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avoid trivial fences, open some fence gates

This commit is contained in:
kno10 2024-10-28 23:51:11 +01:00
parent 73a303ac83
commit 304b83d7ac
1 changed files with 65 additions and 18 deletions
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83
mods/ENTITIES/mcl_mobs/pathfinding.lua
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@ -69,38 +69,27 @@ end
-- an action, such as to open or close a door where we know that pos requires that action
local function generate_enriched_path(wp_in, door_open_pos, door_close_pos, cur_door_pos)
local wp_out = {}
-- TODO Just pass in door position and the index before is open, the index after is close
local current_door_index = -1
for i, cur_pos in pairs(wp_in) do
local action = nil
local cur_pos_to_add -- = vector.add(cur_pos, one_down)
if door_open_pos and vector.equals (cur_pos, door_open_pos) then
if door_open_pos and vector.equals(cur_pos, door_open_pos) then
mcl_log ("Door open match")
action = {type = "door", action = "open", target = cur_door_pos}
cur_pos_to_add = vector.add(cur_pos, one_down)
elseif door_close_pos and vector.equals(cur_pos, door_close_pos) then
mcl_log ("Door close match")
action = {type = "door", action = "close", target = cur_door_pos}
cur_pos_to_add = vector.add(cur_pos, one_down)
elseif cur_door_pos and vector.equals(cur_pos, cur_door_pos) then
mcl_log("Current door pos")
action = {type = "door", action = "open", target = cur_door_pos}
cur_pos_to_add = vector.add(cur_pos, one_down)
else
cur_pos_to_add = cur_pos
--mcl_log ("Pos doesn't match")
end
if visualize then
core.add_particle({pos = cur_pos_to_add, expirationtime=5+i/4, size=3+2/i, velocity=vector.new(0,-0.01,0),
core.add_particle({pos = cur_pos, expirationtime=5+i/4, size=3+2/i, velocity=vector.new(0,-0.01,0),
texture="mcl_copper_anti_oxidation_particle.png"}) -- white stars
end
wp_out[i] = {}
wp_out[i]["pos"] = cur_pos_to_add
wp_out[i]["pos"] = cur_pos
wp_out[i]["failed_attempts"] = 0
wp_out[i]["action"] = action
@ -207,7 +196,8 @@ local function is_solid(pos)
end
local function find_open_node(pos, radius)
if not is_solid(pos) then return pos end
local r = vector.round(pos)
if not is_solid(r) then return r end
local above = vector.offset(pos, 0, 1, 0)
if not is_solid(above) then return above, true end -- additional return: drop last
local n = minetest.find_node_near(pos, radius or 1, {"air"})
@ -225,7 +215,7 @@ function mob_class:gopath(target, callback_arrived, prioritised)
-- maybe feet are buried in solid?
local start = self.object:get_pos()
local p = find_open_node(vector.round(start), 1)
local p = find_open_node(start, 1)
if not p then -- buried?
minetest.log("action", "Cannot path from "..minetest.pos_to_string(start).." because it is solid. Nodetype: "..minetest.get_node(start).name)
return
@ -297,6 +287,53 @@ function mob_class:gopath(target, callback_arrived, prioritised)
-- If cannot path, don't immediately try again
end
-- todo: we would also need to avoid overhangs, but minetest.find_path cannot help us there
-- we really need a better pathfinder overall.
-- try to find a way around fences and walls. This is very barebones, but at least it should
-- help path around very simple fences *IF* there is a detour that does not require jumping or gates.
if wp and #wp > 0 then
local i = 1
while i < #wp do
-- fence or wall underneath?
local bdef = minetest.registered_nodes[minetest.get_node(vector.offset(wp[i].pos, 0, -1, 0)).name]
if not bdef then minetest.log("warning", "There must not be unknown nodes on path") end
-- plan opening fence gates
if bdef and (bdef.groups.fence_gate or 0) > 0 then
wp[i].pos = vector.offset(wp[i].pos, 0, -1, 0)
wp[math.max(1,i-1)].action = {type = "door", action = "open", target = wp[i].pos}
if i+1 < #wp then
wp[i+1].action = {type = "door", action = "close", target = wp[i].pos}
end
-- do not jump on fences and walls, but try to walk around
elseif bdef and i > 1 and ((bdef.groups.fence or 0) > 0 or (bdef.groups.wall or 0) > 0) and wp[i].pos.y > wp[i-1].pos.y then
-- find end of wall(s)
local j = i + 1
while j <= #wp do
local below = vector.offset(wp[j].pos, 0, -1, 0)
local bdef = minetest.registered_nodes[minetest.get_node(below).name]
if not bdef or ((bdef.groups.fence or 0) == 0 and (bdef.groups.wall or 0) == 0) then
break
end
j = j + 1
end
minetest.log("warning", bdef.name .. " at "..tostring(i).." end at "..(j <= #wp and tostring(j) or "nil"))
if j <= #wp and wp[i-1].pos.y == wp[j].pos.y then
local swp = minetest.find_path(wp[i-1].pos, wp[j].pos, PATHFINDING_SEARCH_DISTANCE, 0, 0)
-- TODO: if we do not find a path here, consider pathing through a fence gate!
if swp and #swp > 0 then
for k = j-1,i,-1 do table.remove(wp, k) end
for k = 2, #swp-1 do table.insert(wp, i-2+k, {pos = swp[k], failed_attempts = 0}) end
minetest.log("warning", "Monkey patch pathfinding around "..bdef.name.." successful.")
i = i + #swp - 4
else
minetest.log("warning", "Monkey patch pathfinding around "..bdef.name.." failed.")
end
end
end
i = i + 1
end
end
if wp and #wp > 0 then
--output_table(wp)
if drop_last_wp and #wp > 1 then table.remove(wp, #wp) end
@ -337,11 +374,21 @@ function mob_class:interact_with_door(action, target)
if closed and action == "open" and def.on_rightclick then
mcl_log("Open door")
def.on_rightclick(target,n,self)
end
if not closed and action == "close" and def.on_rightclick then
elseif not closed and action == "close" and def.on_rightclick then
mcl_log("Close door")
def.on_rightclick(target,n,self)
end
elseif n.name:find("_gate") then
local def = minetest.registered_nodes[n.name]
local meta = minetest.get_meta(target)
local closed = meta:get_int("state") == 0
if closed and action == "open" and def.on_rightclick then
mcl_log("Open gate")
def.on_rightclick(target,n,self)
elseif not closed and action == "close" and def.on_rightclick then
mcl_log("Close gate")
def.on_rightclick(target,n,self)
end
else
mcl_log("Not door")
end