add explosion particles on player death

obj/game/ExplodeParticle.lua

@@ -0,0 +1,51 @@
+---@class ExplodeParticle:GameObject
+---@field color table
+---@field r number
+---@field s number
+---@field v number
+---@field lw number
+local ExplodeParticle = GameObject:extend()
+
+function ExplodeParticle:new(area, x, y, opts)
+    ExplodeParticle.super.new(self, area, x, y, opts)
+    -- particle effect's color
+    self.color = opts.color or COLORS.default
+    -- particle angle
+    self.r = random(0, 2*math.pi)
+    -- scale
+    self.s = opts.s or random(2,3)
+    -- velocity
+    self.v = opts.v or random(75, 150)
+    -- line width
+    self.lw = opts.lw or 2
+
+    self.timer:tween(
+        opts.d or random(.3,.5),
+        self, {s = 0, v = 0, lw = 0},
+        'linear',
+        function() self:kill() end
+    )
+end
+
+---Updates ExplodeParticle
+---@param dt number delta time
+function ExplodeParticle:update(dt)
+    ExplodeParticle.super.update(self, dt)
+    self.x = self.x + self.v*math.cos(self.r)*dt
+    self.y = self.y + self.v*math.sin(self.r)*dt
+    --self.r = self.r + self.v*dt
+end
+
+---Draws ExplodeParticle
+function ExplodeParticle:draw()
+    ExplodeParticle.super.draw(self)
+    pushRotateScale(self.x, self.y, self.r)
+    love.graphics.setColor(self.color)
+    love.graphics.setLineWidth(self.lw)
+    love.graphics.line(self.x - self.s, self.y, self.x + self.s, self.y)
+    love.graphics.setLineWidth(1)
+    love.graphics.setColor(COLORS.default)
+    love.graphics.pop()
+end
+
+return ExplodeParticle

obj/game/Player.lua

@@ -82,4 +82,11 @@ function Player:shoot()
     proj.timer:tween(0.5, proj, {v = 400}, 'linear')
 end
 
+function Player:kill()
+    for i=1, random(8,12) do
+        self.area:addGameObject('ExplodeParticle', self.x, self.y)
+    end
+    self:destroy()
+end
+
 return Player