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Render clouds as flat when thickness is zero (#14897)

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sfan5 2024-08-12 15:35:00 +02:00 committed by GitHub
parent 013c6ee166
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3 changed files with 11 additions and 5 deletions
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3
doc/lua_api.md
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@ -8404,7 +8404,8 @@ child will follow movement and rotation of that bone.
ColorSpec (alpha ignored, default `#000000`)
* `height`: cloud height, i.e. y of cloud base (default per conf,
usually `120`)
* `thickness`: cloud thickness in nodes (default `16`)
* `thickness`: cloud thickness in nodes (default `16`).
if set to zero the clouds are rendered flat.
* `speed`: 2D cloud speed + direction in nodes per second
(default `{x=0, z=-2}`).
* `get_clouds()`: returns a table with the current cloud parameters as in

8
src/client/clouds.cpp
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@ -127,7 +127,7 @@ void Clouds::updateMesh()
m_last_noise_center = center_of_drawing_in_noise_i;
m_mesh_valid = true;
const u32 num_faces_to_draw = m_enable_3d ? 6 : 1;
const u32 num_faces_to_draw = is3D() ? 6 : 1;
// The world position of the integer center point of drawing in the noise
v2f world_center_of_drawing_in_noise_f = v2f(
@ -220,7 +220,7 @@ void Clouds::updateMesh()
const f32 rx = cloud_size / 2.0f;
// if clouds are flat, the top layer should be at the given height
const f32 ry = m_enable_3d ? m_params.thickness * BS : 0.0f;
const f32 ry = is3D() ? m_params.thickness * BS : 0.0f;
const f32 rz = cloud_size / 2;
for(u32 i = 0; i < num_faces_to_draw; i++)
@ -363,7 +363,7 @@ void Clouds::render()
updateAbsolutePosition();
}
m_material.BackfaceCulling = m_enable_3d;
m_material.BackfaceCulling = is3D();
if (m_enable_shaders)
m_material.EmissiveColor = m_color.toSColor();
@ -413,7 +413,7 @@ void Clouds::update(const v3f &camera_p, const video::SColorf &color_diffuse)
// is the camera inside the cloud mesh?
m_camera_pos = camera_p;
m_camera_inside_cloud = false; // default
if (m_enable_3d) {
if (is3D()) {
float camera_height = camera_p.Y - BS * m_camera_offset.Y;
if (camera_height >= m_box.MinEdge.Y &&
camera_height <= m_box.MaxEdge.Y) {

5
src/client/clouds.h
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@ -145,6 +145,11 @@ private:
bool gridFilled(int x, int y) const;
// Are the clouds 3D?
inline bool is3D() const {
return m_enable_3d && m_params.thickness >= 0.01f;
}
video::SMaterial m_material;
irr_ptr<scene::SMeshBuffer> m_meshbuffer;
// Value of m_origin at the time the mesh was last updated