New ramp types

tools/asset/chunk/__main__.py

@@ -74,6 +74,10 @@ TILE_SHAPE_RAMP_NORTHEAST = 6
 TILE_SHAPE_RAMP_NORTHWEST = 7
 TILE_SHAPE_RAMP_SOUTHEAST = 8
 TILE_SHAPE_RAMP_SOUTHWEST = 9
+TILE_SHAPE_RAMP_NORTHEAST_INNER = 10
+TILE_SHAPE_RAMP_NORTHWEST_INNER = 11
+TILE_SHAPE_RAMP_SOUTHEAST_INNER = 12
+TILE_SHAPE_RAMP_SOUTHWEST_INNER = 13
 
 FILE_MAGIC  = b'DCF'
 DMF_MAGIC   = b'DMF\x00'
@@ -186,7 +190,9 @@ def _tile_quad(u0, u1, v0, v1, fx, fy, sw_z, se_z, ne_z, nw_z):
 
 # Per-shape corner heights as (sw, se, ne, nw) offsets from tile base Z.
 # NORTH=+Y, EAST=+X.  Cardinal ramps: low face at 0, high face at 1.
-# Diagonal ramps: opposite corner at 0/1, adjacent corners at 0.5.
+# Diagonal outer-corner ramps: only the named corner raised, rest at 0.
+# Diagonal inner-corner ramps: only the corner opposite the named one is
+# lowered to 0, the rest (including the named corner) stay raised at 1.
 _RAMP_CORNERS = {
     TILE_SHAPE_GROUND:         (0.0, 0.0, 0.0, 0.0),
     TILE_SHAPE_RAMP_NORTH:     (0.0, 0.0, 1.0, 1.0),  # south=low, north=high
@@ -197,6 +203,10 @@ _RAMP_CORNERS = {
     TILE_SHAPE_RAMP_NORTHWEST: (0.0, 0.0, 0.0, 1.0),  # only NW raised
     TILE_SHAPE_RAMP_SOUTHEAST: (0.0, 1.0, 0.0, 0.0),  # only SE raised
     TILE_SHAPE_RAMP_SOUTHWEST: (1.0, 0.0, 0.0, 0.0),  # only SW raised
+    TILE_SHAPE_RAMP_NORTHEAST_INNER: (0.0, 1.0, 1.0, 1.0),  # only SW low
+    TILE_SHAPE_RAMP_NORTHWEST_INNER: (1.0, 0.0, 1.0, 1.0),  # only SE low
+    TILE_SHAPE_RAMP_SOUTHEAST_INNER: (1.0, 1.0, 1.0, 0.0),  # only NW low
+    TILE_SHAPE_RAMP_SOUTHWEST_INNER: (1.0, 1.0, 0.0, 1.0),  # only NE low
 }