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"
28 // Menu clouds are created later
30 Clouds *g_menuclouds = NULL;
31 irr::scene::ISceneManager *g_menucloudsmgr = NULL;
34 scene::ISceneNode* parent,
35 scene::ISceneManager* mgr,
40 scene::ISceneNode(parent, mgr, id),
44 m_camera_offset(0,0,0)
46 m_material.setFlag(video::EMF_LIGHTING, false);
47 //m_material.setFlag(video::EMF_BACK_FACE_CULLING, false);
48 m_material.setFlag(video::EMF_BACK_FACE_CULLING, true);
49 m_material.setFlag(video::EMF_BILINEAR_FILTER, false);
50 m_material.setFlag(video::EMF_FOG_ENABLE, true);
51 m_material.setFlag(video::EMF_ANTI_ALIASING, true);
52 //m_material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
53 m_material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
55 m_cloud_y = BS * (cloudheight ? cloudheight :
56 g_settings->getS16("cloud_height"));
58 m_box = core::aabbox3d<f32>(-BS*1000000,m_cloud_y-BS,-BS*1000000,
59 BS*1000000,m_cloud_y+BS,BS*1000000);
67 void Clouds::OnRegisterSceneNode()
71 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
72 //SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
75 ISceneNode::OnRegisterSceneNode();
78 #define MYROUND(x) (x > 0.0 ? (int)x : (int)x - 1)
82 video::IVideoDriver* driver = SceneManager->getVideoDriver();
84 if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_TRANSPARENT)
85 //if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_SOLID)
88 ScopeProfiler sp(g_profiler, "Rendering of clouds, avg", SPT_AVG);
90 bool enable_3d = g_settings->getBool("enable_3d_clouds");
91 int num_faces_to_draw = enable_3d ? 6 : 1;
93 m_material.setFlag(video::EMF_BACK_FACE_CULLING, enable_3d);
95 driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
96 driver->setMaterial(m_material);
99 Clouds move from X+ towards X-
102 const s16 cloud_radius_i = 12;
103 const float cloud_size = BS * 64;
104 const v2f cloud_speed(0, -BS * 2);
106 const float cloud_full_radius = cloud_size * cloud_radius_i;
108 // Position of cloud noise origin in world coordinates
109 v2f world_cloud_origin_pos_f = m_time * cloud_speed;
110 // Position of cloud noise origin from the camera
111 v2f cloud_origin_from_camera_f = world_cloud_origin_pos_f - m_camera_pos;
112 // The center point of drawing in the noise
113 v2f center_of_drawing_in_noise_f = -cloud_origin_from_camera_f;
114 // The integer center point of drawing in the noise
115 v2s16 center_of_drawing_in_noise_i(
116 MYROUND(center_of_drawing_in_noise_f.X / cloud_size),
117 MYROUND(center_of_drawing_in_noise_f.Y / cloud_size)
119 // The world position of the integer center point of drawing in the noise
120 v2f world_center_of_drawing_in_noise_f = v2f(
121 center_of_drawing_in_noise_i.X * cloud_size,
122 center_of_drawing_in_noise_i.Y * cloud_size
123 ) + world_cloud_origin_pos_f;
125 /*video::SColor c_top(128,b*240,b*240,b*255);
126 video::SColor c_side_1(128,b*230,b*230,b*255);
127 video::SColor c_side_2(128,b*220,b*220,b*245);
128 video::SColor c_bottom(128,b*205,b*205,b*230);*/
129 video::SColorf c_top_f(m_color);
130 video::SColorf c_side_1_f(m_color);
131 video::SColorf c_side_2_f(m_color);
132 video::SColorf c_bottom_f(m_color);
133 c_side_1_f.r *= 0.95;
134 c_side_1_f.g *= 0.95;
135 c_side_1_f.b *= 0.95;
136 c_side_2_f.r *= 0.90;
137 c_side_2_f.g *= 0.90;
138 c_side_2_f.b *= 0.90;
139 c_bottom_f.r *= 0.80;
140 c_bottom_f.g *= 0.80;
141 c_bottom_f.b *= 0.80;
146 video::SColor c_top = c_top_f.toSColor();
147 video::SColor c_side_1 = c_side_1_f.toSColor();
148 video::SColor c_side_2 = c_side_2_f.toSColor();
149 video::SColor c_bottom = c_bottom_f.toSColor();
151 // Get fog parameters for setting them back later
152 video::SColor fog_color(0,0,0,0);
153 video::E_FOG_TYPE fog_type = video::EFT_FOG_LINEAR;
157 bool fog_pixelfog = false;
158 bool fog_rangefog = false;
159 driver->getFog(fog_color, fog_type, fog_start, fog_end, fog_density,
160 fog_pixelfog, fog_rangefog);
163 driver->setFog(fog_color, fog_type, cloud_full_radius * 0.5,
164 cloud_full_radius*1.2, fog_density, fog_pixelfog, fog_rangefog);
168 bool *grid = new bool[cloud_radius_i * 2 * cloud_radius_i * 2];
170 float cloud_size_noise = cloud_size / BS / 200;
172 for(s16 zi = -cloud_radius_i; zi < cloud_radius_i; zi++) {
173 u32 si = (zi + cloud_radius_i) * cloud_radius_i * 2 + cloud_radius_i;
175 for(s16 xi = -cloud_radius_i; xi < cloud_radius_i; xi++) {
179 xi + center_of_drawing_in_noise_i.X,
180 zi + center_of_drawing_in_noise_i.Y
183 double noise = noise2d_perlin(
184 (float)p_in_noise_i.X * cloud_size_noise,
185 (float)p_in_noise_i.Y * cloud_size_noise,
187 grid[i] = (noise >= 0.4);
191 #define GETINDEX(x, z, radius) (((z)+(radius))*(radius)*2 + (x)+(radius))
192 #define INAREA(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(INAREA(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(INAREA(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(INAREA(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(INAREA(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;