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37 lines
1.0 KiB
Ruby
37 lines
1.0 KiB
Ruby
class IMICRTS
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class SmokeEmitter < ParticleEmitter
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def setup
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@time_to_live = Float::INFINITY
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@particle_time_to_live = 2_500
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@frequency = 10.0
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@color = Gosu::Color.rgba(255, 255, 255, 255.0 * 0.4)
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@direction = CyberarmEngine::Vector.up
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@direction.y = 4.5
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@jitter = 25.0
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@images = Gosu::Image.load_tiles("#{IMICRTS::ASSETS_PATH}/smoke/smoke.png", 32, 32, retro: false)
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end
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def emit
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super
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@particles.last.factor = CyberarmEngine::Vector.new(0.1, 0.1)
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end
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def update
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super
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@particles.each do |particle|
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life_cycle = (Gosu.milliseconds - particle.born_at.to_f) / particle.time_to_live
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scale = (2.0 * life_cycle) + 0.25
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particle.factor.x = scale
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particle.factor.y = scale
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particle.color.alpha = ((255.0 * (1.0 - life_cycle)) - 255.0 * 0.4).clamp(0.0, 255.0)
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particle.angle += rand(0.1..0.5)
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particle.direction.x = Math.cos(Gosu.milliseconds / 1_000.0) * 0.162
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end
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end
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end
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end |