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use bevy::prelude::*;
use bevy_rapier2d::prelude::*;
use game_library::{enums::StatEnum, StatBundle};
use leafwing_input_manager::action_state::ActionState;

use crate::{events::PlayerAction, player::Player};

use super::{
    animation::{PlayerAnimation, PlayerFacing},
    avatar::PlayerAvatar,
};

/// Handle player input for movement
pub fn player_movement_controls(
    mut query: Query<&mut KinematicCharacterController, With<Player>>,
    action_query: Query<&ActionState<PlayerAction>, With<Player>>,
    stat_query: Query<&StatBundle, With<Player>>,
    mut sprite_state_next: ResMut<NextState<PlayerAnimation>>,
    mut player_facing_next: ResMut<NextState<PlayerFacing>>,
) {
    let Ok(action_state) = action_query.get_single() else {
        tracing::error!("player_movement_controls: failed to get action state");
        return;
    };

    let Ok(stat_bundle) = stat_query.get_single() else {
        tracing::error!("player_movement_controls: failed to get stat_bundle");
        return;
    };

    let Some(speed) = stat_bundle.get_stat(&StatEnum::MovementSpeed) else {
        tracing::error!("player_movement_controls: failed to get speed stat");
        return;
    };

    // we expect just one `KinematicCharacterController` for the player
    let Ok(mut controller) = query.get_single_mut() else {
        tracing::error!("player_movement_controls: failed to get player controller");
        return;
    };

    if action_state.pressed(PlayerAction::Move) {
        sprite_state_next.set(PlayerAnimation::Walking);
        if let Some(axis_pair) = action_state.clamped_axis_pair(PlayerAction::Move) {
            controller.translation = Some(axis_pair.xy().normalize_or_zero() * (speed.value()));

            if axis_pair.x() < 0.0 {
                player_facing_next.set(PlayerFacing::Left);
            } else {
                player_facing_next.set(PlayerFacing::Right);
            }
        }
    } else {
        sprite_state_next.set(PlayerAnimation::Idle);
    }
}

/// Plugin that adjust the player's z-index based on their y position
pub(super) fn update_player_z_index(mut query: Query<&mut Transform, With<PlayerAvatar>>) {
    for mut transform in &mut query {
        transform.translation.z = -transform.translation.y;
    }
}