functional, speed controlled by expansionRate

src/Particle.lua

@@ -0,0 +1,50 @@
+local class = require "lib.middleclass"
+local random = math.random --TODO change out as needed later
+local floor = math.floor
+local lg = love.graphics
+
+local Particle = class("Particle")
+
+local lifetimeRandomizer = love.math.newRandomGenerator(13--[[os.time()]])
+local maxLifetime = 10 --NOTE can only used fixed "randomization" as long as maxLifetime is constant ?
+local lifetimes = {}
+
+function Particle:initialize(radius, expansionRate)
+    --NOTE radius is used as a box, not an actual radius...
+    --TODO FIX THIS IMMEDIATEITGJE
+
+    if not (radius > 1) then radius = 1 end -- stop randomization errors
+
+    self.x = random(-radius, radius)
+    self.y = random(-radius, radius)
+    self.vx = random(-expansionRate, expansionRate) --TODO make max velocity change based on radius??
+    self.vy = random(-expansionRate, expansionRate)
+
+    self.type = floor(random(radius)) -- number of types should increase over time
+    if self.type > #lifetimes then
+        for i = #lifetimes, self.type do
+            lifetimes[i] = lifetimeRandomizer:random(maxLifetime)
+        end
+    end
+    self.lifetime = lifetimes[self.type]
+
+    --[[ debug
+    for k,v in pairs(lifetimes) do
+        print(k,v)
+    end
+    print(self.lifetime)
+    ]]
+end
+
+function Particle:update(dt)
+    self.x = self.x + (self.vx * dt)
+    self.y = self.y + (self.vy * dt)
+    --TODO shouldn't this update its life and set self nil here??
+end
+
+function Particle:draw()
+    lg.point(self.x + lg.getWidth()/2, self.y + lg.getHeight()/2)
+    --lg.circle("fill", self.x + lg.getWidth()/2, self.y + lg.getHeight()/2, 1)
+end
+
+return Particle