Test lua rgb rainbow

assets/scene/initial.lua

@@ -1,15 +1,12 @@
 module('spritebatch')
 module('camera')
 module('color')
--- module('ui')
 module('text')
 module('screen')
 module('time')
--- module('map')
 module('glm')
 
 screenSetBackground(colorBlack())
--- mapLoad('map/testmap/testmap.dmf')
 camera = cameraCreate(CAMERA_PROJECTION_TYPE_ORTHOGRAPHIC)
 
 text = "Hello World"
@@ -21,11 +18,6 @@ function sceneUpdate()
 end
 
 function sceneRender()
-  -- Map Test
-  -- cameraPushMatrix(mapCamera)
-  -- mapRender()
-  -- cameraPopMatrix()
-  
   -- UI Test
   cameraPushMatrix(camera)
   camera.bottom = screenGetHeight()
@@ -36,7 +28,16 @@ function sceneRender()
   x = math.sin(TIME.time * 2) * (x / 2) + (x / 2)
   y = (screenGetHeight() - height) / 2
   y = math.cos(TIME.time * 3) * (y) + (y)
-  textDraw(x, y, text, colorMagenta())
+
+  -- For each letter
+  for i = 1, #text do
+    letter = text:sub(i, i)
+    letterWidth, _ = textMeasure(letter)
+
+    -- Draw letter with rainbow color
+    textDraw(x, y, letter, colorRainbow((i - 1) * 0.1, 8))
+    x = x + letterWidth
+  end
 
   cameraPopMatrix()
 end