Basic tilemap rendering

.idea/git_toolbox_prj.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GitToolBoxProjectSettings">
+    <option name="commitMessageIssueKeyValidationOverride">
+      <BoolValueOverride>
+        <option name="enabled" value="true" />
+      </BoolValueOverride>
+    </option>
+    <option name="commitMessageValidationEnabledOverride">
+      <BoolValueOverride>
+        <option name="enabled" value="true" />
+      </BoolValueOverride>
+    </option>
+  </component>
+</project>

src/helpers/mod.rs

@@ -0,0 +1 @@
+pub mod texture;

src/helpers/texture.rs

@@ -0,0 +1,20 @@
+use bevy::{prelude::*, render::render_resource::TextureUsages};
+
+pub fn set_texture_filters_to_nearest(
+    mut texture_events: EventReader<AssetEvent<Image>>,
+    mut textures: ResMut<Assets<Image>>,
+) {
+    // quick and dirty, run this for all textures anytime a texture is created.
+    for event in texture_events.iter() {
+        match event {
+            AssetEvent::Created { handle } => {
+                if let Some(mut texture) = textures.get_mut(handle) {
+                    texture.texture_descriptor.usage = TextureUsages::TEXTURE_BINDING
+                        | TextureUsages::COPY_SRC
+                        | TextureUsages::COPY_DST;
+                }
+            }
+            _ => (),
+        }
+    }
+}

src/main.rs

@@ -1,3 +1,50 @@
-fn main() {
-    println!("Hello, world!");
+use bevy::prelude::*;
+use bevy_ecs_tilemap::prelude::*;
+
+mod helpers;
+
+fn startup(mut commands: Commands, asset_server: Res<AssetServer>, mut map_query: MapQuery) {
+    commands.spawn_bundle(OrthographicCameraBundle::new_2d());
+
+    let texture_handle = asset_server.load("tileset.png");
+
+    let map_entity = commands.spawn().id();
+    let mut map = Map::new(0u16, map_entity);
+
+    let (mut layer_builder, layer_entity) = LayerBuilder::<TileBundle>::new(
+        &mut commands,
+        LayerSettings::new(
+            MapSize(3, 3),
+            ChunkSize(8, 8),
+            TileSize(8.0, 8.0),
+            TextureSize(24.0, 24.0)
+        ),
+        0u16,
+        0u16
+    );
+    layer_builder.set_all(TileBundle::default());
+
+    map_query.build_layer(&mut commands, layer_builder, texture_handle);
+    map.add_layer(&mut commands, 0u16, layer_entity);
+
+    commands
+        .entity(map_entity)
+        .insert(map)
+        .insert(Transform::from_xyz(-128.0, -128.0, 0.0))
+        .insert(GlobalTransform::default());
+}
+
+fn main() {
+    App::new()
+        .insert_resource(WindowDescriptor {
+            width: 1270.0,
+            height: 720.0,
+            title: String::from("Monstrous"),
+            ..Default::default()
+        })
+        .add_plugins(DefaultPlugins)
+        .add_plugin(TilemapPlugin)
+        .add_startup_system(startup)
+        .add_system(helpers::texture::set_texture_filters_to_nearest)
+        .run();
 }