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Tweak snow/rainfall animation

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Now the vertical speed at which snow moves is slightly randomized
Also offset the height of one of the planes to avoid unnatural mirrored effect on textures
This commit is contained in:
Goodlyay 2023-04-21 19:52:36 -07:00
parent 9fef44c07d
commit 1aa975bd6f
1 changed files with 16 additions and 10 deletions
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26
src/EnvRenderer.c
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@ -435,7 +435,7 @@ void EnvRenderer_RenderWeather(double deltaTime) {
int weather, vCount;
IVec3 pos;
cc_bool moved, particles;
float speed, vOffset;
float speed, vOffsetBase, vOffset;
PackedCol col;
int dist, dx, dz, x, z;
@ -457,9 +457,9 @@ void EnvRenderer_RenderWeather(double deltaTime) {
pos.Y += 64;
pos.Y = max(World.Height, pos.Y);
speed = (weather == WEATHER_RAINY ? 1.0f : 0.2f) * Env.WeatherSpeed;
vOffset = (float)Game.Time * speed;
particles = weather == WEATHER_RAINY;
speed = (weather == WEATHER_RAINY ? 1.0f : 0.2f) * Env.WeatherSpeed;
vOffsetBase = (float)Game.Time * speed;
particles = weather == WEATHER_RAINY;
weather_accumulator += deltaTime;
v = vertices;
@ -486,8 +486,13 @@ void EnvRenderer_RenderWeather(double deltaTime) {
uOffset2 = 0;
if (weather == WEATHER_SNOWY) {
Random_Seed(&snowDirRng, (x + 1217 * z) & 0x7fffffff);
uOffset1 = ((float)Game.Time * (Random_Float(&snowDirRng) * (1 - -1) + -1)) * Env.WeatherSpeed * 0.5f;
uOffset2 = ((float)Game.Time * (Random_Float(&snowDirRng) * (1 - -1) + -1)) * Env.WeatherSpeed * 0.5f;
/* Multiply horizontal speed by a random float from -1 to 1 */
uOffset1 = ((float)Game.Time * (Random_Float(&snowDirRng) * 2 + -1)) * Env.WeatherSpeed * 0.5f;
uOffset2 = ((float)Game.Time * (Random_Float(&snowDirRng) * 2 + -1)) * Env.WeatherSpeed * 0.5f;
/* Multiply vertical speed by a random float from 1.0 to 0.25 */
vOffset = vOffsetBase * (float)(Random_Float(&snowDirRng) * (1.0f - 0.25f) + 0.25f);
} else {
vOffset = vOffsetBase;
}
worldV = vOffset + (z & 1) / 2.0f - (x & 0x0F) / 16.0f;
@ -496,10 +501,11 @@ void EnvRenderer_RenderWeather(double deltaTime) {
x1 = (float)x; y1 = (float)y; z1 = (float)z;
x2 = (float)(x + 1); y2 = (float)(y + height); z2 = (float)(z + 1);
v->X = x1; v->Y = y1; v->Z = z1; v->Col = col; v->U = 0.0f + uOffset1; v->V = v1; v++;
v->X = x1; v->Y = y2; v->Z = z1; v->Col = col; v->U = 0.0f + uOffset1; v->V = v2; v++;
v->X = x2; v->Y = y2; v->Z = z2; v->Col = col; v->U = 1.0f + uOffset1; v->V = v2; v++;
v->X = x2; v->Y = y1; v->Z = z2; v->Col = col; v->U = 1.0f + uOffset1; v->V = v1; v++;
/* Add 0.25 to v on one plane so that the texture doesn't align to create a noticable mirror effect down the middle */
v->X = x1; v->Y = y1; v->Z = z1; v->Col = col; v->U = 0.0f + uOffset1; v->V = v1+0.25f; v++;
v->X = x1; v->Y = y2; v->Z = z1; v->Col = col; v->U = 0.0f + uOffset1; v->V = v2+0.25f; v++;
v->X = x2; v->Y = y2; v->Z = z2; v->Col = col; v->U = 1.0f + uOffset1; v->V = v2+0.25f; v++;
v->X = x2; v->Y = y1; v->Z = z2; v->Col = col; v->U = 1.0f + uOffset1; v->V = v1+0.25f; v++;
v->X = x2; v->Y = y1; v->Z = z1; v->Col = col; v->U = 1.0f + uOffset2; v->V = v1; v++;
v->X = x2; v->Y = y2; v->Z = z1; v->Col = col; v->U = 1.0f + uOffset2; v->V = v2; v++;