New ores code

RealBadAngel

2013-03-28 edd6f8c7e9bdd152a4a116874d3060cce60f3a37

New ores code

 technic/ores.lua

@@ -248,54 +248,67 @@
                recipe = "technic:zinc_lump"
            })


local function generate_ore(name, wherein, minp, maxp, seed, chunks_per_volume, ore_per_chunk, height_min, height_max)
    if maxp.y < height_min or minp.y > height_max then
        return
    end
    local y_min = math.max(minp.y, height_min)
    local y_max = math.min(maxp.y, height_max)
    local volume = (maxp.x-minp.x+1)*(y_max-y_min+1)*(maxp.z-minp.z+1)
    local pr = PseudoRandom(seed)
    local num_chunks = math.floor(chunks_per_volume * volume)
    local chunk_size = 3
    if ore_per_chunk <= 4 then
        chunk_size = 2
    end
    local inverse_chance = math.floor(chunk_size*chunk_size*chunk_size / ore_per_chunk)
    --print("generate_ore num_chunks: "..dump(num_chunks))
    for i=1,num_chunks do
    if (y_max-chunk_size+1 <= y_min) then return end
        local y0 = pr:next(y_min, y_max-chunk_size+1)
        if y0 >= height_min and y0 <= height_max then
            local x0 = pr:next(minp.x, maxp.x-chunk_size+1)
            local z0 = pr:next(minp.z, maxp.z-chunk_size+1)
            local p0 = {x=x0, y=y0, z=z0}
            for x1=0,chunk_size-1 do
            for y1=0,chunk_size-1 do
            for z1=0,chunk_size-1 do
                if pr:next(1,inverse_chance) == 1 then
                    local x2 = x0+x1
                    local y2 = y0+y1
                    local z2 = z0+z1
                    local p2 = {x=x2, y=y2, z=z2}
                    if minetest.env:get_node(p2).name == wherein then
                        minetest.env:set_node(p2, {name=name})
                    end
                end
            end
            end
            end
        end
    end
    --print("generate_ore done")
end

minetest.register_on_generated(function(minp, maxp, seed)
generate_ore("technic:mineral_diamond",        "default:stone", minp, maxp, seed+21, 1/11/11/11,    4,  -31000, -450)
generate_ore("technic:mineral_uranium",        "default:stone", minp, maxp, seed+22, 1/10/10/10,    3,  -300,   -80)
generate_ore("technic:mineral_chromium",    "default:stone", minp, maxp, seed+23, 1/10/10/10,    2,  -31000, -100)
generate_ore("technic:mineral_zinc",        "default:stone", minp, maxp, seed+24, 1/9/9/9,        4,  -31000,  2)
generate_ore("technic:marble",                "default:stone", minp, maxp, seed+25, 1/128,        20, -100,   -32)
generate_ore("technic:granite",                "default:stone", minp, maxp, seed+25, 1/128,        15, -190,   -90)
end)
minetest.register_ore({
    ore_type       = "scatter",
    ore            = "technic:mineral_diamond",
    wherein        = "default:stone",
    clust_scarcity = 11*11*11,
    clust_num_ores = 4,
    clust_size     = 3,
    height_min     = -31000,
    height_max     = -450,
})
minetest.register_ore({
    ore_type       = "scatter",
    ore            = "technic:mineral_uranium",
    wherein        = "default:stone",
    clust_scarcity = 10*10*10,
    clust_num_ores = 4,
    clust_size     = 3,
    height_min     = -300,
    height_max     = -80,
})
minetest.register_ore({
    ore_type       = "scatter",
    ore            = "technic:mineral_chromium",
    wherein        = "default:stone",
    clust_scarcity = 10*10*10,
    clust_num_ores = 2,
    clust_size     = 3,
    height_min     = -31000,
    height_max     = -100,
})
minetest.register_ore({
    ore_type       = "scatter",
    ore            = "technic:mineral_zinc",
    wherein        = "default:stone",
    clust_scarcity = 9*9*9,
    clust_num_ores = 4,
    clust_size     = 3,
    height_min     = -31000,
    height_max     = 2,
})
minetest.register_ore({
    ore_type       = "sheet",
    ore            = "technic:marble",
    wherein        = "default:stone",
    clust_scarcity = 1,
    clust_num_ores = 1,
    clust_size     = 3,
    height_min     = -150,
    height_max     = -50,
    noise_threshhold = 0.5,
    noise_params = {offset=0, scale=15, spread={x=150, y=150, z=150}, seed=23, octaves=3, persist=0.70}
})
minetest.register_ore({
    ore_type       = "sheet",
    ore            = "technic:granite",
    wherein        = "default:stone",
    clust_scarcity = 1,
    clust_num_ores = 1,
    clust_size     = 4,
    height_min     = -100,
    height_max     = -250,
    noise_threshhold = 0.5,
    noise_params = {offset=0, scale=15, spread={x=130, y=130, z=130}, seed=24, octaves=3, persist=0.70}
})