2022-12-19 17:43:01 +01:00
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luamap = {}
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luamap.noises = {}
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function luamap.remap(val, min_val, max_val, min_map, max_map)
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return (val-min_val)/(max_val-min_val) * (max_map-min_map) + min_map
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end
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function luamap.lerp(var_a, var_b, ratio)
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return (1-ratio)*var_a + (ratio*var_b)
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end
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function luamap.register_noise(name,data)
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luamap.noises[name] = {}
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luamap.noises[name].np_vals = data.np_vals
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luamap.noises[name].nobj = nil
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luamap.noises[name].type = data.type or "2d"
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end
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local c_air = minetest.get_content_id("air")
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-- override this function
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function luamap.logic(noise_vals,x,y,z,seed)
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return c_air
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end
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-- override this function
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function luamap.precalc(data, area, vm, minp, maxp, seed)
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return
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end
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-- Set mapgen parameters
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function luamap.set_singlenode()
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minetest.register_on_mapgen_init(function(mgparams)
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minetest.set_mapgen_params({mgname="singlenode"})
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end)
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end
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minetest.register_on_generated(function(minp, maxp, seed)
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2022-12-19 18:50:21 +01:00
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2022-12-19 17:43:01 +01:00
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local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
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local area = VoxelArea:new{MinEdge=emin, MaxEdge=emax}
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local data = vm:get_data()
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2022-12-19 18:50:21 +01:00
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local sidelen = maxp.x - minp.x + 1
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2022-12-19 17:43:01 +01:00
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local chulens3d = {x=sidelen, y=sidelen+17, z=sidelen}
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local chulens2d = {x=sidelen, y=sidelen, z=1}
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2022-12-19 18:50:21 +01:00
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local minpos3d = {x=minp.x, y=minp.y-16, z=minp.z}
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local minpos2d = {x=minp.x, y=minp.z}
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2022-12-19 17:43:01 +01:00
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for name,elements in pairs(luamap.noises) do
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if luamap.noises[name].type == "2d" then
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luamap.noises[name].nobj = luamap.noises[name].nobj or minetest.get_perlin_map(luamap.noises[name].np_vals, chulens2d)
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luamap.noises[name].nvals = luamap.noises[name].nobj:get2dMap_flat(minpos2d)
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else -- 3d
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luamap.noises[name].nobj = luamap.noises[name].nobj or minetest.get_perlin_map(luamap.noises[name].np_vals, chulens3d)
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luamap.noises[name].nvals = luamap.noises[name].nobj:get3dMap_flat(minpos3d)
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end
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end
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local ni3d = 1
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local ni2d = 1
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2022-12-19 18:50:21 +01:00
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for z = minp.z, maxp.z do
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for y = minp.y - 16, maxp.y + 1 do
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local vi = area:index(minp.x, y, z)
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for x = minp.x, maxp.x do
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2022-12-19 17:43:01 +01:00
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local noise_vals = {}
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for name,elements in pairs(luamap.noises) do
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if elements.type == "2d" then
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noise_vals[name] = elements.nvals[ni2d]
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else -- 3d
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noise_vals[name] = elements.nvals[ni3d]
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end
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end
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data[vi] = luamap.logic(noise_vals,x,y,z,seed)
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ni3d = ni3d + 1
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ni2d = ni2d + 1
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vi = vi + 1
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end
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ni2d = ni2d - sidelen
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end
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ni2d = ni2d + sidelen
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end
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luamap.precalc(data, area, vm, minp, maxp, seed)
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vm:set_data(data)
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vm:calc_lighting()
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vm:write_to_map(data)
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vm:update_liquids()
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end)
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