nether-entry

name	nether_entry
description	Acquire obsidian, build a Nether portal with build, ignite it with flint & steel via interact_at, and enter the Nether with the right packlist.

Skill: nether_entry

Phase 2 of the dragon route. Build a portal, ignite it, walk through. Actual Nether survival starts in blaze_rods.

Done when

• A lit Nether portal stands at a known overworld location (report its coordinates to your owner — it's the way home)
• You are standing in the Nether with the packlist below intact

Obsidian (need 10)

Mine it from a ruined portal — a structure that's just standing obsidian, no lava-casting. This is the only route: casting your own (water over lava) leaves every fresh obsidian block touching lava, and I refuse to mine fluid-adjacent blocks (it would flood or burn the dig), so a cast wall is unminable by design.

1. locate_structure("#minecraft:ruined_portal") — searches the whole family and returns the nearest. Skip ruined_portal_ocean (underwater) if the result names it; re-search or pick a land one — I can't dive.
2. equip_item(diamond_pickaxe) (obsidian needs diamond), goto the portal coordinates.
3. mine(obsidian, 10) — it digs the frame's obsidian on its own. ~9.4s per block is normal.

Notes:

• A portal's frame mixes plain obsidian with crying obsidian (purple particles). Crying obsidian is a different block and useless for a portal frame — mine(obsidian) already ignores it, so a single portal may yield fewer than 10. If you come up short, locate_structure("#minecraft:ruined_portal") again for the next nearest and top up.
• If mine reports it skipped blocks "against water or lava", that portal sits in a wet/lava pocket — relocate to a cleaner one rather than fighting the fluid.

Portal build

• Frame: 4 wide × 5 tall, corners omitted = exactly 10 obsidian, standing vertically. Inner opening is 2×3 air.
• Pick flat ground near your base. Build the frame with one build call: two side columns of 3, plus top and bottom rows of 2. Use place_block only for a nearby single-cell correction.
• Flint & steel: craft flint_and_steel = 1 iron ingot + 1 flint, a 2×2 recipe (lookup_recipe + transfer into your own grid; see the containers skill). Flint drops from mine(gravel), ~10%/block.
• Ignite: interact_at(button=right, x, y, z, item_id=minecraft:flint_and_steel) aimed at an empty air cell INSIDE the frame (a bottom one), not at the obsidian. The fire lands in that cell and the portal forms.
• Enter: goto the portal cell and stand in it until the dimension changes (get_self_status confirms).

Packlist (verify with get_self_status before igniting)

Item	Qty	Why
Cooked food	32+	Your healing
Diamond sword + bow	1 + 1	Equip for combat only — hold the pickaxe while travelling (navigation digs with the held tool)
Arrows	32+	ranged_attack consumes them (~6 per blaze); run low → switch to melee + extra food
Diamond pickaxe (+ iron backup)	1 + 1	Obsidian, digging
Cobblestone	64+	Navigation scaffold — bridging lava lakes eats it
Gold helmet (worn)	1	Piglin truce; 5 gold ingots if you must craft one
Flint & steel	1	Re-light the portal if a ghast blows it out

Never place or use a bed in the Nether — beds explode there.

Nether ground rules

• Don't dig straight down; lava oceans sit under most terrain. Navigation bridges lava when it must — keep cobblestone stocked.
• Water doesn't exist here: buckets won't place.
• Zombified piglins are pacifists until hit — and then they ALL swarm. Never melee_attack them.
• Ghasts snipe from far; their fireballs can break the portal. On arrival, note the Nether-side portal coordinates (get_self_status) and report them to your owner. Overworld↔Nether coordinates map 8:1 horizontally.

What to load next

Standing in the Nether, packlist intact → mark phase 2 completed, load_skill(name="blaze_rods"). Load combat_basics too if you haven't — blazes are the first real combat test.