package com.oceanring.mixin; import com.oceanring.OceanRingConfig; import com.oceanring.OceanRingMod; import net.minecraft.block.BlockState; import net.minecraft.block.Blocks; import net.minecraft.block.KelpBlock; import net.minecraft.block.SeagrassBlock; import net.minecraft.block.TallSeagrassBlock; import net.minecraft.block.enums.DoubleBlockHalf; import net.minecraft.util.math.BlockPos; import net.minecraft.world.ChunkRegion; import net.minecraft.world.chunk.Chunk; import net.minecraft.world.gen.chunk.ChunkGenerator; import org.spongepowered.asm.mixin.Mixin; import org.spongepowered.asm.mixin.injection.At; import org.spongepowered.asm.mixin.injection.Inject; import org.spongepowered.asm.mixin.injection.callback.CallbackInfo; import java.util.Random; @Mixin(ChunkGenerator.class) public class ChunkGeneratorMixin { @Inject(method = "generateFeatures", at = @At("HEAD")) private void beforeGenerateFeatures(ChunkRegion region, Chunk chunk, CallbackInfo ci) { int chunkX = chunk.getPos().x; int chunkZ = chunk.getPos().z; float transitionFactor = OceanRingConfig.getTransitionFactor(chunkX, chunkZ); if (transitionFactor > 0.0f) { OceanRingMod.LOGGER.debug("Generating ocean ring chunk at {}, {} (transition: {})", chunkX, chunkZ, transitionFactor); int minY = chunk.getBottomY(); int maxY = chunk.getTopY(); BlockState deepslate = Blocks.DEEPSLATE.getDefaultState(); BlockState stone = Blocks.STONE.getDefaultState(); BlockState sand = Blocks.SAND.getDefaultState(); BlockState gravel = Blocks.GRAVEL.getDefaultState(); BlockState water = Blocks.WATER.getDefaultState(); BlockState air = Blocks.AIR.getDefaultState(); for (int x = 0; x < 16; x++) { for (int z = 0; z < 16; z++) { int worldX = chunk.getPos().getStartX() + x; int worldZ = chunk.getPos().getStartZ() + z; int oceanFloorY = OceanRingConfig.getOceanFloorHeight(worldX, worldZ, transitionFactor); int sandDepth = OceanRingConfig.getSandDepth(worldX, worldZ); for (int y = minY; y < maxY; y++) { BlockPos pos = new BlockPos(worldX, y, worldZ); BlockState currentState = chunk.getBlockState(pos); BlockState newState; if (y < oceanFloorY - sandDepth - 5) { if (transitionFactor < 1.0f && !currentState.isAir() && !currentState.isOf(Blocks.WATER)) { continue; } newState = (y <= -50) ? deepslate : stone; } else if (y < oceanFloorY - sandDepth) { if (transitionFactor < 1.0f && !currentState.isAir() && !currentState.isOf(Blocks.WATER)) { continue; } newState = ((worldX + worldZ + y) % 7 == 0) ? gravel : stone; } else if (y < oceanFloorY) { newState = sand; } else if (y <= OceanRingConfig.SEA_LEVEL) { newState = water; } else { if (transitionFactor < 1.0f) { continue; } newState = air; } chunk.setBlockState(pos, newState, false); } } } // Generate vegetation (kelp and seagrass) after terrain if (transitionFactor > 0.5f) { // Only in full ocean or strong transition generateVegetation(chunk, transitionFactor); } } } private void generateVegetation(Chunk chunk, float transitionFactor) { Random random = new Random(chunk.getPos().toLong()); for (int x = 0; x < 16; x++) { for (int z = 0; z < 16; z++) { int worldX = chunk.getPos().getStartX() + x; int worldZ = chunk.getPos().getStartZ() + z; int oceanFloorY = OceanRingConfig.getOceanFloorHeight(worldX, worldZ, transitionFactor); BlockPos floorPos = new BlockPos(worldX, oceanFloorY, worldZ); // Only place vegetation on sand if (!chunk.getBlockState(floorPos).isOf(Blocks.SAND)) { continue; } // Check if there's water above BlockPos abovePos = floorPos.up(); if (!chunk.getBlockState(abovePos).isOf(Blocks.WATER)) { continue; } // Kelp generation if (random.nextDouble() < OceanRingConfig.KELP_CHANCE * transitionFactor) { int kelpHeight = OceanRingConfig.KELP_MIN_HEIGHT + random.nextInt(OceanRingConfig.KELP_MAX_HEIGHT - OceanRingConfig.KELP_MIN_HEIGHT + 1); for (int i = 0; i < kelpHeight && oceanFloorY + 1 + i <= OceanRingConfig.SEA_LEVEL; i++) { BlockPos kelpPos = new BlockPos(worldX, oceanFloorY + 1 + i, worldZ); if (chunk.getBlockState(kelpPos).isOf(Blocks.WATER)) { BlockState kelpState = Blocks.KELP_PLANT.getDefaultState(); if (i == kelpHeight - 1 || oceanFloorY + 1 + i == OceanRingConfig.SEA_LEVEL) { // Top kelp block kelpState = Blocks.KELP.getDefaultState() .with(KelpBlock.AGE, random.nextInt(26)); } chunk.setBlockState(kelpPos, kelpState, false); } else { break; } } } // Seagrass generation (if no kelp) else if (random.nextDouble() < OceanRingConfig.SEAGRASS_CHANCE * transitionFactor) { if (random.nextDouble() < 0.3) { // Tall seagrass (30% of seagrass) BlockPos bottomPos = abovePos; BlockPos topPos = bottomPos.up(); if (chunk.getBlockState(bottomPos).isOf(Blocks.WATER) && chunk.getBlockState(topPos).isOf(Blocks.WATER)) { chunk.setBlockState(bottomPos, Blocks.TALL_SEAGRASS.getDefaultState() .with(TallSeagrassBlock.HALF, DoubleBlockHalf.LOWER), false); chunk.setBlockState(topPos, Blocks.TALL_SEAGRASS.getDefaultState() .with(TallSeagrassBlock.HALF, DoubleBlockHalf.UPPER), false); } } else { // Regular seagrass chunk.setBlockState(abovePos, Blocks.SEAGRASS.getDefaultState(), false); } } } } }