oss/luanti
oss/luanti
1
0
Fork 0
mirror of https://github.com/luanti-org/luanti.git synced 2025-06-27 16:36:03 +00:00
Code Wiki Activity

Add clouds API

Browse source
This commit is contained in:
Ben Deutsch 2017-03-17 10:39:47 +01:00 • committed by paramat
parent 95409da87d
commit f1d7a26b7c
17 changed files with 357 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

90
src/clouds.cpp
View file

@ -32,6 +32,7 @@ irr::scene::ISceneManager *g_menucloudsmgr = NULL;
static void cloud_3d_setting_changed(const std::string &settingname, void *data)
{
// TODO: only re-read cloud settings, not height or radius
((Clouds *)data)->readSettings();
}
@ -44,9 +45,10 @@ Clouds::Clouds(
):
scene::ISceneNode(parent, mgr, id),
m_seed(seed),
m_camera_pos(0,0),
m_time(0),
m_camera_offset(0,0,0)
m_camera_pos(0.0f, 0.0f),
m_origin(0.0f, 0.0f),
m_camera_offset(0.0f, 0.0f, 0.0f),
m_color(1.0f, 1.0f, 1.0f, 1.0f)
{
m_material.setFlag(video::EMF_LIGHTING, false);
//m_material.setFlag(video::EMF_BACK_FACE_CULLING, false);
@ -57,14 +59,18 @@ Clouds::Clouds(
//m_material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
m_material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
m_params.density = 0.4f;
m_params.thickness = 16.0f;
m_params.color_bright = video::SColor(229, 255, 240, 240);
m_params.color_ambient = video::SColor(255, 0, 0, 0);
m_params.speed = v2f(0.0f, -2.0f);
m_passed_cloud_y = cloudheight;
readSettings();
g_settings->registerChangedCallback("enable_3d_clouds",
&cloud_3d_setting_changed, this);
m_box = aabb3f(-BS*1000000,m_cloud_y-BS,-BS*1000000,
BS*1000000,m_cloud_y+BS,BS*1000000);
updateBox();
}
Clouds::~Clouds()
@ -88,6 +94,10 @@ void Clouds::OnRegisterSceneNode()
void Clouds::render()
{
if (m_params.density <= 0.0f)
return; // no need to do anything
video::IVideoDriver* driver = SceneManager->getVideoDriver();
if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_TRANSPARENT)
@ -107,15 +117,12 @@ void Clouds::render()
Clouds move from Z+ towards Z-
*/
const float cloud_size = BS * 64;
const v2f cloud_speed(0, -BS * 2);
static const float cloud_size = BS * 64.0f;
const float cloud_full_radius = cloud_size * m_cloud_radius_i;
// Position of cloud noise origin in world coordinates
v2f world_cloud_origin_pos_f = m_time * cloud_speed;
// Position of cloud noise origin from the camera
v2f cloud_origin_from_camera_f = world_cloud_origin_pos_f - m_camera_pos;
v2f cloud_origin_from_camera_f = m_origin - m_camera_pos;
// The center point of drawing in the noise
v2f center_of_drawing_in_noise_f = -cloud_origin_from_camera_f;
// The integer center point of drawing in the noise
@ -127,7 +134,7 @@ void Clouds::render()
v2f world_center_of_drawing_in_noise_f = v2f(
center_of_drawing_in_noise_i.X * cloud_size,
center_of_drawing_in_noise_i.Y * cloud_size
) + world_cloud_origin_pos_f;
) + m_origin;
/*video::SColor c_top(128,b*240,b*240,b*255);
video::SColor c_side_1(128,b*230,b*230,b*255);
@ -146,10 +153,6 @@ void Clouds::render()
c_bottom_f.r *= 0.80;
c_bottom_f.g *= 0.80;
c_bottom_f.b *= 0.80;
c_top_f.a = 0.9;
c_side_1_f.a = 0.9;
c_side_2_f.a = 0.9;
c_bottom_f.a = 0.9;
video::SColor c_top = c_top_f.toSColor();
video::SColor c_side_1 = c_side_1_f.toSColor();
video::SColor c_side_2 = c_side_2_f.toSColor();
@ -187,11 +190,14 @@ void Clouds::render()
zi + center_of_drawing_in_noise_i.Y
);
double noise = noise2d_perlin(
float noise = noise2d_perlin(
(float)p_in_noise_i.X * cloud_size_noise,
(float)p_in_noise_i.Y * cloud_size_noise,
m_seed, 3, 0.5);
grid[i] = (noise >= 0.4);
// normalize to 0..1 (given 3 octaves)
static const float noise_bound = 1.0f + 0.5f + 0.25f;
float density = noise / noise_bound * 0.5f + 0.5f;
grid[i] = (density < m_params.density);
}
}
@ -236,8 +242,9 @@ void Clouds::render()
v[3].Color.setBlue(255);
}*/
f32 rx = cloud_size/2;
f32 ry = 8 * BS;
f32 rx = cloud_size / 2.0f;
// if clouds are flat, the top layer should be at the given height
f32 ry = m_enable_3d ? m_params.thickness * BS : 0.0f;
f32 rz = cloud_size / 2;
for(int i=0; i<num_faces_to_draw; i++)
@ -265,8 +272,8 @@ void Clouds::render()
}
v[0].Pos.set(-rx, ry,-rz);
v[1].Pos.set( rx, ry,-rz);
v[2].Pos.set( rx,-ry,-rz);
v[3].Pos.set(-rx,-ry,-rz);
v[2].Pos.set( rx, 0,-rz);
v[3].Pos.set(-rx, 0,-rz);
break;
case 2: //right
if (INAREA(xi + 1, zi, m_cloud_radius_i)) {
@ -280,8 +287,8 @@ void Clouds::render()
}
v[0].Pos.set( rx, ry,-rz);
v[1].Pos.set( rx, ry, rz);
v[2].Pos.set( rx,-ry, rz);
v[3].Pos.set( rx,-ry,-rz);
v[2].Pos.set( rx, 0, rz);
v[3].Pos.set( rx, 0,-rz);
break;
case 3: // front
if (INAREA(xi, zi + 1, m_cloud_radius_i)) {
@ -295,8 +302,8 @@ void Clouds::render()
}
v[0].Pos.set( rx, ry, rz);
v[1].Pos.set(-rx, ry, rz);
v[2].Pos.set(-rx,-ry, rz);
v[3].Pos.set( rx,-ry, rz);
v[2].Pos.set(-rx, 0, rz);
v[3].Pos.set( rx, 0, rz);
break;
case 4: // left
if (INAREA(xi-1, zi, m_cloud_radius_i)) {
@ -310,22 +317,22 @@ void Clouds::render()
}
v[0].Pos.set(-rx, ry, rz);
v[1].Pos.set(-rx, ry,-rz);
v[2].Pos.set(-rx,-ry,-rz);
v[3].Pos.set(-rx,-ry, rz);
v[2].Pos.set(-rx, 0,-rz);
v[3].Pos.set(-rx, 0, rz);
break;
case 5: // bottom
for(int j=0;j<4;j++){
v[j].Color = c_bottom;
v[j].Normal.set(0,-1,0);
}
v[0].Pos.set( rx,-ry, rz);
v[1].Pos.set(-rx,-ry, rz);
v[2].Pos.set(-rx,-ry,-rz);
v[3].Pos.set( rx,-ry,-rz);
v[0].Pos.set( rx, 0, rz);
v[1].Pos.set(-rx, 0, rz);
v[2].Pos.set(-rx, 0,-rz);
v[3].Pos.set( rx, 0,-rz);
break;
}
v3f pos(p0.X, m_cloud_y, p0.Y);
v3f pos(p0.X, m_params.height * BS, p0.Y);
pos -= intToFloat(m_camera_offset, BS);
for(u16 i=0; i<4; i++)
@ -345,22 +352,25 @@ void Clouds::render()
void Clouds::step(float dtime)
{
m_time += dtime;
m_origin = m_origin + dtime * BS * m_params.speed;
}
void Clouds::update(v2f camera_p, video::SColorf color)
void Clouds::update(v2f camera_p, video::SColorf color_diffuse)
{
m_camera_pos = camera_p;
m_color = color;
//m_brightness = brightness;
//dstream<<"m_brightness="<<m_brightness<<std::endl;
m_color.r = MYMIN(MYMAX(color_diffuse.r * m_params.color_bright.getRed(),
m_params.color_ambient.getRed()), 255) / 255.0f;
m_color.g = MYMIN(MYMAX(color_diffuse.r * m_params.color_bright.getGreen(),
m_params.color_ambient.getGreen()), 255) / 255.0f;
m_color.b = MYMIN(MYMAX(color_diffuse.b * m_params.color_bright.getBlue(),
m_params.color_ambient.getBlue()), 255) / 255.0f;
m_color.a = m_params.color_bright.getAlpha() / 255.0f;
}
void Clouds::readSettings()
{
m_cloud_y = BS * (m_passed_cloud_y ? m_passed_cloud_y :
m_params.height = (m_passed_cloud_y ? m_passed_cloud_y :
g_settings->getS16("cloud_height"));
m_cloud_radius_i = g_settings->getU16("cloud_radius");
m_enable_3d = g_settings->getBool("enable_3d_clouds");
}