Add permit_build command

This commit separates permission to build from building mode, allowing
build to become a NoAdmin command (since players will first need
permission from an Admin to enter build mode)

common/src/cmd.rs

@@ -68,6 +68,7 @@ pub enum ChatCommand {
     MakeSprite,
     Motd,
     Object,
+    PermitBuild,
     Players,
     Region,
     RemoveLights,
@@ -122,6 +123,7 @@ pub static CHAT_COMMANDS: &[ChatCommand] = &[
     ChatCommand::MakeSprite,
     ChatCommand::Motd,
     ChatCommand::Object,
+    ChatCommand::PermitBuild,
     ChatCommand::Players,
     ChatCommand::Region,
     ChatCommand::RemoveLights,
@@ -235,7 +237,7 @@ impl ChatCommand {
                 "Ban a player with a given username",
                 Admin,
             ),
-            ChatCommand::Build => cmd(vec![], "Toggles build mode on and off", Admin),
+            ChatCommand::Build => cmd(vec![], "Toggles build mode on and off", NoAdmin),
             ChatCommand::Campfire => cmd(vec![], "Spawns a campfire", Admin),
             ChatCommand::Debug => cmd(vec![], "Place all debug items into your pack.", Admin),
             ChatCommand::DebugColumn => cmd(
@@ -368,6 +370,19 @@ impl ChatCommand {
                 "Spawn an object",
                 Admin,
             ),
+            ChatCommand::PermitBuild => cmd(
+                vec![
+                    PlayerName(Required),
+                    Integer("xlo", 0, Required),
+                    Integer("xhi", 10, Required),
+                    Integer("ylo", 0, Required),
+                    Integer("yhi", 10, Required),
+                    Integer("ylo", 0, Required),
+                    Integer("yhi", 10, Required),
+                ],
+                "Grants player a bounded box they can build in",
+                Admin,
+            ),
             ChatCommand::Players => cmd(vec![], "Lists players currently online", NoAdmin),
             ChatCommand::RemoveLights => cmd(
                 vec![Float("radius", 20.0, Optional)],
@@ -488,6 +503,7 @@ impl ChatCommand {
             ChatCommand::MakeSprite => "make_sprite",
             ChatCommand::Motd => "motd",
             ChatCommand::Object => "object",
+            ChatCommand::PermitBuild => "permit_build",
             ChatCommand::Players => "players",
             ChatCommand::Region => "region",
             ChatCommand::RemoveLights => "remove_lights",

common/src/comp/inputs.rs

@@ -1,8 +1,11 @@
 use serde::{Deserialize, Serialize};
-use specs::{Component, DerefFlaggedStorage, NullStorage};
+use specs::{Component, DerefFlaggedStorage};
+use specs_idvs::IdvStorage;
 
 #[derive(Clone, Debug, Default, PartialEq, Serialize, Deserialize)]
-pub struct CanBuild;
-impl Component for CanBuild {
-    type Storage = DerefFlaggedStorage<Self, NullStorage<Self>>;
+pub struct CanBuild {
+    pub building_is_on: bool,
+}
+impl Component for CanBuild {
+    type Storage = DerefFlaggedStorage<Self, IdvStorage<Self>>;
 }

server/src/cmd.rs

@@ -109,6 +109,7 @@ fn get_handler(cmd: &ChatCommand) -> CommandHandler {
         ChatCommand::MakeSprite => handle_make_sprite,
         ChatCommand::Motd => handle_motd,
         ChatCommand::Object => handle_object,
+        ChatCommand::PermitBuild => handle_permit_build,
         ChatCommand::Players => handle_players,
         ChatCommand::Region => handle_region,
         ChatCommand::RemoveLights => handle_remove_lights,
@@ -1116,6 +1117,76 @@ fn handle_safezone(
     }
 }
 
+fn handle_permit_build(
+    server: &mut Server,
+    client: EcsEntity,
+    _target: EcsEntity,
+    args: String,
+    action: &ChatCommand,
+) {
+    if let (Some(target_alias), xlo_opt, xhi_opt, ylo_opt, yhi_opt, zlo_opt, zhi_opt) = scan_fmt_some!(
+        &args,
+        &action.arg_fmt(),
+        String,
+        i32,
+        i32,
+        i32,
+        i32,
+        i32,
+        i32
+    ) {
+        let ecs = server.state.ecs();
+        let target_player_opt = (&ecs.entities(), &ecs.read_storage::<comp::Player>())
+            .join()
+            .find(|(_, player)| player.alias == target_alias)
+            .map(|(entity, _)| entity);
+
+        if let Some(target_player) = target_player_opt {
+            if server
+                .state
+                .read_storage::<comp::CanBuild>()
+                .get(target_player)
+                .is_some()
+            {
+                ecs.write_storage::<comp::CanBuild>().remove(target_player);
+                server.notify_client(
+                    client,
+                    ServerGeneral::server_msg(
+                        ChatType::CommandInfo,
+                        format!("Removed {}'s permission to build", target_alias),
+                    ),
+                );
+            } else {
+                let _ =
+                    ecs.write_storage::<comp::CanBuild>()
+                        .insert(target_player, comp::CanBuild {
+                            building_is_on: false,
+                        });
+                server.notify_client(
+                    client,
+                    ServerGeneral::server_msg(
+                        ChatType::CommandInfo,
+                        format!("Gave {} permission to build", target_alias),
+                    ),
+                );
+            }
+        } else {
+            server.notify_client(
+                client,
+                ServerGeneral::server_msg(
+                    ChatType::CommandError,
+                    format!("Player '{}' not found!", target_alias),
+                ),
+            );
+        }
+    } else {
+        server.notify_client(
+            client,
+            ServerGeneral::server_msg(ChatType::CommandError, action.help_string()),
+        );
+    }
+}
+
 fn handle_players(
     server: &mut Server,
     client: EcsEntity,
@@ -1150,32 +1221,34 @@ fn handle_build(
     _args: String,
     _action: &ChatCommand,
 ) {
-    if server
-        .state
-        .read_storage::<comp::CanBuild>()
-        .get(target)
-        .is_some()
-    {
-        server
+    if let Some(mut can_build) = server
         .state
         .ecs()
         .write_storage::<comp::CanBuild>()
-            .remove(target);
+        .get_mut(target)
+    {
+        if can_build.building_is_on {
+            can_build.building_is_on = false;
             server.notify_client(
                 client,
                 ServerGeneral::server_msg(ChatType::CommandInfo, "Toggled off build mode!"),
             );
         } else {
-        let _ = server
-            .state
-            .ecs()
-            .write_storage::<comp::CanBuild>()
-            .insert(target, comp::CanBuild);
+            can_build.building_is_on = true;
             server.notify_client(
                 client,
                 ServerGeneral::server_msg(ChatType::CommandInfo, "Toggled on build mode!"),
             );
         }
+    } else {
+        server.notify_client(
+            client,
+            ServerGeneral::server_msg(
+                ChatType::CommandInfo,
+                "You do not have permission to build.",
+            ),
+        );
+    }
 }
 
 fn handle_help(

server/src/sys/msg/in_game.rs

@@ -102,14 +102,20 @@ impl Sys {
                 }
             },
             ClientGeneral::BreakBlock(pos) => {
-                if let Some(block) = can_build.get(entity).and_then(|_| terrain.get(pos).ok()) {
+                if let Some(comp_can_build) = can_build.get(entity) {
+                    if comp_can_build.building_is_on {
+                        if let Some(block) = terrain.get(pos).ok() {
                             block_changes.set(pos, block.into_vacant());
                         }
+                    }
+                }
             },
             ClientGeneral::PlaceBlock(pos, block) => {
-                if can_build.get(entity).is_some() {
+                if let Some(comp_can_build) = can_build.get(entity) {
+                    if comp_can_build.building_is_on {
                         block_changes.try_set(pos, block);
                     }
+                }
             },
             ClientGeneral::UnlockSkill(skill) => {
                 stats

voxygen/src/session.rs

@@ -317,7 +317,10 @@ impl PlayState for SessionState {
                 .state()
                 .read_storage::<comp::CanBuild>()
                 .get(player_entity)
-                .is_some();
+                .unwrap_or_else(|| &comp::CanBuild {
+                    building_is_on: false,
+                })
+                .building_is_on;
 
             let is_mining = self
                 .client