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better grass generation (integration to sunlight propagation algorithms)

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This commit is contained in:
Perttu Ahola 2010-12-26 14:34:34 +02:00
parent c32da52104
commit 847a4227b8
3 changed files with 90 additions and 29 deletions
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93
src/map.cpp
View File

@ -570,6 +570,8 @@ v3s16 Map::getBrightestNeighbour(enum LightBank bank, v3s16 p)
Starting point gets sunlight.
Returns the lowest y value of where the sunlight went.
Mud is turned into grass in where the sunlight stops.
*/
s16 Map::propagateSunlight(v3s16 start,
core::map<v3s16, MapBlock*> & modified_blocks)
@ -599,7 +601,17 @@ s16 Map::propagateSunlight(v3s16 start,
modified_blocks.insert(blockpos, block);
}
else{
else
{
// Turn mud into grass
if(n.d == CONTENT_MUD)
{
n.d = CONTENT_GRASS;
block->setNode(relpos, n);
modified_blocks.insert(blockpos, block);
}
// Sunlight goes no further
break;
}
}
@ -1912,10 +1924,6 @@ continue_generating:
}
}
// This is the basic material of what the visible flat ground
// will consist of
u8 material = CONTENT_GRASS;
u8 water_material = CONTENT_WATER;
if(g_settings.getBool("endless_water"))
water_material = CONTENT_OCEAN;
@ -1981,7 +1989,66 @@ continue_generating:
Calculate material
*/
if(real_y <= surface_y - surface_depth)
// If node is over heightmap y, it's air or water
if(real_y > surface_y)
{
// If under water level, it's water
if(real_y < WATER_LEVEL)
{
n.d = water_material;
n.setLight(LIGHTBANK_DAY,
diminish_light(LIGHT_SUN, WATER_LEVEL-real_y+1));
}
// else air
else
n.d = CONTENT_AIR;
}
// Else it's ground or dungeons (air)
else
{
// Create dungeons
if(underground_emptiness[
ued*ued*(z0*ued/MAP_BLOCKSIZE)
+ued*(y0*ued/MAP_BLOCKSIZE)
+(x0*ued/MAP_BLOCKSIZE)])
{
n.d = CONTENT_AIR;
}
else
{
// If it's surface_depth under ground, it's stone
if(real_y <= surface_y - surface_depth)
{
n.d = CONTENT_STONE;
}
else
{
// It is mud if it is under the first ground
// level or under water
if(real_y < WATER_LEVEL || real_y <= surface_y - 1)
{
n.d = CONTENT_MUD;
}
else
{
n.d = CONTENT_GRASS;
}
//n.d = CONTENT_MUD;
/*// If under water level, it's mud
if(real_y < WATER_LEVEL)
n.d = CONTENT_MUD;
// Only the topmost node is grass
else if(real_y <= surface_y - 1)
n.d = CONTENT_MUD;
else
n.d = CONTENT_GRASS;*/
}
}
}
#if 0
else if(real_y <= surface_y - surface_depth)
{
// Create dungeons
if(underground_emptiness[
@ -2009,19 +2076,7 @@ continue_generating:
else
n.d = material;
}
// If node is over heightmap y
else{
// If under water level, it's water
if(real_y < WATER_LEVEL)
{
n.d = water_material;
n.setLight(LIGHTBANK_DAY,
diminish_light(LIGHT_SUN, WATER_LEVEL-real_y+1));
}
// else air
else
n.d = CONTENT_AIR;
}
#endif
block->setNode(v3s16(x0,y0,z0), n);
}
}

23
src/mapblock.cpp
View File

@ -860,7 +860,9 @@ void MapBlock::updateMesh(u32 daynight_ratio)
is_underground is set.
At the moment, all sunlighted nodes are added to light_sources.
TODO: This could be optimized.
- SUGG: This could be optimized
Turns sunglighted mud into grass.
*/
bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources)
{
@ -880,10 +882,6 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources)
MapNode n = getNodeParent(v3s16(x, MAP_BLOCKSIZE, z));
if(n.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
{
/*if(is_underground)
{
no_sunlight = true;
}*/
no_sunlight = true;
}
}
@ -891,15 +889,14 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources)
{
no_top_block = true;
// TODO: This makes over-ground roofed places sunlighted
// NOTE: This makes over-ground roofed places sunlighted
// Assume sunlight, unless is_underground==true
if(is_underground)
{
no_sunlight = true;
}
// TODO: There has to be some way to allow this behaviour
// As of now, it just makes everything dark.
// NOTE: As of now, it just would make everything dark.
// No sunlight here
//no_sunlight = true;
}
@ -928,7 +925,15 @@ bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources)
light_sources.insert(pos_relative + pos, true);
}
else{
else
{
// Turn mud into grass
if(n.d == CONTENT_MUD)
{
n.d = CONTENT_GRASS;
}
// Sunlight goes no further
break;
}
}

3
src/mapblock.h
View File

@ -310,7 +310,8 @@ public:
// Updates all DAYNIGHT_CACHE_COUNT meshes
void updateMeshes(s32 first_i=0);*/
#endif // !SERVER
// See comments in mapblock.cpp
bool propagateSunlight(core::map<v3s16, bool> & light_sources);
// Copies data to VoxelManipulator to getPosRelative()