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#362 Cover world edges by mapgen API

This commit is contained in:
kay27 2022-07-10 17:15:30 +03:00
parent 01b2f65309
commit 3bc3540ead
1 changed files with 40 additions and 8 deletions
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48
mods/CORE/mcl_mapgen/init.lua
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@ -148,16 +148,48 @@ local chunk_scan_range = {
[ CS_NODES] = {LAST_BLOCK+1, LAST_BLOCK+1},
}
local EDGE_MIN = mcl_mapgen.EDGE_MIN
local EDGE_MAX = mcl_mapgen.EDGE_MAX
local function is_chunk_finished(minp)
local center = vector.add(minp, HALF_CS_NODES)
for check_x = center.x - CS_NODES, center.x + CS_NODES, CS_NODES do
for check_y = center.y - CS_NODES, center.y + CS_NODES, CS_NODES do
for check_z = center.z - CS_NODES, center.z + CS_NODES, CS_NODES do
local pos = vector.new(check_x, check_y, check_z)
if pos ~= center then
minetest_get_voxel_manip():read_from_map(pos, pos)
local node = minetest_get_node(pos)
local center_x = minp.x + HALF_CS_NODES
local center_y = minp.y + HALF_CS_NODES
local center_z = minp.z + HALF_CS_NODES
local from_x = center_x - CS_NODES
local from_y = center_y - CS_NODES
local from_z = center_z - CS_NODES
local to_x = center_x + CS_NODES
local to_y = center_y + CS_NODES
local to_z = center_z + CS_NODES
if from_x < EDGE_MIN then from_x = center_x end
if from_y < EDGE_MIN then from_y = center_y end
if from_z < EDGE_MIN then from_z = center_z end
if to_x > EDGE_MAX then to_x = center_x end
if to_y > EDGE_MAX then to_y = center_y end
if to_z > EDGE_MAX then to_z = center_z end
for check_x = from_x, to_x, CS_NODES do
local are_we_in_central_chunk = check_x == center_x
for check_y = from_y, to_y, CS_NODES do
are_we_in_central_chunk = are_we_in_central_chunk and (check_y == center_y)
for check_z = from_z, to_z, CS_NODES do
are_we_in_central_chunk = are_we_in_central_chunk and (check_z == center_z)
if not are_we_in_central_chunk then
local check_pos = {x = check_x, y = check_y, z = check_z}
minetest_get_voxel_manip():read_from_map(check_pos, check_pos)
local node = minetest_get_node(check_pos)
if node.name == "ignore" then
-- return nil, means false, means, there is something to generate still,
-- (because one of adjanced chucks is unfinished - "ignore" means that),
-- means this chunk will be changed, at least one of its sides or corners
-- means it's unsafe to place anything there right now, it might disappar,
-- better to wait, see the diagram of conflict/ok areas per a single axis:
-- conflict| ok |conflict|conflict| ok |conflict|conflict| ok |conflict
-- (_________Chunk1_________)|(_________Chunk2_________)|(_________Chunk3_________)
-- [Block1]|[MidBlk]|[BlockN]|[Block1]|[MidBlk]|[BlockN]|[Block1]|[MidBlk]|[BlockN]
-- \_____________Chunk2-with-shell____________/
-- ...______Chunk1-with-shell________/ \________Chunk3-with-shell______...
-- Generation of chunk 1 AFFECTS 2 ^^^ ^^^ Generation of chunk 3 affects 2
-- ^^^^^^^^Chunk 2 gen. affects 1 and 3^^^^^^^^
return
end
end