mtcontrib/mapgen_rivers
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Add more information in the polygon table

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This commit is contained in:
Gael-de-Sailly 2020-04-13 10:31:38 +02:00
parent eba90803fe
commit 4b63ed371e
1 changed files with 10 additions and 11 deletions
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21
init.lua
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@ -54,7 +54,7 @@ local function get_point_location(x, z)
return x+offset_x[i], z+offset_z[i]
end
local function interp(v00, v01, v10, v11, xf, zf)
local function interp(v00, v01, v11, v10, xf, zf)
local v0 = v01*xf + v00*(1-xf)
local v1 = v11*xf + v10*(1-xf)
return v1*zf + v0*(1-zf)
@ -148,6 +148,9 @@ local function generate(minp, maxp, seed)
end
end
end
polygon.dem = {dem[iA], dem[iB], dem[iC], dem[iD]}
polygon.lake = math.min(lakes[iA], lakes[iB], lakes[iC], lakes[iD])
end
end
@ -159,20 +162,16 @@ local function generate(minp, maxp, seed)
local xf, zf = geometry.transform_quadri(poly.x, poly.z, x/blocksize, z/blocksize)
local i00, i01, i11, i10 = unpack(poly.i)
local vdem = poly.dem
local terrain_height = math.floor(interp(
dem[i00],
dem[i01],
dem[i10],
dem[i11],
vdem[1],
vdem[2],
vdem[3],
vdem[4],
xf, zf
))
local lake_height = math.floor(math.min(
lakes[i00],
lakes[i01],
lakes[i10],
lakes[i11]
))
local lake_height = math.floor(poly.lake)
local is_lake = lake_height > terrain_height