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Diffstat (limited to 'engine/experience.asm')
-rwxr-xr-x | engine/experience.asm | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/engine/experience.asm b/engine/experience.asm deleted file mode 100755 index 2efc13de..00000000 --- a/engine/experience.asm +++ /dev/null @@ -1,160 +0,0 @@ -; calculates the level a mon should be based on its current exp -CalcLevelFromExperience: - ld a, [wLoadedMonSpecies] - ld [wd0b5], a - call GetMonHeader - ld d, $1 ; init level to 1 -.loop - inc d ; increment level - call CalcExperience - push hl - ld hl, wLoadedMonExp + 2 ; current exp -; compare exp needed for level d with current exp - ld a, [hExperience + 2] - ld c, a - ld a, [hld] - sub c - ld a, [hExperience + 1] - ld c, a - ld a, [hld] - sbc c - ld a, [hExperience] - ld c, a - ld a, [hl] - sbc c - pop hl - jr nc, .loop ; if exp needed for level d is not greater than exp, try the next level - dec d ; since the exp was too high on the last loop iteration, go back to the previous value and return - ret - -; calculates the amount of experience needed for level d -CalcExperience: - ld a, [wMonHGrowthRate] - add a - add a - ld c, a - ld b, 0 - ld hl, GrowthRateTable - add hl, bc - call CalcDSquared - ld a, d - ld [H_MULTIPLIER], a - call Multiply - ld a, [hl] - and $f0 - swap a - ld [H_MULTIPLIER], a - call Multiply - ld a, [hli] - and $f - ld [H_DIVISOR], a - ld b, $4 - call Divide - ld a, [H_QUOTIENT + 1] - push af - ld a, [H_QUOTIENT + 2] - push af - ld a, [H_QUOTIENT + 3] - push af - call CalcDSquared - ld a, [hl] - and $7f - ld [H_MULTIPLIER], a - call Multiply - ld a, [H_PRODUCT + 1] - push af - ld a, [H_PRODUCT + 2] - push af - ld a, [H_PRODUCT + 3] - push af - ld a, [hli] - push af - xor a - ld [H_MULTIPLICAND], a - ld [H_MULTIPLICAND + 1], a - ld a, d - ld [H_MULTIPLICAND + 2], a - ld a, [hli] - ld [H_MULTIPLIER], a - call Multiply - ld b, [hl] - ld a, [H_PRODUCT + 3] - sub b - ld [H_PRODUCT + 3], a - ld b, $0 - ld a, [H_PRODUCT + 2] - sbc b - ld [H_PRODUCT + 2], a - ld a, [H_PRODUCT + 1] - sbc b - ld [H_PRODUCT + 1], a -; The difference of the linear term and the constant term consists of 3 bytes -; starting at H_PRODUCT + 1. Below, hExperience (an alias of that address) will -; be used instead for the further work of adding or subtracting the squared -; term and adding the cubed term. - pop af - and $80 - jr nz, .subtractSquaredTerm ; check sign - pop bc - ld a, [hExperience + 2] - add b - ld [hExperience + 2], a - pop bc - ld a, [hExperience + 1] - adc b - ld [hExperience + 1], a - pop bc - ld a, [hExperience] - adc b - ld [hExperience], a - jr .addCubedTerm -.subtractSquaredTerm - pop bc - ld a, [hExperience + 2] - sub b - ld [hExperience + 2], a - pop bc - ld a, [hExperience + 1] - sbc b - ld [hExperience + 1], a - pop bc - ld a, [hExperience] - sbc b - ld [hExperience], a -.addCubedTerm - pop bc - ld a, [hExperience + 2] - add b - ld [hExperience + 2], a - pop bc - ld a, [hExperience + 1] - adc b - ld [hExperience + 1], a - pop bc - ld a, [hExperience] - adc b - ld [hExperience], a - ret - -; calculates d*d -CalcDSquared: - xor a - ld [H_MULTIPLICAND], a - ld [H_MULTIPLICAND + 1], a - ld a, d - ld [H_MULTIPLICAND + 2], a - ld [H_MULTIPLIER], a - jp Multiply - -; each entry has the following scheme: -; %AAAABBBB %SCCCCCCC %DDDDDDDD %EEEEEEEE -; resulting in -; (a*n^3)/b + sign*c*n^2 + d*n - e -; where sign = -1 <=> S=1 -GrowthRateTable: - db $11,$00,$00,$00 ; medium fast n^3 - db $34,$0A,$00,$1E ; (unused?) 3/4 n^3 + 10 n^2 - 30 - db $34,$14,$00,$46 ; (unused?) 3/4 n^3 + 20 n^2 - 70 - db $65,$8F,$64,$8C ; medium slow: 6/5 n^3 - 15 n^2 + 100 n - 140 - db $45,$00,$00,$00 ; fast: 4/5 n^3 - db $54,$00,$00,$00 ; slow: 5/4 n^3 |