Rig sprite: slightly top-down view like the game's machines

Top face with vents and an indicator, lit left edge, darker right side,
front with three card bays and a power port, two feet, rounded outline.
The cell-centre check still passes, so nothing can sit under it.

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

art/sprites.py

@@ -108,24 +108,79 @@ def gpu(accent, accent_dark, burnt=False):
 
 
 def rig():
-    """矿架（48×48，3×3 格）：开放式机架，四层显卡位，左下电源。"""
+    """矿架（48×48，3×3 格）：和游戏里其他机器一样的略微俯视（3/4 视角）——顶面是上窄下宽的梯形，
+    下面是正面，正面里四层显卡位，左下角电源；光从左上来，左亮右暗；轮廓统一深紫、削掉尖角、底下两只脚和一圈阴影。"""
     c = Canvas(48, 48)
-    c.box(2, 3, 45, 44, 'd')                   # 外框 + 背板：内部不透明，否则游戏按格子中心像素判断占格会把空隙当成空格
-    for y in range(4, 44):
-        c.put(3, y, 'b'); c.put(44, y, 'd')
-    for x in range(3, 45):
-        c.put(x, 4, 'l'); c.put(x, 43, 'k')
-    for i, y in enumerate((8, 16, 24, 32)):    # 四层卡位
-        c.rect(6, y, 41, y + 5, 'k')
-        c.rect(6, y, 41, y, 'g')
-        for x in range(8, 40, 3):
-            c.put(x, y + 2, 'g'); c.put(x, y + 3, 'g')
-        c.put(40, y + 2, 'G' if i % 2 == 0 else 'R')
-    c.box(6, 38, 17, 42, 'd')                  # 电源
-    c.put(15, 40, 'S')
-    for x in range(20, 42, 2):                 # 底部走线
-        c.put(x, 40, 'm')
-    c.rect(2, 45, 45, 46, 'k')                 # 脚
+    FL, FR, FY, DEP = 3, 44, 24, 19          # 正面左右边、顶面前沿所在行、顶面深度（顶面后沿在 y=6，中心行 y=8 落在顶面上）
+    BOT = 44                                  # 正面底边
+    inset = lambda v: v // 6                  # 顶面后部只略微收窄：原版机器的顶面也近似矩形，并且要让左右两格的中心落在顶面内
+
+    # 顶面：后部受光、前部稍暗；左缘亮、右缘暗
+    for v in range(DEP):
+        y = FY - v
+        x0, x1 = FL + inset(v), FR - inset(v)
+        for x in range(x0, x1 + 1):
+            c.put(x, y, 'l' if v >= 4 else 'b')
+        c.put(x0, y, 'h'); c.put(x0 + 1, y, 'l')
+        c.put(x1, y, 'd'); c.put(x1 - 1, y, 'm')
+    for x in range(FL + inset(DEP - 1), FR - inset(DEP - 1) + 1):
+        c.put(x, FY - DEP + 1, 'l')
+    # 顶面上的散热格栅和一个小指示灯
+    for v in range(4, 16, 3):
+        for u in range(6, 24):
+            c.put(FL + inset(v) + u, FY - v, 'g')
+    c.put(FR - 9, FY - 8, 'G'); c.put(FR - 8, FY - 8, 'G')
+    # 正面：中间色，左端受光、右端暗；顶部一条暗折线
+    for y in range(FY + 1, BOT + 1):
+        for x in range(FL, FR + 1):
+            c.put(x, y, 'm')
+        c.put(FL, y, 'b'); c.put(FL + 1, y, 'l' if y < FY + 5 else 'b')
+        for dx in range(4):
+            c.put(FR - dx, y, 'd' if dx else 'k')
+    for x in range(FL, FR + 1):
+        c.put(x, FY + 1, 'k')
+        c.put(x, BOT, 'd')
+    for x in range(FL + 1, FR):
+        c.put(x, FY, 'h')
+        c.put(x, FY + 2, 'b')
+    for x in range(FL + 1, FR):
+        c.put(x, BOT - 1, 'd')
+    # 正面里的四层显卡位（深色槽，上沿亮、下沿暗，右端一颗状态灯）
+    # 正面四层显卡位（深色槽，右端一颗状态灯）；间隔行用中间色，保证每格中心都不透明
+    for i, y in enumerate((FY + 3, FY + 8, FY + 13)):
+        for x in range(FL + 3, FR - 4):
+            for dy in range(3):
+                c.put(x, y + dy, 'k')
+            c.put(x, y, 'g')
+        for x in range(FL + 6, FR - 6, 3):
+            c.put(x, y + 1, 'd')
+        c.put(FR - 4, y + 1, 'G' if i % 2 == 0 else 'R')
+    # 电源口（左下）
+    for x in range(FL + 3, FL + 12):
+        for dy in (-3, -2):
+            c.put(x, BOT + dy, 'k')
+    c.put(FL + 10, BOT - 2, 'S')
+    for x in range(FL + 15, FR - 4, 2):
+        c.put(x, BOT - 2, 'g')
+    # 底部两只脚
+    for x in (FL + 2, FL + 3, FR - 3, FR - 2):
+        c.put(x, BOT + 1, 'O'); c.put(x, BOT + 2, 'O')
+
+    # 轮廓：实体像素挨着透明的一圈描成轮廓色，再削掉尖角
+    solid = lambda v: v is not None
+    get = lambda x, y: c.px[y][x] if 0 <= x < c.w and 0 <= y < c.h else None
+    edge = [(x, y) for y in range(c.h) for x in range(c.w)
+            if solid(get(x, y)) and any(not solid(get(x + dx, y + dy)) for dx, dy in ((1, 0), (-1, 0), (0, 1), (0, -1)))]
+    for x, y in edge:
+        c.put(x, y, 'O')
+    for y in range(c.h):
+        for x in range(c.w):
+            if get(x, y) == 'O' and sum(solid(get(x + dx, y + dy)) for dx, dy in ((1, 0), (-1, 0), (0, 1), (0, -1))) <= 1:
+                c.px[y][x] = None
+    # 圆角：正面底部两角各削一个像素，让轮廓和原版机器一样不是尖方块
+    for x, y in ((FL, BOT), (FR, BOT), (FL, BOT + 0), (FR, BOT + 0)):
+        c.px[y][x] = None
+        c.px[y][x + (1 if x == FL else -1)] = 'O'
     return c