == World.OVERWORLD) {
+            teleportWithMultiplier(world, entity, center, offset, World.NETHER, 1d / HardcodedConfig.ENERGY_PORTAL_MULTIPLIER);
+        } else if (worldKey == World.NETHER) {
+            teleportWithMultiplier(world, entity, center, offset, World.OVERWORLD, HardcodedConfig.ENERGY_PORTAL_MULTIPLIER);
+        } else {
+            teleportToWorldSpawn(world, entity);
+        }
+    }
+
+    private static void teleportWithMultiplier(ServerWorld world, Entity entity, BlockPos center, Vec3d offset, RegistryKey<World> toKey, double multiplier) {
+        ServerWorld to = world.getServer().getWorld(toKey);
+        assert to != null;
+
+        float yMultiplier = (float) to.getDimensionHeight() / (float) world.getDimensionHeight();
+        int y = (int) (center.getY() * yMultiplier);
+
+        int x = (int) (center.getX() * multiplier);
+        int z = (int) (center.getZ() * multiplier);
+
+        BlockPos targetBlock = new BlockPos(x, y, z);
+
+        BlockPos start = targetBlock.add(-1, -1, -1);
+        for (int xPos = 0; xPos < 3; xPos++) {
+            for (int yPos = 0; yPos < 4; yPos++) {
+                for (int zPos = 0; zPos < 3; zPos++) {
+                    BlockPos pos = start.add(xPos, yPos, zPos);
+                    BlockState oldState = to.getBlockState(pos);
+                    if (oldState.getHardness(world, pos) >= 0) {
+                        Block block = yPos == 0 ? Blocks.OBSIDIAN : Blocks.AIR;
+                        BlockState state = block.getDefaultState();
+                        to.setBlockState(pos, state);
+                    }
+                }
+            }
+        }
+
+        Vec3d target = Vec3d.ofBottomCenter(targetBlock).add(offset);
+        target = new Vec3d(target.getX(), Math.max(0, target.getY()), target.getZ());
+
+        teleport(entity, to, target);
+    }
+
+    private static void teleportToWorldSpawn(ServerWorld world, Entity entity) {
+        ServerWorld to = world.getServer().getWorld(World.OVERWORLD);
+        assert to != null;
+        BlockPos dest = to.getTopPosition(Heightmap.Type.MOTION_BLOCKING_NO_LEAVES, to.getSpawnPos());
+        teleport(entity, to, Vec3d.ofBottomCenter(dest));
+    }
+}

src/main/java/com/thebrokenrail/energonrelics/config/HardcodedConfig.java

@@ -46,5 +46,6 @@ public class HardcodedConfig {
     public static final int INFUSER_TIME = 2200;
 
     public static final long ENERGY_PROJECTOR_ENERGY_REQUIRED = 37;
-    public static final int ENERGY_PORTAL_COOLDOWN = 20;
+    public static final int ENERGY_PORTAL_COOLDOWN = 28;
+    public static final int ENERGY_PORTAL_MULTIPLIER = 32;
 }

src/main/resources/energonrelics.accesswidener

@@ -0,0 +1,2 @@
+accessWidener v1 named
+accessible method net/minecraft/server/command/TeleportCommand teleport (Lnet/minecraft/server/command/ServerCommandSource;Lnet/minecraft/entity/Entity;Lnet/minecraft/server/world/ServerWorld;DDDLjava/util/Set;FFLnet/minecraft/server/command/TeleportCommand$LookTarget;)V

src/main/resources/fabric.mod.json

@@ -32,6 +32,7 @@
     "mixins": [
         "energonrelics.mixins.json"
     ],
+    "accessWidener" : "energonrelics.accesswidener",
     "depends": {
         "fabricloader": ">=0.7.4",
         "fabric": "*",