nether portal particles

src/main/java/de/bixilon/minosoft/data/mappings/blocks/types/Block.kt

@@ -22,6 +22,7 @@ import de.bixilon.minosoft.data.mappings.blocks.BlockUsages
 import de.bixilon.minosoft.data.mappings.blocks.RandomOffsetTypes
 import de.bixilon.minosoft.data.mappings.blocks.entites.BlockEntityType
 import de.bixilon.minosoft.data.mappings.blocks.properties.BlockProperties
+import de.bixilon.minosoft.data.mappings.blocks.types.portal.NetherPortalBlock
 import de.bixilon.minosoft.data.mappings.blocks.types.redstone.ComparatorBlock
 import de.bixilon.minosoft.data.mappings.blocks.types.redstone.RepeaterBlock
 import de.bixilon.minosoft.data.mappings.blocks.types.wall.LeverBlock
@@ -122,6 +123,7 @@ open class Block(
             "BedBlock" to { resourceLocation, registries, data -> BedBlock(resourceLocation, registries, data) },
             "BrewingStandBlock" to { resourceLocation, registries, data -> BrewingStandBlock(resourceLocation, registries, data) },
             "EnderChestBlock" to { resourceLocation, registries, data -> EnderChestBlock(resourceLocation, registries, data) },
+            "NetherPortalBlock" to { resourceLocation, registries, data -> NetherPortalBlock(resourceLocation, registries, data) },
         )
 
         override fun deserialize(registries: Registries?, resourceLocation: ResourceLocation, data: JsonObject): Block {

src/main/java/de/bixilon/minosoft/data/mappings/blocks/types/portal/NetherPortalBlock.kt

@@ -0,0 +1,58 @@
+/*
+ * Minosoft
+ * Copyright (C) 2021 Moritz Zwerger
+ *
+ * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This software is not affiliated with Mojang AB, the original developer of Minecraft.
+ */
+
+package de.bixilon.minosoft.data.mappings.blocks.types.portal
+
+import com.google.gson.JsonObject
+import de.bixilon.minosoft.data.Directions
+import de.bixilon.minosoft.data.mappings.ResourceLocation
+import de.bixilon.minosoft.data.mappings.blocks.BlockState
+import de.bixilon.minosoft.data.mappings.blocks.types.Block
+import de.bixilon.minosoft.data.mappings.versions.Registries
+import de.bixilon.minosoft.gui.rendering.particle.types.render.texture.simple.PortalParticle
+import de.bixilon.minosoft.gui.rendering.util.VecUtil.of
+import de.bixilon.minosoft.gui.rendering.util.VecUtil.plus
+import de.bixilon.minosoft.protocol.network.connection.PlayConnection
+import glm_.vec3.Vec3d
+import glm_.vec3.Vec3i
+import kotlin.random.Random
+
+open class NetherPortalBlock(resourceLocation: ResourceLocation, registries: Registries, data: JsonObject) : Block(resourceLocation, registries, data) {
+    private val portalParticleType = registries.particleTypeRegistry[PortalParticle]
+
+    override fun randomTick(connection: PlayConnection, blockState: BlockState, blockPosition: Vec3i, random: Random) {
+        super.randomTick(connection, blockState, blockPosition, random)
+
+        portalParticleType?.let {
+            val position = Vec3d(blockPosition) + { random.nextDouble() }
+            val velocity = Vec3d.of { (random.nextDouble() - 0.5) * 0.5 }
+
+            val factor = (random.nextInt(2) * 2 + 1).toDouble()
+
+            if (connection.world[blockPosition + Directions.WEST]?.block != this && connection.world[blockPosition + Directions.EAST]?.block != this) {
+                position.x = blockPosition.x * 0.5 + 0.25 * factor
+                velocity.x = random.nextDouble() * 2.0 * factor
+            } else {
+                position.z = blockPosition.x * 0.5 + 0.25 * factor
+                velocity.z = random.nextDouble() * 2.0 * factor
+            }
+            connection.world += PortalParticle(
+                connection,
+                position,
+                velocity,
+                it.default(),
+            )
+        }
+    }
+}
+

src/main/java/de/bixilon/minosoft/gui/rendering/util/VecUtil.kt

@@ -109,6 +109,14 @@ object VecUtil {
         )
     }
 
+    fun Vec3d.Companion.of(lambda: () -> Double): Vec3d {
+        return Vec3d(
+            x = lambda(),
+            y = lambda(),
+            z = lambda(),
+        )
+    }
+
     infix operator fun Vec3i.plus(lambda: () -> Int): Vec3i {
         return Vec3i(
             x = x + lambda(),