Wood: giant mushrooms underground, felled by imps; wooden bridges and doors cost wood

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

src/gfx.rs

@@ -83,6 +83,11 @@ pub const T_RIVAL3: u32 = 189; // 4 variants: floor of the yellow master
 pub const I_DRAWBRIDGE: u32 = 193; // drawbridge tool: a raised flap on chains
 pub const I_FREEZE: u32 = 194; // frost spell: a snowflake
 pub const T_OBSIDIAN: u32 = 195; // 4 variants: cooled lava, dark glass with glowing seams
+pub const T_STEM: u32 = 199; // giant mushroom stem
+pub const T_CAP: u32 = 200; // giant mushroom cap, glowing spots
+pub const T_BARK: u32 = 201; // tree trunk
+pub const T_LEAVES: u32 = 202; // 2 variants: tree crown
+pub const T_GRASS: u32 = 204; // 4 variants: grass above ground
 
 pub struct Gfx {
     pub atlas: Texture2D,
@@ -835,6 +840,39 @@ fn gen_atlas() -> Image {
             None
         }
     });
+    // giant mushroom: pale ribbed stem, a violet cap with glowing spots
+    cv.cell(T_STEM, |x, y| {
+        let r = hash(x, y, 410);
+        Some(if x % 4 == 0 { c(150, 140, 130) } else if r % 9 == 0 { c(170, 160, 150) } else { c(200, 192, 178) })
+    });
+    cv.cell(T_CAP, |x, y| {
+        let spot = |cx: i32, cy: i32| (x - cx).pow(2) + (y - cy).pow(2) <= 2;
+        if spot(4, 4) || spot(11, 6) || spot(6, 11) || spot(12, 12) {
+            Some(c(150, 255, 230))
+        } else if (x + y) % 5 == 0 {
+            Some(c(90, 50, 130))
+        } else {
+            Some(c(120, 66, 170))
+        }
+    });
+    // tree: bark and two kinds of crown
+    cv.cell(T_BARK, |x, y| {
+        let r = hash(x, y, 420);
+        Some(if x % 5 == 0 || r % 7 == 0 { c(60, 40, 24) } else { c(96, 66, 40) })
+    });
+    for v in 0..2u32 {
+        cv.cell(T_LEAVES + v, |x, y| {
+            let r = hash(x, y, 430 + v);
+            Some(if r % 5 == 0 { c(30, 70, 30) } else if r % 7 == 0 { c(110, 160, 60) } else if v == 0 { c(56, 110, 44) } else { c(70, 120, 40) })
+        });
+    }
+    // grass above ground
+    for v in 0..4u32 {
+        cv.cell(T_GRASS + v, |x, y| {
+            let r = hash(x, y, 440 + v);
+            Some(if r % 11 == 0 { c(120, 170, 70) } else if r % 6 == 0 { c(50, 96, 40) } else if r % 23 == 0 { c(200, 190, 90) } else { c(74, 126, 52) })
+        });
+    }
     // obsidian: cooled lava, dark glass with a few glowing seams
     for v in 0..4u32 {
         cv.cell(T_OBSIDIAN + v, |x, y| {
@@ -1976,6 +2014,8 @@ impl Gfx {
             Kind::Lava => T_LAVA + v,
             Kind::Bridge | Kind::Drawbridge => T_BRIDGE + (v & 1),
             Kind::Obsidian => T_OBSIDIAN + v,
+            Kind::Mushroom => T_FLOOR + v,
+            Kind::Tree => T_GRASS + v,
             Kind::LavaBridge => T_STONEBRIDGE + (v & 1),
             Kind::Shard => T_HEROFLOOR + v,
             Kind::Aerie => T_AERIE + v,