chunk logic

src/background.rs

@@ -1,39 +1,34 @@
 use bevy::prelude::*;
 
+use crate::world::Chunk;
+
 // Test checkboard background
 
-const COLS: usize = 35;
-const ROWS: usize = 500;
-const CELL_SIZE: f32 = 60.0;
 const COLOR_A: Color = Color::srgb(0.0, 0.0, 0.0);
 const COLOR_B: Color = Color::srgb(0.6, 0.2, 0.8);
+const ROWS_PER_CHUNK: i64 = 2;
+const CELL_SIZE: f32 = crate::world::CHUNK_HEIGHT / ROWS_PER_CHUNK as f32;
+const BOARD_WIDTH: f32 = 1920.0;
+const COLS: i64 = (BOARD_WIDTH / CELL_SIZE).ceil() as i64;
 
-fn spawn_board(mut commands: Commands) {
-    for row in 0..ROWS {
+pub fn spawn_background_chunk(commands: &mut Commands, id: i64) {
+    for row in (id * ROWS_PER_CHUNK)..(id * ROWS_PER_CHUNK + ROWS_PER_CHUNK) {
         for col in 0..COLS {
-            // Altern colors
-            let color = if (row + col) % 2 == 0 {
+            let color = if (row + col as i64) % 2 == 0 {
                 COLOR_A
             } else {
                 COLOR_B
             };
 
             commands.spawn((
+                Chunk { id },
                 Sprite::from_color(color, Vec2::new(CELL_SIZE, CELL_SIZE)),
                 Transform::from_xyz(
                     (col as f32 + 0.5 - COLS as f32 / 2.0) * CELL_SIZE,
-                    (row as f32 + 0.5 - ROWS as f32 / 2.0) * CELL_SIZE,
+                    (row as f32 + 0.5) * CELL_SIZE,
                     0.0,
                 ),
             ));
         }
     }
 }
-
-pub struct BackgroundPlugin;
-
-impl Plugin for BackgroundPlugin {
-    fn build(&self, app: &mut App) {
-        app.add_systems(Startup, spawn_board);
-    }
-}