#version 3.7;

global_settings {
    assumed_gamma 1.3 max_trace_level 16
    radiosity {
        pretrace_start 0.08
        pretrace_end   0.01
        count 200
        nearest_count 10
        error_bound 0.5
        recursion_limit 2
        low_error_factor 0.5
        gray_threshold 0.0
    }
}

background { color rgb <0.72, 0.86, 1.00> }

// --- Camera (keeps castle framed well) ---
camera {
  location <22, 13, -24>
  look_at  <0, 5.2, 0>
  angle 40
  up <0,9,0>
  right <16,0,0>  // right,up -> 16:9
}

// --- Summer sky ---
sky_sphere {
  pigment {
    gradient y
    color_map {
      [0.00 color rgb <0.82, 0.94, 1.00>]  // horizon
      [0.55 color rgb <0.48, 0.74, 1.00>]
      [1.00 color rgb <0.18, 0.46, 0.92>]  // zenith
    }
  }
}

// Light summer haze
fog {
  fog_type 2
  distance 220
  color rgb <0.84, 0.93, 1.00>
  fog_offset 0.0
  fog_alt 22
  turbulence 0.08
}

// ----------------- Finishes -----------------
#declare Fin_Stone = finish { diffuse 0.90 specular 0.06 roughness 0.10 };
#declare Fin_Roof  = finish { diffuse 0.88 specular 0.10 roughness 0.06 };
#declare Fin_Wood  = finish { diffuse 0.90 specular 0.05 roughness 0.12 };
#declare Fin_Iron  = finish { diffuse 0.40 specular 0.28 roughness 0.05 };

#declare Col_RoofA  = color rgb <0.43, 0.22, 0.18>;
#declare Col_WoodA  = color rgb <0.42, 0.28, 0.18>;
#declare Col_Iron   = color rgb <0.16, 0.17, 0.20>;

// ----------------- Stone / brick masonry textures -----------------
// IMPORTANT: `pigment_map` entries must contain PATTERN blocks, not `pigment {}` blocks.

#declare Pig_StoneBase =
pigment {
  average
  pigment_map {
    // Main ashlar blocks
    [0.78 brick
      color rgb <0.78, 0.78, 0.76>,
      color rgb <0.66, 0.67, 0.69>
      brick_size <0.85, 0.42, 0.85>
      mortar 0.14
    ]
    // Broad tonal variation
    [0.14 bozo
      color_map {
        [0.00 color rgb <0.92,0.92,0.92>]
        [0.55 color rgb <0.80,0.80,0.81>]
        [1.00 color rgb <0.62,0.62,0.64>]
      }
      scale 0.60
    ]
    // Small specks
    [0.08 granite
      color_map {
        [0.00 color rgb <0.12,0.12,0.13>]
        [1.00 color rgb <0.22,0.22,0.24>]
      }
      scale 0.35
    ]
  }
}

#declare Pig_StoneDark =
pigment {
  average
  pigment_map {
    [0.80 brick
      color rgb <0.68, 0.69, 0.70>,
      color rgb <0.54, 0.55, 0.57>
      brick_size <0.85, 0.42, 0.85>
      mortar 0.14
    ]
    [0.12 bozo
      color_map {
        [0.00 color rgb <0.88,0.88,0.89>]
        [0.55 color rgb <0.74,0.74,0.75>]
        [1.00 color rgb <0.56,0.56,0.58>]
      }
      scale 0.70
    ]
    [0.08 granite
      color_map {
        [0.00 color rgb <0.10,0.10,0.11>]
        [1.00 color rgb <0.20,0.20,0.22>]
      }
      scale 0.35
    ]
  }
}

#declare Pig_Crenel =
pigment {
  average
  pigment_map {
    [0.84 brick
      color rgb <0.80, 0.80, 0.78>,
      color rgb <0.66, 0.67, 0.69>
      brick_size <0.70, 0.38, 0.70>
      mortar 0.16
    ]
    [0.16 wrinkles
      color_map {
        [0.00 color rgb <0.76,0.76,0.74>]
        [1.00 color rgb <0.62,0.62,0.64>]
      }
      scale 0.45
    ]
  }
}

#declare Tex_Stone =
texture {
  pigment { Pig_StoneBase }
  normal { bumps 0.28 scale 0.18 }
  finish { Fin_Stone }
}

#declare Tex_Stone_Dark =
texture {
  pigment { Pig_StoneDark }
  normal { bumps 0.30 scale 0.18 }
  finish { Fin_Stone }
}

#declare Tex_Crenel =
texture {
  pigment { Pig_Crenel }
  normal { bumps 0.24 scale 0.16 }
  finish { Fin_Stone }
}

#declare Tex_Roof =
texture { pigment { color Col_RoofA } finish { Fin_Roof } }

#declare Tex_Wood =
texture {
  pigment {
    wood
    color_map {
      [0.0 color (Col_WoodA*0.82)]
      [0.5 color Col_WoodA]
      [1.0 color (Col_WoodA*1.10)]
    }
    scale 0.55
  }
  normal { bumps 0.14 scale 0.08 }
  finish { Fin_Wood }
}

#declare Tex_Iron =
texture { pigment { color Col_Iron } finish { Fin_Iron } }

// Summer grass + gravel path
#declare Tex_GrassSummer =
texture {
  pigment {
    bozo
    color_map {
      [0.00 color rgb <0.24, 0.52, 0.22>]
      [0.55 color rgb <0.18, 0.46, 0.18>]
      [1.00 color rgb <0.30, 0.60, 0.24>]
    }
    scale 1.25
  }
  normal { bumps 0.22 scale 0.25 }
  finish { diffuse 0.95 specular 0.02 roughness 0.14 }
}

#declare Tex_Path =
texture {
  pigment {
    bozo
    color_map {
      [0.00 color rgb <0.58, 0.54, 0.46>]
      [0.60 color rgb <0.48, 0.44, 0.38>]
      [1.00 color rgb <0.64, 0.60, 0.50>]
    }
    scale 0.9
  }
  normal { bumps 0.14 scale 0.20 }
  finish { diffuse 0.96 specular 0.02 roughness 0.16 }
}

#declare Tex_Water =
texture {
  pigment { color rgbt <0.10, 0.26, 0.20, 0.58> }
  normal { ripples 0.35 scale 0.65 }
  finish { diffuse 0.10 specular 0.30 roughness 0.03 reflection 0.10 }
}

// ----------------- Warm summer lights with soft shadows -----------------
light_source {
  <120, 160, -110>
  color rgb <1.00, 0.90, 0.75>*1.20
  parallel
  point_at <0, 0, 0>
  area_light <18,0,0>, <0,0,18>, 5, 5
  adaptive 1
  jitter
}

light_source {
  <-60, 70, -30>
  color rgb <1.00, 0.88, 0.72>*0.30
  area_light <12,0,0>, <0,0,12>, 4, 4
  adaptive 1
  jitter
}

light_source {
  <0, 120, 80>
  color rgb <0.65, 0.78, 1.00>*0.16
  area_light <16,0,0>, <0,0,16>, 4, 4
  adaptive 1
  jitter
}

// ----------------- Ground -----------------
plane { y, 0 texture { Tex_GrassSummer } }

// Slightly trimmed rectangular yard patch (darker/mown)
difference {
  box { <-4, -0.001, -18>, <4, 0.03, 18> }
  box { <-3, -0.01, -16>, <3, 0.05, 16> }
  texture {
    pigment {
      bozo
      color_map {
        [0.00 color rgb <0.12, 0.34, 0.12>]
        [1.00 color rgb <0.10, 0.28, 0.10>]
      }
      scale 0.65
    }
    normal { bumps 0.14 scale 0.22 }
    finish { diffuse 0.95 specular 0.02 roughness 0.12 }
  }
  translate <10, 0, 0>
}

// ----------------- Castle geometry -----------------
#declare TowerR = 1.6;
#declare TowerH = 9.5;

#macro TowerAt(PX,PZ)
  union {
    cylinder {
      <PX, 0, PZ>, <PX, TowerH, PZ>, TowerR
      texture { Tex_Stone_Dark scale 0.95 rotate <0, 25, 0> translate <PX,0,PZ> }
    }

    difference {
      cylinder { <PX, TowerH, PZ>, <PX, TowerH+1.0, PZ>, TowerR+0.25 }
      cylinder { <PX, TowerH-0.1, PZ>, <PX, TowerH+1.1, PZ>, TowerR-0.05 }
      texture { Tex_Crenel scale 0.95 rotate <0, 15, 0> translate <PX,0,PZ> }
    }

    cone {
      <PX, TowerH+1.0, PZ>, TowerR+0.15,
      <PX, TowerH+3.8, PZ>, 0.1
      texture { Tex_Roof }
    }
  }
#end

#declare Castle =
union {
  // Central keep (base)
  box {
    <-4, 0, -4>, <4, 8, 4>
    texture { Tex_Stone scale 0.95 rotate <0, 90, 0> }
  }

  // Keep crenellations
  union {
    #local i = -3.5;
    #while (i <= 3.5)
      box { <i, 8, -4.3>, <i+0.6, 8.8, -3.7> }
      box { <i, 8,  3.7>, <i+0.6, 8.8,  4.3> }
      box { <-4.3, 8, i>, <-3.7, 8.8, i+0.6> }
      box { < 3.7, 8, i>, < 4.3, 8.8, i+0.6> }
      #local i = i + 1.0;
    #end
    texture { Tex_Crenel scale 0.95 rotate <0, 90, 0> }
  }

  // Corner towers
  TowerAt(-4, -4)
  TowerAt( 4, -4)
  TowerAt(-4,  4)
  TowerAt( 4,  4)

  // Gatehouse protrusion
  box {
    <-2.2, 0, -6.2>, <2.2, 6.0, -4.0>
    texture { Tex_Stone_Dark scale 0.95 rotate <0, 90, 0> }
  }

  // Gate arch surround (boolean)
  difference {
    box { <-1.2, 0.0, -6.21>, <1.2, 3.2, -3.95> }
    cylinder { <0, 3.2, -6.30>, <0, 3.2, -3.80>, 1.2 }
    texture { Tex_Stone_Dark scale 0.95 rotate <0, 90, 0> }
  }

  // Wooden gate slab
  box { <-1.05, 0.05, -5.05>, <1.05, 2.7, -4.85> texture { Tex_Wood } }

  // Iron band
  box { <-1.05, 1.25, -4.86>, <1.05, 1.40, -4.82> texture { Tex_Iron } }

  // Slit windows (dark)
  #declare SlitW = 0.25;
  #declare SlitH = 1.2;
  #declare SlitD = 0.3;
  union {
    #local sx = -2.5;
    #while (sx <= 2.5)
      box {
        <sx-SlitW/2, 3.2, -4.01>, <sx+SlitW/2, 3.2+SlitH, -4.01+SlitD>
        texture {
          pigment { color rgb <0.02,0.02,0.03> }
          finish { diffuse 0.15 specular 0 }
        }
      }
      #local sx = sx + 1.25;
    #end
  }

  // Courtyard wall (outer curtain wall)
  difference {
    box { <-9, 0, -9>, <9, 4.0, 9> texture { Tex_Stone scale 0.95 } }
    box { <-7.7, -0.1, -7.7>, <7.7, 4.2, 7.7> texture { Tex_Stone scale 0.95 } }
  }

  // Outer wall crenellations
  union {
    #local tt = -8.5;
    #while (tt <= 8.5)
      box { <tt, 4.0, -9.3>, <tt+0.7, 4.8, -8.7> }
      box { <tt, 4.0,  8.7>, <tt+0.7, 4.8,  9.3> }
      box { <-9.3, 4.0, tt>, <-8.7, 4.8, tt+0.7> }
      box { < 8.7, 4.0, tt>, < 9.3, 4.8, tt+0.7> }
      #local tt = tt + 1.4;
    #end
    texture { Tex_Crenel scale 0.95 }
  }

  // Gravel path leading to gate
  box { <-1.8, 0.001, -20>, <1.8, 0.02, -4.85> texture { Tex_Path } }
};

object { Castle }

// Moat hint (shallow water ring outside wall)
difference {
  cylinder { <0, 0.02, 0>, <0, 0.08, 0>, 13.0 }
  cylinder { <0, 0.01, 0>, <0, 0.10, 0>, 10.5 }
  texture { Tex_Water }
}