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;
33 static void cloud_3d_setting_changed(const std::string &settingname, void *data)
35 // TODO: only re-read cloud settings, not height or radius
36 ((Clouds *)data)->readSettings();
40 scene::ISceneNode* parent,
41 scene::ISceneManager* mgr,
46 scene::ISceneNode(parent, mgr, id),
48 m_camera_pos(0.0f, 0.0f),
50 m_camera_offset(0.0f, 0.0f, 0.0f),
51 m_color(1.0f, 1.0f, 1.0f, 1.0f)
53 m_material.setFlag(video::EMF_LIGHTING, false);
54 //m_material.setFlag(video::EMF_BACK_FACE_CULLING, false);
55 m_material.setFlag(video::EMF_BACK_FACE_CULLING, true);
56 m_material.setFlag(video::EMF_BILINEAR_FILTER, false);
57 m_material.setFlag(video::EMF_FOG_ENABLE, true);
58 m_material.setFlag(video::EMF_ANTI_ALIASING, true);
59 //m_material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
60 m_material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
62 m_params.density = 0.4f;
63 m_params.thickness = 16.0f;
64 m_params.color_bright = video::SColor(229, 240, 240, 255);
65 m_params.color_ambient = video::SColor(255, 0, 0, 0);
66 m_params.speed = v2f(0.0f, -2.0f);
68 m_passed_cloud_y = cloudheight;
70 g_settings->registerChangedCallback("enable_3d_clouds",
71 &cloud_3d_setting_changed, this);
78 g_settings->deregisterChangedCallback("enable_3d_clouds",
79 &cloud_3d_setting_changed, this);
82 void Clouds::OnRegisterSceneNode()
86 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
87 //SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
90 ISceneNode::OnRegisterSceneNode();
93 #define MYROUND(x) (x > 0.0 ? (int)x : (int)x - 1)
98 if (m_params.density <= 0.0f)
99 return; // no need to do anything
101 video::IVideoDriver* driver = SceneManager->getVideoDriver();
103 if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_TRANSPARENT)
104 //if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_SOLID)
107 ScopeProfiler sp(g_profiler, "Rendering of clouds, avg", SPT_AVG);
109 int num_faces_to_draw = m_enable_3d ? 6 : 1;
111 m_material.setFlag(video::EMF_BACK_FACE_CULLING, m_enable_3d);
113 driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
114 driver->setMaterial(m_material);
117 Clouds move from Z+ towards Z-
120 static const float cloud_size = BS * 64.0f;
122 const float cloud_full_radius = cloud_size * m_cloud_radius_i;
124 // Position of cloud noise origin from the camera
125 v2f cloud_origin_from_camera_f = m_origin - m_camera_pos;
126 // The center point of drawing in the noise
127 v2f center_of_drawing_in_noise_f = -cloud_origin_from_camera_f;
128 // The integer center point of drawing in the noise
129 v2s16 center_of_drawing_in_noise_i(
130 MYROUND(center_of_drawing_in_noise_f.X / cloud_size),
131 MYROUND(center_of_drawing_in_noise_f.Y / cloud_size)
133 // The world position of the integer center point of drawing in the noise
134 v2f world_center_of_drawing_in_noise_f = v2f(
135 center_of_drawing_in_noise_i.X * cloud_size,
136 center_of_drawing_in_noise_i.Y * cloud_size
139 /*video::SColor c_top(128,b*240,b*240,b*255);
140 video::SColor c_side_1(128,b*230,b*230,b*255);
141 video::SColor c_side_2(128,b*220,b*220,b*245);
142 video::SColor c_bottom(128,b*205,b*205,b*230);*/
143 video::SColorf c_top_f(m_color);
144 video::SColorf c_side_1_f(m_color);
145 video::SColorf c_side_2_f(m_color);
146 video::SColorf c_bottom_f(m_color);
147 c_side_1_f.r *= 0.95;
148 c_side_1_f.g *= 0.95;
149 c_side_1_f.b *= 0.95;
150 c_side_2_f.r *= 0.90;
151 c_side_2_f.g *= 0.90;
152 c_side_2_f.b *= 0.90;
153 c_bottom_f.r *= 0.80;
154 c_bottom_f.g *= 0.80;
155 c_bottom_f.b *= 0.80;
156 video::SColor c_top = c_top_f.toSColor();
157 video::SColor c_side_1 = c_side_1_f.toSColor();
158 video::SColor c_side_2 = c_side_2_f.toSColor();
159 video::SColor c_bottom = c_bottom_f.toSColor();
161 // Get fog parameters for setting them back later
162 video::SColor fog_color(0,0,0,0);
163 video::E_FOG_TYPE fog_type = video::EFT_FOG_LINEAR;
167 bool fog_pixelfog = false;
168 bool fog_rangefog = false;
169 driver->getFog(fog_color, fog_type, fog_start, fog_end, fog_density,
170 fog_pixelfog, fog_rangefog);
173 driver->setFog(fog_color, fog_type, cloud_full_radius * 0.5,
174 cloud_full_radius*1.2, fog_density, fog_pixelfog, fog_rangefog);
178 bool *grid = new bool[m_cloud_radius_i * 2 * m_cloud_radius_i * 2];
180 float cloud_size_noise = cloud_size / BS / 200;
182 for(s16 zi = -m_cloud_radius_i; zi < m_cloud_radius_i; zi++) {
183 u32 si = (zi + m_cloud_radius_i) * m_cloud_radius_i * 2 + m_cloud_radius_i;
185 for (s16 xi = -m_cloud_radius_i; xi < m_cloud_radius_i; xi++) {
189 xi + center_of_drawing_in_noise_i.X,
190 zi + center_of_drawing_in_noise_i.Y
193 float noise = noise2d_perlin(
194 (float)p_in_noise_i.X * cloud_size_noise,
195 (float)p_in_noise_i.Y * cloud_size_noise,
197 // normalize to 0..1 (given 3 octaves)
198 static const float noise_bound = 1.0f + 0.5f + 0.25f;
199 float density = noise / noise_bound * 0.5f + 0.5f;
200 grid[i] = (density < m_params.density);
204 #define GETINDEX(x, z, radius) (((z)+(radius))*(radius)*2 + (x)+(radius))
205 #define INAREA(x, z, radius) \
206 ((x) >= -(radius) && (x) < (radius) && (z) >= -(radius) && (z) < (radius))
208 for (s16 zi0= -m_cloud_radius_i; zi0 < m_cloud_radius_i; zi0++)
209 for (s16 xi0= -m_cloud_radius_i; xi0 < m_cloud_radius_i; xi0++)
213 // Draw from front to back (needed for transparency)
215 zi = -m_cloud_radius_i - zi;
217 xi = -m_cloud_radius_i - xi;*/
218 // Draw from back to front
220 zi = m_cloud_radius_i - zi - 1;
222 xi = m_cloud_radius_i - xi - 1;
224 u32 i = GETINDEX(xi, zi, m_cloud_radius_i);
229 v2f p0 = v2f(xi,zi)*cloud_size + world_center_of_drawing_in_noise_f;
231 video::S3DVertex v[4] = {
232 video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 1),
233 video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 1),
234 video::S3DVertex(0,0,0, 0,0,0, c_top, 1, 0),
235 video::S3DVertex(0,0,0, 0,0,0, c_top, 0, 0)
238 /*if(zi <= 0 && xi <= 0){
239 v[0].Color.setBlue(255);
240 v[1].Color.setBlue(255);
241 v[2].Color.setBlue(255);
242 v[3].Color.setBlue(255);
245 f32 rx = cloud_size / 2.0f;
246 // if clouds are flat, the top layer should be at the given height
247 f32 ry = m_enable_3d ? m_params.thickness * BS : 0.0f;
248 f32 rz = cloud_size / 2;
250 for(int i=0; i<num_faces_to_draw; i++)
255 for(int j=0;j<4;j++){
256 v[j].Normal.set(0,1,0);
258 v[0].Pos.set(-rx, ry,-rz);
259 v[1].Pos.set(-rx, ry, rz);
260 v[2].Pos.set( rx, ry, rz);
261 v[3].Pos.set( rx, ry,-rz);
264 if (INAREA(xi, zi - 1, m_cloud_radius_i)) {
265 u32 j = GETINDEX(xi, zi - 1, m_cloud_radius_i);
269 for(int j=0;j<4;j++){
270 v[j].Color = c_side_1;
271 v[j].Normal.set(0,0,-1);
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 + 1, zi, m_cloud_radius_i)) {
280 u32 j = GETINDEX(xi+1, zi, m_cloud_radius_i);
284 for(int j=0;j<4;j++){
285 v[j].Color = c_side_2;
286 v[j].Normal.set(1,0,0);
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, zi + 1, m_cloud_radius_i)) {
295 u32 j = GETINDEX(xi, zi + 1, m_cloud_radius_i);
299 for(int j=0;j<4;j++){
300 v[j].Color = c_side_1;
301 v[j].Normal.set(0,0,-1);
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 if (INAREA(xi-1, zi, m_cloud_radius_i)) {
310 u32 j = GETINDEX(xi-1, zi, m_cloud_radius_i);
314 for(int j=0;j<4;j++){
315 v[j].Color = c_side_2;
316 v[j].Normal.set(-1,0,0);
318 v[0].Pos.set(-rx, ry, rz);
319 v[1].Pos.set(-rx, ry,-rz);
320 v[2].Pos.set(-rx, 0,-rz);
321 v[3].Pos.set(-rx, 0, rz);
324 for(int j=0;j<4;j++){
325 v[j].Color = c_bottom;
326 v[j].Normal.set(0,-1,0);
328 v[0].Pos.set( rx, 0, rz);
329 v[1].Pos.set(-rx, 0, rz);
330 v[2].Pos.set(-rx, 0,-rz);
331 v[3].Pos.set( rx, 0,-rz);
335 v3f pos(p0.X, m_params.height * BS, p0.Y);
336 pos -= intToFloat(m_camera_offset, BS);
338 for(u16 i=0; i<4; i++)
340 u16 indices[] = {0,1,2,2,3,0};
341 driver->drawVertexPrimitiveList(v, 4, indices, 2,
342 video::EVT_STANDARD, scene::EPT_TRIANGLES, video::EIT_16BIT);
348 // Restore fog settings
349 driver->setFog(fog_color, fog_type, fog_start, fog_end, fog_density,
350 fog_pixelfog, fog_rangefog);
353 void Clouds::step(float dtime)
355 m_origin = m_origin + dtime * BS * m_params.speed;
358 void Clouds::update(v2f camera_p, video::SColorf color_diffuse)
360 m_camera_pos = camera_p;
361 m_color.r = MYMIN(MYMAX(color_diffuse.r * m_params.color_bright.getRed(),
362 m_params.color_ambient.getRed()), 255) / 255.0f;
363 m_color.g = MYMIN(MYMAX(color_diffuse.r * m_params.color_bright.getGreen(),
364 m_params.color_ambient.getGreen()), 255) / 255.0f;
365 m_color.b = MYMIN(MYMAX(color_diffuse.b * m_params.color_bright.getBlue(),
366 m_params.color_ambient.getBlue()), 255) / 255.0f;
367 m_color.a = m_params.color_bright.getAlpha() / 255.0f;
370 void Clouds::readSettings()
372 m_params.height = (m_passed_cloud_y ? m_passed_cloud_y :
373 g_settings->getS16("cloud_height"));
374 m_cloud_radius_i = g_settings->getU16("cloud_radius");
375 m_enable_3d = g_settings->getBool("enable_3d_clouds");