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