Add float to int builtin

example/src/main.nub

@@ -6,11 +6,30 @@ module "main"
 extern "main" func main(args: []cstring): i64
 {
     raylib::InitWindow(1600, 900, "Hi from nub-lang")
+    raylib::SetTargetFPS(240)
+
+    let x: i32 = 0
+    let y: i32 = 0
+
+    let width: i32 = 100
+    let height: i32 = 100
+
+    let direction: raylib::Vector2 = { x = 1 y = 1 }
+
+    let bgColor: raylib::Color = { r = 0 g = 0 b = 0 a = 255 }
+    let color: raylib::Color = { r = 255 g = 255 b = 255 a = 255 }
 
     while !raylib::WindowShouldClose()
     {
         raylib::BeginDrawing()
+        {
+            raylib::ClearBackground(bgColor);
+            raylib::DrawRectangle(x, y, width, height, color)
+        }
         raylib::EndDrawing()
+
+        x = x + @floatToInt(i32, direction.x)
+        y = y + @floatToInt(i32, direction.y)
     }
 
     return 0