made huts solid

huts.lua

@@ -9,6 +9,113 @@
 
 -- HUTS
 
+
+local mt_buildings_place_hut = function(pos, param2)
+	-- get the position where the schematic shall be placed
+	local p = {x=pos.x, y=pos.y+1, z=pos.z}
+	if(param2%2 == 1) then
+		p.x = p.x - 3
+		p.z = p.z - 4
+	else
+		p.x = p.x - 4
+		p.z = p.z - 3
+	end
+	-- all huts share the same shape and thus the same schematic
+	local file_name = minetest.get_modpath("mt_buildings").."/schems/hut_shape_0_0.mts"
+	-- the original hut has been built for param2 == 1; translate that to our rotation
+	local rotation = tostring(90*((param2+3)%4))
+	-- place the schematic, but do not replace existing nodes
+	minetest.place_schematic(p, file_name, rotation, {}, false)
+
+end
+
+
+-- try to place hut and invisible walls if possible
+local mt_buildings_on_place = function(itemstack, placer, pointed_thing)
+	if( not(placer) or not(pointed_thing) or not(placer:is_player())) then
+		return itemstack -- nothing consumed
+	end
+	local pname = placer:get_player_name();
+
+	local pos  = minetest.get_pointed_thing_position( pointed_thing, under );
+	local node = minetest.get_node_or_nil( pos );
+
+	-- the node containing the hut's mesh is placed a bit higher, where it is less of an obstacle
+	local target_pos = {x=pos.x, y=pos.y + 6, z=pos.z}
+	local target_node = minetest.get_node_or_nil(target_pos)
+	if(target_node and target_node.name ~= "air") then
+		minetest.chat_send_player( pname, "There is not enough vertical space for this hut.")
+		return itemstack -- nothing consumed
+	end
+
+	if(( minetest.is_protected(pos,        pname)
+	  or minetest.is_protected(target_pos, pname))
+	  and not(minetest.check_player_privs(pname, "protection_bypass"))) then
+		minetest.chat_send_player( pname, "This area is protected.")
+		return itemstack -- nothing consumed
+	end
+	-- determine param2
+	local dir = minetest.dir_to_facedir(placer:get_look_dir())
+	-- all ok - we may proceed
+	-- actually place the node containing the hut
+	minetest.set_node(target_pos, {name = itemstack:get_name(), param2 = dir})
+	-- get the position where the schematic shall be placed
+	local p = {x=pos.x, y=pos.y+1, z=pos.z}
+	-- actually place the hut
+	mt_buildings_place_hut(pos, dir)
+
+	local meta = minetest.get_meta(target_pos)
+	-- give the player a hint that this is the node he needs to dig in order to remove
+	-- the hut
+	meta:set_string("infotext","Hut support node. Dig in order to remove this hut that was placed by "..pname..". Right-click in order to fix broken walls.")
+
+	-- consume one hut node item
+	return itemstack:take_item()
+end
+
+
+-- manually fix holes in the wall after player has built the interior
+local mt_buildings_on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+	local node = minetest.get_node(pos)
+	if(not(node)) then
+		return
+	end
+	mt_buildings_place_hut({x=pos.x, y=pos.y-5, z=pos.z}, node.param2)
+end
+
+
+-- It is not sufficient to remove the hut node as such. The nodes that make players collide
+-- with the hut walls and roof need to be removed as well.
+local mt_buildings_remove_hut = function(pos)
+	local node = minetest.get_node(pos)
+	if(not(node)) then
+		return
+	end
+	-- the hut control node is sitting on top of the hut
+	local p = {x=pos.x, y=pos.y-6, z=pos.z}
+	local p_end = {x=p.x, y = p.y + 6, z = p.z}
+	-- the hut may be rotated
+	if(node.param2%2 == 1) then
+		p.x = p.x - 3
+		p.z = p.z - 4
+		p_end.x = p_end.x + 3
+		p_end.z = p_end.z + 4
+	else
+		p.x = p.x - 4
+		p.z = p.z - 3
+		p_end.x = p_end.x + 4
+		p_end.z = p_end.z + 3
+	end
+	-- remove the wall construction nodes
+	local n_pos = minetest.find_nodes_in_area(p, p_end, {"group:mt_buildings_invisible_wall"}, false)
+	for _, np in ipairs(n_pos) do
+		minetest.set_node(np, {name="air"})
+	end
+end
+
+
+-- actual node registration
+
 minetest.register_node("mt_buildings:hut01", {
   description = "Gun Shop",
   drawtype = "mesh",
@@ -21,9 +128,18 @@ minetest.register_node("mt_buildings:hut01", {
   paramtype = "light",
   paramtype2 = "facedir",
   groups = {choppy=2, oddly_breakable_by_hand=2, flammable=3},
-  on_place = minetest.rotate_node,
-    collisionbox = {-1.5, -0.5, -1.5, 1.5, 1.5, 1.5},
 
+	collisionbox = {-0.5,  0.0, -0.5, 0.5, 0.5, 0.5},
+	-- place the nodes that prevent players from walking through walls
+	on_place = mt_buildings_on_place,
+	-- if the player broke some invisible walls by building something, he can
+	-- restore those walls automaticly
+	on_rightclick = mt_buildings_on_rightclick,
+	-- remove said nodes again when the hut is destructed
+	on_destruct = mt_buildings_remove_hut,
+	-- forbid rotation with a screwdriver (because adding support for rotating
+	-- the invisible wall nodes as well would be too much work for too little gain)
+	on_rotate = false,
 })
 
 minetest.register_node("mt_buildings:hut02", {
@@ -38,10 +154,12 @@ minetest.register_node("mt_buildings:hut02", {
   paramtype = "light",
   paramtype2 = "facedir",
   groups = {choppy=2, oddly_breakable_by_hand=2, flammable=3},
-  on_place = minetest.rotate_node,
-    selectionbox = {-1.0, -0.5, -1.5, 1.5, 1.5, 1.5},
-    collisionbox = {-1.5, -0.5, -1.5, 1.5, 1.5, 1.5},
 
+	collisionbox = {-0.5,  0.0, -0.5, 0.5, 0.5, 0.5},
+	on_place = mt_buildings_on_place,
+	on_rightclick = mt_buildings_on_rightclick,
+	on_destruct = mt_buildings_remove_hut,
+	on_rotate = false,
 })
 
 minetest.register_node("mt_buildings:hut03", {
@@ -56,10 +174,12 @@ minetest.register_node("mt_buildings:hut03", {
   paramtype = "light",
   paramtype2 = "facedir",
   groups = {choppy=2, oddly_breakable_by_hand=2, flammable=3},
-  on_place = minetest.rotate_node,
-    selectionbox = {-1.5, -0.5, -1.5, 1.5, 1.5, 1.5},
-    collisionbox = {-1.5, -0.5, -1.5, 1.5, 1.5, 1.5},
 
+	collisionbox = {-0.5,  0.0, -0.5, 0.5, 0.5, 0.5},
+	on_place = mt_buildings_on_place,
+	on_rightclick = mt_buildings_on_rightclick,
+	on_destruct = mt_buildings_remove_hut,
+	on_rotate = false,
 })
 
 minetest.register_node("mt_buildings:hut04", {
@@ -74,10 +194,12 @@ minetest.register_node("mt_buildings:hut04", {
   paramtype = "light",
   paramtype2 = "facedir",
   groups = {choppy=2, oddly_breakable_by_hand=2, flammable=3},
-  on_place = minetest.rotate_node,
-    selectionbox = {-1.5, -0.5, -1.5, 1.5, 1.5, 1.5},
-    collisionbox = {-1.5, -0.5, -1.5, 1.5, 1.5, 1.5},
 
+	collisionbox = {-0.5,  0.0, -0.5, 0.5, 0.5, 0.5},
+	on_place = mt_buildings_on_place,
+	on_rightclick = mt_buildings_on_rightclick,
+	on_destruct = mt_buildings_remove_hut,
+	on_rotate = false,
 })
 
   -- TOTEM_CRAFT