That's one heck of a commit you've got there...

I may have got a bit behind with version control. A lot behind, in fact. Maybe I'll go back and split this sometime - then again, I probably won't. But hey, at least it's here!
2019-08-18 00:04:18 +01:00
parent 2680d02304
commit f37812be3e
1564 changed files with 47652 additions and 12984 deletions
@@ -0,0 +1,116 @@
+package electroblob.wizardry.potion;
+
+import electroblob.wizardry.Wizardry;
+import electroblob.wizardry.item.ItemArtefact;
+import electroblob.wizardry.registry.WizardryBlocks;
+import electroblob.wizardry.registry.WizardryItems;
+import electroblob.wizardry.registry.WizardryPotions;
+import electroblob.wizardry.util.ParticleBuilder;
+import electroblob.wizardry.util.ParticleBuilder.Type;
+import net.minecraft.block.BlockLiquid;
+import net.minecraft.block.material.Material;
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.enchantment.EnchantmentFrostWalker;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.init.Blocks;
+import net.minecraft.util.EnumFacing;
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.MathHelper;
+import net.minecraft.world.World;
+import net.minecraftforge.event.entity.living.LivingEvent.LivingUpdateEvent;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.common.ObfuscationReflectionHelper;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+
+import java.lang.reflect.Field;
+
+@Mod.EventBusSubscriber
+public class PotionFrostStep extends PotionMagicEffect implements ICustomPotionParticles {
+
+	private static final Field prevBlockPos = ObfuscationReflectionHelper.findField(EntityLivingBase.class, "field_184620_bC");
+
+	public PotionFrostStep(boolean isBadEffect, int liquidColour){
+		super(isBadEffect, liquidColour, new ResourceLocation(Wizardry.MODID, "textures/gui/potion_icon_frost_step.png"));
+		this.setPotionName("potion." + Wizardry.MODID + ":frost_step");
+	}
+
+//	@Override
+//	public boolean isReady(int duration, int amplifier){
+//		return true; // Execute the effect every tick
+//	}
+
+	@Override
+	public void spawnCustomParticle(World world, double x, double y, double z){
+		ParticleBuilder.create(Type.SNOW).pos(x, y, z).time(15 + world.rand.nextInt(5)).spawn(world);
+	}
+
+	// Use LivingUpdateEvent instead of performEffect because it gets called before the actual frost walker processing
+	// performEffect is called afterwards, at which point prevBlockPos has already been set to the current position
+	// regardless of whether the player is wearing frost walker boots or not
+
+	@SubscribeEvent
+	public static void onLivingUpdateEvent(LivingUpdateEvent event){
+
+		EntityLivingBase host = event.getEntityLiving();
+
+		if(host.isPotionActive(WizardryPotions.frost_step)){
+			// Mimics the behaviour of the frost walker enchantment itself
+			if(!host.world.isRemote){
+
+				BlockPos currentPos = new BlockPos(host);
+
+				try{
+
+					if(!currentPos.equals(prevBlockPos.get(host))){
+
+						prevBlockPos.set(host, currentPos);
+
+						int strength = host.getActivePotionEffect(WizardryPotions.frost_step).getAmplifier();
+
+						EnchantmentFrostWalker.freezeNearby(host, host.world, currentPos, strength);
+
+						if(host instanceof EntityPlayer && ItemArtefact.isArtefactActive((EntityPlayer)host, WizardryItems.charm_lava_walking)){
+							freezeNearbyLava(host, host.world, currentPos, strength);
+						}
+					}
+
+				}catch(IllegalAccessException e){
+					Wizardry.logger.error("Error accessing living entity previous block pos:", e);
+				}
+			}
+		}
+	}
+
+	/** Copied from {@link EnchantmentFrostWalker#freezeNearby(EntityLivingBase, World, BlockPos, int)} and modified
+	 * to turn lava to obsidian crust blocks instead. */
+	private static void freezeNearbyLava(EntityLivingBase living, World world, BlockPos pos, int level){
+
+		if(living.onGround){
+
+			float f = (float)Math.min(16, 2 + level);
+			BlockPos.MutableBlockPos pos1 = new BlockPos.MutableBlockPos(0, 0, 0);
+
+			for(BlockPos.MutableBlockPos pos2 : BlockPos.getAllInBoxMutable(pos.add((double)(-f), -1.0D, (double)(-f)), pos.add((double)f, -1.0D, (double)f))){
+
+				if(pos2.distanceSqToCenter(living.posX, living.posY, living.posZ) <= (double)(f * f)){
+
+					pos1.setPos(pos2.getX(), pos2.getY() + 1, pos2.getZ());
+					IBlockState state1 = world.getBlockState(pos1);
+
+					if(state1.getMaterial() == Material.AIR){
+
+						IBlockState state2 = world.getBlockState(pos2);
+
+						if(state2.getMaterial() == Material.LAVA && (state2.getBlock() == Blocks.LAVA || state2.getBlock() == Blocks.FLOWING_LAVA) && state2.getValue(BlockLiquid.LEVEL) == 0 && world.mayPlace(WizardryBlocks.obsidian_crust, pos2, false, EnumFacing.DOWN, null)){
+							world.setBlockState(pos2, WizardryBlocks.obsidian_crust.getDefaultState());
+							world.scheduleUpdate(pos2.toImmutable(), WizardryBlocks.obsidian_crust, MathHelper.getInt(living.getRNG(), 60, 120));
+						}
+					}
+				}
+			}
+		}
+	}
+
+}