Initial commit

koptilnya/engine_sound.txt

@@ -0,0 +1,79 @@
+--@include libs/utils.txt
+--@client
+
+require("libs/utils.txt")
+
+EngineSound = class("EngineSound")
+
+accessorFunc(EngineSound, "_masterVolume", "MasterVolume", 1)
+accessorFunc(EngineSound, "_parent", "Parent", chip())
+
+function EngineSound:initialize(soundsMap)
+    self._rpm = 0
+    self._soundsMap = soundsMap
+    self._sources = {}
+    
+    for k, v in pairs(soundsMap) do
+        bass.loadURL(v.link, "3d noblock", function(snd, err, errtxt)
+            if snd then
+                snd:setPos(self:getParent():getPos())
+                snd:setLooping(true)
+                snd:setVolume(0)
+                
+                v.source = snd
+                table.insert(self._sources, snd)
+            elseif errtext then
+                error(errtxt)
+            end
+        end)
+    end
+    
+    hook.add("think", "EngineSound_think", function()
+        for _, v in pairs(self._sources) do
+            v:setPos(self:getParent():getPos())
+        end
+    end)
+end
+
+local function fadeIn(rpm, range)
+    local fadeIn = 1
+    
+    if range and range[1] != range[2] then
+        fadeIn = math.min(math.max((rpm + (range[2] - range[1] * 2)) / (range[2] - range[1]), 1) - 1, 1)
+    end
+    
+    return fadeIn
+end
+
+local function fadeOut(rpm, range)
+    local fadeOut = 1
+    
+    if range and range[1] != range[2] then
+        fadeOut = math.min(math.max((rpm + (range[1] - range[2] * 2)) / (range[1] - range[2]), 1) - 1, 1)
+    end
+    
+    return fadeOut
+end
+
+function EngineSound:setRPM(rpm)
+    self._rpm = rpm
+    
+    for _, v in pairs(self._soundsMap) do
+        if v.source then
+            local pitch = rpm / v.rootPitch
+            local fadeIn = fadeIn(rpm, v.fadeIn)
+            local fadeOut = fadeOut(rpm, v.fadeOut)
+            
+            v.source:setVolume(math.max(self:getMasterVolume() * (fadeIn + fadeOut - 1), 0.01))
+            v.source:setPitch(math.max(pitch, 0.01))
+        end
+    end
+end
+
+function EngineSound:getRPM()
+    return self._rpm
+end
+
+function EngineSound:getSources()
+    return self._sources
+end