new console command 'error' (stderr equivalent of console window)

Former-commit-id: ab54663fd64f9ae9c758f53b3f5800a5894f0db3
Former-commit-id: 7aba1585ffa45195622bb25e1c62cace474420c9

src/net/torvald/terrarum/console/Error.kt

@@ -0,0 +1,23 @@
+package net.torvald.terrarum.console
+
+import net.torvald.imagefont.GameFontBase
+import net.torvald.terrarum.Terrarum
+import net.torvald.terrarum.ui.ConsoleWindow
+
+/**
+ * Created by minjaesong on 16-04-25.
+ */
+class Error : ConsoleCommand {
+    override fun execute(args: Array<String>) {
+        val argsWoHeader = Array<String>(args.size - 1, {it -> args[it + 1]})
+        argsWoHeader.forEach { execute(it) }
+    }
+
+    fun execute(single_line: String) {
+        (Terrarum.game.consoleHandler.UI as ConsoleWindow).sendMessage("${GameFontBase.colToCode["r"]}$single_line")
+    }
+
+    override fun printUsage() {
+
+    }
+}