Buildings textured by material (stone, iron, wood, cloth); the heart in crystal facets

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/gfx.rs

@@ -106,8 +106,8 @@ pub struct Gfx {
     pub gear: Texture2D,         // their gear parts (see GEAR_HELMET etc.)
     pub atlas_hd: Texture2D,   // the tile atlas of the high-res style, 64x64 tiles (see HD_TILES)
     pub atlas_hd2: Texture2D,  // the same with 128x128 tiles (close up)
-    pub materials: [Texture2D; 8],    // furniture materials, high-res (see crate::props::Mat)
-    pub materials_px: [Texture2D; 8], // the same for the pixel-art style (16x16)
+    pub materials: [Texture2D; 9],    // furniture materials, high-res (see crate::props::Mat)
+    pub materials_px: [Texture2D; 9], // the same for the pixel-art style (16x16)
     pub cursors: Texture2D, // mouse pointer frames, 16x16 each (see CURSOR_*)
     pub badges: Texture2D, // achievement badges, 32x32 each (see badges.rs)
     pub font: Texture2D, // Dinowyde (glyphs of 6x8 px ordered by Unicode, see font_slot) and DINOBYTE
@@ -354,7 +354,7 @@ macro_rules! material {
         (include_bytes!(concat!("../assets/textures/mat/", $name, "-64.png")) as &[u8], include_bytes!(concat!("../assets/textures/mat/", $name, "-16.png")) as &[u8])
     };
 }
-const MATERIALS: [(&[u8], &[u8]); 8] = [
+const MATERIALS: [(&[u8], &[u8]); 9] = [
     material!("wood"),
     material!("stone"),
     material!("iron"),
@@ -363,6 +363,7 @@ const MATERIALS: [(&[u8], &[u8]); 8] = [
     material!("fur"),
     material!("book"),
     material!("paper"),
+    material!("crystal"),
 ];
 
 // ---- high-res tiles