Chamber 14 stair pit

assets/materials/static.skm.yaml

@@ -1268,4 +1268,10 @@ materials:
     gSPGeometryMode:
       clear: [G_LIGHTING]
     gDPSetCycleType: G_CYC_1CYCLE
-
+
+  # Portal surfaces are defined by level geometry, which requires a material.
+  # This material exists to create invisible portal surfaces. For example, to
+  # place portals over other, more complex geometry.
+  transparent_portal_surface:
+    gSPGeometryMode:
+      set: [G_CULL_BACK, G_CULL_FRONT]

assets/test_chambers/test_chamber_09/test_chamber_09.yaml

@@ -31,7 +31,7 @@ cutscenes:
     - goto pit_loop
   CHECK_STAIRS:
     - label stair_loop
-    - wait_for_signal should_raise_stairs
+    - wait_for_signal should_raise_stairs 5
     - play_animation stairs stairs_ascend
     - wait_for_animation stairs
     - delay 2

documentation/levels/level_objects/static.md

@@ -1,7 +1,6 @@
 # @static
 
-Static level geometry. Used to generate level mesh and portal surface
-data.
+Static level geometry. Used to generate level mesh and portal surface data.
 
 ## Name structure
 
@@ -39,10 +38,13 @@ surfaces are portalable. The following material names allow portals to be placed
 * `concrete_modular_wall001d`
 * `concrete_modular_ceiling001a`
 * `concrete_modular_floor001a`
+* `transparent_portal_surface`
 
 This behavior can be overridden by using the `no_portals` argument. To accept
-portals, the geometry must also have a coplanar static collision object or be
-animated by a [bone](./anim.md) that also animates a dynamic collision object.
+portals, the geometry must also have associated collision so that it can be hit.
+This can be done by placing a coplanar static collision object or through
+animation with a [bone](./anim.md) that also animates a dynamic collision
+object.
 
 A mesh's UV coordinates are only used if its material does not have the
 `tileSizeS` and `tileSizeT` properties in its YAML definition. Otherwise, the

tools/level_scripts/static_export.lua

@@ -16,6 +16,7 @@ local portalable_surfaces = {
     concrete_modular_wall001d = true,
     concrete_modular_ceiling001a = true,
     concrete_modular_floor001a = true,
+    transparent_portal_surface = true,
 }
 
 local signal_elements = {}