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DragonRuby Game Toolkit VR (Virtual Reality/Oculus Quest) - Let There Be Light https://www.youtube.com/watch?v=S-baJwEjUsk&ab_channel=AmirRajan
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| # https://www.youtube.com/watch?v=S-baJwEjUsk&ab_channel=AmirRajan | |
| class Game | |
| attr_gtk | |
| def tick | |
| grid.origin_center! | |
| defaults | |
| calc | |
| render | |
| end | |
| def defaults | |
| state.max_star_distance ||= 100 | |
| state.min_star_distance ||= 0.001 | |
| state.star_distance ||= 0.001 | |
| state.center.x ||= 0 | |
| state.center.y ||= 0 | |
| state.center.z ||= 30 | |
| state.max.x ||= 640 | |
| state.max.y ||= 640 | |
| state.max.z ||= 50 | |
| state.stars ||= 500.map { random_point_on_sphere } | |
| end | |
| def calc | |
| if inputs.controller_one.key_down.a && !state.it_has_begun | |
| state.it_has_begun = true | |
| outputs.sounds << "sounds/ode-to-joy.wav" | |
| end | |
| state.star_distance += 0.25 ** 2 if state.it_has_begun | |
| end | |
| def render | |
| outputs.background_color = [0, 0, 0] | |
| if state.star_distance <= 1.0 | |
| text_alpha = (1 - state.star_distance) * 255 | |
| outputs.labels << { x: 0, y: 50, text: "Let there be light.", r: 255, g: 255, b: 255, size_enum: 1, alignment_enum: 1, a: text_alpha } | |
| outputs.labels << { x: 0, y: 25, text: "(press a)", r: 255, g: 255, b: 255, size_enum: -2, alignment_enum: 1, a: text_alpha } | |
| end | |
| outputs.sprites << star_sprites | |
| end | |
| def random_point_on_sphere | |
| r = { xr: 2.randomize(:ratio) - 1, | |
| yr: 2.randomize(:ratio) - 1, | |
| zr: 2.randomize(:ratio) - 1 } | |
| if (r.xr ** 2 + r.yr ** 2 + r.zr ** 2) > 1.0 | |
| return random_point_on_sphere | |
| else | |
| return r | |
| end | |
| end | |
| def star_sprites | |
| state.stars.map do |s| | |
| w = (32 * state.star_distance).clamp(1, 32) | |
| h = (32 * state.star_distance).clamp(1, 32) | |
| x = (state.max.x * state.star_distance) * s.xr | |
| y = (state.max.y * state.star_distance) * s.yr | |
| z = state.center.z + (state.max.z * state.star_distance * 10 * s.zr) | |
| angle_x = Math.atan2(z - 600, y).to_degrees + 90 | |
| angle_y = Math.atan2(z - 600, x).to_degrees + 90 | |
| draw_x = x - w.half | |
| draw_y = y - 40 - h.half | |
| draw_z = z | |
| { x: draw_x, | |
| y: draw_y, | |
| z: draw_z, | |
| w: w, | |
| h: h, | |
| angle_x: angle_x, | |
| angle_y: angle_y, | |
| path: 'sprites/star.png' } | |
| end | |
| end | |
| end | |
| $game = Game.new | |
| def tick_game args | |
| $game.args = args | |
| $game.tick | |
| end |
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Could some explanation be added, e. g. what is VR? I saw the link from reddit and then youtube but I am not familiar with any of this.