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Document Probability Distribution of Calls to rand_int (#1063)

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* document probability of the majority of conditional calls to rand_int

* update positions of else/elseif comments

* remove unneeded documentation
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Lincoln-LM 2023-06-15 19:22:26 -06:00 committed by GitHub
parent c3690e380e
commit d65dce43df
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8 changed files with 36 additions and 31 deletions
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2
include/common_structs.h
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@ -915,7 +915,7 @@ typedef struct BattleStatus {
/* 0x09F */ char unk_9F;
/* 0x0A0 */ struct EffectInstance* waterBlockEffect;
/* 0x0A4 */ s8 cloudNineTurnsLeft;
/* 0x0A5 */ s8 cloudNineDodgeChance; /* = 50% */
/* 0x0A5 */ s8 cloudNineDodgeChance; /* = 50/101 ≈ 49.5% */
/* 0x0A6 */ char unk_A6[2];
/* 0x0A8 */ struct EffectInstance* cloudNineEffect;
/* 0x0AC */ s8 merleeAttackBoost;

42
src/16F740.c
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@ -47,29 +47,30 @@ void btl_merlee_on_start_turn(void) {
if (currentEncounter->currentEnemy != NULL) {
if (currentEncounter->currentEnemy->flags & ACTOR_FLAG_NO_HEALTH_BAR) {
// 46/101 ≈ 45.5%
if (temp <= 45) {
playerData->merleeSpellType = MERLEE_SPELL_1;
} else if (temp <= 90) {
} else if (temp <= 90) { // 45/101 ≈ 44.6%
playerData->merleeSpellType = MERLEE_SPELL_2;
} else {
} else { // 10/101 ≈ 9.9%
playerData->merleeSpellType = MERLEE_SPELL_EXP_BOOST;
}
} else if (temp <= 30) {
} else if (temp <= 30) { // 31/101 ≈ 30.7%
playerData->merleeSpellType = MERLEE_SPELL_1;
} else if (temp <= 60) {
} else if (temp <= 60) { // 30/101 ≈ 29.7%
playerData->merleeSpellType = MERLEE_SPELL_2;
} else if (temp <= 80) {
} else if (temp <= 80) { // 20/101 ≈ 19.8%
playerData->merleeSpellType = MERLEE_SPELL_EXP_BOOST;
} else {
} else { // 20/101 ≈ 19.8%
playerData->merleeSpellType = MERLEE_SPELL_COIN_BOOST;
}
} else if (temp <= 30) {
} else if (temp <= 30) { // 31/101 ≈ 30.7%
playerData->merleeSpellType = MERLEE_SPELL_1;
} else if (temp <= 60) {
} else if (temp <= 60) { // 30/101 ≈ 29.7%
playerData->merleeSpellType = MERLEE_SPELL_2;
} else if (temp <= 80) {
} else if (temp <= 80) { // 20/101 ≈ 19.8%
playerData->merleeSpellType = MERLEE_SPELL_EXP_BOOST;
} else {
} else { // 20/101 ≈ 19.8%
playerData->merleeSpellType = MERLEE_SPELL_COIN_BOOST;
}
@ -104,29 +105,30 @@ void btl_merlee_on_first_strike(void) {
if (currentEncounter->currentEnemy != NULL) {
if (currentEncounter->currentEnemy->flags & ACTOR_FLAG_NO_HEALTH_BAR) {
// 46/101 ≈ 45.5%
if (temp <= 45) {
playerData->merleeSpellType = MERLEE_SPELL_1;
} else if (temp <= 90) {
} else if (temp <= 90) { // 45/101 ≈ 44.6%
playerData->merleeSpellType = MERLEE_SPELL_2;
} else {
} else { // 10/101 ≈ 9.9%
playerData->merleeSpellType = MERLEE_SPELL_EXP_BOOST;
}
} else if (temp <= 30) {
} else if (temp <= 30) { // 31/101 ≈ 30.7%
playerData->merleeSpellType = MERLEE_SPELL_1;
} else if (temp <= 60) {
} else if (temp <= 60) { // 30/101 ≈ 29.7%
playerData->merleeSpellType = MERLEE_SPELL_2;
} else if (temp <= 80) {
} else if (temp <= 80) { // 20/101 ≈ 19.8%
playerData->merleeSpellType = MERLEE_SPELL_EXP_BOOST;
} else {
} else { // 20/101 ≈ 19.8%
playerData->merleeSpellType = MERLEE_SPELL_COIN_BOOST;
}
} else if (temp <= 30) {
} else if (temp <= 30) { // 31/101 ≈ 30.7%
playerData->merleeSpellType = MERLEE_SPELL_1;
} else if (temp <= 60) {
} else if (temp <= 60) { // 30/101 ≈ 29.7%
playerData->merleeSpellType = MERLEE_SPELL_2;
} else if (temp <= 80) {
} else if (temp <= 80) { // 20/101 ≈ 19.8%
playerData->merleeSpellType = MERLEE_SPELL_EXP_BOOST;
} else {
} else { // 20/101 ≈ 19.8%
playerData->merleeSpellType = MERLEE_SPELL_COIN_BOOST;
}

12
src/182B30.c
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@ -10,9 +10,9 @@ enum StandardPalettes {
STANDARD_PAL_STATIC = 3,
};
#define UNPACK_PAL_R(color) (((color) >> 11) & 0x1F)
#define UNPACK_PAL_G(color) (((color) >> 6) & 0x1F)
#define UNPACK_PAL_B(color) (((color) >> 1) & 0x1F)
#define UNPACK_PAL_R(color) (((color) >> 11) & 0x1F)
#define UNPACK_PAL_G(color) (((color) >> 6) & 0x1F)
#define UNPACK_PAL_B(color) (((color) >> 1) & 0x1F)
#define UNPACK_PAL_A(color) ((color) & 1)
#define PACK_PAL_RGBA(r, g, b, a) (((r) << 11) | ((g) << 6) | ((b) << 1) | (a));
@ -2293,7 +2293,7 @@ void render_with_static_palettes(b32 isNpcSprite, ActorPart* part, s32 yaw, Matr
decorationTable->resetPalAdjust = FALSE;
decorationTable->nextPalTime = 0;
}
if (!skipAnimation) {
if (decorationTable->nextPalTime == 0) {
decorationTable->palAnimState += 2;
@ -2414,7 +2414,7 @@ void render_with_fear_palettes(b32 isNpcSprite, ActorPart* part, s32 yaw, Matrix
r /= 2;
g /= 2;
b /= 2;
*palOut++ = PACK_PAL_RGBA(r, g, b, a);
}
}
@ -2424,6 +2424,7 @@ void render_with_fear_palettes(b32 isNpcSprite, ActorPart* part, s32 yaw, Matrix
part->palAnimPosOffset[0] = FearPaletteAnimXOffsets[abs(decorationTable->nextPalTime)];
if (part->palAnimPosOffset[0] == PAL_ANIM_END) {
part->palAnimPosOffset[0] = 0;
// 30-90
decorationTable->nextPalTime = rand_int(60) + 30;
}
}
@ -2563,6 +2564,7 @@ void render_with_paralyze_palettes(b32 isNpcSprite, ActorPart* part, s32 yaw, Ma
part->palAnimPosOffset[1] = ParalyzePaletteAnimXOffsets[abs(decorationTable->nextPalTime)];
if (part->palAnimPosOffset[1] == PAL_ANIM_END) {
part->palAnimPosOffset[1] = 0;
// 30-90
decorationTable->nextPalTime = rand_int(60) + 30;
}
}

2
src/1AC760.c
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@ -766,7 +766,7 @@ HitResult calc_partner_damage_enemy(void) {
if (battleStatus->lastAttackDamage > 0) {
sfx_play_sound_at_position(SOUND_231, SOUND_SPACE_MODE_0, state->goalPos.x, state->goalPos.y, state->goalPos.z);
}
if (battleStatus->lastAttackDamage > 0 || (battleStatus->currentAttackElement & DAMAGE_TYPE_STATUS_ALWAYS_HITS && tempBinary)) {
if (gBattleStatus.flags1 & BS_FLAGS1_40) {
show_action_rating(ACTION_RATING_NICE, target, state->goalPos.x, state->goalPos.y, state->goalPos.z);

2
src/C50A0.c
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@ -2300,7 +2300,7 @@ void update_item_entity_collectable(ItemEntity* item) {
}
}
// if the item has non-zero lateral velocity, try moving it laterally
// if the item has non-zero lateral velocity, try moving it laterally
if (!(item->flags & (ITEM_ENTITY_FLAG_DONE_FALLING | ITEM_ENTITY_FLAG_NO_MOTION))
&& item->spawnType != ITEM_SPAWN_MODE_ITEM_BLOCK_SPAWN_ALWAYS
&& item->spawnType != ITEM_SPAWN_MODE_TOSS_FADE1

2
src/battle/battle.h
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@ -386,7 +386,7 @@ typedef struct Stage {
/* 0x18 */ s32* foregroundModelList;
/* 0x1C */ s32 stageEnemyCount; // number of enemies in the stageFormation
/* 0x20 */ Formation* stageFormation; // extra enemies native to this stage
/* 0x24 */ s32 stageEnemyChance; // chance for stageFormation enemies to spawn: N = 0 means always, N > 0 is 1/N chance
/* 0x24 */ s32 stageEnemyChance; // 1/(N+1) chance for stageFormation enemies to spawn
} Stage; // size = 0x28
/// Zero-terminated.

4
src/battle/move/item/shooting_star.c
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@ -10,8 +10,8 @@
API_CALLABLE(N(func_802A123C_71D9AC)) {
s32 t1 = 200;
s32 r1 = rand_int(t1) + 100; // 100-299
s32 r2 = rand_int(40); // 0-39
s32 r1 = rand_int(t1) + 100; // 100-300
s32 r2 = rand_int(40); // 0-40
f32 var_f22;
if ((script->varTable[0] % 4) != 0) {

1
src/main_loop.c
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@ -152,6 +152,7 @@ void step_game_loop(void) {
gOverrideFlags &= ~GLOBAL_OVERRIDES_8000;
}
// Unused rand_int used to advance the global random seed each visual frame
rand_int(1);
}