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Decompile fn_06922 (CCloud::Drift)

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Batch #16357 by youko: 0 byte-identical, 1 confirmed by peer review.

- fn_06922 CCloud::Drift: logic confirmed by peer review

Peer-reviewed-by: eAthena, Yommy, Toshiro
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
This commit is contained in:
ragnarok-clanker 2026-11-10 19:08:48 +00:00
commit 69b01be75d
1 changed files with 15 additions and 9 deletions
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24
Source/Contents/Effects/CloudEffect.cpp
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@ -13,18 +13,28 @@
#include <string>
namespace {
// INLINED
__forceinline int Random(int range) {
if (range == 0) {
return 0;
}
const int value = rand() % range;
return value >= 0 ? value : 0;
}
// INLINED
__forceinline void StepDrift(int& angle, int& target) {
int goal = target;
if (goal > angle) {
angle = std::min(360, angle + 1);
if (goal < angle) {
goal = angle == 0 ? 0 : std::max(rand() % angle, 0);
goal = Random(angle);
}
} else {
angle = std::max(0, angle - 1);
if (goal >= angle) {
goal = 360 - (angle == 0 ? 0 : std::max(rand() % angle, 0));
goal = 360 - Random(angle);
}
}
target = goal;
@ -160,17 +170,13 @@ void CCloud::Drift() {
StepDrift(this->driftZ, this->driftTargetZ);
CParticle* particle = this->particle;
vector3d offset = {particle->offsetX, particle->offsetY, particle->offsetZ};
vector3d offset = *reinterpret_cast<const vector3d*>(&particle->offsetX);
offset.x = g_sinTable[this->driftX] * 0.05f + offset.x;
offset.z = g_sinTable[this->driftZ] * 0.05f + offset.z;
particle->offsetX = offset.x;
particle->offsetY = offset.y;
particle->offsetZ = offset.z;
const float x = offset.x + this->position[0];
const float y = offset.y + this->position[1];
const float z = offset.z + this->position[2];
this->particle->position.x = x;
this->particle->position.y = y;
this->particle->position.z = z;
const vector3d position = {offset.x + this->position[0], offset.y + this->position[1], offset.z + this->position[2]};
this->particle->position = position;
}