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 float cloud_size_noise = cloud_size / BS / 200;
167 for(s16 zi = -cloud_radius_i; zi < cloud_radius_i; zi++) {
168 u32 si = (zi + cloud_radius_i) * cloud_radius_i * 2 + cloud_radius_i;
170 for(s16 xi = -cloud_radius_i; xi < cloud_radius_i; xi++) {
174 xi + center_of_drawing_in_noise_i.X,
175 zi + center_of_drawing_in_noise_i.Y
178 double noise = noise2d_perlin(
179 (float)p_in_noise_i.X * cloud_size_noise,
180 (float)p_in_noise_i.Y * cloud_size_noise,
182 grid[i] = (noise >= 0.4);
186 #define GETINDEX(x, z, radius) (((z)+(radius))*(radius)*2 + (x)+(radius))
187 #define INAREA(x, z, radius) \
188 ((x) >= -(radius) && (x) < (radius) && (z) >= -(radius) && (z) < (radius))
190 for(s16 zi0=-cloud_radius_i; zi0<cloud_radius_i; zi0++)
191 for(s16 xi0=-cloud_radius_i; xi0<cloud_radius_i; xi0++)
195 // Draw from front to back (needed for transparency)
197 zi = -cloud_radius_i - zi;
199 xi = -cloud_radius_i - xi;*/
200 // Draw from back to front
202 zi = cloud_radius_i - zi - 1;
204 xi = cloud_radius_i - xi - 1;
206 u32 i = GETINDEX(xi, zi, cloud_radius_i);
211 v2f p0 = v2f(xi,zi)*cloud_size + world_center_of_drawing_in_noise_f;
213 video::S3DVertex v[4] = {
214 video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 1),
215 video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 1),
216 video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 0),
217 video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 0)
220 /*if(zi <= 0 && xi <= 0){
221 v[0].Color.setBlue(255);
222 v[1].Color.setBlue(255);
223 v[2].Color.setBlue(255);
224 v[3].Color.setBlue(255);
227 f32 rx = cloud_size/2;
229 f32 rz = cloud_size / 2;
231 for(int i=0; i<num_faces_to_draw; i++)
236 for(int j=0;j<4;j++){
237 v[j].Normal.set(0,1,0);
239 v[0].Pos.set(-rx, ry,-rz);
240 v[1].Pos.set(-rx, ry, rz);
241 v[2].Pos.set( rx, ry, rz);
242 v[3].Pos.set( rx, ry,-rz);
245 if(INAREA(xi, zi-1, cloud_radius_i)){
246 u32 j = GETINDEX(xi, zi-1, cloud_radius_i);
250 for(int j=0;j<4;j++){
251 v[j].Color = c_side_1;
252 v[j].Normal.set(0,0,-1);
254 v[0].Pos.set(-rx, ry,-rz);
255 v[1].Pos.set( rx, ry,-rz);
256 v[2].Pos.set( rx,-ry,-rz);
257 v[3].Pos.set(-rx,-ry,-rz);
260 if(INAREA(xi+1, zi, cloud_radius_i)){
261 u32 j = GETINDEX(xi+1, zi, cloud_radius_i);
265 for(int j=0;j<4;j++){
266 v[j].Color = c_side_2;
267 v[j].Normal.set(1,0,0);
269 v[0].Pos.set( rx, ry,-rz);
270 v[1].Pos.set( rx, ry, rz);
271 v[2].Pos.set( rx,-ry, rz);
272 v[3].Pos.set( rx,-ry,-rz);
275 if(INAREA(xi, zi+1, cloud_radius_i)){
276 u32 j = GETINDEX(xi, zi+1, cloud_radius_i);
280 for(int j=0;j<4;j++){
281 v[j].Color = c_side_1;
282 v[j].Normal.set(0,0,-1);
284 v[0].Pos.set( rx, ry, rz);
285 v[1].Pos.set(-rx, ry, rz);
286 v[2].Pos.set(-rx,-ry, rz);
287 v[3].Pos.set( rx,-ry, rz);
290 if(INAREA(xi-1, zi, cloud_radius_i)){
291 u32 j = GETINDEX(xi-1, zi, cloud_radius_i);
295 for(int j=0;j<4;j++){
296 v[j].Color = c_side_2;
297 v[j].Normal.set(-1,0,0);
299 v[0].Pos.set(-rx, ry, rz);
300 v[1].Pos.set(-rx, ry,-rz);
301 v[2].Pos.set(-rx,-ry,-rz);
302 v[3].Pos.set(-rx,-ry, rz);
305 for(int j=0;j<4;j++){
306 v[j].Color = c_bottom;
307 v[j].Normal.set(0,-1,0);
309 v[0].Pos.set( rx,-ry, rz);
310 v[1].Pos.set(-rx,-ry, rz);
311 v[2].Pos.set(-rx,-ry,-rz);
312 v[3].Pos.set( rx,-ry,-rz);
316 v3f pos(p0.X, m_cloud_y, p0.Y);
317 pos -= intToFloat(m_camera_offset, BS);
319 for(u16 i=0; i<4; i++)
321 u16 indices[] = {0,1,2,2,3,0};
322 driver->drawVertexPrimitiveList(v, 4, indices, 2,
323 video::EVT_STANDARD, scene::EPT_TRIANGLES, video::EIT_16BIT);
329 // Restore fog settings
330 driver->setFog(fog_color, fog_type, fog_start, fog_end, fog_density,
331 fog_pixelfog, fog_rangefog);
334 void Clouds::step(float dtime)
339 void Clouds::update(v2f camera_p, video::SColorf color)
341 m_camera_pos = camera_p;
343 //m_brightness = brightness;
344 //dstream<<"m_brightness="<<m_brightness<<std::endl;