(scl 4)

(load "@lib/clang.l")

(clang "structs" '("-lraylib")
       (DrawCube (pos w l h color) PilDrawCube NIL (cons (car pos) -1.0)
		 (cons (cadr pos) -1.0)
		 (cons (caddr pos) -1.0)
		 (cons w -1.0)
		 (cons l -1.0)
		 (cons h -1.0)
		 color)
       (BeginMode3D (pos target) PilBeginMode3D NIL (cons (car pos) -1.0)
		    (cons (cadr pos) -1.0)
		    (cons (caddr pos) -1.0)
		    (cons (car target) -1.0)
		    (cons (cadr target) -1.0)
		    (cons (caddr target) -1.0) ) )

#include <stdio.h>
#include "raylib.h"

void
PilBeginMode3D (float pos_x, float pos_y, float pos_z, float tgt_x, float tgt_y, float tgt_z)
{
  Camera camera = {0};

  Vector3 position = {0};
  position.x = pos_x;
  position.y = pos_y;
  position.z = pos_z;

  Vector3 target = {0};
  target.x = tgt_x;
  target.y = tgt_y;
  target.z = tgt_z;

  camera.position = position;
  camera.target = target;
  camera.up = (Vector3){0.0f, 1.0f, 0.0f};
  camera.fovy = 60.0f;
  camera.projection = 0;

  UpdateCameraPro(&camera, (Vector3){0.0f,0.0f,0.0f},(Vector3){0.0f,0.0f,0.0f},0.0f); 

  BeginMode3D(camera);
}

void
PilDrawCube (float pos_x, float pos_y, float pos_z, float w, float l, float h, Color color)
{
  Vector3 position = {0};
  position.x = pos_x;
  position.y = pos_y;
  position.z = pos_z;

  DrawCube(position, w, l, h, color);
}

/**/

(de raylib @ (pass native "libraylib.so"))

(de MovePos (pos)
  (when (=1 (raylib "IsKeyDown" 'B KEY_RIGHT)) (inc pos 0.2))
  (when (=1 (raylib "IsKeyDown" 'B KEY_LEFT)) (dec pos 0.2))
  (when (=1 (raylib "IsKeyDown" 'B KEY_UP)) (dec (cddr pos) 0.2))
  (when (=1 (raylib "IsKeyDown" 'B KEY_DOWN)) (inc (cddr pos) 0.2)) )

(setq screen_width	800
      screen_height	450
      KEY_RIGHT         262
      KEY_LEFT          263
      KEY_DOWN          264
      KEY_UP            265
      MOUSE_BUTTON_LEFT 0 
      RAYWHITE      	(hex "FFF5F5F5")
      DARKGRAY      	(hex "FF505050")
      MAROON		(hex "FF3721BE"))

(raylib "InitWindow" NIL screen_width screen_height "raylib mmo - picolisp")

(setq camera_pos (list 0.0 10.0 10.0) )
(setq target_pos (list 0.0 0.0 0.0) )

(raylib "SetTargetFPS" NIL 60)

(while (=0 (raylib "WindowShouldClose" 'B))

  (MovePos camera_pos)
  (MovePos target_pos)

  (raylib "BeginDrawing")
    (raylib "ClearBackground" NIL RAYWHITE )
    (BeginMode3D camera_pos target_pos)
       (raylib "DrawGrid" NIL 30 (cons 1.0 -1.0))
       (DrawCube target_pos 0.5 0.5 0.5 MAROON)
    (raylib "EndMode3D")
  (raylib "EndDrawing") )

(raylib "CloseWindow")
(bye)