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.
22 #include "constants.h"
24 #include "main.h" // For g_profiler and g_settings
29 scene::ISceneNode* parent,
30 scene::ISceneManager* mgr,
35 scene::ISceneNode(parent, mgr, id),
39 m_camera_offset(0,0,0)
41 m_material.setFlag(video::EMF_LIGHTING, false);
42 //m_material.setFlag(video::EMF_BACK_FACE_CULLING, false);
43 m_material.setFlag(video::EMF_BACK_FACE_CULLING, true);
44 m_material.setFlag(video::EMF_BILINEAR_FILTER, false);
45 m_material.setFlag(video::EMF_FOG_ENABLE, true);
46 m_material.setFlag(video::EMF_ANTI_ALIASING, true);
47 //m_material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
48 m_material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
50 m_cloud_y = BS * (cloudheight ? cloudheight :
51 g_settings->getS16("cloud_height"));
53 m_box = core::aabbox3d<f32>(-BS*1000000,m_cloud_y-BS,-BS*1000000,
54 BS*1000000,m_cloud_y+BS,BS*1000000);
62 void Clouds::OnRegisterSceneNode()
66 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
67 //SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
70 ISceneNode::OnRegisterSceneNode();
73 #define MYROUND(x) (x > 0.0 ? (int)x : (int)x - 1)
77 video::IVideoDriver* driver = SceneManager->getVideoDriver();
79 if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_TRANSPARENT)
80 //if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_SOLID)
83 ScopeProfiler sp(g_profiler, "Rendering of clouds, avg", SPT_AVG);
85 bool enable_3d = g_settings->getBool("enable_3d_clouds");
86 int num_faces_to_draw = enable_3d ? 6 : 1;
88 m_material.setFlag(video::EMF_BACK_FACE_CULLING, enable_3d);
90 driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
91 driver->setMaterial(m_material);
94 Clouds move from X+ towards X-
97 const s16 cloud_radius_i = 12;
98 const float cloud_size = BS*64;
99 const v2f cloud_speed(0, -BS*2);
101 const float cloud_full_radius = cloud_size * cloud_radius_i;
103 // Position of cloud noise origin in world coordinates
104 v2f world_cloud_origin_pos_f = m_time*cloud_speed;
105 // Position of cloud noise origin from the camera
106 v2f cloud_origin_from_camera_f = world_cloud_origin_pos_f - m_camera_pos;
107 // The center point of drawing in the noise
108 v2f center_of_drawing_in_noise_f = -cloud_origin_from_camera_f;
109 // The integer center point of drawing in the noise
110 v2s16 center_of_drawing_in_noise_i(
111 MYROUND(center_of_drawing_in_noise_f.X / cloud_size),
112 MYROUND(center_of_drawing_in_noise_f.Y / cloud_size)
114 // The world position of the integer center point of drawing in the noise
115 v2f world_center_of_drawing_in_noise_f = v2f(
116 center_of_drawing_in_noise_i.X * cloud_size,
117 center_of_drawing_in_noise_i.Y * cloud_size
118 ) + world_cloud_origin_pos_f;
120 /*video::SColor c_top(128,b*240,b*240,b*255);
121 video::SColor c_side_1(128,b*230,b*230,b*255);
122 video::SColor c_side_2(128,b*220,b*220,b*245);
123 video::SColor c_bottom(128,b*205,b*205,b*230);*/
124 video::SColorf c_top_f(m_color);
125 video::SColorf c_side_1_f(m_color);
126 video::SColorf c_side_2_f(m_color);
127 video::SColorf c_bottom_f(m_color);
128 c_side_1_f.r *= 0.95;
129 c_side_1_f.g *= 0.95;
130 c_side_1_f.b *= 0.95;
131 c_side_2_f.r *= 0.90;
132 c_side_2_f.g *= 0.90;
133 c_side_2_f.b *= 0.90;
134 c_bottom_f.r *= 0.80;
135 c_bottom_f.g *= 0.80;
136 c_bottom_f.b *= 0.80;
141 video::SColor c_top = c_top_f.toSColor();
142 video::SColor c_side_1 = c_side_1_f.toSColor();
143 video::SColor c_side_2 = c_side_2_f.toSColor();
144 video::SColor c_bottom = c_bottom_f.toSColor();
146 // Get fog parameters for setting them back later
147 video::SColor fog_color(0,0,0,0);
148 video::E_FOG_TYPE fog_type = video::EFT_FOG_LINEAR;
152 bool fog_pixelfog = false;
153 bool fog_rangefog = false;
154 driver->getFog(fog_color, fog_type, fog_start, fog_end, fog_density,
155 fog_pixelfog, fog_rangefog);
158 driver->setFog(fog_color, fog_type, cloud_full_radius * 0.5,
159 cloud_full_radius*1.2, fog_density, fog_pixelfog, fog_rangefog);
163 bool *grid = new bool[cloud_radius_i*2*cloud_radius_i*2];
165 for(s16 zi=-cloud_radius_i; zi<cloud_radius_i; zi++)
166 for(s16 xi=-cloud_radius_i; xi<cloud_radius_i; xi++)
168 u32 i = (zi+cloud_radius_i)*cloud_radius_i*2 + xi+cloud_radius_i;
171 xi+center_of_drawing_in_noise_i.X,
172 zi+center_of_drawing_in_noise_i.Y
176 double noise = noise2d_perlin_abs(
177 (float)p_in_noise_i.X*cloud_size/BS/200,
178 (float)p_in_noise_i.Y*cloud_size/BS/200,
180 grid[i] = (noise >= 0.80);
183 double noise = noise2d_perlin(
184 (float)p_in_noise_i.X*cloud_size/BS/200,
185 (float)p_in_noise_i.Y*cloud_size/BS/200,
187 grid[i] = (noise >= 0.4);
191 #define GETINDEX(x, z, radius) (((z)+(radius))*(radius)*2 + (x)+(radius))
192 #define CONTAINS(x, z, radius) \
193 ((x) >= -(radius) && (x) < (radius) && (z) >= -(radius) && (z) < (radius))
195 for(s16 zi0=-cloud_radius_i; zi0<cloud_radius_i; zi0++)
196 for(s16 xi0=-cloud_radius_i; xi0<cloud_radius_i; xi0++)
200 // Draw from front to back (needed for transparency)
202 zi = -cloud_radius_i - zi;
204 xi = -cloud_radius_i - xi;*/
205 // Draw from back to front
207 zi = cloud_radius_i - zi - 1;
209 xi = cloud_radius_i - xi - 1;
211 u32 i = GETINDEX(xi, zi, cloud_radius_i);
216 v2f p0 = v2f(xi,zi)*cloud_size + world_center_of_drawing_in_noise_f;
218 video::S3DVertex v[4] = {
219 video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 1),
220 video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 1),
221 video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 0),
222 video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 0)
225 /*if(zi <= 0 && xi <= 0){
226 v[0].Color.setBlue(255);
227 v[1].Color.setBlue(255);
228 v[2].Color.setBlue(255);
229 v[3].Color.setBlue(255);
232 f32 rx = cloud_size/2;
234 f32 rz = cloud_size/2;
236 for(int i=0; i<num_faces_to_draw; i++)
241 for(int j=0;j<4;j++){
242 v[j].Normal.set(0,1,0);
244 v[0].Pos.set(-rx, ry,-rz);
245 v[1].Pos.set(-rx, ry, rz);
246 v[2].Pos.set( rx, ry, rz);
247 v[3].Pos.set( rx, ry,-rz);
250 if(CONTAINS(xi, zi-1, cloud_radius_i)){
251 u32 j = GETINDEX(xi, zi-1, cloud_radius_i);
255 for(int j=0;j<4;j++){
256 v[j].Color = c_side_1;
257 v[j].Normal.set(0,0,-1);
259 v[0].Pos.set(-rx, ry,-rz);
260 v[1].Pos.set( rx, ry,-rz);
261 v[2].Pos.set( rx,-ry,-rz);
262 v[3].Pos.set(-rx,-ry,-rz);
265 if(CONTAINS(xi+1, zi, cloud_radius_i)){
266 u32 j = GETINDEX(xi+1, zi, cloud_radius_i);
270 for(int j=0;j<4;j++){
271 v[j].Color = c_side_2;
272 v[j].Normal.set(1,0,0);
274 v[0].Pos.set( rx, ry,-rz);
275 v[1].Pos.set( rx, ry, rz);
276 v[2].Pos.set( rx,-ry, rz);
277 v[3].Pos.set( rx,-ry,-rz);
280 if(CONTAINS(xi, zi+1, cloud_radius_i)){
281 u32 j = GETINDEX(xi, zi+1, cloud_radius_i);
285 for(int j=0;j<4;j++){
286 v[j].Color = c_side_1;
287 v[j].Normal.set(0,0,-1);
289 v[0].Pos.set( rx, ry, rz);
290 v[1].Pos.set(-rx, ry, rz);
291 v[2].Pos.set(-rx,-ry, rz);
292 v[3].Pos.set( rx,-ry, rz);
295 if(CONTAINS(xi-1, zi, cloud_radius_i)){
296 u32 j = GETINDEX(xi-1, zi, cloud_radius_i);
300 for(int j=0;j<4;j++){
301 v[j].Color = c_side_2;
302 v[j].Normal.set(-1,0,0);
304 v[0].Pos.set(-rx, ry, rz);
305 v[1].Pos.set(-rx, ry,-rz);
306 v[2].Pos.set(-rx,-ry,-rz);
307 v[3].Pos.set(-rx,-ry, rz);
310 for(int j=0;j<4;j++){
311 v[j].Color = c_bottom;
312 v[j].Normal.set(0,-1,0);
314 v[0].Pos.set( rx,-ry, rz);
315 v[1].Pos.set(-rx,-ry, rz);
316 v[2].Pos.set(-rx,-ry,-rz);
317 v[3].Pos.set( rx,-ry,-rz);
321 v3f pos(p0.X, m_cloud_y, p0.Y);
322 pos -= intToFloat(m_camera_offset, BS);
324 for(u16 i=0; i<4; i++)
326 u16 indices[] = {0,1,2,2,3,0};
327 driver->drawVertexPrimitiveList(v, 4, indices, 2,
328 video::EVT_STANDARD, scene::EPT_TRIANGLES, video::EIT_16BIT);
334 // Restore fog settings
335 driver->setFog(fog_color, fog_type, fog_start, fog_end, fog_density,
336 fog_pixelfog, fog_rangefog);
339 void Clouds::step(float dtime)
344 void Clouds::update(v2f camera_p, video::SColorf color)
346 m_camera_pos = camera_p;
348 //m_brightness = brightness;
349 //dstream<<"m_brightness="<<m_brightness<<std::endl;