mesecons/mesecons/internal_api.lua

413 lines
8.6 KiB
Lua

-- INTERNAL API
function mesecon:is_receptor_node(nodename, pos, ownpos) --ownpos must be position of the effector/mesecon NOT of the receptor node; pos is the receptor position
local i=1
local j=1
repeat
if mesecon.pwr_srcs[i].name==nodename then
if pos==nil and ownpos==nil then --old usage still possible
return true
end
local rules=mesecon.pwr_srcs[i].rules
local node=minetest.env:get_node(pos)
if rules==nil then
rules=mesecon.pwr_srcs[i].get_rules(node.param2)
end
j=1
while rules[j]~=nil do --Check if dest. position is specified in the receptor's rules
if pos.x+rules[j].x==ownpos.x
and pos.y+rules[j].y==ownpos.y
and pos.z+rules[j].z==ownpos.z then
return true
end
j=j+1
end
end
i=i+1
until mesecon.pwr_srcs[i]==nil
return false
end
function mesecon:is_receptor_node_off(nodename, pos, ownpos) --ownpos must be position of the effector/mesecon NOT of the receptor node; pos is the receptor position
local i=1
local j=1
repeat
if mesecon.pwr_srcs_off[i].name==nodename then
if pos==nil and ownpos==nil then --old usage still possible
return true
end
local rules=mesecon.pwr_srcs_off[i].rules
local node=minetest.env:get_node(pos)
if rules==nil then
rules=mesecon.pwr_srcs_off[i].get_rules(node.param2)
end
j=1
while rules[j]~=nil do
if pos.x+rules[j].x==ownpos.x
and pos.y+rules[j].y==ownpos.y
and pos.z+rules[j].z==ownpos.z then
return true
end
j=j+1
end
end
i=i+1
until mesecon.pwr_srcs_off[i]==nil
return false
end
--Signals
function mesecon:activate(pos)
local node = minetest.env:get_node(pos)
local i = 1
repeat
i=i+1
if mesecon.actions_on[i]~=nil then mesecon.actions_on[i](pos, node)
else break
end
until false
end
function mesecon:deactivate(pos)
local node = minetest.env:get_node(pos)
local i = 1
repeat
i=i+1
if mesecon.actions_off[i]~=nil then mesecon.actions_off[i](pos, node)
else break
end
until false
end
function mesecon:changesignal(pos)
local node = minetest.env:get_node(pos)
local i = 1
repeat
i=i+1
if mesecon.actions_change[i]~=nil then mesecon.actions_change[i](pos, node)
else break
end
until false
end
--Rules
function mesecon:add_rules(name, rules)
local i=0
while mesecon.rules[i]~=nil do
i=i+1
end
mesecon.rules[i]={}
mesecon.rules[i].name=name
mesecon.rules[i].rules=rules
end
function mesecon:get_rules(name)
local i=0
while mesecon.rules[i]~=nil do
if mesecon.rules[i].name==name then
return mesecon.rules[i].rules
end
i=i+1
end
end
--Conductor system stuff
function mesecon:register_conductor(onstate, offstate)
local i=0
while mesecon.conductors[i]~=nil do
i=i+1
end
mesecon.conductors[i]={}
mesecon.conductors[i].on=onstate
mesecon.conductors[i].off=offstate
end
function mesecon:get_conductor_on(offstate)
local i=0
while mesecon.conductors[i]~=nil do
if mesecon.conductors[i].off==offstate then
return mesecon.conductors[i].on
end
i=i+1
end
return false
end
function mesecon:get_conductor_off(onstate)
local i=0
while mesecon.conductors[i]~=nil do
if mesecon.conductors[i].on==onstate then
return mesecon.conductors[i].off
end
i=i+1
end
return false
end
function mesecon:is_conductor_on(name)
local i=0
while mesecon.conductors[i]~=nil do
if mesecon.conductors[i].on==name then
return true
end
i=i+1
end
return false
end
function mesecon:is_conductor_off(name)
local i=0
while mesecon.conductors[i]~=nil do
if mesecon.conductors[i].off==name then
return true
end
i=i+1
end
return false
end
--Rules rotation Functions:
function mesecon:rotate_rules_right(rules)
local i=1
local nr={};
while rules[i]~=nil do
nr[i]={}
nr[i].z=rules[i].x
nr[i].x=-rules[i].z
nr[i].y=rules[i].y
i=i+1
end
return nr
end
function mesecon:rotate_rules_left(rules)
local i=1
local nr={};
while rules[i]~=nil do
nr[i]={}
nr[i].z=-rules[i].x
nr[i].x=rules[i].z
nr[i].y=rules[i].y
i=i+1
end
return nr
end
function mesecon:rotate_rules_down(rules)
local i=1
local nr={};
while rules[i]~=nil do
nr[i]={}
nr[i].y=rules[i].x
nr[i].x=-rules[i].y
nr[i].z=rules[i].z
i=i+1
end
return nr
end
function mesecon:rotate_rules_up(rules)
local i=1
local nr={};
while rules[i]~=nil do
nr[i]={}
nr[i].y=-rules[i].x
nr[i].x=rules[i].y
nr[i].z=rules[i].z
i=i+1
end
return nr
end
function mesecon:is_power_on(pos)
local node = minetest.env:get_node(pos)
if mesecon:is_conductor_on(node.name) or mesecon:is_receptor_node(node.name) then
return true
end
return false
end
function mesecon:is_power_off(pos)
local node = minetest.env:get_node(pos)
if mesecon:is_conductor_off(node.name) or mesecon:is_receptor_node_off(node.name) then
return 1
end
return 0
end
function mesecon:turnon(p, x, y, z, firstcall, rules)
if rules==nil then
rules=mesecon:get_rules("default")
end
local lpos = {}
lpos.x=p.x+x
lpos.y=p.y+y
lpos.z=p.z+z
mesecon:changesignal(lpos)
mesecon:activate(lpos)
local node = minetest.env:get_node(lpos)
if mesecon:is_conductor_off(node.name) then
minetest.env:add_node(lpos, {name=mesecon:get_conductor_on(node.name)})
nodeupdate(lpos)
end
if mesecon:is_conductor_off(node.name) or firstcall then
local i=1
while rules[i]~=nil do
mesecon:turnon(lpos, rules[i].x, rules[i].y, rules[i].z, false)
i=i+1
end
end
end
function mesecon:turnoff(pos, x, y, z, firstcall, rules)
if rules==nil then
rules=mesecon:get_rules("default")
end
local lpos = {}
lpos.x=pos.x+x
lpos.y=pos.y+y
lpos.z=pos.z+z
local node = minetest.env:get_node(lpos)
local connected = 0
local checked = {}
--Send Signals to effectors:
mesecon:changesignal(lpos)
if not mesecon:check_if_turnon(lpos) then
mesecon:deactivate(lpos)
end
if not(firstcall) and connected==0 then
connected=mesecon:connected_to_pw_src(lpos, 0, 0, 0, checked)
end
if connected == 0 and mesecon:is_conductor_on(node.name) then
--minetest.env:remove_node(lpos)
minetest.env:add_node(lpos, {name=mesecon:get_conductor_off(node.name)})
nodeupdate(lpos)
end
if mesecon:is_conductor_on(node.name) or firstcall then
if connected == 0 then
local i=1
while rules[i]~=nil do
mesecon:turnoff(lpos, rules[i].x, rules[i].y, rules[i].z, false)
i=i+1
end
end
end
end
function mesecon:connected_to_pw_src(pos, x, y, z, checked, firstcall)
local i=1
local lpos = {}
lpos.x=pos.x+x
lpos.y=pos.y+y
lpos.z=pos.z+z
local node = minetest.env:get_node_or_nil(lpos)
if not(node==nil) then
repeat
i=i+1
if checked[i]==nil then checked[i]={} break end
if checked[i].x==lpos.x and checked[i].y==lpos.y and checked[i].z==lpos.z then
return 0
end
until false
checked[i].x=lpos.x
checked[i].y=lpos.y
checked[i].z=lpos.z
if mesecon:is_receptor_node(node.name, lpos, pos) == true then -- receptor nodes (power sources) can be added using mesecon:add_receptor_node
return 1
end
if mesecon:is_conductor_on(node.name) or firstcall then -- add other conductors here
local pw_source_found=0
local rules=mesecon:get_rules("default")
local i=1
while rules[i]~=nil do
pw_source_found=pw_source_found+mesecon:connected_to_pw_src(lpos, rules[i].x, rules[i].y, rules[i].z, checked, false)
i=i+1
end
if pw_source_found > 0 then
return 1
end
end
end
return 0
end
function mesecon:check_if_turnon(pos)
local i=1
local j=1
local k=1
local rcpt
local rcpt_pos={}
local rules
rules=mesecon:get_rules("default") --Power form a on-conductor
while rules[k]~=nil do
if mesecon:is_conductor_on(minetest.env:get_node({x=pos.x+rules[k].x, y=pos.y+rules[k].y, z=pos.z+rules[k].z}).name) then
return true
end
k=k+1
end
while mesecon.rules[i]~=nil do --Power from a receptor
j=1
while mesecon.rules[i].rules[j]~=nil do
rcpt_pos={x=pos.x-mesecon.rules[i].rules[j].x, y=pos.y-mesecon.rules[i].rules[j].y, z=pos.z-mesecon.rules[i].rules[j].z}
rcpt=minetest.env:get_node(rcpt_pos)
if mesecon:is_receptor_node(rcpt.name, rcpt_pos, pos) then
return true
end
j=j+1
end
i=i+1
end
return false
end
function mesecon:updatenode(pos)
if mesecon:connected_to_pw_src(pos, 0, 0, 0, {}) then
mesecon:turnon(pos, 0, 0, 0)
else
mesecon:turnoff(pos, 0, 0, 0)
end
end
minetest.register_on_placenode(function(pos, newnode, placer)
if mesecon:check_if_turnon(pos) then
if mesecon:is_conductor_off(newnode.name) then
mesecon:turnon(pos, 0, 0, 0)
else
mesecon:changesignal(pos)
mesecon:activate(pos)
end
end
end)
minetest.register_on_dignode(
function(pos, oldnode, digger)
if mesecon:is_conductor_on(oldnode.name) then
mesecon:turnoff(pos, 0, 0, 0, true)
end
end
)