63 lines
1.3 KiB
Ruby
63 lines
1.3 KiB
Ruby
class OccamsRazor
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BASE_TIME = 0.2 # seconds per attack
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def initialize
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@time = 0
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@active = false
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@damage = 20
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@range = 45 # how many pixels from player center to enemy center the attack hits, this is a melee weapon so it should be small
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end
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def attack(direction)
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return if @active
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@active = true
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@time = BASE_TIME
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@direction = direction # radians
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@spread = Math::PI # 90° total arc
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# Check for enemies in range and deal damage
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player_x, player_y = $bus.get(:player_position)
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$bus.emit(:attack, player_x, player_y, @range, @damage)
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end
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def update(dt)
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return unless @active
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@time -= dt
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progress = @time / BASE_TIME
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@spread = (Math::PI) * progress
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if @time <= 0
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@active = false
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@time = 0
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end
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end
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def draw
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return unless @active
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px, py = $bus.get(:player_position)
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cam_x, cam_y = $bus.get(:camera_pos) || [0, 0]
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cx = px - cam_x
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cy = py - cam_y
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step = 0.1 # radians (~6°)
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angle_start = @direction - @spread
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angle_end = @direction + @spread
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alpha = ((@time / BASE_TIME) * 255).to_i
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color = Gosu::Color.new(alpha, 255, 255, 255)
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(angle_start..angle_end).step(step) do |rad|
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x = cx + Math.cos(rad) * @range
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y = cy + Math.sin(rad) * @range
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Gosu.draw_rect(x, y, 4, 4, color, Float::INFINITY)
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end
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end
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end |