Create walkable_carpet.nim

examples/walkable_carpet.nim

@@ -0,0 +1,44 @@
+import fenstim
+
+const 
+  WIDTH = 800
+  HEIGHT = 600
+  FPS = 60
+
+var 
+  app = init(Fenster, "Walkable Carpet Pattern", WIDTH, HEIGHT, FPS)
+  offsetX, offsetY = 0
+  lastMouseCords = (app.mouse.pos.x, app.mouse.pos.y)
+
+proc movingCarpetPattern(x, y: int, mouseX, mouseY: float32): uint32 =
+  let
+    smoothOffsetX = (mouseX / WIDTH.float32 * 20).int
+    smoothOffsetY = (mouseY / HEIGHT.float32 * 20).int
+
+    adjustedX = (x + smoothOffsetX + offsetX) div 20
+    adjustedY = (y + smoothOffsetY + offsetY) div 20
+
+    isEvenSquare = (adjustedX + adjustedY) mod 2 == 0
+    color = if isEvenSquare: 0xD2691E else: 0x8B4513
+
+  return color.uint32
+
+proc updateOffset() =
+  const MOVE_SPEED = 5
+  if app.keys[ord('W')] == 1: offsetY -= MOVE_SPEED
+  if app.keys[ord('S')] == 1: offsetY += MOVE_SPEED
+  if app.keys[ord('A')] == 1: offsetX -= MOVE_SPEED
+  if app.keys[ord('D')] == 1: offsetX += MOVE_SPEED
+
+while app.loop and app.keys[27] == 0:
+  let mouseMoved = lastMouseCords != (app.mouse.pos.x, app.mouse.pos.y)
+  let movementKeysPressed = app.keys[ord('W')] == 1 or app.keys[ord('A')] == 1 or app.keys[ord('S')] == 1 or app.keys[ord('D')] == 1
+
+  if mouseMoved or movementKeysPressed:
+    lastMouseCords = (app.mouse.pos.x, app.mouse.pos.y)
+
+    updateOffset()
+
+    for x in 0 ..< WIDTH:
+      for y in 0 ..< HEIGHT:
+        app.pixel(x, y) = movingCarpetPattern(x, y, app.mouse.pos.x.float32, app.mouse.pos.y.float32)