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description of water and lava flood-fills

Alex Mulkerrin 2015-12-03 13:51:04 +00:00
parent b0a0c8e5ee
commit 9efff51e4a
1 changed files with 15 additions and 5 deletions
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Minecraft-Classic-map-generation-algorithm.md

@ -97,7 +97,7 @@ For each cave:
Let cavePos be a random point (x,y,z) within the (width,height,depth) space.
Let caveLength be randomFloat() * randomFloat() * 200
//cave direction is given by two angles and corresponding rate of change in those angles,
//cave direction is given by two angles and corresponding rate of change in those angles,
//spherical coordinates perhaps?
Let theta be randomFloat() * Pi * 2
Let deltaTheta be 0
@ -132,7 +132,7 @@ for len in caveLength {
where fillOblateSpheroid is a method which takes a central point, a radius and a fillBlockID to use on the block array.
For each entry (x,y,z) within -radius to +radius within the block array:
For each entry (x,y,z) within -radius to +radius in the block array:
```
dx = x - center.x
dy = y - center.y
@ -178,11 +178,21 @@ for len in veinLength {
fillOblateSpheroid( veinPos, radius, oreBlockID)
}
```
## Flood-fill water
// Todo
Water is flood-filled into the map, spreading horizontally and down vertically, from the x,z edges of the map at a height of water level - 1.
Some underground water sources are then added to the block array to create flooded caves. The number seeded is:
width x depth / 800
For each water source a random x and z coordinate value is chosen and the y coordinate is set to water level - 1, or water level - 2. If this position in the block array is AIR then the water flood-fills out and downwards.
## Flood-fill lava
// Todo
The lowest layer of the block array is always lava, having been set so during strata generation. A few lava flooded caves might form. Only width x depth / 20,000 lava sources will be seeded.
For each lava source a random x and z coordinate value is chosen and the y coordinate is set to (water level - 3) x randomFloat() x randomFloat(). If the position is AIR then lava is flood-filled from that point.
## Create surface layers
// Todo
## Create plants