draw grid system

src/states/linear/constants.rs

@@ -16,3 +16,4 @@ pub const ROUND_BALL_Z: f32 = 10.0;
 pub const PINK: Color = Color::srgb_u8(250, 0, 155);
 pub const BLUE: Color = Color::srgb_u8(0, 0, 255);
 pub const GREEN: Color = Color::srgb_u8(0, 255, 0);
+pub const DARK_GREEN: Color = Color::srgb_u8(0, 88, 88);

src/states/linear/plugin.rs

@@ -25,6 +25,7 @@ impl Plugin for LinearPlayPlugin {
                 Update,
                 (
                     draw_track_gizmos,
+                    draw_grid,
                     spawn_round_ball,
                     move_round_balls,
                 )

src/states/linear/systems.rs

@@ -1,4 +1,4 @@
-use crate::states;
+use crate::{HEIGHT, WIDTH, states, FACTOR};
 use bevy::prelude::*;
 use states::linear::*;
 use std::f32::consts::FRAC_PI_2;
@@ -52,3 +52,24 @@ pub fn draw_track_gizmos(track: Res<Track>, mut gizmos: Gizmos) {
     // рисуем финиш
     gizmos.circle_2d(current_pos, 5.0, Color::WHITE);
 }
+
+pub fn draw_grid(mut gizmos: Gizmos) {
+    let half_x = WIDTH as f32 / 2.0 * FACTOR as f32;
+    let half_y = HEIGHT as f32 / 2.0 * FACTOR as f32;
+
+    for i in 0..WIDTH {
+        gizmos.line_2d(
+            Vec2::new((i as f32 - 8.0) * FACTOR as f32, half_y),
+            Vec2::new((i as f32 - 8.0) * FACTOR as f32, -half_y),
+            DARK_GREEN,
+        );
+    }
+    
+    for i in 0..HEIGHT {
+        gizmos.line_2d(
+            Vec2::new(-half_x, (i as f32 - 4.0) * FACTOR as f32),
+            Vec2::new(half_x, (i as f32 - 4.0) * FACTOR as f32),
+            DARK_GREEN,
+        )
+    }
+}