tweak: pressure plates

- Show on HUD
- Name as "lamp pressure plate" instead of just "pressure plate"

src/surfaces.zig

@@ -560,7 +560,7 @@ pub const SirenTrap = Machine{
 
 pub const LightPressurePlate = Machine{
     .id = "trap_light_plate",
-    .name = "pressure plate",
+    .name = "lamp pressure plate",
     .powered_tile = '^',
     .unpowered_tile = '^',
     .powered_fg = colors.GOLD,
@@ -570,6 +570,7 @@ pub const LightPressurePlate = Machine{
     .detect_with_heat = false, // Efficient LED bulbs!
     .powered_luminescence = 60,
     .unpowered_luminescence = 0,
+    .show_on_hud = true,
     .on_power = struct {
         pub fn f(machine: *Machine) void {
             for (&DIRECTIONS) |d| if (machine.coord.move(d, state.mapgeometry)) |neighbor| {

src/types.zig

@@ -4559,6 +4559,7 @@ pub const Machine = struct {
     disabled: bool = false,
 
     player_interact: ?MachInteract = null,
+    show_on_hud: bool = false, // Show on HUD even if no player interaction
 
     // If the player tries to trigger the machine, should we prompt for a
     // confirmation?

src/ui.zig

@@ -1564,7 +1564,7 @@ fn drawHUD(moblist: []const *Mob) void {
                 priority = 2;
                 focus = .Surface;
                 name.appendSlice(switch (surf) {
-                    .Machine => |m| if (m.player_interact != null) m.name else "",
+                    .Machine => |m| if (m.player_interact != null or m.show_on_hud) m.name else "",
                     .Prop => "",
                     .Corpse => "corpse",
                     .Container => |c| c.name,