Collection of small snippets for potentially useful things in DragonRuby
Intended to be copy/pasted.
Last active
March 13, 2026 15:08
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DragonRuby snippets
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| r = pixel&0xFF | |
| g = (pixel>>8)&0xFF | |
| b = (pixel>>16)&0xFF | |
| a = (pixel>>24)&0xFF |
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| def time_block(name, &block) | |
| start_time = Time.now | |
| block.call | |
| diff = Time.now - start_time | |
| $outputs.debug << "%s: %0.3f" % [name, diff] | |
| end |
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| $gtk.disable_console |
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| module FromNow | |
| @@callbacks ||= nil | |
| @@last_tick ||= -1 | |
| def FromNow.reset | |
| @@last_tick = -1 | |
| @@callbacks = nil | |
| end | |
| def FromNow.tick(t=$args.tick_count) | |
| if t < @@last_tick # clear callbacks after $gtk.reset | |
| FromNow.reset | |
| return | |
| end | |
| @@last_tick = t | |
| return unless list = @@callbacks&.delete(t) | |
| i = 0; n = list.size | |
| while i < n | |
| list[i].call | |
| i += 1 | |
| end | |
| end | |
| def from_now(&blk) | |
| n = self.round | |
| if n == 0 | |
| blk.call | |
| else | |
| @@callbacks ||= Hash.new { |hash,tick| hash[tick] = [] } | |
| @@callbacks[$args.tick_count + n] << blk | |
| end | |
| end | |
| # just so you can do "5.frames.from_now { }" | |
| def frames() = self | |
| end | |
| Numeric.include FromNow |
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| # Adjust to taste, or hook up to your volume slider in game? | |
| $sound_volume = 0.5 | |
| $saved_mute_volume = nil | |
| def sound_toggle_mute | |
| if $saved_mute_volume | |
| $sound_volume = $saved_mute_volume | |
| $saved_mute_volume = nil | |
| else | |
| $saved_mute_volume = $sound_volume | |
| $sound_volume = 0.0 | |
| end | |
| sound_adjust_playing_sounds $sound_volume | |
| end | |
| def sound_adjust_playing_sounds to_gain | |
| $gtk.args.audio.each do |_, a| | |
| a.gain = to_gain | |
| end | |
| end | |
| def play_sound in_sound | |
| sound = in_sound.copy | |
| adjusted_gain = 1.0 | |
| if sound.key?(:gain) | |
| adjusted_gain = sound[:gain] | |
| end | |
| sound[:gain] = adjusted_gain * $sound_volume | |
| $gtk.args.audio[sound[:input]] = sound | |
| end | |
| # Example usage: | |
| # Start a backgrounbd looping sound | |
| # play_sound({ input: "sounds/ship-ambience.ogg", looping: true }) | |
| # | |
| # Play a sound effect that is already gained down | |
| # play_sound({ input: "sounds/loud-boom.wav", gain: 0.8 }) |
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