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!

src/main/java/electroblob/wizardry/packet/PacketCastSpellAtPos.java

@@ -0,0 +1,85 @@
+package electroblob.wizardry.packet;
+
+import electroblob.wizardry.Wizardry;
+import electroblob.wizardry.spell.Spell;
+import electroblob.wizardry.util.SpellModifiers;
+import io.netty.buffer.ByteBuf;
+import net.minecraft.util.EnumFacing;
+import net.minecraft.util.math.Vec3d;
+import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
+import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler;
+import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;
+
+/**
+ * <b>[Server -> Client]</b> This packet is sent when a spell is cast at a position by commands and returns true, and is
+ * sent to clients so they can spawn the particles themselves.
+ */
+// Soooo many spell casting packets...
+public class PacketCastSpellAtPos implements IMessageHandler<PacketCastSpellAtPos.Message, IMessage> {
+
+	@Override
+	public IMessage onMessage(Message message, MessageContext ctx){
+
+		// Just to make sure that the side is correct
+		if(ctx.side.isClient()){
+			// Using a fully qualified name is a good course of action here; we don't really want to clutter the proxy
+			// methods any more than necessary.
+			net.minecraft.client.Minecraft.getMinecraft().addScheduledTask(() -> Wizardry.proxy.handleCastSpellAtPosPacket(message));
+		}
+
+		return null;
+	}
+
+	public static class Message implements IMessage {
+
+		/** Position for the spell */
+		public Vec3d position;
+		/** Direction for the spell */
+		public EnumFacing direction;
+		/** ID of the spell being cast */
+		public int spellID;
+		/** SpellModifiers for the spell */
+		public SpellModifiers modifiers;
+		/** Number of ticks to cast the spell for, or -1 for non-continuous spells */
+		public int duration;
+
+		// This constructor is required otherwise you'll get errors (used somewhere in fml through reflection)
+		public Message(){}
+
+		public Message(Vec3d position, EnumFacing direction, Spell spell, SpellModifiers modifiers){
+			this(position, direction, spell, modifiers, -1);
+		}
+
+		public Message(Vec3d position, EnumFacing direction, Spell spell, SpellModifiers modifiers, int duration){
+			this.spellID = spell.networkID();
+			this.modifiers = modifiers;
+			this.position = position;
+			this.direction = direction;
+			this.duration = duration;
+		}
+
+		@Override
+		public void fromBytes(ByteBuf buf){
+
+			// The order is important
+			position = new Vec3d(buf.readDouble(), buf.readDouble(), buf.readDouble());
+			direction = EnumFacing.byIndex(buf.readInt());
+			this.spellID = buf.readInt();
+			this.modifiers = new SpellModifiers();
+			this.modifiers.read(buf);
+			this.duration = buf.readInt();
+		}
+
+		@Override
+		public void toBytes(ByteBuf buf){
+
+			buf.writeDouble(position.x);
+			buf.writeDouble(position.y);
+			buf.writeDouble(position.z);
+			buf.writeInt(direction.getIndex());
+			buf.writeInt(spellID);
+			this.modifiers.write(buf);
+			buf.writeInt(duration);
+		}
+	}
+}