mirror of https://github.com/minetest/minetest.git
417 lines
11 KiB
C++
417 lines
11 KiB
C++
/*
|
|
Part of Minetest-c55
|
|
Copyright (C) 2011 celeron55, Perttu Ahola <celeron55@gmail.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License along
|
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
/*
|
|
A quick messy implementation of terrain rendering for a long
|
|
distance according to map seed
|
|
*/
|
|
|
|
#include "farmesh.h"
|
|
|
|
#include "constants.h"
|
|
#include "debug.h"
|
|
#include "noise.h"
|
|
#include "map.h"
|
|
#include "client.h"
|
|
#include "tile.h" // ITextureSource
|
|
#include "clientmap.h"
|
|
|
|
#include "mapgen.h" // Shouldn't really be done this way
|
|
|
|
FarMesh::FarMesh(
|
|
scene::ISceneNode* parent,
|
|
scene::ISceneManager* mgr,
|
|
s32 id,
|
|
u64 seed,
|
|
Client *client
|
|
):
|
|
scene::ISceneNode(parent, mgr, id),
|
|
m_seed(seed),
|
|
m_camera_pos(0,0),
|
|
m_time(0),
|
|
m_client(client),
|
|
m_render_range(20*MAP_BLOCKSIZE)
|
|
{
|
|
dstream<<__FUNCTION_NAME<<std::endl;
|
|
|
|
//video::IVideoDriver* driver = mgr->getVideoDriver();
|
|
|
|
m_materials[0].setFlag(video::EMF_LIGHTING, false);
|
|
m_materials[0].setFlag(video::EMF_BACK_FACE_CULLING, true);
|
|
//m_materials[0].setFlag(video::EMF_BACK_FACE_CULLING, false);
|
|
m_materials[0].setFlag(video::EMF_BILINEAR_FILTER, false);
|
|
m_materials[0].setFlag(video::EMF_FOG_ENABLE, false);
|
|
//m_materials[0].setFlag(video::EMF_ANTI_ALIASING, true);
|
|
//m_materials[0].MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
|
|
m_materials[0].setFlag(video::EMF_FOG_ENABLE, true);
|
|
|
|
m_materials[1].setFlag(video::EMF_LIGHTING, false);
|
|
m_materials[1].setFlag(video::EMF_BACK_FACE_CULLING, false);
|
|
m_materials[1].setFlag(video::EMF_BILINEAR_FILTER, false);
|
|
m_materials[1].setFlag(video::EMF_FOG_ENABLE, false);
|
|
m_materials[1].setTexture(0, client->tsrc()->getTextureRaw("treeprop.png"));
|
|
m_materials[1].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
|
|
m_materials[1].setFlag(video::EMF_FOG_ENABLE, true);
|
|
|
|
m_box = core::aabbox3d<f32>(-BS*1000000,-BS*31000,-BS*1000000,
|
|
BS*1000000,BS*31000,BS*1000000);
|
|
|
|
}
|
|
|
|
FarMesh::~FarMesh()
|
|
{
|
|
dstream<<__FUNCTION_NAME<<std::endl;
|
|
}
|
|
|
|
u32 FarMesh::getMaterialCount() const
|
|
{
|
|
return FARMESH_MATERIAL_COUNT;
|
|
}
|
|
|
|
video::SMaterial& FarMesh::getMaterial(u32 i)
|
|
{
|
|
return m_materials[i];
|
|
}
|
|
|
|
|
|
void FarMesh::OnRegisterSceneNode()
|
|
{
|
|
if(IsVisible)
|
|
{
|
|
//SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
|
|
SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
|
|
//SceneManager->registerNodeForRendering(this, scene::ESNRP_SKY_BOX);
|
|
}
|
|
|
|
ISceneNode::OnRegisterSceneNode();
|
|
}
|
|
|
|
#define MYROUND(x) (x > 0.0 ? (int)x : (int)x - 1)
|
|
|
|
// Temporary hack
|
|
struct HeightPoint
|
|
{
|
|
float gh; // ground height
|
|
float ma; // mud amount
|
|
float have_sand;
|
|
float tree_amount;
|
|
};
|
|
core::map<v2s16, HeightPoint> g_heights;
|
|
|
|
HeightPoint ground_height(u64 seed, v2s16 p2d)
|
|
{
|
|
core::map<v2s16, HeightPoint>::Node *n = g_heights.find(p2d);
|
|
if(n)
|
|
return n->getValue();
|
|
HeightPoint hp;
|
|
s16 level = Mapgen::find_ground_level_from_noise(seed, p2d, 3);
|
|
hp.gh = (level-4)*BS;
|
|
hp.ma = (4)*BS;
|
|
/*hp.gh = BS*base_rock_level_2d(seed, p2d);
|
|
hp.ma = BS*get_mud_add_amount(seed, p2d);*/
|
|
hp.have_sand = Mapgen::get_have_beach(seed, p2d);
|
|
if(hp.gh > BS*WATER_LEVEL)
|
|
hp.tree_amount = Mapgen::tree_amount_2d(seed, p2d);
|
|
else
|
|
hp.tree_amount = 0;
|
|
// No mud has been added if mud amount is less than 1
|
|
if(hp.ma < 1.0*BS)
|
|
hp.ma = 0.0;
|
|
//hp.gh -= BS*3; // Lower a bit so that it is not that much in the way
|
|
g_heights[p2d] = hp;
|
|
return hp;
|
|
}
|
|
|
|
void FarMesh::render()
|
|
{
|
|
video::IVideoDriver* driver = SceneManager->getVideoDriver();
|
|
|
|
/*if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_TRANSPARENT)
|
|
return;*/
|
|
if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_SOLID)
|
|
return;
|
|
/*if(SceneManager->getSceneNodeRenderPass() != scene::ESNRP_SKY_BOX)
|
|
return;*/
|
|
|
|
driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
|
|
|
|
//const s16 grid_radius_i = 12;
|
|
//const float grid_size = BS*50;
|
|
const s16 grid_radius_i = m_render_range/MAP_BLOCKSIZE;
|
|
const float grid_size = BS*MAP_BLOCKSIZE;
|
|
const v2f grid_speed(-BS*0, 0);
|
|
|
|
// Position of grid noise origin in world coordinates
|
|
v2f world_grid_origin_pos_f(0,0);
|
|
// Position of grid noise origin from the camera
|
|
v2f grid_origin_from_camera_f = world_grid_origin_pos_f - m_camera_pos;
|
|
// The center point of drawing in the noise
|
|
v2f center_of_drawing_in_noise_f = -grid_origin_from_camera_f;
|
|
// The integer center point of drawing in the noise
|
|
v2s16 center_of_drawing_in_noise_i(
|
|
MYROUND(center_of_drawing_in_noise_f.X / grid_size),
|
|
MYROUND(center_of_drawing_in_noise_f.Y / grid_size)
|
|
);
|
|
// The world position of the integer center point of drawing in the noise
|
|
v2f world_center_of_drawing_in_noise_f = v2f(
|
|
center_of_drawing_in_noise_i.X * grid_size,
|
|
center_of_drawing_in_noise_i.Y * grid_size
|
|
) + world_grid_origin_pos_f;
|
|
|
|
for(s16 zi=-grid_radius_i; zi<grid_radius_i; zi++)
|
|
for(s16 xi=-grid_radius_i; xi<grid_radius_i; xi++)
|
|
{
|
|
/*// Don't draw very close to player
|
|
s16 dd = 3;
|
|
if(zi > -dd && zi < dd && xi > -dd && xi < dd)
|
|
continue;*/
|
|
|
|
v2s16 p_in_noise_i(
|
|
xi+center_of_drawing_in_noise_i.X,
|
|
zi+center_of_drawing_in_noise_i.Y
|
|
);
|
|
|
|
// If sector was drawn, don't draw it this way
|
|
if(m_client->m_env.getClientMap().sectorWasDrawn(p_in_noise_i))
|
|
continue;
|
|
|
|
/*if((p_in_noise_i.X + p_in_noise_i.Y)%2==0)
|
|
continue;*/
|
|
/*if((p_in_noise_i.X/2 + p_in_noise_i.Y/2)%2==0)
|
|
continue;*/
|
|
|
|
v2f p0 = v2f(xi,zi)*grid_size + world_center_of_drawing_in_noise_f;
|
|
|
|
/*double noise[4];
|
|
double d = 100*BS;
|
|
noise[0] = d*noise2d_perlin(
|
|
(float)(p_in_noise_i.X+0)*grid_size/BS/100,
|
|
(float)(p_in_noise_i.Y+0)*grid_size/BS/100,
|
|
m_seed, 3, 0.5);
|
|
|
|
noise[1] = d*noise2d_perlin(
|
|
(float)(p_in_noise_i.X+0)*grid_size/BS/100,
|
|
(float)(p_in_noise_i.Y+1)*grid_size/BS/100,
|
|
m_seed, 3, 0.5);
|
|
|
|
noise[2] = d*noise2d_perlin(
|
|
(float)(p_in_noise_i.X+1)*grid_size/BS/100,
|
|
(float)(p_in_noise_i.Y+1)*grid_size/BS/100,
|
|
m_seed, 3, 0.5);
|
|
|
|
noise[3] = d*noise2d_perlin(
|
|
(float)(p_in_noise_i.X+1)*grid_size/BS/100,
|
|
(float)(p_in_noise_i.Y+0)*grid_size/BS/100,
|
|
m_seed, 3, 0.5);*/
|
|
|
|
HeightPoint hps[5];
|
|
hps[0] = ground_height(m_seed, v2s16(
|
|
(p_in_noise_i.X+0)*grid_size/BS,
|
|
(p_in_noise_i.Y+0)*grid_size/BS));
|
|
hps[1] = ground_height(m_seed, v2s16(
|
|
(p_in_noise_i.X+0)*grid_size/BS,
|
|
(p_in_noise_i.Y+1)*grid_size/BS));
|
|
hps[2] = ground_height(m_seed, v2s16(
|
|
(p_in_noise_i.X+1)*grid_size/BS,
|
|
(p_in_noise_i.Y+1)*grid_size/BS));
|
|
hps[3] = ground_height(m_seed, v2s16(
|
|
(p_in_noise_i.X+1)*grid_size/BS,
|
|
(p_in_noise_i.Y+0)*grid_size/BS));
|
|
v2s16 centerpoint(
|
|
(p_in_noise_i.X+0)*grid_size/BS+MAP_BLOCKSIZE/2,
|
|
(p_in_noise_i.Y+0)*grid_size/BS+MAP_BLOCKSIZE/2);
|
|
hps[4] = ground_height(m_seed, centerpoint);
|
|
|
|
float noise[5];
|
|
float h_min = BS*65535;
|
|
float h_max = -BS*65536;
|
|
float ma_avg = 0;
|
|
float h_avg = 0;
|
|
u32 have_sand_count = 0;
|
|
float tree_amount_avg = 0;
|
|
for(u32 i=0; i<5; i++)
|
|
{
|
|
noise[i] = hps[i].gh + hps[i].ma;
|
|
if(noise[i] < h_min)
|
|
h_min = noise[i];
|
|
if(noise[i] > h_max)
|
|
h_max = noise[i];
|
|
ma_avg += hps[i].ma;
|
|
h_avg += noise[i];
|
|
if(hps[i].have_sand)
|
|
have_sand_count++;
|
|
tree_amount_avg += hps[i].tree_amount;
|
|
}
|
|
ma_avg /= 5.0;
|
|
h_avg /= 5.0;
|
|
tree_amount_avg /= 5.0;
|
|
|
|
float steepness = (h_max - h_min)/grid_size;
|
|
|
|
float light_f = noise[0]+noise[1]-noise[2]-noise[3];
|
|
light_f /= 100;
|
|
if(light_f < -1.0) light_f = -1.0;
|
|
if(light_f > 1.0) light_f = 1.0;
|
|
//light_f += 1.0;
|
|
//light_f /= 2.0;
|
|
|
|
v2f p1 = p0 + v2f(1,1)*grid_size;
|
|
|
|
bool ground_is_sand = false;
|
|
bool ground_is_rock = false;
|
|
bool ground_is_mud = false;
|
|
video::SColor c;
|
|
// Detect water
|
|
if(h_avg < WATER_LEVEL*BS && h_max < (WATER_LEVEL+5)*BS)
|
|
{
|
|
//c = video::SColor(255,59,86,146);
|
|
//c = video::SColor(255,82,120,204);
|
|
c = video::SColor(255,74,105,170);
|
|
|
|
/*// Set to water level
|
|
for(u32 i=0; i<4; i++)
|
|
{
|
|
if(noise[i] < BS*WATER_LEVEL)
|
|
noise[i] = BS*WATER_LEVEL;
|
|
}*/
|
|
light_f = 0;
|
|
}
|
|
// Steep cliffs
|
|
else if(steepness > 2.0)
|
|
{
|
|
c = video::SColor(255,128,128,128);
|
|
ground_is_rock = true;
|
|
}
|
|
// Basic ground
|
|
else
|
|
{
|
|
if(ma_avg < 2.0*BS)
|
|
{
|
|
c = video::SColor(255,128,128,128);
|
|
ground_is_rock = true;
|
|
}
|
|
else
|
|
{
|
|
if(h_avg <= 2.5*BS && have_sand_count >= 2)
|
|
{
|
|
c = video::SColor(255,210,194,156);
|
|
ground_is_sand = true;
|
|
}
|
|
else
|
|
{
|
|
/*// Trees if there are over 0.01 trees per MapNode
|
|
if(tree_amount_avg > 0.01)
|
|
c = video::SColor(255,50,128,50);
|
|
else
|
|
c = video::SColor(255,107,134,51);*/
|
|
c = video::SColor(255,107,134,51);
|
|
ground_is_mud = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Set to water level
|
|
for(u32 i=0; i<4; i++)
|
|
{
|
|
if(noise[i] < BS*WATER_LEVEL)
|
|
noise[i] = BS*WATER_LEVEL;
|
|
}
|
|
|
|
float b = m_brightness + light_f*0.1*m_brightness;
|
|
if(b < 0) b = 0;
|
|
if(b > 2) b = 2;
|
|
|
|
c = video::SColor(255, b*c.getRed(), b*c.getGreen(), b*c.getBlue());
|
|
|
|
driver->setMaterial(m_materials[0]);
|
|
|
|
video::S3DVertex vertices[4] =
|
|
{
|
|
video::S3DVertex(p0.X,noise[0],p0.Y, 0,0,0, c, 0,1),
|
|
video::S3DVertex(p0.X,noise[1],p1.Y, 0,0,0, c, 1,1),
|
|
video::S3DVertex(p1.X,noise[2],p1.Y, 0,0,0, c, 1,0),
|
|
video::S3DVertex(p1.X,noise[3],p0.Y, 0,0,0, c, 0,0),
|
|
};
|
|
u16 indices[] = {0,1,2,2,3,0};
|
|
driver->drawVertexPrimitiveList(vertices, 4, indices, 2,
|
|
video::EVT_STANDARD, scene::EPT_TRIANGLES, video::EIT_16BIT);
|
|
|
|
// Add some trees if appropriate
|
|
if(tree_amount_avg >= 0.0065 && steepness < 1.4
|
|
&& ground_is_mud == true)
|
|
{
|
|
driver->setMaterial(m_materials[1]);
|
|
|
|
float b = m_brightness;
|
|
c = video::SColor(255, b*255, b*255, b*255);
|
|
|
|
{
|
|
video::S3DVertex vertices[4] =
|
|
{
|
|
video::S3DVertex(p0.X,noise[0],p0.Y,
|
|
0,0,0, c, 0,1),
|
|
video::S3DVertex(p0.X,noise[0]+BS*MAP_BLOCKSIZE,p0.Y,
|
|
0,0,0, c, 0,0),
|
|
video::S3DVertex(p1.X,noise[2]+BS*MAP_BLOCKSIZE,p1.Y,
|
|
0,0,0, c, 1,0),
|
|
video::S3DVertex(p1.X,noise[2],p1.Y,
|
|
0,0,0, c, 1,1),
|
|
};
|
|
u16 indices[] = {0,1,2,2,3,0};
|
|
driver->drawVertexPrimitiveList(vertices, 4, indices, 2,
|
|
video::EVT_STANDARD, scene::EPT_TRIANGLES,
|
|
video::EIT_16BIT);
|
|
}
|
|
{
|
|
video::S3DVertex vertices[4] =
|
|
{
|
|
video::S3DVertex(p1.X,noise[3],p0.Y,
|
|
0,0,0, c, 0,1),
|
|
video::S3DVertex(p1.X,noise[3]+BS*MAP_BLOCKSIZE,p0.Y,
|
|
0,0,0, c, 0,0),
|
|
video::S3DVertex(p0.X,noise[1]+BS*MAP_BLOCKSIZE,p1.Y,
|
|
0,0,0, c, 1,0),
|
|
video::S3DVertex(p0.X,noise[1],p1.Y,
|
|
0,0,0, c, 1,1),
|
|
};
|
|
u16 indices[] = {0,1,2,2,3,0};
|
|
driver->drawVertexPrimitiveList(vertices, 4, indices, 2,
|
|
video::EVT_STANDARD, scene::EPT_TRIANGLES,
|
|
video::EIT_16BIT);
|
|
}
|
|
}
|
|
}
|
|
|
|
//driver->clearZBuffer();
|
|
}
|
|
|
|
void FarMesh::step(float dtime)
|
|
{
|
|
m_time += dtime;
|
|
}
|
|
|
|
void FarMesh::update(v2f camera_p, float brightness, s16 render_range)
|
|
{
|
|
m_camera_pos = camera_p;
|
|
m_brightness = brightness;
|
|
m_render_range = render_range;
|
|
}
|
|
|
|
|