64 lines
1.5 KiB
Crystal
64 lines
1.5 KiB
Crystal
class Funfriend::ChatterContext < Funfriend::WindowContext
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getter renderer : TextRenderer
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getter window_size : NamedTuple(width: Int32, height: Int32)
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property timer : Float64
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WINDOW_SIZE = {width: 256, height: 32}
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DEFAULT_DURATION = 10.0
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PADDING = 10
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def initialize(text : String, position : NamedTuple(x: Int32, y: Int32), duration : Float64 = DEFAULT_DURATION)
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sheet = FontMan.parse_bm(File.read "assets/fonts/SpaceMono.fnt")
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position_data = FontMan.position_text(text, sheet)
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@window_size = {
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width: position_data[:width] + PADDING * 2,
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height: position_data[:height] + PADDING * 2
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}
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super(
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title: "??__FUNFRIEND__?? > CHATTER",
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width: window_size[:width], height: window_size[:height],
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transparent: false
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)
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# just for initialization, let OpenGL know this is the current context
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window.make_context_current
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@timer = duration
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@renderer = TextRenderer.new(text, sheet, window_size[:width], window_size[:height])
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window.position = {
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x: position[:x] - window_size[:width]//2,
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y: position[:y] - window_size[:height]//2,
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}
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end
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def render(dt : Float64)
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# let OpenGL draw to it
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window.make_context_current
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LibGL.clear_color(0.0, 0.0, 0.0, 1.0)
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LibGL.clear(Buffer::Bit::Color)
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renderer.render(dt)
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end
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def update(dt : Float64)
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@timer = @timer - dt
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if @timer <= 0.0
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window.should_close
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end
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render(dt)
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window.swap_buffers
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end
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def clean_up
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renderer.clean_up
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end
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end
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