[Darkatek7]

Summary

A stability pass on Gen 4 Platinum, plus three new supported dumps and gamepad play on the DS lower screen:

• Platinum (Europe) and Platin Edition (Germany) import as alternates of platinum.
• Renegade Platinum is its own version, renegadeplatinum, on the Platinum engine.
• Xbox/SDL gamepads can now reach the DS lower screen.

Every change to Gen 4 behaviour is gated so Gen 1–3, HGSS and BW stay as they were. A US Rev 1 import is byte-identical to one made before this branch, except for one new field, constants.shinyUnder = 8.

Platinum stability

Story

• tools/gen4_playthrough/platinum.lua now runs the whole story and post-game to Heatran: 91/91 beats.
• It also passes with PT_CONTINUE=1, which saves, encodes, restores and continues between every beat.
• Fixed:
  • Lifts in the Distortion World now carry Cynthia across floors.
  • Gen 4 Pokémon now record their met location, from the map label.
  • BattleState.metHere uses the live map rather than the last save.

Battles

• New fuzzer tools/gen4_battle_fuzz. It plays whole battles through the real BattleState, menus, bag and party screens, with random parties.
• Thousands of battles now run with no Lua error, hang or invalid state: all 927 trainers, doubles, wild battles and catches.
• Fixed:
  • In doubles, locked actions (Bide, charge, recharge) went to the wrong slot.
  • In doubles, using an item took the whole turn.
  • Torment, or Taunt on an all-status moveset, softlocked the menu instead of falling back to Struggle.
  • The experience award could crash with an empty player slot.
  • Spread moves announced the move once per target.
  • A simultaneous wipe is now a draw, played as a loss, as on the cartridge.
  • Encore'd Pokémon lost their turn.
  • A Pokémon fainting from end-of-turn damage in doubles was not replaced, which could leave both player slots empty.
• Trainer Pokémon now get the cartridge's deterministic personality (TrainerData_BuildParty): nature, first ability slot, class-based gender and IVs. Platinum family only; Frontier trainers keep their own rules.

Field and menus

• New sweep tools/gen4_field_sweep.py covers all 593 map headers. It warps in, walks, rides, takes warps, talks to every NPC and sign, and fuzzes every start-menu, party, bag and Pokétch action. It now reports 0 failures.
• Fixed:
  • The party picker for move tutors, NPC trades and the daycare froze behind a fade when cancelled with B.
  • A trainer's walk-up crashed on Route 207 while a map script was still running.
  • The Battle Factory rental screen could not be closed, and resuming a Factory save could crash.

Check suite

• Roamer calls are now gated to Gen 4. Sweet Scent and Teleport were the two ungated ones, and escorted steps could fall through to Johto's roaming check.
• 14 stale checks and stubs were updated.
• Hard-coded G:/ paths now come from GEN4_DATA or %APPDATA%.

New dumps

Dump	SHA-1	How
Platinum (Europe), CPUE rev 10	8d15cd44…	Same ARM9 and overlays as US Rev 1. Only 5 files differ, and its Game Corner has no slot machines. No mapping needed.
Platin Edition (Germany), CPUD	5d009a17…	Every ARM9/overlay table is found by content. Gen4Regions and the generated Gen4RegionMap (paths and member counts only) alias the 32 moved language archives. Runtime lookups that compared English text (HM prefix, Pokétch apps, "Mystery Zone", bag pockets, items, natures in saves) now key on ids. German battle text comes from the cartridge's own bank 368, through a generated table that holds entry numbers only.
Renegade Platinum	381f9eef…	Its own version, renegadeplatinum. Fairy is slot 9, using the hack's 18x18 chart from overlay 21 and its icons. The import reads the hack's shiny threshold, intro Pokémon, party-icon palettes, prizes and the dialogue of its 138 added trainers. tools/gen4_playthrough passes 100/100 beats on it, with the hack's story changes added to the beats.

tools/gen4_region_check.lua diffs every generated table between two caches. EU and DE show no data differences outside text and the known cartridge differences. See docs/rom-revisions.md and docs/renegade-platinum.md.

Gamepad

• New src/core/PadPointer.lua: RT toggles a cursor on the DS lower screen. The stick or D-pad moves it, and A taps or drags through the same touchpressed path as a mouse.
  • It reaches the Pokétch apps, the battle bag and party, the Underground, contests and dress-up, Poffins and mining.
  • It works in every second-screen display mode.
• The stick has diagonal hysteresis.
• Input is tracked per pad, so two pads don't double-press.
• Hotplug is supported.
• The TOUCH binding can be rebound.
• The mapping is documented in docs/controller.md.

Testing

• Imports: fresh headless imports of all four dumps complete.
• Every cache (US, EU, DE, Renegade):
  • command audit (85)
  • gameplay regression (35)
  • trainer messages
  • met location
  • Distortion World surfaces
• Platinum (US, DE) and Renegade: trainer personality, 4,787 checks.
• Single checks:
  • German battle text, 96/0
  • pad injection, 83/83
  • tools/rom_revisions_check.lua, 169/169
• Battle fuzzer: 300 mixed battles each on US, DE and Renegade, plus 700 doubles on US, all clean.
• Field sweep: 593/593 maps each on US, DE and Renegade.
• Hardware: played by hand with an Xbox One controller on Windows, on the German dump and on Renegade.

Not covered

• Rarer German battle lines (under 1%) stay in English where the cartridge has no matching line.
• Renegade's optional content has not been walked.
• The shared Gen 3 doubles code has the same bugs as above and was left alone.
• HGSS and BW were not run.
• The French, Italian and Spanish cartridges would need their own region maps.