Split init into its own function

game.odin

@@ -82,6 +82,39 @@ swap_n_pop :: proc(bullets: ^[dynamic]$T, idx: int) {
     }
 }
 
+init_game :: proc() -> ^GameState {
+    start_pos := Vec2{BW / 2 - SHIP_W / 2, BH / 2 - SHIP_H / 2}
+    state := GameState {
+        dt = rl.GetFrameTime(),
+        player_state = Player {
+            pos = start_pos,
+            angle = -math.PI / 2,
+        },
+        bullets           = make([dynamic]Bullet, 0, 64),
+        asteroids         = make([dynamic]Asteroid, 0, 64),
+        asteroid_pop_idxs = make([dynamic]int, 0, 64),
+        bullet_pop_idxs   = make([dynamic]int, 0, 64),
+    }
+
+    get_rand_angle :: proc(min: i32, max: i32) -> f32 {
+        return f32(rl.GetRandomValue(min, max)) * rl.DEG2RAD
+    }
+
+    for i := 0; i < 5; i += 1 {
+        rand_angle := get_rand_angle(-50, 50)
+        rand_pos := Vec2{ f32(rl.GetRandomValue(0, i32(BW))), -50 }
+        rand_size := f32(rl.GetRandomValue(25, 60))
+        rand_vy := f32(rl.GetRandomValue(1, 2)) * 0.5
+        asteroid := Asteroid {
+            rect = {rand_pos.x,rand_pos.y,rand_size,rand_size},
+            vel  = Vec2{rand_angle, rand_vy} * 50,
+            rot  = 0,
+        }
+        append(&state.asteroids, asteroid)
+    }
+    return new_clone(state)
+}
+
 player_input :: proc(s: ^GameState) {
     switch &player in s.player_state {
     case Player:
@@ -189,47 +222,19 @@ main :: proc() {
     rl.InitWindow(SCREEN_WIDTH, SCREEN_HEIGHT, "Asteroids")
     rl.SetTargetFPS(60)
 
-    start_pos := Vec2{BW / 2 - SHIP_W / 2, BH / 2 - SHIP_H / 2}
+    state := init_game()
-    s := GameState{
-        dt = rl.GetFrameTime(),
-        player_state = Player {
-            pos = start_pos,
-            angle = -math.PI / 2,
-        },
-        bullets           = make([dynamic]Bullet, 0, 64),
-        asteroids         = make([dynamic]Asteroid, 0, 64),
-        asteroid_pop_idxs = make([dynamic]int, 0, 64),
-        bullet_pop_idxs   = make([dynamic]int, 0, 64),
-    }
-
-    get_rand_angle :: proc(min: i32, max: i32) -> f32 {
-        return f32(rl.GetRandomValue(min, max)) * rl.DEG2RAD
-    }
-
-    for i := 0; i < 5; i += 1 {
-        rand_angle := get_rand_angle(-50, 50)
-        rand_pos := Vec2{ f32(rl.GetRandomValue(0, i32(BW))), -50 }
-        rand_size := f32(rl.GetRandomValue(25, 60))
-        rand_vy := f32(rl.GetRandomValue(1, 2)) * 0.5
-        asteroid := Asteroid {
-            rect = {rand_pos.x,rand_pos.y,rand_size,rand_size},
-            vel  = Vec2{rand_angle, rand_vy} * 50,
-            rot  = 0,
-        }
-        append(&s.asteroids, asteroid)
-    }
 
     for !rl.WindowShouldClose() {
-        s.dt = rl.GetFrameTime()
+        state.dt = rl.GetFrameTime()
 
-        player_input(&s)
+        player_input(state)
 
-        update(&s)
+        update(state)
 
         rl.BeginDrawing()
         rl.ClearBackground(rl.BLACK)
 
-        draw2d(&s)
+        draw2d(state)
 
         rl.EndDrawing()
     }