added procedural generation

display.ml

@@ -142,7 +142,7 @@ type pt_2d = {mutable x : float ; mutable y : float} ;;
 type coloredCube = {cube : pt_3d array ; red : int ; green : int ; blue : int} ;;
 
 let dyn_create i =
-  {tab = Array.make 100 i ; len = 0 ; memlen = 100} ;;
+  {tab = Array.make 25 i ; len = 0 ; memlen = 25} ;;
 
 let dyn_append arr elt =
   let fct x =
@@ -152,8 +152,6 @@ let dyn_append arr elt =
       arr.tab.(0)
   in
   if arr.len = arr.memlen then begin
-    Stdlib.print_endline "resized";
-    Unix.sleepf 0.5;
     let newarr = Array.init (2 * arr.memlen) fct in
     arr.memlen <- 2 * arr.memlen;
     arr.tab <- newarr
@@ -316,31 +314,6 @@ let convex_3d (p1 : pt_3d) (p2 : pt_3d) theta maxtheta =
     z = (1. -. ratio) *. p1.z +. ratio *. p2.z
   } ;;
 
-
-
-(* 
-----\\ WARNING : THIS BIT YIELDS A SEGMENTATION FAULT //-----
-
-exception Out_of_bounds ;;
-let get_single_pt pt =
-  try
-    Graphics.point_color (fst pt) (snd pt)
-  with
-    | Graphics.Graphic_failure _ -> raise Out_of_bounds ;;
-
-let is_hidden (rect : (int * int) array) =
-  try
-    let midpt = ((fst rect.(0) + fst rect.(1) + fst rect.(2) + fst rect.(3))/4, (snd rect.(0) + snd rect.(1) + snd rect.(2) + snd rect.(3))/4) in
-    let color_BL = get_single_pt rect.(0)
-    and color_BR = get_single_pt rect.(1)
-    and color_TL = get_single_pt rect.(2)
-    and color_TR = get_single_pt rect.(3)
-    and color_C = get_single_pt midpt in
-    (color_BL = 0) || (color_BR = 0) || (color_TL = 0) || (color_TR = 0) || (color_C = 0)
-  with
-    | Out_of_bounds -> false ;;
-*)
-
 let ctc_one x =
   if x >= 0 then
     x / chunk_size
@@ -524,12 +497,12 @@ let draw_cube_p (cube : pt_3d array) (hash : (int * int * int, coloredCube dynam
     for i = 0 to 5 do
       if draw_faces.(i) && draw_faces_2.(i) then begin
         let light = max (0.) (1. -. (distances.(i)) /. 12.5) in
-        (*let face_R = int_of_float ((float_of_int r) *. light)
+        let face_R = int_of_float ((float_of_int r) *. light)
         and face_G = int_of_float ((float_of_int g) *. light)
         and face_B = int_of_float ((float_of_int b) *. light) in
         set_color (rgb face_R face_G face_B);
-        fill_poly order.(i);*)
-        draw_texture order.(i) stone light ;
+        fill_poly order.(i);
+        (*draw_texture order.(i) stone light ;*)
         set_color black;
         draw_poly_line order.(i);
       end
@@ -818,23 +791,6 @@ let chunkify_2 laby sz =
     done
   done;
 
-  (*
-  let s = ref 0 in
-  for i = 0 to 2 do
-    for j = 0 to 2 do
-      for k = 0 to 2 do
-        let nc = ((Hashtbl.find cubes (i, j, k)).len) in
-        Printf.printf "len for (%d, %d, %d) : %d" i j k nc;
-        s := !s + nc;
-        Stdlib.print_endline " "
-      done
-    done
-  done;
-  Printf.printf "s = %d" !s;
-  Stdlib.print_endline " ";
-  *)
-
-  (*Unix.sleepf 100.0;*)
   cubes ;;
 
 let chunkify laby sz = 
@@ -1010,10 +966,30 @@ let rec move_cam_hash_2 hash cx cy cz b c =(* Printf.printf "[%b]" b; Stdlib.pri
   | 'e' -> camera_angle_y := !camera_angle_y - 30
   | _ -> () ;;
 
+let initialize_chunk hash ch_x ch_y ch_z =
+  let dyna = dyn_create {cube = create_cube 0 0 0 1; red = 33; green = 33; blue = 22} in
+  for i = 0 to 3 do
+    for j = 0 to 3 do
+      dyn_append dyna {cube = create_cube (4*ch_x +i) (4*ch_y + (i + j) mod 4) (4*ch_z+j) 1; red = 32; green = 32; blue = 200};
+    done
+  done;
+  Hashtbl.add hash (ch_x, ch_y, ch_z) dyna ;;
+
+let initialize_flat hash ch_x ch_y ch_z =
+  let dyna = dyn_create {cube = create_cube 0 0 0 1; red = 33; green = 33; blue = 22} in
+  for i = 0 to 3 do
+    for j = 0 to 3 do
+      dyn_append dyna {cube = create_cube (4*ch_x +i) (4*ch_y) (4*ch_z+j) 1; red = 32; green = 222; blue = 32};
+    done
+  done;
+  Hashtbl.add hash (ch_x, ch_y, ch_z) dyna ;;
+
 let manage_unexisting_chunk hash ch_x ch_y ch_z screen_wd screen_ht fov =
   try
     draw_multiples_cubes_colored_hash (Hashtbl.find hash (ch_x, ch_y, ch_z)) hash screen_wd screen_ht fov
   with
+    | Not_found when ch_y = (-1)-> initialize_chunk hash ch_x ch_y ch_z 
+    | Not_found when ch_y = (-2)-> initialize_flat hash ch_x ch_y ch_z 
     | Not_found -> () ;;
 
 let render_chunks hash camx camy camz ch_distance screen_wd screen_ht fov =