Fixed #37: Added syntax rect.toPoints

roguelike-starterkit/src/main/scala/roguelikestarterkit/starterkit/package.scala

@@ -1,5 +1,23 @@
 package roguelikestarterkit
 
+import indigo.shared.collections.Batch
+import indigo.shared.datatypes.Point
+import indigo.shared.datatypes.Rectangle
+
+object syntax:
+
+  extension (r: Rectangle)
+    def toPoints: Batch[Point] =
+      Batch.fromIndexedSeq(
+        (0 until r.height).flatMap { y =>
+          (0 until r.width).map { x =>
+            Point(r.x + x, r.y + y)
+          }
+        }
+      )
+
+end syntax
+
 // Terminal
 
 type TerminalEmulator = terminal.TerminalEmulator

roguelike-starterkit/src/test/scala/roguelikestarterkit/starterkit/SyntaxTests.scala

@@ -0,0 +1,52 @@
+package roguelikestarterkit.starterkit
+
+import indigo.*
+import roguelikestarterkit.syntax.toPoints
+
+class SyntaxTests extends munit.FunSuite {
+
+  test("Can convert a rectangle to a grid of points") {
+    val actual = Rectangle(0,0,4,3).toPoints
+
+    val expected =
+      Batch(
+        Point(0, 0),
+        Point(1, 0),
+        Point(2, 0),
+        Point(3, 0),
+        Point(0, 1),
+        Point(1, 1),
+        Point(2, 1),
+        Point(3, 1),
+        Point(0, 2),
+        Point(1, 2),
+        Point(2, 2),
+        Point(3, 2),
+      )
+
+    assertEquals(actual, expected)
+  }
+
+  test("Can convert a offset rectangle to a grid of points") {
+    val actual = Rectangle(10,20,4,3).toPoints
+
+    val expected =
+      Batch(
+        Point(10 + 0, 20 + 0),
+        Point(10 + 1, 20 + 0),
+        Point(10 + 2, 20 + 0),
+        Point(10 + 3, 20 + 0),
+        Point(10 + 0, 20 + 1),
+        Point(10 + 1, 20 + 1),
+        Point(10 + 2, 20 + 1),
+        Point(10 + 3, 20 + 1),
+        Point(10 + 0, 20 + 2),
+        Point(10 + 1, 20 + 2),
+        Point(10 + 2, 20 + 2),
+        Point(10 + 3, 20 + 2),
+      )
+
+    assertEquals(actual, expected)
+  }
+
+}