3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #include "client/renderingengine.h"
23 #include "constants.h"
30 // Menu clouds are created later
32 Clouds *g_menuclouds = NULL;
33 irr::scene::ISceneManager *g_menucloudsmgr = NULL;
36 static constexpr const float cloud_size = BS * 64.0f;
38 static void cloud_3d_setting_changed(const std::string &settingname, void *data)
40 ((Clouds *)data)->readSettings();
43 Clouds::Clouds(scene::ISceneManager* mgr,
47 scene::ISceneNode(mgr->getRootSceneNode(), mgr, id),
50 m_material.setFlag(video::EMF_LIGHTING, false);
51 //m_material.setFlag(video::EMF_BACK_FACE_CULLING, false);
52 m_material.setFlag(video::EMF_BACK_FACE_CULLING, true);
53 m_material.setFlag(video::EMF_BILINEAR_FILTER, false);
54 m_material.setFlag(video::EMF_FOG_ENABLE, true);
55 m_material.setFlag(video::EMF_ANTI_ALIASING, true);
56 //m_material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
57 m_material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
59 m_params.height = 120;
60 m_params.density = 0.4f;
61 m_params.thickness = 16.0f;
62 m_params.color_bright = video::SColor(229, 240, 240, 255);
63 m_params.color_ambient = video::SColor(255, 0, 0, 0);
64 m_params.speed = v2f(0.0f, -2.0f);
67 g_settings->registerChangedCallback("enable_3d_clouds",
68 &cloud_3d_setting_changed, this);
75 g_settings->deregisterChangedCallback("enable_3d_clouds",
76 &cloud_3d_setting_changed, this);
79 void Clouds::OnRegisterSceneNode()
83 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
84 //SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
87 ISceneNode::OnRegisterSceneNode();
93 if (m_params.density <= 0.0f)
94 return; // no need to do anything
96 video::IVideoDriver* driver = SceneManager->getVideoDriver();
98 if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_TRANSPARENT)
99 //if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_SOLID)
102 ScopeProfiler sp(g_profiler, "Rendering of clouds, avg", SPT_AVG);
104 int num_faces_to_draw = m_enable_3d ? 6 : 1;
106 m_material.setFlag(video::EMF_BACK_FACE_CULLING, m_enable_3d);
108 driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
109 driver->setMaterial(m_material);
112 Clouds move from Z+ towards Z-
115 const float cloud_full_radius = cloud_size * m_cloud_radius_i;
117 v2f camera_pos_2d(m_camera_pos.X, m_camera_pos.Z);
118 // Position of cloud noise origin from the camera
119 v2f cloud_origin_from_camera_f = m_origin - camera_pos_2d;
120 // The center point of drawing in the noise
121 v2f center_of_drawing_in_noise_f = -cloud_origin_from_camera_f;
122 // The integer center point of drawing in the noise
123 v2s16 center_of_drawing_in_noise_i(
124 std::floor(center_of_drawing_in_noise_f.X / cloud_size),
125 std::floor(center_of_drawing_in_noise_f.Y / cloud_size)
128 // The world position of the integer center point of drawing in the noise
129 v2f world_center_of_drawing_in_noise_f = v2f(
130 center_of_drawing_in_noise_i.X * cloud_size,
131 center_of_drawing_in_noise_i.Y * cloud_size
134 /*video::SColor c_top(128,b*240,b*240,b*255);
135 video::SColor c_side_1(128,b*230,b*230,b*255);
136 video::SColor c_side_2(128,b*220,b*220,b*245);
137 video::SColor c_bottom(128,b*205,b*205,b*230);*/
138 video::SColorf c_top_f(m_color);
139 video::SColorf c_side_1_f(m_color);
140 video::SColorf c_side_2_f(m_color);
141 video::SColorf c_bottom_f(m_color);
142 c_side_1_f.r *= 0.95;
143 c_side_1_f.g *= 0.95;
144 c_side_1_f.b *= 0.95;
145 c_side_2_f.r *= 0.90;
146 c_side_2_f.g *= 0.90;
147 c_side_2_f.b *= 0.90;
148 c_bottom_f.r *= 0.80;
149 c_bottom_f.g *= 0.80;
150 c_bottom_f.b *= 0.80;
151 video::SColor c_top = c_top_f.toSColor();
152 video::SColor c_side_1 = c_side_1_f.toSColor();
153 video::SColor c_side_2 = c_side_2_f.toSColor();
154 video::SColor c_bottom = c_bottom_f.toSColor();
156 // Get fog parameters for setting them back later
157 video::SColor fog_color(0,0,0,0);
158 video::E_FOG_TYPE fog_type = video::EFT_FOG_LINEAR;
162 bool fog_pixelfog = false;
163 bool fog_rangefog = false;
164 driver->getFog(fog_color, fog_type, fog_start, fog_end, fog_density,
165 fog_pixelfog, fog_rangefog);
168 driver->setFog(fog_color, fog_type, cloud_full_radius * 0.5,
169 cloud_full_radius*1.2, fog_density, fog_pixelfog, fog_rangefog);
173 bool *grid = new bool[m_cloud_radius_i * 2 * m_cloud_radius_i * 2];
176 for(s16 zi = -m_cloud_radius_i; zi < m_cloud_radius_i; zi++) {
177 u32 si = (zi + m_cloud_radius_i) * m_cloud_radius_i * 2 + m_cloud_radius_i;
179 for (s16 xi = -m_cloud_radius_i; xi < m_cloud_radius_i; xi++) {
182 grid[i] = gridFilled(
183 xi + center_of_drawing_in_noise_i.X,
184 zi + center_of_drawing_in_noise_i.Y
189 #define GETINDEX(x, z, radius) (((z)+(radius))*(radius)*2 + (x)+(radius))
190 #define INAREA(x, z, radius) \
191 ((x) >= -(radius) && (x) < (radius) && (z) >= -(radius) && (z) < (radius))
193 for (s16 zi0= -m_cloud_radius_i; zi0 < m_cloud_radius_i; zi0++)
194 for (s16 xi0= -m_cloud_radius_i; xi0 < m_cloud_radius_i; xi0++)
198 // Draw from front to back (needed for transparency)
200 zi = -m_cloud_radius_i - zi;
202 xi = -m_cloud_radius_i - xi;*/
203 // Draw from back to front
205 zi = m_cloud_radius_i - zi - 1;
207 xi = m_cloud_radius_i - xi - 1;
209 u32 i = GETINDEX(xi, zi, m_cloud_radius_i);
214 v2f p0 = v2f(xi,zi)*cloud_size + world_center_of_drawing_in_noise_f;
216 video::S3DVertex v[4] = {
217 video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 1),
218 video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 1),
219 video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 0),
220 video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 0)
223 /*if(zi <= 0 && xi <= 0){
224 v[0].Color.setBlue(255);
225 v[1].Color.setBlue(255);
226 v[2].Color.setBlue(255);
227 v[3].Color.setBlue(255);
230 f32 rx = cloud_size / 2.0f;
231 // if clouds are flat, the top layer should be at the given height
232 f32 ry = m_enable_3d ? m_params.thickness * BS : 0.0f;
233 f32 rz = cloud_size / 2;
235 for(int i=0; i<num_faces_to_draw; i++)
240 for (video::S3DVertex &vertex : v) {
241 vertex.Normal.set(0,1,0);
243 v[0].Pos.set(-rx, ry,-rz);
244 v[1].Pos.set(-rx, ry, rz);
245 v[2].Pos.set( rx, ry, rz);
246 v[3].Pos.set( rx, ry,-rz);
249 if (INAREA(xi, zi - 1, m_cloud_radius_i)) {
250 u32 j = GETINDEX(xi, zi - 1, m_cloud_radius_i);
254 for (video::S3DVertex &vertex : v) {
255 vertex.Color = c_side_1;
256 vertex.Normal.set(0,0,-1);
258 v[0].Pos.set(-rx, ry,-rz);
259 v[1].Pos.set( rx, ry,-rz);
260 v[2].Pos.set( rx, 0,-rz);
261 v[3].Pos.set(-rx, 0,-rz);
264 if (INAREA(xi + 1, zi, m_cloud_radius_i)) {
265 u32 j = GETINDEX(xi+1, zi, m_cloud_radius_i);
269 for (video::S3DVertex &vertex : v) {
270 vertex.Color = c_side_2;
271 vertex.Normal.set(1,0,0);
273 v[0].Pos.set( rx, ry,-rz);
274 v[1].Pos.set( rx, ry, rz);
275 v[2].Pos.set( rx, 0, rz);
276 v[3].Pos.set( rx, 0,-rz);
279 if (INAREA(xi, zi + 1, m_cloud_radius_i)) {
280 u32 j = GETINDEX(xi, zi + 1, m_cloud_radius_i);
284 for (video::S3DVertex &vertex : v) {
285 vertex.Color = c_side_1;
286 vertex.Normal.set(0,0,-1);
288 v[0].Pos.set( rx, ry, rz);
289 v[1].Pos.set(-rx, ry, rz);
290 v[2].Pos.set(-rx, 0, rz);
291 v[3].Pos.set( rx, 0, rz);
294 if (INAREA(xi-1, zi, m_cloud_radius_i)) {
295 u32 j = GETINDEX(xi-1, zi, m_cloud_radius_i);
299 for (video::S3DVertex &vertex : v) {
300 vertex.Color = c_side_2;
301 vertex.Normal.set(-1,0,0);
303 v[0].Pos.set(-rx, ry, rz);
304 v[1].Pos.set(-rx, ry,-rz);
305 v[2].Pos.set(-rx, 0,-rz);
306 v[3].Pos.set(-rx, 0, rz);
309 for (video::S3DVertex &vertex : v) {
310 vertex.Color = c_bottom;
311 vertex.Normal.set(0,-1,0);
313 v[0].Pos.set( rx, 0, rz);
314 v[1].Pos.set(-rx, 0, rz);
315 v[2].Pos.set(-rx, 0,-rz);
316 v[3].Pos.set( rx, 0,-rz);
320 v3f pos(p0.X, m_params.height * BS, p0.Y);
321 pos -= intToFloat(m_camera_offset, BS);
323 for (video::S3DVertex &vertex : v)
325 u16 indices[] = {0,1,2,2,3,0};
326 driver->drawVertexPrimitiveList(v, 4, indices, 2,
327 video::EVT_STANDARD, scene::EPT_TRIANGLES, video::EIT_16BIT);
333 // Restore fog settings
334 driver->setFog(fog_color, fog_type, fog_start, fog_end, fog_density,
335 fog_pixelfog, fog_rangefog);
338 void Clouds::step(float dtime)
340 m_origin = m_origin + dtime * BS * m_params.speed;
343 void Clouds::update(const v3f &camera_p, const video::SColorf &color_diffuse)
345 m_camera_pos = camera_p;
346 m_color.r = MYMIN(MYMAX(color_diffuse.r * m_params.color_bright.getRed(),
347 m_params.color_ambient.getRed()), 255) / 255.0f;
348 m_color.g = MYMIN(MYMAX(color_diffuse.g * m_params.color_bright.getGreen(),
349 m_params.color_ambient.getGreen()), 255) / 255.0f;
350 m_color.b = MYMIN(MYMAX(color_diffuse.b * m_params.color_bright.getBlue(),
351 m_params.color_ambient.getBlue()), 255) / 255.0f;
352 m_color.a = m_params.color_bright.getAlpha() / 255.0f;
354 // is the camera inside the cloud mesh?
355 m_camera_inside_cloud = false; // default
357 float camera_height = camera_p.Y;
358 if (camera_height >= m_box.MinEdge.Y &&
359 camera_height <= m_box.MaxEdge.Y) {
361 camera_in_noise.X = floor((camera_p.X - m_origin.X) / cloud_size + 0.5);
362 camera_in_noise.Y = floor((camera_p.Z - m_origin.Y) / cloud_size + 0.5);
363 bool filled = gridFilled(camera_in_noise.X, camera_in_noise.Y);
364 m_camera_inside_cloud = filled;
369 void Clouds::readSettings()
371 m_cloud_radius_i = g_settings->getU16("cloud_radius");
372 m_enable_3d = g_settings->getBool("enable_3d_clouds");
375 bool Clouds::gridFilled(int x, int y) const
377 float cloud_size_noise = cloud_size / (BS * 200.f);
378 float noise = noise2d_perlin(
379 (float)x * cloud_size_noise,
380 (float)y * cloud_size_noise,
382 // normalize to 0..1 (given 3 octaves)
383 static constexpr const float noise_bound = 1.0f + 0.5f + 0.25f;
384 float density = noise / noise_bound * 0.5f + 0.5f;
385 return (density < m_params.density);