/*********************************/
/*   YABS             (  //      */
/*   main              ( )/      */
/*   by salade         )(/       */
/*  ________________  ( /)       */
/* ()__)____________)))))   :^}  */
/*********************************/

#include <stdlib.h>

#include "yabs_core.h"

namespace yabs {
namespace core {

int reset_camera(Scene3D& scene_3d) {
    SetCameraMode(scene_3d.camera, CAMERA_FIRST_PERSON);
    scene_3d.camera.position = (Vector3){50.0f, 1.0f, 50.0f};
    scene_3d.camera.target = (Vector3){50.0f, 1.0f, 50.0f};
    scene_3d.camera.up = (Vector3){0.0f, 1.0f, 0.0f};
    scene_3d.camera.fovy = 90.0f;
    scene_3d.camera.projection = CAMERA_PERSPECTIVE;

    scene_3d.rotation = (Vector3){0.0f, 0.0f, 0.0f};
    scene_3d.lastMousePos = GetMousePosition();
    return (0);
}

int draw(Model& model) {
    // draw checkerboard model
    for (int x = 0; x < 50; x++) {
        for (int z = 0; z < 50; z++) {
            Vector3 position;
            position.x = x;
            position.y = 0;
            position.z = z;
            DrawModel(model, position, 1.0f, WHITE);
        }
    }
    return (0);
}

int tick(Scene3D& scene_3d) {
    // mouse look
    Vector2 mouseMovement =
        Vector2Subtract(GetMousePosition(), scene_3d.lastMousePos);
    scene_3d.lastMousePos = GetMousePosition();
    scene_3d.rotation.x +=
        (mouseMovement.x * -YABS_CAMERA_MOUSE_MOVE_SENSITIVITY);
    scene_3d.rotation.y +=
        (mouseMovement.y * -YABS_CAMERA_MOUSE_MOVE_SENSITIVITY);

    // direction array
    bool direction[4] = {IsKeyDown(KEY_W), IsKeyDown(KEY_S), IsKeyDown(KEY_D),
                         IsKeyDown(KEY_A)};

    // compute movement
    scene_3d.movement = (Vector3){0, 0, 0};
    scene_3d.movement.x = (sinf(scene_3d.rotation.x) * direction[1] -
                           sinf(scene_3d.rotation.x) * direction[0] -
                           cosf(scene_3d.rotation.x) * direction[3] +
                           cosf(scene_3d.rotation.x) * direction[2]) /
                          YABS_PLAYER_MOVEMENT_SENSITIVITY;
    scene_3d.movement.z = (cosf(scene_3d.rotation.x) * direction[1] -
                           cosf(scene_3d.rotation.x) * direction[0] +
                           sinf(scene_3d.rotation.x) * direction[3] -
                           sinf(scene_3d.rotation.x) * direction[2]) /
                          YABS_PLAYER_MOVEMENT_SENSITIVITY;
    // elevation
    if (IsKeyDown(KEY_SPACE))
        scene_3d.movement.y += 0.12f;
    if (IsKeyDown(KEY_LEFT_CONTROL))
        scene_3d.movement.y -= 0.12f;

    // apply movement
    scene_3d.camera.position.x +=
        scene_3d.movement.x / YABS_PLAYER_MOVEMENT_SENSITIVITY;
    scene_3d.camera.position.y += scene_3d.movement.y;
    scene_3d.camera.position.z +=
        scene_3d.movement.z / YABS_PLAYER_MOVEMENT_SENSITIVITY;

    Matrix translation = MatrixTranslate(0, 0, (10));
    Matrix rotation2 =
        MatrixRotateXYZ((Vector3){YABS_DOUBLEPI - scene_3d.rotation.y,
                                  YABS_DOUBLEPI - scene_3d.rotation.x, 0});
    Matrix transform = MatrixMultiply(translation, rotation2);

    // apply camera rotation
    scene_3d.camera.target.x = scene_3d.camera.position.x - transform.m12;
    scene_3d.camera.target.y = scene_3d.camera.position.y - transform.m13;
    scene_3d.camera.target.z = scene_3d.camera.position.z - transform.m14;
    return (0);
}

}  // namespace core
}  // namespace yabs