handle interactions w/ explosions (#3)

* don't let explosions destroy sign entities

* destroy sign entities if sign node is exploded

* remove redundant destructor call

* make sure other things don't try to interact w/ the signs entity

* name will be "" for non-players or unknown players.

* remove default value from initial values

---------

Co-authored-by: Niklp <89982526+Niklp09@users.noreply.github.com>

display_api/display.lua

@@ -251,6 +251,15 @@ function display_api.on_destruct(pos)
 	end
 end
 
+function display_api.on_blast(pos, intensity)
+	if not minetest.is_protected(pos, "") then
+		local node = minetest.get_node(pos)
+		local drops = minetest.get_node_drops(node, "tnt:blast")
+		minetest.remove_node(pos)
+		return drops
+	end
+end
+
 -- On_rotate (screwdriver) callback for display_api items. Prevents invalid
 -- rotations and reorients entities.
 function display_api.on_rotate(pos, node, user, _, new_param2)
@@ -272,12 +281,17 @@ function display_api.register_display_entity(entity_name)
 			initial_properties = {
 				collisionbox = {0, 0, 0, 0, 0, 0},
 				visual = "upright_sprite",
-				textures = {}
+				textures = {},
+				collide_with_objects = false,
+				pointable = false
 			},
 			on_activate = display_api.on_activate,
 			get_staticdata = function(self)
 				return minetest.serialize({ nodepos = self.nodepos })
 			end,
+			on_blast = function(self, damage)
+				return false, false, {}
+			end,
 		})
 	end
 end

ontime_clocks/nodes.lua

@@ -59,6 +59,7 @@ minetest.register_node("ontime_clocks:green_digital", {
 	on_place = display_api.on_place,
 	on_construct = clock_on_construct,
 	on_destruct = display_api.on_destruct,
+	on_blast = display_api.on_blast,
 	on_rotate = display_api.on_rotate,
 	on_timer = clock_on_timer,
 })
@@ -92,6 +93,7 @@ minetest.register_node("ontime_clocks:red_digital", {
 	on_place = display_api.on_place,
 	on_construct = clock_on_construct,
 	on_destruct = display_api.on_destruct,
+	on_blast = display_api.on_blast,
 	on_rotate = display_api.on_rotate,
 	on_timer = clock_on_timer,
 })
@@ -124,6 +126,7 @@ minetest.register_node("ontime_clocks:white", {
 	on_place = display_api.on_place,
 	on_construct = clock_on_construct,
 	on_destruct = display_api.on_destruct,
+	on_blast = display_api.on_blast,
 	on_rotate = display_api.on_rotate,
 	on_timer = clock_on_timer,
 })
@@ -156,6 +159,7 @@ minetest.register_node("ontime_clocks:frameless_black", {
 	on_place = display_api.on_place,
 	on_construct = clock_on_construct,
 	on_destruct = display_api.on_destruct,
+	on_blast = display_api.on_blast,
 	on_rotate = display_api.on_rotate,
 	on_timer = clock_on_timer,
 })
@@ -188,6 +192,7 @@ minetest.register_node("ontime_clocks:frameless_gold", {
 	on_place = display_api.on_place,
 	on_construct = clock_on_construct,
 	on_destruct = display_api.on_destruct,
+	on_blast = display_api.on_blast,
 	on_rotate = display_api.on_rotate,
 	on_timer = clock_on_timer,
 })
@@ -220,6 +225,7 @@ minetest.register_node("ontime_clocks:frameless_white", {
 	on_place = display_api.on_place,
 	on_construct = clock_on_construct,
 	on_destruct = display_api.on_destruct,
+	on_blast = display_api.on_blast,
 	on_rotate = display_api.on_rotate,
 	on_timer = clock_on_timer,
 })

signs/compatibility.lua

@@ -61,6 +61,11 @@ minetest.register_lbm({ name = "signs:conpatibility_1",
 -- We need to have this entity registered to be able to remove it.
 if minetest.registered_entities["signs:text"] == nil then
 	minetest.register_entity("signs:text", {
+		on_activate = function(self)
+			if self.object then
+				self.object:remove()
+			end
+		end,
 		initial_properties = {
 			collisionbox = {0, 0, 0, 0, 0, 0},
 			visual = "upright_sprite",

signs_api/init.lua

@@ -192,6 +192,7 @@ function signs_api.register_sign(mod, name, model)
 				display_api.on_construct(pos)
 			end,
 		on_destruct = display_api.on_destruct,
+		on_blast = display_api.on_blast,
 		on_rotate = signs_api.on_rotate,
 		on_receive_fields =  signs_api.on_receive_fields,
 		on_punch = function(pos, node, player, pointed_thing)

steles/nodes.lua

@@ -83,6 +83,7 @@ for i, material in ipairs(steles.materials) do
 					set_formspec(pos)
 				end,
 			on_destruct = display_api.on_destruct,
+			on_blast = display_api.on_blast,
 			on_rotate = display_api.on_rotate,
 			on_receive_fields = function(pos, formname, fields, player)
 					if not minetest.is_protected(pos, player:get_player_name()) then