#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 <0.92, 0.55, 0.38> }

camera {
  location <0, 1.75, -5.2>
  look_at  <0, 1.25, 0>
  angle 40
  up <0,9,0>
  right <16,0,0>  // right,up -> 16:9
}

light_source {
  <3.5, 5.5, -4.5>
  color rgb <1.00, 0.83, 0.65>*1.2
  area_light <1.2,0,0>, <0,0,1.2>, 5, 5
  adaptive 1
  jitter
}

light_source {
  <-4.0, 4.0, -2.5>
  color rgb <1.00, 0.78, 0.60>*0.65
  area_light <1.0,0,0>, <0,0,1.0>, 4, 4
  adaptive 1
  jitter
}

light_source {
  <0.0, 6.5, 2.0>
  color rgb <1.00, 0.85, 0.70>*0.35
  area_light <1.6,0,0>, <0,0,1.6>, 5, 5
  adaptive 1
  jitter
}

plane {
  y, 0
  pigment { color rgb <0.20,0.13,0.11> }
  finish { diffuse 0.85 specular 0.08 roughness 0.06 }
}

// ---------------- Materials (simple shading, no image textures) ----------------
#declare Mat_Body =
texture {
  pigment { color rgb <0.18, 0.12, 0.11> }
  finish  { diffuse 0.9 specular 0.15 roughness 0.08 }
}

#declare Mat_Dark =
texture {
  pigment { color rgb <0.03, 0.02, 0.02> }
  finish  { diffuse 0.9 specular 0.0 roughness 0.2 }
}

#declare Mat_Glow =
texture {
  pigment { color rgb <1.00, 0.55, 0.25> }
  finish  { diffuse 0.2 emission 1.7 specular 0 roughness 0.2 }
}

#declare Mat_EyeGlow =
texture {
  pigment { color rgb <1.00, 0.95, 0.55> }
  finish  { diffuse 0.15 emission 2.2 specular 0 roughness 0.2 }
}

// ---------------- Golem Body (use 'blob' to avoid metaball parse issues) ----------------
#declare Golem_Blob =
blob {
  threshold 0.62

  // torso / head
  sphere { <0.00, 1.20, 0.00>, 1.05, 1.15 }
  sphere { <0.00, 2.35, 0.05>, 0.78, 1.00 }

  // shoulders
  sphere { <-1.00, 1.80, 0.00>, 0.60, 0.95 }
  sphere { < 1.00, 1.80, 0.00>, 0.60, 0.95 }

  // arms (rounded, hanging)
  sphere { <-1.35, 1.30, 0.10>, 0.55, 0.95 }
  sphere { <-1.25, 0.85, 0.05>, 0.50, 0.95 }
  sphere { < 1.35, 1.30, 0.10>, 0.55, 0.95 }
  sphere { < 1.25, 0.85, 0.05>, 0.50, 0.95 }

  // legs (stumpy)
  sphere { <-0.40, 0.45, 0.00>, 0.62, 1.10 }
  sphere { < 0.40, 0.45, 0.00>, 0.62, 1.10 }
  sphere { <-0.35, 0.15, 0.05>, 0.58, 1.10 }
  sphere { < 0.35, 0.15, 0.05>, 0.58, 1.10 }

  texture { Mat_Body }
}

// ---------------- Scars / Dents (used as cutters) ----------------
#declare Chest_Crack =
union {
  // Jagged wedge-like opening (built from prisms)
  prism {
    linear_sweep
    linear_spline
    -0.55, 0.55,
    7,
    <-0.05, -0.85>, <0.25, -0.55>, <-0.05, -0.25>,
    <0.22,  0.05>, <-0.10, 0.30>, <0.20, 0.60>, <-0.10, 0.85>
    scale <0.85, 0.95, 0.80>
    translate <0.05, 1.35, -0.35>
  }
  prism {
    linear_sweep
    linear_spline
    -0.55, 0.55,
    6,
    <0.05, -0.80>, <0.30, -0.40>, <0.05, -0.10>,
    <0.28, 0.20>, <0.00, 0.55>, <0.15, 0.85>
    rotate <0,0,6>
    scale <0.85, 0.95, 0.80>
    translate <-0.08, 1.35, -0.35>
  }
}

#declare Back_Scar =
union {
  // long groove on the back (scar impression)
  cylinder { <0, 1.95, 0.55>, <0, 1.05, 0.55>, 0.18 }
  cylinder { <-0.18, 1.75, 0.56>, <-0.18, 1.15, 0.56>, 0.10 }
  cylinder { <0.18, 1.70, 0.56>, <0.18, 1.20, 0.56>, 0.11 }
  rotate <3,0,0>
}

#declare Face_Dents =
union {
  // nose-ish dent
  sphere { <0.00, 2.30, -0.55>, 0.13 }
  // mouth notch
  cylinder { <-0.20, 2.12, -0.62>, <0.20, 2.12, -0.62>, 0.07 }
  // a few small pits
  sphere { <0.35, 2.25, -0.53>, 0.08 }
  sphere { <-0.32, 2.28, -0.50>, 0.06 }
}

// ---------------- Inner light / eyes ----------------
#declare Inner_Core =
union {
  // emissive core visible through chest crack
  sphere { <0.00, 1.35, -0.05>, 0.55 texture { Mat_Glow } }
  sphere { <0.00, 1.60,  0.05>, 0.40 texture { Mat_Glow } }

  // a dimmer spill volume inside body
  sphere {
    <0.00, 1.20, 0.10>, 0.75
    texture {
      pigment { color rgb <1.00, 0.50, 0.20>*0.35 }
      finish  { diffuse 0.1 emission 0.55 specular 0 roughness 0.2 }
    }
  }
}

#declare Eye_Lights =
union {
  sphere { <-0.18, 2.42, -0.60>, 0.06 texture { Mat_EyeGlow } }
  sphere { < 0.18, 2.42, -0.60>, 0.06 texture { Mat_EyeGlow } }

  // subtle actual light sources at the eyes for sparkle
  light_source { <-0.18, 2.42, -0.60> color rgb <1.00, 0.95, 0.60>*0.35 }
  light_source { < 0.18, 2.42, -0.60> color rgb <1.00, 0.95, 0.60>*0.35 }
}

// ---------------- Final assembly ----------------
union {
  difference {
    object { Golem_Blob }

    // carve front crack opening
    object { Chest_Crack }

    // carve back scar groove
    object { Back_Scar }

    // facial dents
    object { Face_Dents }
  }

  // inner glowing core (inside the carved cavity)
  object { Inner_Core }

  // dark interior surfaces at openings
  object { Chest_Crack texture { Mat_Dark } }
  object { Back_Scar   texture { Mat_Dark } }
  object { Face_Dents  texture { Mat_Dark } }

  // glowing eyes
  object { Eye_Lights }

  translate <0, 0, 0>
}