Better death animations

game.coffee

@@ -4,6 +4,9 @@ Number.prototype.clamp = (min, max) ->
 randInRange =  (l, h) ->
 	l + Math.random() * (h - l)
 
+randNorm = () ->
+	((Math.random() for i in [1..12]).reduce (t,s) -> t + s) / 12
+
 hsv2rgb = (h, s, v) ->
 	c = v * s
 	h_p = h / 60.0
@@ -67,6 +70,8 @@ sounds =
 	intro: 'DST-ClubNight.mp3'
 	level1: 'DST-SpaceBuddha.mp3'
 	hum: 'hum.wav'
+	explosion0: 'explosion0.wav'
+	explosion1: 'explosion1.wav'
 
 atom.preloadSounds sounds, (x) -> game.loaded = true
 
@@ -142,7 +147,7 @@ class Scene
 
 		beam_hit = (@ship?.collideEnemy e for e in @enemies).some (x) -> x
 		if beam_hit
-			game.soundOn 'hum'
+			game.soundOn 'hum', .5
 		else
 			game.soundOff 'hum'
 
@@ -181,15 +186,16 @@ class Scene
 		@bullets.push new Bullet x, y, bullet.move, bullet.image
 
 	spawnEnemy: (x, y, e) ->
-		@enemies.push new Enemy x, y, e.move, e.fire, e.bullet, e.animate, e.health
+		@enemies.push new Enemy x, y, e.move, e.fire, e.bullet, e.animate, e.health, e.die
 
-	spawnExplosion: (x, y) ->
-		color = new Rainbow
-		for i in [1..40]
+	spawnExplosion: (x, y, n = 60, speed = [50, 200]) ->
+		while n > 0
+			n -= 1
 			theta = randInRange 0, 2 * Math.PI
-			speed = randInRange 20, 100
+			s= randInRange speed[0], speed[1]
 			r = randInRange 1, 3
-			@explosions.push new Explosion x, y, (moveStraightGravity speed * Math.cos(theta), speed * Math.sin(theta)), r, color.next()
+			@explosions.push new Explosion x, y, (moveStraight s* Math.cos(theta), s* Math.sin(theta)), r, [254,124,5]
+
 		undefined
 
 	showShip: (x = atom.width * .5, y = atom.height * .7, speed = 150) ->
@@ -329,13 +335,23 @@ fireEvery = (fireEvery=1) ->
 			true
 		else false
 
+die = 
+	normal: (e) ->
+		atom.playSound 'explosion0'
+		game.scene.spawnExplosion e.x, e.y
+	massive: (e) ->
+		atom.playSound 'explosion1'
+		for i in [0 .. 15]
+			game.scene.spawnExplosion  atom.width * randNorm() + e.x - atom.width/2, atom.height * randNorm() + e.y - atom.height/2
+
 enemy =
 	basic: (dx, dy, fireRate = .5) ->
 		move: moveStraight dx, dy
 		fire: fireEvery fireRate
 		bullet: [() -> bulletStraight()]
 		animate: new AnimationRotate atom.images.eye, 2
 		health: 500
+		die: die.normal
 	circle: (n=6, speed=100)->
 		move: moveStraight()
 		fire: fireEvery 1
@@ -348,6 +364,7 @@ enemy =
 			)(i, 1)
 		animate: new AnimationRotate atom.images.wheel
 		health: 1000
+		die: die.normal
 	fan: (dx, dy, n=6, speed=100)->
 		odd = 1
 		ret = 
@@ -362,12 +379,14 @@ enemy =
 				)
 			animate: new Animation enemyImage
 			health: 1000
+			die: die.normal
 	direct: (dx, dy, g) ->
 		move: moveStraightGravity dx, dy, g
 		fire: fireEvery 1
 		bullet: [(dt, s, e) -> bulletDirect s, e]
 		animate: new Animation enemyImage
 		health: 1250
+		die: die.normal
 
 	buddha1: (theta0 = 0, theta1 = Math.PI, dtheta = Math.PI/9.5, speed = 100) ->
 		move: moveRandom() 
@@ -391,7 +410,8 @@ enemy =
 			]
 
 		animate: new Animation atom.images.buddha1
-		health: 50000
+		health: 50000 
+		die: die.massive
 
 
 class Enemy
@@ -430,7 +450,7 @@ class Enemy
 		@health -= dh * @health_coeff
 		if @health <= 0
 			@alive = false
-			game.scene.spawnExplosion @x, @y
+			@die this
 
 
 class Ship
@@ -698,10 +718,11 @@ class Game extends atom.Game
 		else if @music_source?
 			@musicPlay @music_source
 
-	soundOn: (sound) ->
+	soundOn: (sound, gain = 1) ->
 		if not @playing[sound]? or @playing[sound].playbackState == 3
 			@playing[sound] = atom.playSound sound
 			@playing[sound].loop = true
+			@playing[sound].gain.value = gain
 
 	soundOff: (sound) ->
 		if @playing[sound]?
@@ -759,6 +780,10 @@ level1 = [
 	{waitUntil: (s) -> s.enemies.length <= 0},
 	{wait: 5},
 	{do: (s) -> s.spawnEnemy atom.width/2, 150, enemy.buddha1()},
+	{waitUntil: (s) -> s.enemies.length <= 0},
+	{wait:2},
+	{do: (s) -> s.fadeOut 2},
+	{wait: 3},
 	#{changeScene: true}
 ]