Draw starscape

src/Models/Starscape.zig

@@ -0,0 +1,68 @@
+const std = @import("std");
+const raylib = @import("raylib");
+const Shared = @import("../Shared.zig").Shared;
+
+pub const Starscape = struct {
+    const STAR_COUNT = 500;
+    const MIN_STAR_SIZE: f32 = 0.1;
+    const MAX_STAR_SIZE: f32 = 2.0;
+
+    starTexture: raylib.Texture,
+
+    pub fn init(screenSize: raylib.Vector2) Starscape {
+        @setEvalBranchQuota(5000);
+
+        var stars: [STAR_COUNT]raylib.Vector3 = undefined;
+        inline for (0..STAR_COUNT) |i| {
+            stars[i] = raylib.Vector3.init(
+                Shared.Random.Get().float(f32) * screenSize.x,
+                Shared.Random.Get().float(f32) * screenSize.y,
+                (Shared.Random.Get().float(f32) * (MAX_STAR_SIZE - MIN_STAR_SIZE)) + MIN_STAR_SIZE,
+            );
+        }
+        var renderTexture = raylib.loadRenderTexture(@intFromFloat(screenSize.x), @intFromFloat(screenSize.y));
+        {
+            raylib.beginTextureMode(renderTexture);
+            raylib.clearBackground(Shared.Color.Transparent);
+            inline for (stars) |star| {
+                raylib.drawCircleGradient(
+                    @intFromFloat(star.x),
+                    @intFromFloat(star.y),
+                    star.z,
+                    Shared.Color.Blue.Base,
+                    Shared.Color.Yellow.Base,
+                );
+            }
+            defer raylib.endTextureMode();
+        }
+
+        return Starscape{
+            .starTexture = renderTexture.texture,
+        };
+    }
+
+    pub fn deinit(self: @This()) void {
+        self.starTexture.unload();
+    }
+
+    pub fn Draw(self: @This(), screenWidth: f32, screenHeight: f32) void {
+        raylib.drawTexturePro(
+            self.starTexture,
+            raylib.Rectangle.init(
+                0,
+                0,
+                @floatFromInt(self.starTexture.width),
+                @floatFromInt(self.starTexture.height),
+            ),
+            raylib.Rectangle.init(
+                0,
+                0,
+                screenWidth,
+                screenHeight,
+            ),
+            raylib.Vector2.init(0, 0),
+            0,
+            Shared.Color.Tone.Base,
+        );
+    }
+};