迷你版《随机天气》

King · 发表于 7 天前

随机天气的微小源变更。
降雪缓慢，降雪迅速，雨水。
这个代码能随机生成天气，2-5分钟内你可以更改，
玩得开心。

#define __RANDOM_WEATHER // 添加了随机天气：雨/雪/无SkyBox.cpp

void CSkyBox::Process()
{
if (!g_Option.m_nWeatherEffect) return;
if (m_pWorld)
{
#ifdef __RANDOM_WEATHER
static DWORD dwNextWeatherChange =
timeGetTime() + (120000 + rand() % 180000); // 2–5 Minuten
DWORD dwNow = timeGetTime();
if (dwNow >= dwNextWeatherChange)
{
dwNextWeatherChange =
dwNow + (120000 + rand() % 180000); // 2–5 Minuten
int rnd = rand() % 100;
int nNextWeather;
if (rnd < 35)
nNextWeather = WEATHER_NONE;
else if (rnd < 70)
nNextWeather = WEATHER_RAIN;
else
nNextWeather = WEATHER_SNOW;
if (m_nWeather != nNextWeather)
{
if (nNextWeather == WEATHER_NONE)
{
SetWeather(m_nWeather, FALSE);
m_nWeather = WEATHER_NONE;
}
else
{
SetWeather(nNextWeather, TRUE);
}
InitFall();
}
}
#endif
#ifdef __JEFF_11
#ifdef __CLIENT
if (m_pWorld->GetID() == WI_WORLD_KEBARAS)
{
if (CWorld::m_skyBox.GetWeather() != WEATHER_SNOW)
CWorld::m_skyBox.SetWeather(WEATHER_SNOW, TRUE);
}
#endif // __CLIENT
#endif // __JEFF_11
BOOL bFall = FALSE;
if (m_nWeather == WEATHER_RAIN)
{
for (int i = 0; i < (int)(m_nFall); i++)
{
FLOAT fheight = m_pWorld->GetLandHeight_Fast(m_vFall[i].x, m_vFall[i].z) - 1.0f;
if (fheight == 0) fheight = 100000.0f;
if (1) //m_timerWeather.IsTimeOut() == FALSE )
{
if (fheight > m_vFall[i].y)
{
if (xRandom(10) >= 7)
{
D3DXVECTOR3 v3Pos;
D3DXVECTOR3 vec3Tri[3];
m_pWorld->GetLandTri(m_vFall[i].x, m_vFall[i].z, vec3Tri);
FLOAT ffHeight = m_pWorld->GetLandHeight(m_vFall[i].x, m_vFall[i].z);
D3DXVECTOR3 vVector1 = vec3Tri[2] - vec3Tri[0];
D3DXVECTOR3 vVector2 = vec3Tri[1] - vec3Tri[0];
D3DXVECTOR3 vNormal;
D3DXVec3Cross(&vNormal, &vVector1, &vVector2);
D3DXVec3Normalize(&vNormal, &vNormal);
D3DXVECTOR3 v3Up = D3DXVECTOR3(0.0f, -1.0f, 0.0f);
D3DXVECTOR3 v3Cross;
FLOAT fDot;
FLOAT fTheta;
D3DXVec3Cross(&v3Cross, &v3Up, &vNormal);
fDot = D3DXVec3Dot(&v3Up, &vNormal);
fTheta = acos(fDot);
D3DXQUATERNION qDirMap;
D3DXQuaternionRotationAxis(&qDirMap, &v3Cross, fTheta);
v3Pos = m_vFall[i];
v3Pos.y = ffHeight + 0.1f;
D3DXVECTOR3 vYPW;
QuaternionRotationToYPW(qDirMap, vYPW);
LPWATERHEIGHT pWaterHeight = m_pWorld->GetWaterHeight(m_vFall[i]);
if (pWaterHeight &&
(pWaterHeight->byWaterTexture & (byte)(~MASK_WATERFRAME)) == WTYPE_WATER)
{
FLOAT fHeight = (FLOAT)pWaterHeight->byWaterHeight;
v3Pos.y = fHeight;
CSfx* pObj = CreateSfx(g_Neuz.m_pd3dDevice, XI_GEN_RAINCIRCLE01, v3Pos);
FLOAT fscal = (FLOAT)(xRandom(2) + 1);
fscal *= 0.1f;
pObj->SetScale(D3DXVECTOR3(fscal, fscal, fscal));
}
else
{
FLOAT fscal = xRandom(2) + 0.05f;
CSfx* pObj = CreateSfx(g_Neuz.m_pd3dDevice, XI_GEN_RAINCIRCLE01, v3Pos);
fscal *= 0.1f;
pObj->SetScale(D3DXVECTOR3(fscal, fscal, fscal));
pObj->m_pSfxObj->m_vRotate.x = D3DXToDegree(vYPW.x);
pObj->m_pSfxObj->m_vRotate.y = D3DXToDegree(vYPW.y);
pObj->m_pSfxObj->m_vRotate.z = D3DXToDegree(vYPW.z);
}
}
m_vFall[i].x = g_pPlayer->GetPos().x + (float(rand() - RAND_MAX / 2) / RAND_MAX * 70);
m_vFall[i].z = g_pPlayer->GetPos().z + (float(rand() - RAND_MAX / 2) / RAND_MAX * 70);
m_vFall[i].y = g_pPlayer->GetPos().y + 10 + (float(rand()) / RAND_MAX * 10);
}
else
{
m_vFall[i] += m_vVelocity[i] * 1.5;
}
bFall = TRUE;
}
else
if (fheight < m_vFall[i].y)
{
bFall = TRUE;
m_vFall[i] += m_vVelocity[i] * 1.5;
}
}
}
else if (m_nWeather == WEATHER_SNOW )
{
for (int i = 0; i < (int)(m_nFall); i++)
{
FLOAT fheight = m_pWorld->GetLandHeight_Fast(m_vFall[i].x, m_vFall[i].z) - 1.0f;
if (fheight == 0)
fheight = 100000.0f;
if (1) //m_timerWeather.IsTimeOut() == FALSE )
{
if (fheight > m_vFall[i].y)
{
m_vFall[i].x = g_pPlayer->GetPos().x + (float(rand() - RAND_MAX / 2) / RAND_MAX * 70);
m_vFall[i].z = g_pPlayer->GetPos().z + (float(rand() - RAND_MAX / 2) / RAND_MAX * 70);
m_vFall[i].y = g_pPlayer->GetPos().y + 10 + (float(rand()) / RAND_MAX * 20);
}
else
m_vFall[i] += m_vVelocity[i];
bFall = TRUE;
}
else
if (fheight < m_vFall[i].y)
{
bFall = TRUE;
m_vFall[i] += m_vVelocity[i];
}
}
}
// if( bFall == FALSE )
// m_nWeather = WEATHER_NONE;
}
}

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initfall
// -------------------------------------------------
// KEIN STURM, KEIN WIND
// -------------------------------------------------
m_bStorm = false;
// -------------------------------------------------
// PARTIKEL-MENGE (ruhig & wenig)
// -------------------------------------------------
if (m_nWeather == WEATHER_RAIN)
m_nFall = 300; // 🌧 sehr sanfter Regen
else if (m_nWeather == WEATHER_SNOW)
m_nFall = 250; // ❄ ruhiger Schnee
else
m_nFall = 0;
// -------------------------------------------------
// INTENSITÄT (sehr sanft)
// -------------------------------------------------
float rainIntensity = -0.015f; // langsamer, ruhiger Fall
float snowIntensity = -0.005f;
// -------------------------------------------------
// FALL-PARTIKEL
// -------------------------------------------------
for (int i = 0; i < m_nFall; i++)
{
m_vFall[i].x = g_pPlayer->GetPos().x +
(float(rand() - RAND_MAX / 2) / RAND_MAX * 60.0f);
m_vFall[i].z = g_pPlayer->GetPos().z +
(float(rand() - RAND_MAX / 2) / RAND_MAX * 60.0f);
m_vFall[i].y = g_pPlayer->GetPos().y +
10.0f + (float(rand()) / RAND_MAX * 8.0f);
// -----------------------------
// RAIN (ruhig, gerade)
// -----------------------------
if (m_nWeather == WEATHER_RAIN)
{
int y = -6 - xRandom(6);
m_vVelocity[i] = D3DXVECTOR3(
0.0f, // kein Wind
float(y) / 220.0f - 0.04f + rainIntensity,
0.0f
);
}
// -----------------------------
// SNOW (ruhig)
// -----------------------------
else if (m_nWeather == WEATHER_SNOW)
{
int y = -1 - xRandom(2);
m_vVelocity[i] = D3DXVECTOR3(
0.0f,
float(y) / 320.0f - 0.01f + snowIntensity,
0.0f
);
}
}
}

复制代码

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迷你版《随机天气》

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