// Cityscape: castle + old town block (fast, simple shading, warm soft lights)
#version 3.7;

global_settings {
  assumed_gamma 1.0
  max_trace_level 6
}

background { color rgb <0.70, 0.78, 0.90> }

// -------------------- Camera --------------------
camera {
  location <24, 16, -28>
  look_at  <0, 6.5, 0>
  angle 42
}

// -------------------- Lights (warm + soft shadows) --------------------
light_source {
  <40, 55, -45>
  color rgb <1.00, 0.88, 0.72>*1.05
  area_light <10,0,0>, <0,0,10>, 6, 6
  adaptive 1
  jitter
}
light_source {
  <-30, 28, -10>
  color rgb <1.00, 0.92, 0.80>*0.35
  area_light <8,0,0>, <0,0,8>, 5, 5
  adaptive 1
  jitter
}

// -------------------- Simple materials --------------------
#declare Mat_Stone   = finish { diffuse 0.85 specular 0.10 roughness 0.08 };
#declare Mat_Plaster = finish { diffuse 0.90 specular 0.06 roughness 0.10 };
#declare Mat_Roof    = finish { diffuse 0.85 specular 0.08 roughness 0.12 };
#declare Mat_Wood    = finish { diffuse 0.88 specular 0.05 roughness 0.20 };
#declare Mat_Ground  = finish { diffuse 0.90 specular 0.00 };

#declare C_Stone     = color rgb <0.72, 0.72, 0.74>;
#declare C_DarkStone = color rgb <0.45, 0.46, 0.48>;
#declare C_PlasterA  = color rgb <0.86, 0.82, 0.74>;
#declare C_PlasterB  = color rgb <0.80, 0.84, 0.86>;
#declare C_RoofRed   = color rgb <0.62, 0.25, 0.22>;
#declare C_RoofBrown = color rgb <0.40, 0.26, 0.18>;
#declare C_Wood      = color rgb <0.40, 0.28, 0.18>;
#declare C_Pave      = color rgb <0.58, 0.58, 0.60>;

// -------------------- Ground / plaza --------------------
plane {
  y, 0
  pigment { color rgb <0.82,0.82,0.84> }
  finish { Mat_Ground }
}

box {
  <-14, 0.001, -10>, <14, 0.06, 12>
  pigment { C_Pave }
  finish  { diffuse 0.92 specular 0.02 roughness 0.15 }
}

// -------------------- Helper macros --------------------
#macro House(Pos, W, D, H, RoofH, PlasterCol, RoofCol)
  union {
    // body
    box {
      <-W/2, 0, -D/2>, <W/2, H, D/2>
      pigment { PlasterCol }
      finish  { Mat_Plaster }
    }
    // timber band
    box {
      <-W/2, H*0.55, -D/2>, <W/2, H*0.60, D/2>
      pigment { C_Wood }
      finish  { Mat_Wood }
    }
    // simple gable roof (triangular prism)
    prism {
      linear_sweep
      linear_spline
      -D/2, D/2, 3,
      <-W/2, 0>, <0, RoofH>, <W/2, 0>
      pigment { RoofCol }
      finish  { Mat_Roof }
      translate <0, H, 0>
    }
    translate Pos
  }
#end

#macro Tower(Pos, R, H, StoneCol)
  union {
    cylinder { <0,0,0>, <0,H,0>, R
      pigment { StoneCol } finish { Mat_Stone }
    }
    // crenellation ring
    difference {
      cylinder { <0,H,0>, <0,H+0.55,0>, R*1.06 }
      cylinder { <0,H-0.05,0>, <0,H+0.65,0>, R*0.86 }
      // cut notches
      #local i = 0;
      #while (i < 8)
        box { <-0.35, H-0.2, -R*1.2>, <0.35, H+1.0, -R*0.2>
          rotate <0, i*45, 0>
        }
        #local i = i + 1;
      #end
      pigment { StoneCol } finish { Mat_Stone }
    }
    translate Pos
  }
#end

#macro Keep(Pos)
  union {
    // main keep block
    box {
      <-4.5, 0, -3.6>, <4.5, 11.0, 3.6>
      pigment { C_Stone } finish { Mat_Stone }
    }
    // corner buttresses
    box { <-4.9,0,-4.0>, <-4.5,9.5,-3.6> pigment{C_DarkStone} finish{Mat_Stone} }
    box { < 4.5,0,-4.0>, < 4.9,9.5,-3.6> pigment{C_DarkStone} finish{Mat_Stone} }
    box { <-4.9,0, 3.6>, <-4.5,9.5, 4.0> pigment{C_DarkStone} finish{Mat_Stone} }
    box { < 4.5,0, 3.6>, < 4.9,9.5, 4.0> pigment{C_DarkStone} finish{Mat_Stone} }

    // crenellations on keep
    difference {
      box { <-4.7, 11.0, -3.8>, <4.7, 11.8, 3.8> }
      box { <-4.2, 10.9, -3.3>, <4.2, 12.2, 3.3> }
      #local j = -4;
      #while (j <= 4)
        box { <j-0.25, 10.9, -4.2>, <j+0.25, 12.3, -3.2> }
        box { <j-0.25, 10.9,  3.2>, <j+0.25, 12.3,  4.2> }
        #local j = j + 1;
      #end
      pigment { C_Stone } finish { Mat_Stone }
    }

    // towers
    Tower(<-6.6,0,-5.4>, 1.7, 13.5, C_Stone)
    Tower(< 6.6,0,-5.4>, 1.7, 13.5, C_Stone)
    Tower(<-6.6,0, 5.4>, 1.7, 13.0, C_Stone)
    Tower(< 6.6,0, 5.4>, 1.7, 13.0, C_Stone)

    // small inner roof slab
    box { <-3.8, 11.0, -2.8>, <3.8, 11.35, 2.8>
      pigment { color rgb <0.55,0.55,0.56> }
      finish  { diffuse 0.90 specular 0.03 roughness 0.12 }
    }

    translate Pos
  }
#end

// -------------------- Old town ring (dense houses) --------------------
#declare BlockY = 0;

// Front row (towards camera)
House(<-11,BlockY,  6>, 4.6, 3.8, 5.0, 2.2, C_PlasterA, C_RoofRed)
House(< -6,BlockY,  6>, 4.0, 3.6, 6.2, 2.6, C_PlasterB, C_RoofBrown)
House(< -1,BlockY,  6>, 4.8, 3.7, 5.6, 2.3, C_PlasterA, C_RoofRed)
House(<  4,BlockY,  6>, 4.1, 3.8, 6.7, 2.8, C_PlasterB, C_RoofBrown)
House(<  9,BlockY,  6>, 4.7, 3.9, 5.3, 2.1, C_PlasterA, C_RoofRed)

// Side rows
House(<-13,BlockY,  1>, 4.0, 4.2, 6.4, 2.5, C_PlasterB, C_RoofBrown)
House(<-13,BlockY, -4>, 4.4, 4.2, 5.4, 2.1, C_PlasterA, C_RoofRed)

House(< 13,BlockY,  1>, 4.3, 4.3, 6.1, 2.4, C_PlasterA, C_RoofBrown)
House(< 13,BlockY, -4>, 4.1, 4.2, 5.2, 2.0, C_PlasterB, C_RoofRed)

// Back row (behind keep)
House(<-10,BlockY, -8>, 4.8, 4.0, 5.8, 2.4, C_PlasterB, C_RoofRed)
House(< -4,BlockY, -8>, 4.2, 4.0, 6.6, 2.7, C_PlasterA, C_RoofBrown)
House(<  2,BlockY, -8>, 4.6, 4.0, 5.5, 2.2, C_PlasterB, C_RoofRed)
House(<  8,BlockY, -8>, 4.4, 4.0, 6.0, 2.5, C_PlasterA, C_RoofBrown)

// -------------------- Central castle/keep --------------------
Keep(<0,0,-1.0>)

// -------------------- Street arch + small bridge detail --------------------
difference {
  // arch block
  box { <-2.6, 0, 2.2>, <2.6, 3.2, 4.6> }
  // arch hole
  cylinder { <0,0,3.4>, <0,3.2,3.4>, 1.35 rotate <90,0,0> translate <0,1.35,0> }
  pigment { C_DarkStone }
  finish  { Mat_Stone }
}

box {
  <-4.8, 0.12, 1.1>, <4.8, 0.36, 2.1>
  pigment { color rgb <0.52,0.52,0.54> }
  finish  { diffuse 0.9 specular 0.02 roughness 0.2 }
}

// Low parapets
box { <-4.8, 0.36, 1.1>, <-4.4, 0.95, 2.1> pigment{C_DarkStone} finish{Mat_Stone} }
box { < 4.4, 0.36, 1.1>, < 4.8, 0.95, 2.1> pigment{C_DarkStone} finish{Mat_Stone} }

// -------------------- Subtle distant backdrop blocks (city silhouette) --------------------
#declare k = -3;
#while (k <= 3)
  box {
    <-30 + k*9, 0, 18>, <-24 + k*9, 7 + (k+3)*0.6, 26>
    pigment { color rgb <0.72,0.76,0.82> }
    finish { diffuse 0.85 specular 0.02 roughness 0.2 }
  }
  #declare k = k + 1;
#end