HP1 notes

I suppose this is where I'll put assorted notes about this game now.

Stat calculation

Bug: When calculating stats, the game writes Magic Def for harry three times - for each magical spell (excluding Flipendo, which uses defense); and then only applies the boost from equipment to the first value (defense against vermi). Quirrel seems to use both Vermillious and Verdimillious, so it's sorta relevant.

Misses

• The first five spells cast on new game cannot miss.
• The chance to hit is 94%.
• Enemies have either 7/10 or 4/10 chance to hit depending on some battle flag.
• Miss calculations use hardware RNG.

Damage formula

• Formula for physical damage (including Flipendo) is Damage = SpellBase + Strength - EnemyDefense/2. SpellBase is 0 for enemies.
• Formula for magical damage is MagicDamage = ((MagicStr-EnemyMagicDef)/2 * SpellBase / 32) + SpellBase. Each of the three magical spells have their own defenses.
• If crit, Damage *= 2. Chance to crit is 1/10 (game RNG)
• Final damage formula is FinalDamage = Damage + Rnd, where Rnd is Rnd = Random(0, Damage/16) - Damage/8, or if Damage/16 == 0, Rnd=Random(0, 2) - 1.

Card combos

• Sickle Seek quadruples the battle reward sickles.
• Encounter Track makes clounds spawn two times as quickly and stops working after you hit 10 encounters.
• Rain of Bludgers is calculated like Flipendo Duo, just on all enemies.

Easter eggs

• If you have at least 10 Plain Boots in your inventory, while crossing the lake, after opening the menu, you can press B to shoot owls at enemies. The value 42 is used to signify the easter egg is active.

Scripts

I have tentatively dumped all the scripts form this game here.