More Sounds

In this part, more sound effects are added.

Freesound is a collaborative database of Creative Commons Licensed sounds and a good place to look for sound effects.

Apart from music, sounds have been played only on ball-brick collisions. Besides, there has been only a single sound for each brick type. To add some diversity, I want to add sound effect to other collision types, and I want several effects for each event.

First, more sounds on ball-brick collisions:

local simple_break_sound = {
   love.audio.newSource(
      "sounds/simple_break/recordered_glass_norm.ogg",
      "static"),   
   love.audio.newSource(
      "sounds/simple_break/edgardedition_glass_hit_norm.ogg",
      "static") }

local armored_hit_sound = {
   love.audio.newSource(
      "sounds/armored_hit/qubodupImpactMetal_short_norm.ogg",
      "static"),
   love.audio.newSource(
      "sounds/armored_hit/cast_iron_clangs_14_short_norm.ogg",
      "static"),
   love.audio.newSource(
      "sounds/armored_hit/cast_iron_clangs_22_short_norm.ogg",
      "static") }

local armored_break_sound = {
   love.audio.newSource(
      "sounds/armored_break/armored_glass_break_short_norm.ogg",
      "static"),
   love.audio.newSource(
      "sounds/armored_break/ngruber__breaking-glass_6_short_norm.ogg",
      "static") }

local ball_heavyarmored_sound = {
   love.audio.newSource(
      "sounds/heavyarmored_hit/cast_iron_clangs_11_short_norm.ogg",
      "static"),
   love.audio.newSource(
      "sounds/heavyarmored_hit/cast_iron_clangs_18_short_norm.ogg",
      "static") }

Sounds when bonus is picked.

local bonus_collected_sound = {
   love.audio.newSource("sounds/bonus/bonus1.wav", "static"),
   love.audio.newSource("sounds/bonus/bonus2.wav", "static"),
   love.audio.newSource("sounds/bonus/bonus3.wav", "static")
}

Ball-wall collision sound effect.

local ball_wall_sound = love.audio.newSource(
   "sounds/ball_wall/pumpkin_break_01_short_norm.ogg",
   "static")

After loading the sounds, it is necessary to select and play one of them. To select one of the sounds, random number generator is created. After that, it is queried on each event.

Bricks.

local snd_rng = love.math.newRandomGenerator( os.time() )

function bricks.brick_hit_by_ball( i, brick, shift_ball, bonuses, score_display )
   if bricks.is_simple( brick ) then
      .....
      table.remove( bricks.current_level_bricks, i )
      local snd = simple_break_sound[ snd_rng:random( #simple_break_sound ) ]
      snd:play()
   elseif bricks.is_armored( brick ) then
      bricks.armored_to_scrathed( brick )
      local snd = armored_hit_sound[ snd_rng:random( #armored_hit_sound ) ]
      snd:play()
   elseif bricks.is_scratched( brick ) then
      bricks.scrathed_to_cracked( brick )
      local snd = armored_hit_sound[ snd_rng:random( #armored_hit_sound ) ]
      snd:play()
   elseif bricks.is_cracked( brick ) then
      .....
      table.remove( bricks.current_level_bricks, i )
      local snd = armored_break_sound[ snd_rng:random( #armored_break_sound ) ]
      snd:play()
   elseif bricks.is_heavyarmored( brick ) then
      local snd = 
         ball_heavyarmored_sound[ snd_rng:random( #ball_heavyarmored_sound ) ]
      snd:play()
   end
end

Same for the bonuses:

local snd_rng = love.math.newRandomGenerator( os.time() )

function bonuses.bonus_collected( i, bonus,
                                  balls, platform,
                                  walls, lives_display )
   .....
   table.remove( bonuses.current_level_bonuses, i )
   local snd = bonus_collected_sound[ snd_rng:random( #bonus_collected_sound ) ]
   snd:play()
end

Since there is only a single sound for the ball-wall collision, there is no need for random number generator.

function balls.wall_rebound( single_ball, shift_ball )
   .....
   balls.increase_speed_after_collision( single_ball )
   ball_wall_sound:play()
end