From 1ed4d9b75b90e84c6293ca51097dc0ac2a0421cb Mon Sep 17 00:00:00 2001
From: Alexandre <cpge.aboujaib@gmail.com>
Date: Wed, 6 Nov 2024 22:25:29 +0100
Subject: [PATCH] added 1st movement algorithm

---
 bin/main       | Bin 184393 -> 222033 bytes
 input_test.txt |  10 +--
 main.cmi       | Bin 4065 -> 5677 bytes
 main.cmo       | Bin 11964 -> 20192 bytes
 main.ml        | 235 +++++++++++++++++++++++++++++++++++++++++--------
 tp.txt         |  15 ++++
 6 files changed, 216 insertions(+), 44 deletions(-)
 create mode 100644 tp.txt

diff --git a/bin/main b/bin/main
index a2cd4de507b1be7a9330edf981f16d1fc8285800..f5e98d685b9688914bede9a9f3757ca7389fb9bc 100755
GIT binary patch
delta 35512
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diff --git a/input_test.txt b/input_test.txt
index 9f6219b..7d9cfdd 100644
--- a/input_test.txt
+++ b/input_test.txt
@@ -1,19 +1,19 @@
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 5
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 2 0 1 4 3 2 2 2
 10 5 2 0 2 3 2 3
 5 5 3 5 1 10 2 3
diff --git a/main.cmi b/main.cmi
index 65809bd7ccbe24c3e95e21610ec3bc1e260f2317..dee3dc1ac32c406b20e6ed99ac0927ae44ab9c6f 100644
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diff --git a/main.ml b/main.ml
index 4ad2e2c..234bc4a 100644
--- a/main.ml
+++ b/main.ml
@@ -1,16 +1,26 @@
-let debug = false ;;
+(* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
+(* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
 
-type bomb = {
+let debug = false ;;
+let fatal_time = 1.0 ;;
+
+(* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
+(* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
+
+type pt = {
   x : int ;
   y : int ;
+}
+
+type bomb = {
+  xy : pt ;
   size : int ;
   det_time : float ;
 }
 
 type player = {
   id : int ;
-  x : int ;
-  y : int ;
+  xy : pt ;
   nspeed : int ;
   nbomb_atonce : int ;
   bomb_radius : int ;
@@ -19,22 +29,24 @@ type player = {
 }
 
 type boost = {
-  x : int ;
-  y : int ;
+  xy : pt ;
   spec : int ;
 }
 
-let default_bomb = {
+let default_point = {
   x = 0 ;
   y = 0 ;
+}
+
+let default_bomb = {
+  xy = default_point ;
   size = 0 ;
   det_time = 0. ;
 } 
 
 and default_player = {
   id = 0 ;
-  x = 0 ;
-  y = 0 ;
+  xy = default_point ;
   nspeed = 0 ;
   nbomb_atonce = 0 ;
   bomb_radius = 0 ;
@@ -43,8 +55,7 @@ and default_player = {
 }
 
 and default_boost = {
-  x = 0 ;
-  y = 0 ;
+  xy = default_point ;
   spec = 0 ;
 } 
 
@@ -62,22 +73,46 @@ type game_data = {
   mutable boosts : boost array ;
 }
 
-type danger = Powerup | Safe | Danger | Fatal | Blocked ;;
+type danger = Safe | Danger | Fatal | Blocked ;;
 
 let int_of_danger = function
   | Safe -> 0
   | Danger -> 1
-  | Powerup -> 2
-  | Fatal -> 3
-  | Blocked -> 4 ;;
+  | Fatal -> 2
+  | Blocked -> 3 ;;
 
 let danger_of_int = function
   | 0 -> Safe
   | 1 -> Danger
-  | 2 -> Powerup
-  | 3 -> Fatal
+  | 2 -> Fatal
   | _ -> Blocked ;;
 
+type moveType = EscapeDeath | BlowUpCrates | KillPlayers | ClaimLand ;;
+
+exception ReturnInt of int ;;
+
+(* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
+(* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
+
+let equal_pt (p1 : pt) (p2 : pt) =
+  p1.x = p2.x && p1.y = p2.y ;;
+
+let swap arr i j =
+  let temp = arr.(i) in
+  arr.(i) <- arr.(j) ;
+  arr.(j) <- temp ;;
+
+let is_valid i j len hei =
+  i >= 0 && j >= 0 && i < len && j < hei ;;
+
+let print_direction = function
+  | 0 -> Printf.printf "NORTH "
+  | 1 -> Printf.printf "EAST  "
+  | 2 -> Printf.printf "SOUTH "
+  | 3 -> Printf.printf "WEST  " 
+  | 4 -> Printf.printf "STILL "
+  | _-> failwith "ERROR : invalid direction" ;;
+
 (* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
 (* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
 
@@ -95,15 +130,15 @@ let print_game_data (gd : game_data) =
   done ;
   Printf.printf "Bombs (%d) : \n" gd.nbombs ;
   for b = 0 to gd.nbombs -1 do
-    Printf.printf "    [Bomb] (at %d %d) (of size %d) (blowing up at %f)\n" gd.bombs.(b).x gd.bombs.(b).y gd.bombs.(b).size gd.bombs.(b).det_time ;
+    Printf.printf "    [Bomb] (at %d %d) (of size %d) (blowing up at %f)\n" gd.bombs.(b).xy.x gd.bombs.(b).xy.y gd.bombs.(b).size gd.bombs.(b).det_time ;
   done;
   Printf.printf "Players (%d) : \n" gd.nplayers ;
   for b = 0 to gd.nplayers -1 do
-    Printf.printf "    [Player %d] (at %d %d) (holding %d %d %d %d %d)\n" gd.players.(b).id gd.players.(b).x gd.players.(b).y gd.players.(b).nspeed gd.players.(b).nbomb_atonce  gd.players.(b).bomb_radius gd.players.(b).ndash gd.players.(b).ntraps ;
+    Printf.printf "    [Player %d] (at %d %d) (holding %d %d %d %d %d)\n" gd.players.(b).id gd.players.(b).xy.x gd.players.(b).xy.y gd.players.(b).nspeed gd.players.(b).nbomb_atonce  gd.players.(b).bomb_radius gd.players.(b).ndash gd.players.(b).ntraps ;
   done;
   Printf.printf "Boosts (%d) : \n" gd.nboosts ;
   for b = 0 to gd.nboosts -1 do
-    Printf.printf "    [Boost] (at %d %d) (of type %d)\n" gd.boosts.(b).x gd.boosts.(b).y gd.boosts.(b).spec ;
+    Printf.printf "    [Boost] (at %d %d) (of type %d)\n" gd.boosts.(b).xy.x gd.boosts.(b).xy.y gd.boosts.(b).spec ;
   done;;
 
 let print_danger_levels (map : danger array array) =
@@ -115,7 +150,6 @@ let print_danger_levels (map : danger array array) =
         | Safe -> Printf.printf ". "
         | Danger -> Printf.printf "! "
         | Fatal -> Printf.printf "X "
-        | Powerup -> Printf.printf "P "
     done;
     Printf.printf "\n"
   done ;;
@@ -179,7 +213,7 @@ let parse_input (str : string) =
       and last = ref 0 in
       let dat = int_n_of_string psd 3 last in
       let dtime = Float.of_string (String.init (String.length psd - !last) (fun i -> psd.[i + !last])) in
-      res.bombs.(b) <- {x = dat.(0) ; y = dat.(1) ; size = dat.(2) ; det_time = dtime ;
+      res.bombs.(b) <- {xy = {x = dat.(0) ; y = dat.(1) ;} ; size = dat.(2) ; det_time = dtime ;
       }
     done;
 
@@ -190,7 +224,7 @@ let parse_input (str : string) =
     res.players <- Array.make res.nplayers default_player ;
     for p = 0 to res.nplayers -1 do
       let dat = int_n_of_string (input_line ptr) 8 useless in
-      res.players.(p) <- {id = dat.(2) ; x = dat.(0) ; y = dat.(1) ; nspeed = dat.(3) ; nbomb_atonce = dat.(4) ; bomb_radius = dat.(5) ; ndash = dat.(6) ; ntraps = dat.(7) ;}
+      res.players.(p) <- {id = dat.(2) ; xy = {x = dat.(0) ; y = dat.(1) ;} ; nspeed = dat.(3) ; nbomb_atonce = dat.(4) ; bomb_radius = dat.(5) ; ndash = dat.(6) ; ntraps = dat.(7) ;}
     done;
 
     (* boosts *)
@@ -200,7 +234,7 @@ let parse_input (str : string) =
     res.boosts <- Array.make res.nboosts default_boost ;
     for p = 0 to res.nboosts -1 do
       let dat = int_n_of_string (input_line ptr) 3 useless in
-      res.boosts.(p) <- {x = dat.(0) ; y = dat.(1) ; spec = dat.(2)}
+      res.boosts.(p) <- {xy = {x = dat.(0) ; y = dat.(1) ;} ; spec = dat.(2)}
     done;
         
     if debug then Printf.printf "Done!\n" ;
@@ -211,13 +245,17 @@ let parse_input (str : string) =
       close_in ptr ;
       failwith "cannot happen unless something is wrong" ;;
 
+(* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
+(* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
+
 let warn_level (b : bomb) (ct : float) = match (b.det_time -. ct) with
-  | k when k < 1.0 -> Fatal ;
+  | k when k < fatal_time -> Fatal ;
   | _ -> Danger ;;
 
 let danger_priority (p1 : danger) (p2 : danger) = 
   danger_of_int (max (int_of_danger p1) (int_of_danger p2)) ;;
 
+let order = [|(1, 0); (-1, 0); (0, 1); (0, -1)|] ;;
 let evaluate_dangers (gd : game_data) =
   let lines = Array.length gd.laby
   and cols = Array.length gd.laby.(0) in
@@ -226,31 +264,150 @@ let evaluate_dangers (gd : game_data) =
   (* add solid blocks *)
   for l = 0 to lines -1 do
     for c = 0 to cols -1 do
-      if gd.laby.(l).(c) = 1 || gd.laby.(l).(c) = 1 then
+      if gd.laby.(l).(c) = 1 || gd.laby.(l).(c) = 2 then
         res.(l).(c) <- Blocked ;
     done
   done ;
 
-  (* add bomb tiles *)
+  (* sort bombs based on detonation time *)
   for b = 0 to gd.nbombs -1 do
-    let dgr = warn_level gd.bombs.(b) gd.dt in
-    for off = -gd.bombs.(b).size to gd.bombs.(b).size do
-      let ln = min (lines -1) (max 0 (gd.bombs.(b).x + off))
-      and cl = min (cols -1) (max 0 (gd.bombs.(b).y + off)) in
-      if res.(ln).(gd.bombs.(b).y) = Safe then
-        res.(ln).(gd.bombs.(b).y) <- danger_priority (res.(ln).(gd.bombs.(b).y)) dgr ;
-      if res.(gd.bombs.(b).x).(cl) = Safe then
-        res.(gd.bombs.(b).x).(cl) <- danger_priority (res.(gd.bombs.(b).x).(cl)) dgr ;
+    let m = ref gd.bombs.(b).det_time
+    and im = ref b in
+    for j = b+1 to gd.nbombs -1 do
+      if gd.bombs.(j).det_time < !m then begin
+        m := gd.bombs.(j).det_time ;
+        im := j ;
+      end
     done;
+    swap gd.bombs b (!im) ;
   done;
 
-  (* add powerups *)
-  for p = 0 to gd.nboosts -1 do
-    res.(gd.boosts.(p).x).(gd.boosts.(p).y) <- Powerup ;
+  (* add bomb tiles *)
+  let exploded = Hashtbl.create 12 in
+  for b = 0 to gd.nbombs -1 do
+    let dgr = warn_level gd.bombs.(b) gd.dt in
+    let halt = ref false in
+
+    let bx = gd.bombs.(b).xy.x
+    and by = gd.bombs.(b).xy.y in
+
+    for dir = 0 to 3 do
+      for w = 0 to gd.bombs.(b).size do
+        let cx = bx + w*(fst order.(dir)) 
+        and cy = by + w*(snd order.(dir)) in
+        if not !halt && is_valid (cx) (cy) lines cols then begin
+          if gd.laby.(cx).(cy) = 1 then (* bedrock *)
+            halt := true ;
+          if gd.laby.(cx).(cy) = 2 && Hashtbl.find_opt exploded (cx, cy) = None then begin (* unexploded crate *)
+            halt := true ;
+            res.(cx).(cy) <- danger_priority res.(cx).(cy) dgr ;
+            Hashtbl.add exploded (cx, cy) 1 
+          end
+          else begin
+            res.(cx).(cy) <- danger_priority res.(cx).(cy) dgr ;
+          end
+        end
+      done;
+      halt := false ;
+    done
   done;
 
   res ;;
 
+(* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
+(* ---------------------------------------------------------------------------------------------------------------------------------------------------- *)
+
+let is_safe = function
+  | Safe | Danger -> true
+  | Fatal | Blocked -> false ;;
+
+let move_safe (gd : game_data) (dgs : danger array array) =
+  (* use this whenever you are standing on a non-safe tile *)
+  let pid = gd.player_id in
+
+  let lines = Array.length gd.laby
+  and cols = Array.length gd.laby.(0) in
+
+  (* BFS to find the nearest safe spot (if it exists) *)
+  try
+    let q = Queue.create () in
+    let visited = Hashtbl.create 100 in
+
+    (* 1. try not to walk on fatal tiles *)
+    if debug then Printf.printf "Attempt 1/3...\n";
+    let (cx, cy) = (gd.players.(pid).xy.x, gd.players.(pid).xy.y) in
+    if cx <> 0         && is_safe dgs.(cx-1).(cy) then (* North *) Queue.add (cx-1, cy, 0) q ;
+    if cx <> lines -1  && is_safe dgs.(cx+1).(cy) then (* South *) Queue.add (cx+1, cy, 2) q ;
+    if cy <> 0         && is_safe dgs.(cx).(cy-1) then (* West *) Queue.add (cx, cy-1, 3) q ;
+    if cy <> cols -1   && is_safe dgs.(cx).(cy+1) then (* East *) Queue.add (cx, cy+1, 1) q ;
+
+    while not (Queue.is_empty q) do
+      let (cx, cy, dir) = Queue.pop q in
+      Hashtbl.add visited (cx, cy, 1) 1 ;
+      if dgs.(cx).(cy) = Safe then
+        raise (ReturnInt dir)
+      else begin
+        (* add neighbors *)
+        if cx <> 0         && Hashtbl.find_opt visited (cx-1, cy, 1) = None && is_safe dgs.(cx-1).(cy) then (* North *) Queue.add (cx-1, cy, dir) q ;
+        if cx <> lines -1  && Hashtbl.find_opt visited (cx+1, cy, 1) = None && is_safe dgs.(cx+1).(cy) then (* South *) Queue.add (cx+1, cy, dir) q ;
+        if cy <> 0         && Hashtbl.find_opt visited (cx, cy-1, 1) = None && is_safe dgs.(cx).(cy-1) then (* West *) Queue.add (cx, cy-1, dir) q ;
+        if cy <> cols -1   && Hashtbl.find_opt visited (cx, cy+1, 1) = None && is_safe dgs.(cx).(cy+1) then (* East *) Queue.add (cx, cy+1, dir) q ;
+      end
+    done;
+
+    (* 2. find the path that get you off fatal tiles ASAP *)
+    if debug then Printf.printf "Attempt 2/3...\n";
+    if cx <> 0         && dgs.(cx-1).(cy) <> Blocked then (* North *) Queue.add (cx-1, cy, 0) q ;
+    if cx <> lines -1  && dgs.(cx+1).(cy) <> Blocked then (* South *) Queue.add (cx+1, cy, 2) q ;
+    if cy <> 0         && dgs.(cx).(cy-1) <> Blocked then (* West *) Queue.add (cx, cy-1, 3) q ;
+    if cy <> cols -1   && dgs.(cx).(cy+1) <> Blocked then (* East *) Queue.add (cx, cy+1, 1) q ;
+
+    while not (Queue.is_empty q) do
+      let (cx, cy, dir) = Queue.pop q in
+      Hashtbl.add visited (cx, cy, 2) 1 ;
+      if dgs.(cx).(cy) = Safe then
+        raise (ReturnInt dir)
+      else begin
+        (* add neighbors *)
+        if cx <> 0         && Hashtbl.find_opt visited (cx-1, cy, 2) = None && dgs.(cx-1).(cy) <> Blocked then (* North *) Queue.add (cx-1, cy, dir) q ;
+        if cx <> lines -1  && Hashtbl.find_opt visited (cx+1, cy, 2) = None && dgs.(cx+1).(cy) <> Blocked then (* South *) Queue.add (cx+1, cy, dir) q ;
+        if cy <> 0         && Hashtbl.find_opt visited (cx, cy-1, 2) = None && dgs.(cx-1).(cy) <> Blocked then (* West *) Queue.add (cx, cy-1, dir) q ;
+        if cy <> cols -1   && Hashtbl.find_opt visited (cx, cy+1, 2) = None && dgs.(cx).(cy+1) <> Blocked then (* East *) Queue.add (cx, cy+1, dir) q ;
+      end
+    done;
+
+    (* 3. no safe tile within reach (very rare), look out for warning *)
+    if debug then Printf.printf "Attempt 3/3...\n";
+    if cx <> 0         && dgs.(cx-1).(cy) <> Blocked then (* North *) Queue.add (cx-1, cy, 0) q ;
+    if cx <> lines -1  && dgs.(cx+1).(cy) <> Blocked then (* South *) Queue.add (cx+1, cy, 2) q ;
+    if cy <> 0         && dgs.(cx).(cy-1) <> Blocked then (* West *) Queue.add (cx, cy-1, 3) q ;
+    if cy <> cols -1   && dgs.(cx).(cy+1) <> Blocked then (* East *) Queue.add (cx, cy+1, 1) q ;
+
+    while not (Queue.is_empty q) do
+      let (cx, cy, dir) = Queue.pop q in
+      Hashtbl.add visited (cx, cy, 3) 1 ;
+      if dgs.(cx).(cy) = Danger then
+        raise (ReturnInt dir)
+      else begin
+        (* add neighbors *)
+        if cx <> 0         && Hashtbl.find_opt visited (cx-1, cy, 3) = None && dgs.(cx-1).(cy) <> Blocked then (* North *) Queue.add (cx-1, cy, dir) q ;
+        if cx <> lines -1  && Hashtbl.find_opt visited (cx+1, cy, 3) = None && dgs.(cx+1).(cy) <> Blocked then (* South *) Queue.add (cx+1, cy, dir) q ;
+        if cy <> 0         && Hashtbl.find_opt visited (cx, cy-1, 3) = None && dgs.(cx-1).(cy) <> Blocked then (* West *) Queue.add (cx, cy-1, dir) q ;
+        if cy <> cols -1   && Hashtbl.find_opt visited (cx, cy+1, 3) = None && dgs.(cx).(cy+1) <> Blocked then (* East *) Queue.add (cx, cy+1, dir) q ;
+      end
+    done;
+
+    (* you're probably dead if the code reaches here *)
+    if debug then Printf.printf "Attempt F...\n";
+    4
+  with
+    | ReturnInt k -> k ;;
+
 let game_d = parse_input "input_test.txt" ;;
+let dangers = evaluate_dangers game_d ;;
 print_game_data game_d ;;
-print_danger_levels (evaluate_dangers game_d)
\ No newline at end of file
+print_danger_levels dangers ;;
+
+Printf.printf "move at ";;
+print_direction (move_safe game_d dangers) ;;
+Printf.printf "\n" ;;
\ No newline at end of file
diff --git a/tp.txt b/tp.txt
new file mode 100644
index 0000000..adbdfa7
--- /dev/null
+++ b/tp.txt
@@ -0,0 +1,15 @@
+0 0 0 0 0 0 0 0 0 0 0
+0 0 0 0 0 0 0 0 0 0 0
+0 0 0 0 0 0 0 0 0 0 0
+0 0 0 0 0 0 0 0 0 0 0
+3 3 3 0 0 0 0 0 4 4 0
+0 0 0 0 0 0 0 0 0 0 0
+0 0 0 0 0 0 0 3 3 0 0
+
+0 0 0 0 0 0 0 0 0 0 0
+0 1 0 1 2 1 2 1 2 1 0
+0 0 0 2 2 2 2 2 0 0 0
+0 1 2 1 2 1 2 1 2 1 2
+3 3 3 0 0 0 2 2 4 4 0
+0 1 0 1 0 1 0 1 0 1 0
+0 0 0 2 2 2 2 3 3 2 0
\ No newline at end of file