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require 'ruby2d'
# Number of sprites in the sheet, automatically gets calculated
@iter = 0
# Displays the sprite index
@text = Text.new(
@iter,
x:0, y: 0,
size: 20,
)
# Amount of sprites in rows/columns
@rows = 13
@columns = 23
# Size of an individual sprite
@width = 64
@height = 64
# Holds manual coordinates
@animations = {}
# Generates the manual coordinates
(0...@rows).each do |row|
(0...@columns).each do |column|
@animations[@iter] = [{
x: column * @width, y: row * @height,
width: @width, height: @height
}]
@iter += 1
end
end
# The sprite
@sprite = Sprite.new(
'sheet.png',
x: 50, y:50,
clip_width: 64,
clip_height: 64,
time: 300,
animations: @animations
)
# The frame number of Ruby2D
@frame = 0
update do
@frame += 1
# Displays a new sprite every half a second
@sprite.play(
animation: ((@frame/30) % @iter),
loop: true
)
@text.text = ((@frame/30) % @iter)
end
show
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