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https://gitlab.com/gaelysam/mapgen_rivers.git
synced 2025-02-21 14:30:32 +01:00
Generate grid directly in pregenerate.lua, not in a function
This commit is contained in:
Gaël C
parent
4697f9c948
commit
2cf3b19167
@ -69,25 +69,6 @@ function mapgen_rivers.try_load_grid(grid)
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return true
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end
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function mapgen_rivers.generate_grid()
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minetest.log("action", '[mapgen_rivers] Generating grid, this may take a while...')
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local grid = {}
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local blocksize = mapgen_rivers.settings.blocksize
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local xsize = math.floor(mapgen_rivers.settings.map_x_size / blocksize)
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local zsize = math.floor(mapgen_rivers.settings.map_z_size / blocksize)
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grid.size = {x=xsize, y=zsize}
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if not mapgen_rivers.pregenerate then
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minetest.log("error", "[mapgen_rivers] Pre-generation function is not available.")
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return false
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end
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mapgen_rivers.pregenerate(grid)
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return grid
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end
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function mapgen_rivers.write_grid(grid)
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minetest.mkdir(world_data)
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4
init.lua
4
init.lua
@ -17,9 +17,7 @@ minetest.register_on_mods_loaded(function()
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local exist = mapgen_rivers.try_load_grid()
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if not exist then -- If grid does not exist yet, generate it
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dofile(modpath .. 'pregenerate.lua')
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local grid = mapgen_rivers.generate_grid()
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local grid = dofile(modpath .. 'pregenerate.lua')
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mapgen_rivers.write_grid(grid)
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mapgen_rivers.try_load_grid() -- Reload if needed
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end
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105
pregenerate.lua
105
pregenerate.lua
@ -21,6 +21,9 @@ local use_margin = mapgen_rivers.settings.margin
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local margin_width = mapgen_rivers.settings.margin_width / blocksize
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local margin_elev = mapgen_rivers.settings.margin_elev
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local X = math.floor(mapgen_rivers.settings.map_x_size / blocksize)
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local Y = math.floor(mapgen_rivers.settings.map_z_size / blocksize)
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local function margin(dem, width, elev)
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local X, Y = dem.X, dem.Y
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for i=1, width do
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@ -49,66 +52,70 @@ local function margin(dem, width, elev)
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end
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end
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function mapgen_rivers.pregenerate(grid)
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local size = grid.size
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-- Generate the grid
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if size.x * size.y > 4e6 then
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minetest.log("warning", "[mapgen_rivers] You are going to generate a very large grid (>4M nodes). If you experience problems, you should increase blocksize or reduce map size.")
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end
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minetest.log("action", '[mapgen_rivers] Generating grid, this may take a while...')
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local seed = tonumber(minetest.get_mapgen_setting("seed"):sub(-10))
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np_base.seed = (np_base.seed or 0) + seed
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local grid = {size={x=X, y=Y}}
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local nobj_base = PerlinNoiseMap(np_base, {x=size.x, y=1, z=size.y})
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if X*Y > 4e6 then
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minetest.log("warning", "[mapgen_rivers] You are going to generate a very large grid (>4M nodes). If you experience problems, you should increase blocksize or reduce map size.")
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end
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local dem = nobj_base:get_3d_map_flat({x=0, y=0, z=0})
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dem.X = size.x
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dem.Y = size.y
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local seed = tonumber(minetest.get_mapgen_setting("seed"):sub(-10))
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np_base.seed = (np_base.seed or 0) + seed
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if use_margin then
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margin(dem, margin_width, margin_elev)
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end
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local nobj_base = PerlinNoiseMap(np_base, {x=X, y=1, z=Y})
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local model = EvolutionModel(evol_params)
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model.dem = dem
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local ref_dem = model:define_isostasy(dem)
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local dem = nobj_base:get_3d_map_flat({x=0, y=0, z=0})
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dem.X = X
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dem.Y = Y
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local tectonic_step = tectonic_speed * time_step
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collectgarbage()
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for i=1, niter do
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minetest.log("info", "[mapgen_rivers] Iteration " .. i .. " of " .. niter)
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if use_margin then
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margin(dem, margin_width, margin_elev)
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end
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model:diffuse(time_step)
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model:flow()
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model:erode(time_step)
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if i < niter then
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if tectonic_step ~= 0 then
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nobj_base:get_3d_map_flat({x=0, y=tectonic_step*i, z=0}, ref_dem)
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if use_margin then
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margin(ref_dem, margin_width, margin_elev)
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end
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end
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model:isostasy()
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end
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local model = EvolutionModel(evol_params)
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model.dem = dem
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local ref_dem = model:define_isostasy(dem)
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collectgarbage()
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end
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local tectonic_step = tectonic_speed * time_step
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collectgarbage()
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for i=1, niter do
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minetest.log("info", "[mapgen_rivers] Iteration " .. i .. " of " .. niter)
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model:diffuse(time_step)
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model:flow()
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local mfloor = math.floor
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local mmin, mmax = math.min, math.max
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local offset_x, offset_y = twist(model.dirs, model.rivers, 5)
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for i=1, size.x*size.y do
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offset_x[i] = mmin(mmax(offset_x[i]*256, -128), 127)
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offset_y[i] = mmin(mmax(offset_y[i]*256, -128), 127)
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model:erode(time_step)
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if i < niter then
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if tectonic_step ~= 0 then
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nobj_base:get_3d_map_flat({x=0, y=tectonic_step*i, z=0}, ref_dem)
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if use_margin then
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margin(ref_dem, margin_width, margin_elev)
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end
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end
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model:isostasy()
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end
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grid.dem = model.dem
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grid.lakes = model.lakes
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grid.dirs = model.dirs
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grid.rivers = model.rivers
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grid.offset_x = offset_x
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grid.offset_y = offset_y
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collectgarbage()
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end
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model:flow()
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local mfloor = math.floor
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local mmin, mmax = math.min, math.max
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local offset_x, offset_y = twist(model.dirs, model.rivers, 5)
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for i=1, X*Y do
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offset_x[i] = mmin(mmax(offset_x[i]*256, -128), 127)
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offset_y[i] = mmin(mmax(offset_y[i]*256, -128), 127)
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end
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grid.dem = model.dem
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grid.lakes = model.lakes
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grid.dirs = model.dirs
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grid.rivers = model.rivers
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grid.offset_x = offset_x
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grid.offset_y = offset_y
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collectgarbage()
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return grid
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