New ramp types

editor/client/public/common/chunkterrain.js

@@ -27,10 +27,16 @@ const ChunkTerrain = (() => {
   const TILE_SHAPE_RAMP_NORTHWEST = 7;
   const TILE_SHAPE_RAMP_SOUTHEAST = 8;
   const TILE_SHAPE_RAMP_SOUTHWEST = 9;
+  const TILE_SHAPE_RAMP_NORTHEAST_INNER = 10;
+  const TILE_SHAPE_RAMP_NORTHWEST_INNER = 11;
+  const TILE_SHAPE_RAMP_SOUTHEAST_INNER = 12;
+  const TILE_SHAPE_RAMP_SOUTHWEST_INNER = 13;
 
   // 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.
   const 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],
@@ -41,6 +47,10 @@ const ChunkTerrain = (() => {
     [TILE_SHAPE_RAMP_NORTHWEST]: [0.0, 0.0, 0.0, 1.0],
     [TILE_SHAPE_RAMP_SOUTHEAST]: [0.0, 1.0, 0.0, 0.0],
     [TILE_SHAPE_RAMP_SOUTHWEST]: [1.0, 0.0, 0.0, 0.0],
+    [TILE_SHAPE_RAMP_NORTHEAST_INNER]: [0.0, 1.0, 1.0, 1.0],
+    [TILE_SHAPE_RAMP_NORTHWEST_INNER]: [1.0, 0.0, 1.0, 1.0],
+    [TILE_SHAPE_RAMP_SOUTHEAST_INNER]: [1.0, 1.0, 1.0, 0.0],
+    [TILE_SHAPE_RAMP_SOUTHWEST_INNER]: [1.0, 1.0, 0.0, 1.0],
   };
 
   function tileIndex(x, y, z) {
@@ -92,6 +102,8 @@ const ChunkTerrain = (() => {
     TILE_SHAPE_RAMP_SOUTH, TILE_SHAPE_RAMP_WEST,
     TILE_SHAPE_RAMP_NORTHEAST, TILE_SHAPE_RAMP_NORTHWEST,
     TILE_SHAPE_RAMP_SOUTHEAST, TILE_SHAPE_RAMP_SOUTHWEST,
+    TILE_SHAPE_RAMP_NORTHEAST_INNER, TILE_SHAPE_RAMP_NORTHWEST_INNER,
+    TILE_SHAPE_RAMP_SOUTHEAST_INNER, TILE_SHAPE_RAMP_SOUTHWEST_INNER,
     RAMP_CORNERS, tileIndex, buildTerrainVerts,
   });
 })();