Bruh

src/main.rs

@@ -0,0 +1,166 @@
+use bevy::{prelude::*, utils::HashSet};
+use bevy_ecs_ldtk::prelude::*;
+
+fn main() {
+    App::new()
+        .add_plugins(DefaultPlugins.set(ImagePlugin::default_nearest()))
+        .add_plugins(LdtkPlugin)
+        .insert_resource(LevelSelection::index(0))
+        .register_ldtk_entity::<PlayerBundle>("Player")
+        .init_resource::<LevelWalls>()
+        .register_ldtk_entity::<GoalBundle>("Goal")
+        .register_ldtk_int_cell::<WallBundle>(1)
+        .add_systems(
+            Update,
+            (
+                move_player_from_input,
+                translate_grid_coords_entities,
+                cache_wall_locations,
+				check_goal,
+            ),
+        )
+        .add_systems(Startup, setup)
+        .run();
+}
+
+fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
+    let mut camera = Camera2dBundle::default();
+    camera.projection.scale = 0.5;
+    camera.transform.translation.x += 1280.0 / 4.0;
+    camera.transform.translation.y += 720.0 / 4.0;
+    commands.spawn(camera);
+
+    commands.spawn(LdtkWorldBundle {
+        ldtk_handle: asset_server.load("shocked-miguel.ldtk"),
+        ..Default::default()
+    });
+}
+#[derive(Default, Component)]
+struct Player;
+
+#[derive(Default, Bundle, LdtkEntity)]
+struct PlayerBundle {
+    player: Player,
+    #[sprite_sheet_bundle]
+    sprite_bundle: LdtkSpriteSheetBundle,
+    #[grid_coords]
+    grid_coords: GridCoords,
+}
+
+#[derive(Default, Component)]
+struct Goal;
+
+#[derive(Default, Bundle, LdtkEntity)]
+struct GoalBundle {
+    goal: Goal,
+    #[sprite_sheet_bundle]
+    sprite_sheet_bundle: LdtkSpriteSheetBundle,
+    #[grid_coords]
+    grid_coords: GridCoords,
+}
+fn move_player_from_input(
+    mut players: Query<&mut GridCoords, With<Player>>,
+    input: Res<ButtonInput<KeyCode>>,
+    level_walls: Res<LevelWalls>,
+) {
+    let movement_direction = if input.just_pressed(KeyCode::KeyW) {
+        GridCoords::new(0, 1)
+    } else if input.just_pressed(KeyCode::KeyA) {
+        GridCoords::new(-1, 0)
+    } else if input.just_pressed(KeyCode::KeyS) {
+        GridCoords::new(0, -1)
+    } else if input.just_pressed(KeyCode::KeyD) {
+        GridCoords::new(1, 0)
+    } else {
+        return;
+    };
+
+    for mut player_grid_coords in players.iter_mut() {
+        let destination = *player_grid_coords + movement_direction;
+        if !level_walls.in_wall(&destination) {
+            *player_grid_coords = destination;
+        }
+    }
+}
+const GRID_SIZE: i32 = 16;
+
+fn translate_grid_coords_entities(
+    mut grid_coords_entities: Query<(&mut Transform, &GridCoords), Changed<GridCoords>>,
+) {
+    for (mut transform, grid_coords) in grid_coords_entities.iter_mut() {
+        transform.translation =
+            bevy_ecs_ldtk::utils::grid_coords_to_translation(*grid_coords, IVec2::splat(GRID_SIZE))
+                .extend(transform.translation.z);
+    }
+}
+
+#[derive(Default, Component)]
+struct Wall;
+
+#[derive(Default, Bundle, LdtkIntCell)]
+struct WallBundle {
+    wall: Wall,
+}
+
+#[derive(Default, Resource)]
+struct LevelWalls {
+    wall_locations: HashSet<GridCoords>,
+    level_width: i32,
+    level_height: i32,
+}
+impl LevelWalls {
+    fn in_wall(&self, grid_coords: &GridCoords) -> bool {
+        grid_coords.x < 0
+            || grid_coords.y < 0
+            || grid_coords.x >= self.level_width
+            || grid_coords.y >= self.level_height
+            || self.wall_locations.contains(grid_coords)
+    }
+}
+fn cache_wall_locations(
+    mut level_walls: ResMut<LevelWalls>,
+    mut level_events: EventReader<LevelEvent>,
+    walls: Query<&GridCoords, With<Wall>>,
+    ldtk_project_entities: Query<&Handle<LdtkProject>>,
+    ldtk_project_assets: Res<Assets<LdtkProject>>,
+) {
+    for level_event in level_events.read() {
+        if let LevelEvent::Spawned(level_iid) = level_event {
+            let ldtk_project = ldtk_project_assets
+                .get(ldtk_project_entities.single())
+                .expect("LdtkProject should be loaded when level is spawned");
+            let level = ldtk_project
+                .get_raw_level_by_iid(level_iid.get())
+                .expect("spawned level should exist in project");
+
+            let wall_locations = walls.iter().copied().collect();
+
+            let new_level_walls = LevelWalls {
+                wall_locations,
+                level_width: level.px_wid / GRID_SIZE,
+                level_height: level.px_hei / GRID_SIZE,
+            };
+
+            *level_walls = new_level_walls;
+        }
+    }
+}
+
+fn check_goal(
+    level_selection: ResMut<LevelSelection>,
+    players: Query<&GridCoords, (With<Player>, Changed<GridCoords>)>,
+    goals: Query<&GridCoords, With<Goal>>,
+) {
+    if players
+        .iter()
+        .zip(goals.iter())
+        .any(|(player_grid_coords, goal_grid_coords)| player_grid_coords == goal_grid_coords)
+    {
+        let indices = match level_selection.into_inner() {
+            LevelSelection::Indices(indices) => indices,
+            _ => panic!("level selection should always be Indices in this game"),
+        };
+
+        indices.level += 1;
+    }
+}

src/player.rs

@@ -0,0 +1,69 @@
+use bevy::prelude::*;
+use bevy_ecs_ldtk::prelude::*;
+use bevy_rapier2d::dynamics::Velocity;
+
+use crate::{climbing::Climber, inventory::Inventory};
+use crate::{colliders::ColliderBundle, ground_detection::GroundDetection};
+
+#[derive(Copy, Clone, Eq, PartialEq, Debug, Default, Component)]
+pub struct Player;
+
+#[derive(Clone, Default, Bundle, LdtkEntity)]
+pub struct PlayerBundle {
+    #[sprite_bundle("player.png")]
+    pub sprite_bundle: SpriteBundle,
+    #[from_entity_instance]
+    pub collider_bundle: ColliderBundle,
+    pub player: Player,
+    #[worldly]
+    pub worldly: Worldly,
+    pub climber: Climber,
+    pub ground_detection: GroundDetection,
+
+    // Build Items Component manually by using `impl From<&EntityInstance>`
+    #[from_entity_instance]
+    items: Inventory,
+
+    // The whole EntityInstance can be stored directly as an EntityInstance component
+    #[from_entity_instance]
+    entity_instance: EntityInstance,
+}
+
+pub fn player_movement(
+    input: Res<ButtonInput<KeyCode>>,
+    mut query: Query<(&mut Velocity, &mut Climber, &GroundDetection), With<Player>>,
+) {
+    for (mut velocity, mut climber, ground_detection) in &mut query {
+        let right = if input.pressed(KeyCode::KeyD) { 1. } else { 0. };
+        let left = if input.pressed(KeyCode::KeyA) { 1. } else { 0. };
+
+        velocity.linvel.x = (right - left) * 200.;
+
+        if climber.intersecting_climbables.is_empty() {
+            climber.climbing = false;
+        } else if input.just_pressed(KeyCode::KeyW) || input.just_pressed(KeyCode::KeyS) {
+            climber.climbing = true;
+        }
+
+        if climber.climbing {
+            let up = if input.pressed(KeyCode::KeyW) { 1. } else { 0. };
+            let down = if input.pressed(KeyCode::KeyS) { 1. } else { 0. };
+
+            velocity.linvel.y = (up - down) * 200.;
+        }
+
+        if input.just_pressed(KeyCode::Space) && (ground_detection.on_ground || climber.climbing) {
+            velocity.linvel.y = 500.;
+            climber.climbing = false;
+        }
+    }
+}
+
+pub struct PlayerPlugin;
+
+impl Plugin for PlayerPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_systems(Update, player_movement)
+            .register_ldtk_entity::<PlayerBundle>("Player");
+    }
+}