84 lines
2.1 KiB
Ruby
84 lines
2.1 KiB
Ruby
class Placeable
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SIZE = [25, 15]
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# The base class for all placeables in the game. Placeables are things that can be interacted with, but do not move (unlike characters).
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# They cannot be walked through, but can be interacted with (e.g. a chest can be opened, a torch can be lit, a radar can be used).
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# They are placed at the center of a tile, and their position is represented by the tile coordinate
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# An object is one that is placed at the center of a tile (radar, torch & chest)
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attr_reader :x, :y
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def initialize(x, y)
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@x = x
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@y = y
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@frames_count = 0
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@spritesheet = nil
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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 rect
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[@x * 120 + 90 - SIZE[0] / 2, @y * 120 + 90 - SIZE[1], SIZE[0], SIZE[1]]
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end
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def update
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# For now, placeables don't have any behavior
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end
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def draw
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return unless @spritesheet
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cam_x, cam_y = $bus.get(:camera_pos) || [0, 0]
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screen_x = @x * 120 + 90 - cam_x
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screen_y = @y * 120 + 90 - cam_y
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elapsed = Gosu.milliseconds / 1000.0
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frame_index = ((elapsed * @frames_count).floor) % @frames_count
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@spritesheet[frame_index].draw(screen_x - 20, screen_y - 20, screen_y, 2, 2)
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return unless DEBUG
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# collision box centered on same point
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Gosu.draw_rect(screen_x - SIZE[0] / 2, screen_y - SIZE[1], SIZE[0], SIZE[1], Gosu::Color.new(0x88ff0000), Float::INFINITY)
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end
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end
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class Radar < Placeable
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def initialize(x, y)
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super(x, y)
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@frames_count = 4
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@spritesheet = Gosu::Image.load_tiles("assets/images/radar.png", 20, 20, retro: true)
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end
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end
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class ObjectHandler
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attr_reader :objects
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def initialize
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start_room_coords = $bus.get(:start_room_coords)
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@objects = [Radar.new(start_room_coords[0] / 2 - 1, start_room_coords[1] / 2 - 1)]
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$bus.on_retrievable(:object_at) do |x, y|
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next @objects.find { |obj| obj.x == x && obj.y == y }
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end
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end
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def add(object)
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@objects << object
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end
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def collides?(rect)
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@objects.any? { |obj| obj.collides?(rect) }
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end
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def update
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@objects.each(&:update)
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end
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def draw
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@objects.each(&:draw)
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end
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end |