lib/audio.lua

@@ -1,6 +1,8 @@
 local ease = require "lib.utils.easing"
 local AnimationNode = require "lib.animation_node"
 
+--- @alias SourceFilter { type: "bandpass"|"highpass"|"lowpass", volume: number, highgain: number, lowgain: number }
+
 --- @class Audio
 --- @field musicVolume number
 --- @field soundVolume number
@@ -60,7 +62,11 @@ function audio:crossfade(from, to, ms)
 end
 
 --- @param source love.Source
-function audio:play(source)
+--- @param settings SourceFilter?
+function audio:play(source, settings)
+    if settings then
+        source:setFilter(settings)
+    end
     if source:getType() == "stream" then
         source:setLooping(self.looped)
         source:setVolume(self.musicVolume)

lib/spellbook.lua

@@ -148,8 +148,14 @@ function attack:cast(caster, target)
                         function(node)
                             local audioPath = Tree.assets.files.audio
                             targetSprite:animate("hurt", node)
-                            -- Tree.assets.files.audio.sounds.hurt:play()
-                            Tree.audio:play(audioPath.sounds.hurt)
+                            --- @type SourceFilter
+                            local settings = {
+                                type = "bandpass",
+                                volume = 1,
+                                highgain = 0.1,
+                                lowgain = 0.1
+                            }
+                            Tree.audio:play(audioPath.sounds.hurt, settings)
                         end
                     }
                 }