Add /lw demo degrade/recover for one-command ecosystem transformation demo
EcoDemoCommand provides two complete condition presets applied in one command:
/lw demo degrade — forces stage=MATURE_FOREST with full lush vegetation,
then applies dead soil (fertility=5, contamination=8,
erosion=8), severe drought (availability=5, risk=90),
and clean air. soilQuality collapses to ~0, triggering
VegetationModule badConditions and RecoveryModule
conditionsMissedForRegression every cycle. Region
visibly regresses toward BARREN.
/lw demo recover — caps succession at MATURE_FOREST, resets soil to
fertility=85/contamination=0/erosion=0, water to
availability=85/drought=5, seeds minimal grass.
soilQuality immediately hits ~85, unlocking full
vegetation succession chain and rapid stage advancement.
Full demo sequence:
/lw speed 20
/lw demo degrade (watch ~30s: MATURE_FOREST → BARREN)
/lw demo recover
/lw speed 50 (watch ~30s: BARREN → MATURE_FOREST)
/lw speed reset
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
George
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package com.livingworld.commands;
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import java.util.function.Supplier;
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import com.livingworld.core.LivingWorldConstants;
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import com.livingworld.modules.atmosphere.AtmosphereModule;
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import com.livingworld.modules.atmosphere.AtmosphereRegionData;
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import com.livingworld.modules.pollution.PollutionModule;
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import com.livingworld.modules.pollution.PollutionRegionData;
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import com.livingworld.modules.recovery.RecoveryModule;
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import com.livingworld.modules.recovery.RecoveryRegionData;
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import com.livingworld.modules.recovery.SuccessionStage;
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import com.livingworld.modules.soil.SoilModule;
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import com.livingworld.modules.soil.SoilRegionData;
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import com.livingworld.modules.vegetation.VegetationModule;
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import com.livingworld.modules.vegetation.VegetationRegionData;
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import com.livingworld.modules.water.WaterModule;
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import com.livingworld.modules.water.WaterRegionData;
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import com.livingworld.regions.Region;
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import com.livingworld.regions.RegionCoordinate;
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import com.livingworld.regions.RegionManager;
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import com.mojang.brigadier.builder.LiteralArgumentBuilder;
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import com.mojang.brigadier.exceptions.CommandSyntaxException;
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import net.minecraft.commands.CommandSourceStack;
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import net.minecraft.commands.Commands;
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import net.minecraft.network.chat.Component;
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import net.minecraft.server.level.ServerPlayer;
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/**
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* One-command demo presets for watching ecosystem transformation.
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*
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* <pre>
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* /lw demo degrade — forces MATURE_FOREST then applies severe drought + dead soil
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* so the region visibly regresses toward BARREN.
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* Recommended speed: /lw speed 20
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*
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* /lw demo recover — resets soil and water to lush conditions so the region
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* advances from wherever it is back toward MATURE_FOREST.
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* Recommended speed: /lw speed 50
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* </pre>
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*/
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public final class EcoDemoCommand {
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private EcoDemoCommand() {}
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public static LiteralArgumentBuilder<CommandSourceStack> build(Supplier<RegionManager> rm) {
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return Commands.literal("demo")
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.then(Commands.literal("degrade")
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.executes(ctx -> runDegrade(ctx.getSource(), rm.get())))
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.then(Commands.literal("recover")
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.executes(ctx -> runRecover(ctx.getSource(), rm.get())));
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}
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// ------------------------------------------------------------------
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// Presets
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// ------------------------------------------------------------------
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private static int runDegrade(CommandSourceStack src, RegionManager rm) {
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return applyPreset(src, rm, "DEGRADE", region -> {
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// Force starting point: peak forest.
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region.getModuleData().put(RecoveryModule.MODULE_ID,
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new RecoveryRegionData(SuccessionStage.MATURE_FOREST, 0.0, 0.0,
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SuccessionStage.MATURE_FOREST));
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// Lush vegetation so it visibly dies rather than starting at zero.
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region.getModuleData().put(VegetationModule.MODULE_ID,
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new VegetationRegionData(100.0, 80.0, 80.0, 70.0, 0.0));
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// Dead soil: near-zero fertility, high erosion and contamination.
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// soilQuality ≈ 5 − 8×0.4 − 8×0.3 = 5 − 3.2 − 2.4 = −0.6 → 0
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// That floor triggers badConditions in VegetationModule and
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// conditionsMissedForRegression in RecoveryModule every cycle.
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SoilRegionData soil = SoilRegionData.defaults();
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soil.setFertility(5.0);
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soil.setMoisture(5.0);
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soil.setContamination(8.0);
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soil.setErosion(8.0);
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region.getModuleData().put(SoilModule.MODULE_ID, soil);
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// Severe drought — water availability near zero.
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WaterRegionData water = WaterRegionData.defaults();
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water.setWaterAvailability(5.0);
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water.setDroughtRisk(90.0);
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water.setPurificationCapacity(5.0);
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region.getModuleData().put(WaterModule.MODULE_ID, water);
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// Clear pollution so it doesn't confuse the read-out (soil drives the decay here).
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region.getModuleData().put(PollutionModule.MODULE_ID, PollutionRegionData.defaults());
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// Dry sky: low rain so per-player weather reflects the drought.
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AtmosphereRegionData atm = new AtmosphereRegionData(0.05, 0.0);
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region.getModuleData().put(AtmosphereModule.MODULE_ID, atm);
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}, "Stage forced to MATURE_FOREST | Soil destroyed | Drought=90 | Use /lw speed 20 to watch");
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}
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private static int runRecover(CommandSourceStack src, RegionManager rm) {
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return applyPreset(src, rm, "RECOVER", region -> {
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// Raise cap — region must be allowed to reach MATURE_FOREST again.
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RecoveryRegionData rec = region.getModuleData()
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.get(RecoveryModule.MODULE_ID, RecoveryRegionData.class)
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.orElseGet(RecoveryRegionData::defaults);
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rec.setMaxSuccessionStage(SuccessionStage.MATURE_FOREST);
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region.getModuleData().put(RecoveryModule.MODULE_ID, rec);
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// Rich, clean soil — contamination and erosion both zeroed.
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SoilRegionData soil = SoilRegionData.defaults();
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soil.setFertility(85.0);
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soil.setMoisture(75.0);
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soil.setContamination(0.0);
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soil.setErosion(0.0);
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region.getModuleData().put(SoilModule.MODULE_ID, soil);
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// Plentiful water, no drought.
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WaterRegionData water = WaterRegionData.defaults();
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water.setWaterAvailability(85.0);
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water.setDroughtRisk(5.0);
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water.setPurificationCapacity(80.0);
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region.getModuleData().put(WaterModule.MODULE_ID, water);
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// Clean air.
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region.getModuleData().put(PollutionModule.MODULE_ID, PollutionRegionData.defaults());
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// Good rain signal in the atmosphere.
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AtmosphereRegionData atm = new AtmosphereRegionData(0.75, 0.0);
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region.getModuleData().put(AtmosphereModule.MODULE_ID, atm);
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// Seed minimal grass so vegetation succession has something to start from.
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// (Shrubs and trees grow naturally from here.)
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VegetationRegionData veg = region.getModuleData()
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.get(VegetationModule.MODULE_ID, VegetationRegionData.class)
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.orElseGet(VegetationRegionData::defaults);
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veg.setGrassPressure(Math.max(veg.getGrassPressure(), 5.0));
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veg.setDeadVegetation(0.0);
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region.getModuleData().put(VegetationModule.MODULE_ID, veg);
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}, "Cap raised to MATURE_FOREST | Soil+water restored | Use /lw speed 50 to watch");
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}
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// ------------------------------------------------------------------
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private static int applyPreset(CommandSourceStack src, RegionManager rm,
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String label, RegionMutation mutation, String hint) {
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if (rm == null) { src.sendFailure(Component.literal("Region manager not ready.")); return 0; }
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ServerPlayer player;
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try { player = src.getPlayerOrException(); }
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catch (CommandSyntaxException e) {
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src.sendFailure(Component.literal("/lw demo must be run by a player."));
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return 0;
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}
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String dimId = player.level().dimension().location().toString();
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int rx = (int) Math.floor(player.getX() / (LivingWorldConstants.DEFAULT_REGION_SIZE_CHUNKS * 16.0));
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int rz = (int) Math.floor(player.getZ() / (LivingWorldConstants.DEFAULT_REGION_SIZE_CHUNKS * 16.0));
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RegionCoordinate coord = new RegionCoordinate(dimId, rx, rz);
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Region region = rm.getOrCreateRegion(coord);
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mutation.apply(region);
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rm.markDirty(region);
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src.sendSuccess(() -> Component.literal(
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"[LW] Demo:" + label + " applied to (" + rx + "," + rz + ") — " + hint), false);
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return 1;
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}
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@FunctionalInterface
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private interface RegionMutation { void apply(Region region); }
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}
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@@ -143,7 +143,8 @@ public final class LivingWorldCommandRoot {
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false);
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false);
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return 1;
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return 1;
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})))
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})))
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.then(RegionSetCommand.build(regionManager)));
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.then(RegionSetCommand.build(regionManager))
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.then(EcoDemoCommand.build(regionManager)));
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}
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}
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private static int toggleHud(CommandSourceStack source, Function<UUID, Boolean> hudToggle) {
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private static int toggleHud(CommandSourceStack source, Function<UUID, Boolean> hudToggle) {
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