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| -rw-r--r-- | docs/bugs_and_glitches.md | 38 |
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diff --git a/docs/bugs_and_glitches.md b/docs/bugs_and_glitches.md index bf7c1d71e..d246d3916 100644 --- a/docs/bugs_and_glitches.md +++ b/docs/bugs_and_glitches.md @@ -30,6 +30,7 @@ These are known bugs and glitches in the original Pokémon Crystal game: code th - [Dragon Scale, not Dragon Fang, boosts Dragon-type moves](#dragon-scale-not-dragon-fang-boosts-dragon-type-moves) - [Daisy's grooming doesn't always increase happiness](#daisys-grooming-doesnt-always-increase-happiness) - [Magikarp in Lake of Rage are shorter, not longer](#magikarp-in-lake-of-rage-are-shorter-not-longer) +- [Magikarp lengths in Lake of Rage have a unit conversion error](#magikarp-lengths-in-lake-of-rage-have-a-unit-conversion-error) - [Magikarp lengths can be miscalculated](#magikarp-lengths-can-be-miscalculated) - [Battle transitions fail to account for the enemy's level](#battle-transitions-fail-to-account-for-the-enemys-level) - [Slot machine payout sound effects cut each other off](#slot-machine-payout-sound-effects-cut-each-other-off) @@ -784,6 +785,43 @@ This is a bug with `LoadEnemyMon.CheckMagikarpArea` in [engine/battle/core.asm]( **Fix:** Change both `jr z, .Happiness` to `jr nz, .Happiness`. +## Magikarp lengths in Lake of Rage have a unit conversion error + +This is a bug with `LoadEnemyMon.CheckMagikarpArea` in [engine/battle/core.asm](/engine/battle/core.asm): + +```asm +; Get Magikarp's length + ld de, EnemyMonDVs + ld bc, PlayerID + callfar CalcMagikarpLength + +; We're clear if the length is < 1536 + ld a, [wMagikarpLength] + cp HIGH(1536) + jr nz, .CheckMagikarpArea + +; 5% chance of skipping both size checks + call Random + cp 5 percent + jr c, .CheckMagikarpArea +; Try again if > 1614 + ld a, [wMagikarpLength + 1] + cp LOW(1616) + jr nc, .GenerateDVs + +; 20% chance of skipping this check + call Random + cp 20 percent - 1 + jr c, .CheckMagikarpArea +; Try again if > 1598 + ld a, [wMagikarpLength + 1] + cp LOW(1600) + jr nc, .GenerateDVs +``` + +*To do:* Fix this bug. + + ## Magikarp lengths can be miscalculated This is a bug with `CalcMagikarpLength.BCLessThanDE` in [engine/events/magikarp.asm](/engine/events/magikarp.asm): |