54 lines
1.5 KiB
CoffeeScript
54 lines
1.5 KiB
CoffeeScript
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field = [1..10*16].map -> 0
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background = [1..10*16].map -> 10+~~(Math.random()*10)
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shapes = ["xxxx", "xx\nxx", "_x_\nxxx", "x__\nxxx", "__x\nxxx", "xx_\n_xx", "_xx\nxx"]
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to_xy = (position) ->
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x: position%10
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y: ~~(position/10)
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rect = (canvas, position, w, h, color) ->
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context = canvas.getContext("2d")
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p = to_xy(position)
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context.fillStyle = "##{color}"
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context.fillRect(p.x*20, p.y*20, w, h)
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brick = (canvas, shape, position) ->
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pos = position
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for panel in shape
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rect(canvas, pos, 20, 20, "ff0000") if panel is "x"
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switch panel
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when "x", "_" then pos += 1
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when "\n" then pos += 10 - shape.indexOf("\n")
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rotate = (shape, angle) ->
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return shape if angle is 0
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if shape.length is 4
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return shape if shape.indexOf("\n") is 2
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return shape if angle%2 is 0
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return shape.split("").join("\n")
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rotate_order = [2, 5, 1, 4, 0, 3]
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reordered = shape.split("").filter (p) -> p isnt "\n"
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if angle is 1
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reordered = reordered.map (p, i) ->
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reordered[rotate_order[i]]
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reordered = reordered.reverse() if angle > 1
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ret = []
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for p, i in reordered
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ret.push(p)
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# FIXME: Something is wrong here ...
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ret.push("\n") if (angle%2 isnt 0 and i%2 is 1) or (angle%2 is 0 and i%2 is 1)
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console.log(ret)
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ret.join("")
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main_loop = (canvas)->
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canvas.width = 20*10
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canvas.height = 20*16
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for color, pos in background
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rect(canvas, pos, 20, 20, "#{color}#{color}#{color}")
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brick(canvas, rotate(shapes[3], 2), 3)
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main_loop(document.getElementById('c'))
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