Refactor PlatformSpecific, update MonTanaMiniComputer and MTMCDisplay logic, add splash screen rendering with SplashData, and optimize observer calls and color initialization.

src/commonMain/kotlin/mtmc/emulator/MTMCDisplay.kt

@@ -18,13 +18,8 @@ class MTMCDisplay(private val computer: MonTanaMiniComputer) {
     LIGHT(87, 124, 68),
     LIGHTEST(127, 134, 15);
 
-    val intVal: Int
-    val javaColor: Color
-
-    init {
-      this.intVal = 0xFF shl 24 or (r shl 16) or (g shl 8) or b
-      javaColor = Color(r, g, b)
-    }
+    val intVal: Int = 0xFF shl 24 or (r shl 16) or (g shl 8) or b
+    val javaColor: Color = Color(r, g, b)
 
     fun distance(r: Int, g: Int, b: Int): Int {
       val dr = this.r - r
@@ -56,15 +51,20 @@ class MTMCDisplay(private val computer: MonTanaMiniComputer) {
   }
 
   private fun loadSplashScreen() {
-    /*    try {
-          val bytes: ByteArray = Base64.getDecoder().decode(SPLASH_SCREEN)
-          val bais = ByteArrayInputStream(bytes)
-          var img: BufferedImage? = null
-          img = ImageIO.read(bais)
-          loadScaledImage(img)
-        } catch (e: IOException) {
-          e.printStackTrace()
-        }*/
+    currentColor = DisplayColor.DARK
+    var currentColorCount = 0
+    var currentColor = 0
+    var colorIndex = 0
+    for (col in 0..<COLS) {
+      for (row in 0..<ROWS) {
+        if (currentColorCount == 0) {
+          currentColorCount = SPLASH_SCREEN_COLORS[colorIndex++]
+          currentColor = SPLASH_SCREEN_COLORS[colorIndex++]
+        }
+        setPixel(col, row, DisplayColor.entries[currentColor])
+        currentColorCount--
+      }
+    }
   }
 
   private fun loadImage(data: ByteArray): BufferedImage? {
@@ -107,7 +107,11 @@ class MTMCDisplay(private val computer: MonTanaMiniComputer) {
   }
 
   fun setPixel(col: Int, row: Int, color: DisplayColor) {
-    buffer.setRGB(col, row, color.intVal)
+    try {
+      buffer.setRGB(col, row, color.intVal)
+    } catch (e: Throwable) {
+      throw e
+    }
   }
 
   fun getPixel(col: Int, row: Int): Short {
@@ -173,7 +177,7 @@ class MTMCDisplay(private val computer: MonTanaMiniComputer) {
     //computer.notifyOfDisplayUpdate()
   }
 
-  fun toPng(): ByteArray? {
+  fun toPng(): ByteArray {
     return byteArray
   }