3 Copyright (C) 2010-2011 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,
34 scene::ISceneNode(parent, mgr, id),
39 m_material.setFlag(video::EMF_LIGHTING, false);
40 //m_material.setFlag(video::EMF_BACK_FACE_CULLING, false);
41 m_material.setFlag(video::EMF_BACK_FACE_CULLING, true);
42 m_material.setFlag(video::EMF_BILINEAR_FILTER, false);
43 m_material.setFlag(video::EMF_FOG_ENABLE, true);
44 m_material.setFlag(video::EMF_ANTI_ALIASING, true);
45 //m_material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
46 m_material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
48 m_cloud_y = BS * g_settings->getS16("cloud_height");
50 m_box = core::aabbox3d<f32>(-BS*1000000,m_cloud_y-BS,-BS*1000000,
51 BS*1000000,m_cloud_y+BS,BS*1000000);
59 void Clouds::OnRegisterSceneNode()
63 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
64 //SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
67 ISceneNode::OnRegisterSceneNode();
70 #define MYROUND(x) (x > 0.0 ? (int)x : (int)x - 1)
74 video::IVideoDriver* driver = SceneManager->getVideoDriver();
76 if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_TRANSPARENT)
77 //if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_SOLID)
80 ScopeProfiler sp(g_profiler, "Rendering of clouds, avg", SPT_AVG);
82 bool enable_3d = g_settings->getBool("enable_3d_clouds");
83 int num_faces_to_draw = enable_3d ? 6 : 1;
85 m_material.setFlag(video::EMF_BACK_FACE_CULLING, enable_3d);
87 driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
88 driver->setMaterial(m_material);
91 Clouds move from X+ towards X-
94 const s16 cloud_radius_i = 12;
95 const float cloud_size = BS*64;
96 const v2f cloud_speed(0, -BS*2);
98 const float cloud_full_radius = cloud_size * cloud_radius_i;
100 // Position of cloud noise origin in world coordinates
101 v2f world_cloud_origin_pos_f = m_time*cloud_speed;
102 // Position of cloud noise origin from the camera
103 v2f cloud_origin_from_camera_f = world_cloud_origin_pos_f - m_camera_pos;
104 // The center point of drawing in the noise
105 v2f center_of_drawing_in_noise_f = -cloud_origin_from_camera_f;
106 // The integer center point of drawing in the noise
107 v2s16 center_of_drawing_in_noise_i(
108 MYROUND(center_of_drawing_in_noise_f.X / cloud_size),
109 MYROUND(center_of_drawing_in_noise_f.Y / cloud_size)
111 // The world position of the integer center point of drawing in the noise
112 v2f world_center_of_drawing_in_noise_f = v2f(
113 center_of_drawing_in_noise_i.X * cloud_size,
114 center_of_drawing_in_noise_i.Y * cloud_size
115 ) + world_cloud_origin_pos_f;
117 /*video::SColor c_top(128,b*240,b*240,b*255);
118 video::SColor c_side_1(128,b*230,b*230,b*255);
119 video::SColor c_side_2(128,b*220,b*220,b*245);
120 video::SColor c_bottom(128,b*205,b*205,b*230);*/
121 video::SColorf c_top_f(m_color);
122 video::SColorf c_side_1_f(m_color);
123 video::SColorf c_side_2_f(m_color);
124 video::SColorf c_bottom_f(m_color);
125 c_side_1_f.r *= 0.95;
126 c_side_1_f.g *= 0.95;
127 c_side_1_f.b *= 0.95;
128 c_side_2_f.r *= 0.90;
129 c_side_2_f.g *= 0.90;
130 c_side_2_f.b *= 0.90;
131 c_bottom_f.r *= 0.80;
132 c_bottom_f.g *= 0.80;
133 c_bottom_f.b *= 0.80;
138 video::SColor c_top = c_top_f.toSColor();
139 video::SColor c_side_1 = c_side_1_f.toSColor();
140 video::SColor c_side_2 = c_side_2_f.toSColor();
141 video::SColor c_bottom = c_bottom_f.toSColor();
143 // Get fog parameters for setting them back later
144 video::SColor fog_color(0,0,0,0);
145 video::E_FOG_TYPE fog_type = video::EFT_FOG_LINEAR;
149 bool fog_pixelfog = false;
150 bool fog_rangefog = false;
151 driver->getFog(fog_color, fog_type, fog_start, fog_end, fog_density,
152 fog_pixelfog, fog_rangefog);
155 driver->setFog(fog_color, fog_type, cloud_full_radius * 0.5,
156 cloud_full_radius*1.2, fog_density, fog_pixelfog, fog_rangefog);
160 bool *grid = new bool[cloud_radius_i*2*cloud_radius_i*2];
162 for(s16 zi=-cloud_radius_i; zi<cloud_radius_i; zi++)
163 for(s16 xi=-cloud_radius_i; xi<cloud_radius_i; xi++)
165 u32 i = (zi+cloud_radius_i)*cloud_radius_i*2 + xi+cloud_radius_i;
168 xi+center_of_drawing_in_noise_i.X,
169 zi+center_of_drawing_in_noise_i.Y
173 double noise = noise2d_perlin_abs(
174 (float)p_in_noise_i.X*cloud_size/BS/200,
175 (float)p_in_noise_i.Y*cloud_size/BS/200,
177 grid[i] = (noise >= 0.80);
180 double noise = noise2d_perlin(
181 (float)p_in_noise_i.X*cloud_size/BS/200,
182 (float)p_in_noise_i.Y*cloud_size/BS/200,
184 grid[i] = (noise >= 0.4);
188 #define GETINDEX(x, z, radius) (((z)+(radius))*(radius)*2 + (x)+(radius))
189 #define CONTAINS(x, z, radius) \
190 ((x) >= -(radius) && (x) < (radius) && (z) >= -(radius) && (z) < (radius))
192 for(s16 zi0=-cloud_radius_i; zi0<cloud_radius_i; zi0++)
193 for(s16 xi0=-cloud_radius_i; xi0<cloud_radius_i; xi0++)
197 // Draw from front to back (needed for transparency)
199 zi = -cloud_radius_i - zi;
201 xi = -cloud_radius_i - xi;*/
202 // Draw from back to front
204 zi = cloud_radius_i - zi - 1;
206 xi = cloud_radius_i - xi - 1;
208 u32 i = GETINDEX(xi, zi, cloud_radius_i);
213 v2f p0 = v2f(xi,zi)*cloud_size + world_center_of_drawing_in_noise_f;
215 video::S3DVertex v[4] = {
216 video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 1),
217 video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 1),
218 video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 0),
219 video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 0)
222 /*if(zi <= 0 && xi <= 0){
223 v[0].Color.setBlue(255);
224 v[1].Color.setBlue(255);
225 v[2].Color.setBlue(255);
226 v[3].Color.setBlue(255);
229 f32 rx = cloud_size/2;
231 f32 rz = cloud_size/2;
233 for(int i=0; i<num_faces_to_draw; i++)
238 for(int j=0;j<4;j++){
239 v[j].Normal.set(0,1,0);
241 v[0].Pos.set(-rx, ry,-rz);
242 v[1].Pos.set(-rx, ry, rz);
243 v[2].Pos.set( rx, ry, rz);
244 v[3].Pos.set( rx, ry,-rz);
247 if(CONTAINS(xi, zi-1, cloud_radius_i)){
248 u32 j = GETINDEX(xi, zi-1, cloud_radius_i);
252 for(int j=0;j<4;j++){
253 v[j].Color = c_side_1;
254 v[j].Normal.set(0,0,-1);
256 v[0].Pos.set(-rx, ry,-rz);
257 v[1].Pos.set( rx, ry,-rz);
258 v[2].Pos.set( rx,-ry,-rz);
259 v[3].Pos.set(-rx,-ry,-rz);
262 if(CONTAINS(xi+1, zi, cloud_radius_i)){
263 u32 j = GETINDEX(xi+1, zi, cloud_radius_i);
267 for(int j=0;j<4;j++){
268 v[j].Color = c_side_2;
269 v[j].Normal.set(1,0,0);
271 v[0].Pos.set( rx, ry,-rz);
272 v[1].Pos.set( rx, ry, rz);
273 v[2].Pos.set( rx,-ry, rz);
274 v[3].Pos.set( rx,-ry,-rz);
277 if(CONTAINS(xi, zi+1, cloud_radius_i)){
278 u32 j = GETINDEX(xi, zi+1, cloud_radius_i);
282 for(int j=0;j<4;j++){
283 v[j].Color = c_side_1;
284 v[j].Normal.set(0,0,-1);
286 v[0].Pos.set( rx, ry, rz);
287 v[1].Pos.set(-rx, ry, rz);
288 v[2].Pos.set(-rx,-ry, rz);
289 v[3].Pos.set( rx,-ry, rz);
292 if(CONTAINS(xi-1, zi, cloud_radius_i)){
293 u32 j = GETINDEX(xi-1, zi, cloud_radius_i);
297 for(int j=0;j<4;j++){
298 v[j].Color = c_side_2;
299 v[j].Normal.set(-1,0,0);
301 v[0].Pos.set(-rx, ry, rz);
302 v[1].Pos.set(-rx, ry,-rz);
303 v[2].Pos.set(-rx,-ry,-rz);
304 v[3].Pos.set(-rx,-ry, rz);
307 for(int j=0;j<4;j++){
308 v[j].Color = c_bottom;
309 v[j].Normal.set(0,-1,0);
311 v[0].Pos.set( rx,-ry, rz);
312 v[1].Pos.set(-rx,-ry, rz);
313 v[2].Pos.set(-rx,-ry,-rz);
314 v[3].Pos.set( rx,-ry,-rz);
318 v3f pos(p0.X, m_cloud_y, p0.Y);
320 for(u16 i=0; i<4; i++)
322 u16 indices[] = {0,1,2,2,3,0};
323 driver->drawVertexPrimitiveList(v, 4, indices, 2,
324 video::EVT_STANDARD, scene::EPT_TRIANGLES, video::EIT_16BIT);
330 // Restore fog settings
331 driver->setFog(fog_color, fog_type, fog_start, fog_end, fog_density,
332 fog_pixelfog, fog_rangefog);
335 void Clouds::step(float dtime)
340 void Clouds::update(v2f camera_p, video::SColorf color)
342 m_camera_pos = camera_p;
344 //m_brightness = brightness;
345 //dstream<<"m_brightness="<<m_brightness<<std::endl;