69 lines
1.3 KiB
Ruby
69 lines
1.3 KiB
Ruby
require_relative 'ai'
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class Enemy
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attr_accessor :x, :y, :w, :h
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def self.load(path, w, h, s)
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# Once artwork is done need to load each animation here.
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# But as artwork takes time, for now just load a single image.
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@sprite = Gosu::Image.new(path, retro: true)
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@i_w = w
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@i_h = h
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@s = s
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end
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def self.sprite
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@sprite
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end
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def self.frame_size
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[@i_w, @i_h, @s]
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end
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def initialize(x, y)
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@x = x
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@y = y
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@w = 25
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@h = 30
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@ai = EnemyAI.new(self, :chase)
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$bus.on(:collides?) do |rect|
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next collides?(rect) ? :enemy : nil
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end
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end
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def rect
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[@x - @w / 2, @y - @h / 2, @w, @h]
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end
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def collides?(rect)
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return true if intersects?(self.rect, rect)
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false
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end
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def update(dt)
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player_pos = $bus.get(:player_position)
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@ai.update(*player_pos, dt) if player_pos
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end
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def draw
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cam_x, cam_y = $bus.get(:camera_pos) || [0, 0]
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screen_x = @x - cam_x
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screen_y = @y - cam_y
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self.class.sprite.draw(
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screen_x - self.class.frame_size[0],
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screen_y - self.class.frame_size[1],
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screen_y - self.class.frame_size[1],
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self.class.frame_size[2],
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self.class.frame_size[2]
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)
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Gosu.draw_rect(screen_x - @w / 2, screen_y - @h / 2, @w, @h, Gosu::Color.new(0x40FF0000), Float::INFINITY) if $bus.get(:settings, :debug)
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@ai.draw
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end
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end |