Port TextBubble to coffee

Author: adrianton3

.gitignore

@@ -22,6 +22,7 @@ src/js/generator/*.js
 src/js/sound/**/*.js
 src/js/prettyprinter/*.js
 src/js/Game.js
+src/js/TextBubble.js
 src/js/editor/*.js
 
 test/spec/*.js

src/js/TextBubble.coffee

@@ -0,0 +1,61 @@
+define [
+	'Text'
+	'Vec2'
+	'con2d'
+], (
+	Text
+	Vec2
+	con2d
+) ->
+	'use strict'
+
+	TextBubble = ->
+		@position = new Vec2(8, 8)
+		@visible = true
+		@text = ''
+		@length = -Infinity
+		@lines = []
+		return
+
+
+	TextBubble::hide = ->
+		@visible = false
+		@
+
+
+	TextBubble::show = ->
+		@visible = true
+		@
+
+
+	TextBubble::draw = ->
+		return if not @visible
+
+		# clear bubble
+		con2d.fillStyle = '#007B90'
+		con2d.fillRect @position.x, @position.y, @length * 16 + 8, @lines.length * 18 + 8
+
+		# draw the text, line by line
+		i = 0
+		while i < @lines.length
+			Text.drawAt @lines[i], @position.x + 4, @position.y + i * 18 + 4
+			i++
+
+		return
+
+
+	TextBubble::setText = (text) ->
+		# remove when the character set is complete
+		@text = text.toUpperCase()
+
+		@lines = @text.split '\n'
+			.map (line) -> line.trim()
+
+		@length = Math.max @lines.map(({ length }) -> length)...
+
+		boxWidth = @length * 16 + 8
+		@position.x = (con2d.canvas.width - boxWidth) // 2
+		@
+
+
+	TextBubble