Support powering of opaque blocks (WIP)

mods/ITEMS/REDSTONE/mesecons/init.lua

@@ -81,6 +81,13 @@ mesecon.queue:add_function("receptor_on", function (pos, rules)
 		for _, rulename in ipairs(rulenames) do
 			mesecon.turnon(np, rulename)
 		end
+		if rule.spread then
+			if minetest.get_item_group(minetest.get_node(np).name, "opaque") == 1 then
+				for _, neighbor in ipairs(mesecon.mcl_get_neighbors(np)) do
+					mesecon.turnon(neighbor.pos, vector.add(rule, neighbor.link))
+				end
+			end
+		end
 	end
 
 	mesecon.vm_commit()
@@ -110,6 +117,19 @@ mesecon.queue:add_function("receptor_off", function (pos, rules)
 				mesecon.vm_abort()
 			end
 		end
+		if rule.spread then
+			if minetest.get_item_group(minetest.get_node(np).name, "opaque") == 1 then
+				for _, neighbor in ipairs(mesecon.mcl_get_neighbors(np)) do
+					mesecon.vm_begin()
+					mesecon.changesignal(neighbor.pos, minetest.get_node(neighbor.pos), vector.add(rule, neighbor.link), mesecon.state.off, 2)
+					if (mesecon.turnoff(neighbor.pos, vector.add(rule, neighbor.link))) then
+						mesecon.vm_commit()
+					else
+						mesecon.vm_abort()
+					end
+				end
+			end
+		end
 	end
 end)
 

mods/ITEMS/REDSTONE/mesecons/internal.lua

@@ -398,6 +398,7 @@ function mesecon.turnon(pos, link)
 				mesecon.activate(f.pos, node, f.link, depth)
 			end
 		end
+
 		depth = depth + 1
 	end
 end
@@ -557,7 +558,8 @@ function mesecon.rotate_rules_right(rules)
 			x = -rule.z,
 			y =  rule.y,
 			z =  rule.x,
-			name = rule.name})
+			name = rule.name,
+			spread = rule.spread,})
 	end
 	return nr
 end
@@ -569,7 +571,8 @@ function mesecon.rotate_rules_left(rules)
 			x =  rule.z,
 			y =  rule.y,
 			z = -rule.x,
-			name = rule.name})
+			name = rule.name,
+			spread = rule.spread,})
 	end
 	return nr
 end
@@ -581,7 +584,8 @@ function mesecon.rotate_rules_down(rules)
 			x = -rule.y,
 			y =  rule.x,
 			z =  rule.z,
-			name = rule.name})
+			name = rule.name,
+			spread = rule.spread,})
 	end
 	return nr
 end
@@ -593,7 +597,8 @@ function mesecon.rotate_rules_up(rules)
 			x =  rule.y,
 			y = -rule.x,
 			z =  rule.z,
-			name = rule.name})
+			name = rule.name,
+			spread = rule.spread,})
 	end
 	return nr
 end

mods/ITEMS/REDSTONE/mesecons/presets.lua

@@ -6,6 +6,9 @@ mesecon.rules.default =
  {x=1,  y=0,  z=0},
  {x=-1, y=0,  z=0},
  {x=0,  y=0,  z=1},
+ {x=0,  y=1,  z=0},
+ {x=0,  y=-1, z=0},
+
  {x=1,  y=1,  z=0},
  {x=1,  y=-1, z=0},
  {x=-1, y=1,  z=0},
@@ -16,6 +19,37 @@ mesecon.rules.default =
  {x=0,  y=-1, z=-1}}
 
 mesecon.rules.alldirs =
+{{x= 1, y= 0,  z= 0, spread = true},
+ {x=-1, y= 0,  z= 0, spread = true},
+ {x= 0, y= 1,  z= 0, spread = true},
+ {x= 0, y=-1,  z= 0, spread = true},
+ {x= 0, y= 0,  z= 1, spread = true},
+ {x= 0, y= 0,  z=-1, spread = true}}
+
+mesecon.rules.pplate =
+{{x = 1,  y = 0, z = 0},
+ {x =-1,  y = 0, z = 0},
+ {x = 0,  y = 1, z = 0},
+ {x = 0,  y =-1, z = 0, spread = true},
+ {x = 0,  y = 0, z = 1},
+ {x = 0,  y = 0, z =-1}}
+
+mesecon.rules.buttonlike =
+{{x = 0,  y = 0, z =-1},
+ {x = 0,  y = 0, z = 1},
+ {x = 0,  y =-1, z = 0},
+ {x = 0,  y = 1, z = 0},
+ {x =-1,  y = 0, z = 0},
+ {x = 1,  y = 0, z = 0, spread = true}}
+
+mesecon.rules.flat =
+{{x = 1, y = 0, z = 0},
+ {x =-1, y = 0, z = 0},
+ {x = 0, y = 0, z = 1},
+ {x = 0, y = 0, z =-1}}
+
+-- NOT IN ORIGNAL MESECONS
+mesecon.rules.mcl_alldirs_short =
 {{x= 1, y= 0,  z= 0},
  {x=-1, y= 0,  z= 0},
  {x= 0, y= 1,  z= 0},
@@ -23,41 +57,7 @@ mesecon.rules.alldirs =
  {x= 0, y= 0,  z= 1},
  {x= 0, y= 0,  z=-1}}
 
-mesecon.rules.pplate =
+-- END OF UNOFFICIAL RULES
-{{x = 1,  y = 0, z = 0},
- {x =-1,  y = 0, z = 0},
- {x = 0,  y = 1, z = 0},
- {x = 0,  y =-1, z = 0},
- {x = 0,  y = 0, z = 1},
- {x = 0,  y = 0, z =-1},
- {x = 0,  y = -2, z = 0},
- {x = 1,  y = -1, z = 0},
- {x =-1,  y = -1, z = 0},
- {x = 0,  y = -1, z = 1},
- {x = 0,  y = -1, z =-1}}
-
-mesecon.rules.buttonlike =
-{{x = 1,  y = 0, z = 0},
- {x = 1,  y = 1, z = 0},
- {x = 1,  y =-1, z = 0},
- {x = 1,  y = 0, z =-1},
- {x = 1,  y = 0, z = 1},
- {x = 2,  y = 0, z = 0},
- {x = 0,  y =  1, z = 0},
- {x = 0,  y = -1, z = 0},
- {x =-1,  y =  0, z = 0},
- {x = 0,  y =  0, z = 1},
- {x = 0,  y =  0, z =-1}}
-
-mesecon.rules.flat =
-{{x = 1, y = 0, z = 0},
- {x =-1, y = 0, z = 0},
- {x = 0, y = 0, z = 1},
- {x = 0, y = 0, z =-1},
- {x = 2, y = 0, z = 0},
- {x =-2, y = 0, z = 0},
- {x = 0, y = 0, z = 2},
- {x = 0, y = 0, z =-2}}
 
 mesecon.rules.buttonlike_get = function(node)
 	local rules = mesecon.rules.buttonlike

mods/ITEMS/REDSTONE/mesecons/util.lua

@@ -90,6 +90,25 @@ function mesecon.rule2meta(findrule, allrules)
 	return allrules[index]
 end
 
+-- Returns the 6 immediate neighbors of pos
+-- (nodes which touch the sides of pos).
+-- NOT PART OF ORIGINAL MESECONS!
+function mesecon.mcl_get_neighbors(pos)
+	local r = {
+		{ x= 0, y= 0, z=-1 },
+		{ x= 0, y= 0, z= 1 },
+		{ x= 0, y=-1, z= 0 },
+		{ x= 0, y= 1, z= 0 },
+		{ x=-1, y= 0, z= 0 },
+		{ x= 1, y= 0, z= 0 },
+	}
+	local e = {}
+	for i=1, #r do
+		table.insert(e, { pos = vector.add(pos, r[i]), link = r[i] })
+	end
+	return e
+end
+
 function mesecon.dec2bin(n)
 	local x, y = math.floor(n / 2), n % 2
 	if (n > 1) then