converted sounds to ogg (fixes #188)

objects/enemy/boss/collapse_blocks.tscn

@@ -1,7 +1,7 @@
 [gd_scene load_steps=4 format=2]
 
 [ext_resource path="res://objects/environment/collapse_block/collapse_block.tscn" type="PackedScene" id=1]
-[ext_resource path="res://audio/sounds/collapse_block_fall.wav" type="AudioStream" id=2]
+[ext_resource path="res://audio/sounds/collapse_block_fall.ogg" type="AudioStream" id=2]
 
 [sub_resource type="PhysicsMaterial" id=2]
 bounce = 0.07

objects/enemy/boss/scrump.gd

@@ -39,7 +39,7 @@ func _on_ShootTimer_timeout():
 
 func die():
 	hp -= 1
-	Audio.play_sound(Audio.a_boss_hurt,Audio.ac_boss)
+	Audio.play_sound(Audio.a_scrump_hurt,Audio.ac_boss)
 	match hp:
 		2: 
 			emit_signal("entered_phase", 2)

objects/enemy/cop.gd

@@ -60,7 +60,7 @@ func _physics_process(delta):
 					collider.get_parent().die()
 				
 				# play sound
-				Audio.play_sound(Audio.a_die_robot, Audio.ac_boss)
+				Audio.play_sound(Audio.a_explosion, Audio.ac_boss)
 				
 				# muzzle flash
 				muzzle_flash.emitting = true

objects/enemy/enemy_move_diagonal.gd

@@ -12,7 +12,7 @@ export(int, "/", "\\") var move_direction
 onready var startpos = position
 
 func _ready():
-	death_sound = Audio.a_die_robot
+	death_sound = Audio.a_explosion
 	up_boundary *= 8
 	down_boundary *= 8
 	#Move in direction selected

objects/enemy/explosion.gd

@@ -2,7 +2,7 @@ extends "res://objects/enemy/enemy.gd"
 
 func _ready():
 	$AnimatedSprite.play("explode")
-	Audio.play_sound(Audio.a_die_robot,Audio.ac_die)
+	Audio.play_sound(Audio.a_explosion,Audio.ac_die)
 
 func _on_animation_finished():
 	queue_free()

objects/enemy/roboturret.gd

@@ -13,7 +13,7 @@ const ArrowProjectile = preload("res://objects/enemy/roboturret_proj.tscn")
 
 func _ready():
 	timer.start(shoot_time)
-	death_sound = Audio.a_die_robot
+	death_sound = Audio.a_explosion
 	# adjust to difficulty
 	shoot_time /= Game.enemy_speed_factor
 	arrow_speed *= Game.enemy_speed_factor