(* The Zelus compiler, version 2.2-dev
  (2025-06-16-15:24) *)
open Common
open Ztypes
open Solvers

let g = 9.81

let y0 = 50.

let y'0 = 0.

type ('g , 'f , 'e , 'd , 'c , 'b , 'a) _ball =
  { mutable major_50 : 'g ;
    mutable h_60 : 'f ;
    mutable h_58 : 'e ;
    mutable i_56 : 'd ;
    mutable x_55 : 'c ; mutable y'_52 : 'b ; mutable y_51 : 'a }

let ball (cstate_74:Ztypes.cstate) =

  let ball_alloc _ =
    cstate_74.cmax <- (+) cstate_74.cmax  2 ;
    cstate_74.zmax <- (+) cstate_74.zmax  1;
    { major_50 = false ;
      h_60 = 42. ;
      h_58 = (42.:float) ;
      i_56 = (false:bool) ;
      x_55 = { zin = false; zout = 1. } ;
      y'_52 = { pos = 42.; der = 0. } ; y_51 = { pos = 42.; der = 0. } } in
  let ball_step self ((_time_49:float) , ((y0_48:float) , (y'0_47:float))) =
    Printf.printf "STEP (%d)\n" cstate_74.cindex;
    ((let (cindex_75:int) = cstate_74.cindex in
      let cpos_77 = ref (cindex_75:int) in
      let (zindex_76:int) = cstate_74.zindex in
      let zpos_78 = ref (zindex_76:int) in
      cstate_74.cindex <- (+) cstate_74.cindex  2 ;
      cstate_74.zindex <- (+) cstate_74.zindex  1 ;
      self.major_50 <- cstate_74.major ;
      (if cstate_74.major then
       for i_1 = cindex_75 to 1 do Zls.set cstate_74.dvec  i_1  0. done
       else ((self.y'_52.pos <- Zls.get cstate_74.cvec  !cpos_77 ;
              cpos_77 := (+) !cpos_77  1) ;
             (self.y_51.pos <- Zls.get cstate_74.cvec  !cpos_77 ;
              cpos_77 := (+) !cpos_77  1))) ;
      (let (result_79:float) =
           let h_59 = ref (infinity:float) in
           let encore_57 = ref (false:bool) in
           (if self.i_56 then self.y'_52.pos <- y'0_47) ;
           (let (l_54:float) = self.y'_52.pos in
            (begin match self.x_55.zin with
                   | true ->
                       encore_57 := true ;
                       self.y'_52.pos <- ( *. ) (-0.8)  l_54 | _ -> ()  end)
            ;
            self.h_58 <- (if !encore_57 then 0. else infinity) ;
            h_59 := min !h_59  self.h_58 ;
            self.h_60 <- !h_59 ;
            (if self.i_56 then self.y_51.pos <- y0_48) ;
            self.i_56 <- false ;
            self.x_55.zout <- (~-.) self.y_51.pos ;
            self.y'_52.der <- (~-.) g ;
            self.y_51.der <- self.y'_52.pos ; self.y_51.pos) in
       cstate_74.horizon <- min cstate_74.horizon  self.h_60 ;
       cpos_77 := cindex_75 ;
       (if cstate_74.major then
        (((Printf.printf "idx: %d\n" !cpos_77;
           Zls.set cstate_74.cvec  !cpos_77  self.y'_52.pos ;
           cpos_77 := (+) !cpos_77  1) ;
          (Zls.set cstate_74.cvec  !cpos_77  self.y_51.pos ;
           cpos_77 := (+) !cpos_77  1)) ; ((self.x_55.zin <- false)))
        else (((self.x_55.zin <- Zls.get_zin cstate_74.zinvec  !zpos_78 ;
                zpos_78 := (+) !zpos_78  1)) ;
              zpos_78 := zindex_76 ;
              ((Zls.set cstate_74.zoutvec  !zpos_78  self.x_55.zout ;
                zpos_78 := (+) !zpos_78  1)) ;
              ((Zls.set cstate_74.dvec  !cpos_77  self.y'_52.der ;
                cpos_77 := (+) !cpos_77  1) ;
               (Zls.set cstate_74.dvec  !cpos_77  self.y_51.der ;
                cpos_77 := (+) !cpos_77  1)))) ; result_79)):float) in
  let ball_reset self  =
    (self.i_56 <- true:unit) in
  Node { alloc = ball_alloc; step = ball_step ; reset = ball_reset }
type ('f , 'e , 'd , 'c , 'b , 'a) _main =
  { mutable main_ball : 'f ;
    mutable main_major : 'e ;
    mutable h_72 : 'd; mutable i_70 : 'c; mutable h : 'b;
    mutable t_63 : 'a }

let main cs =
  let Node
    { alloc = ball_alloc;
      step = ball_step;
      reset = ball_reset } = ball cs in

  let main_alloc _ =
    cs.cmax <- cs.cmax + 1;
    { main_major = false;
      h_72 = 42.0; i_70 = false; h = 42.0;
      t_63 = { pos = 42.; der = 0. };
      main_ball = ball_alloc () } in

  let main_step self (time, ()) =
    let cindex = cs.cindex in
    let cpos = ref cindex in
    Printf.printf "main:cindex: %d\n" cs.cindex;
    cs.cindex <- cs.cindex + 1;
    self.main_major <- cs.major;
    if cs.major then for i = cindex to 0 do Zls.set cs.dvec i 0. done
    else begin self.t_63.pos <- Zls.get cs.cvec !cpos; cpos := !cpos + 1 end;
    let result =
      if self.i_70 then self.h <- time;
      let z = self.main_major && (time >= self.h) in
      if z then self.h <- self.h +. 0.01;
      self.h_72 <- min infinity self.h;
      self.i_70 <- false;
      self.t_63.der <- 1.;
      let y_64 = ball_step self.main_ball (time, (y0, y'0)) in
      if z then begin
        print_float self.t_63.pos;
        print_string "\t";
        print_float y_64;
        print_newline ()
      end;
      Bigarray.(Array1.create Float64 c_layout 0) in
    cs.horizon <- min cs.horizon self.h_72;
    cpos := cindex;
    if cs.major then Zls.set cs.cvec !cpos self.t_63.pos
                else Zls.set cs.dvec !cpos self.t_63.der;
    result in

  let main_reset self =
    self.i_70 <- true;
    self.t_63.pos <- 0.;
    ball_reset self.main_ball in

  Node { alloc = main_alloc; step = main_step ; reset = main_reset }