55 lines
1.2 KiB
OCaml
55 lines
1.2 KiB
OCaml
let tile_size = 40
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let width = 835
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let height = 635
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let canvas = Jv.get Jv.global "canvas"
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let context = Jv.call canvas "getContext" [| Jv.of_string "2d" |]
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let init_bg () =
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Jv.set canvas "width" (Jv.of_int width);
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Jv.set canvas "height" (Jv.of_int height);
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Jv.set context "fillStyle" (Jv.of_string "#FF1188");
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Jv.call context "fillRect"
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[| Jv.of_int 0; Jv.of_int 0; Jv.of_int width; Jv.of_int height |]
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let window = Jv.get Jv.global "window"
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let () =
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let (_ : Jv.t) =
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Jv.call window "addEventListener" [| Jv.of_string "load"; Jv.repr init_bg |]
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in
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()
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let tiles_per_w = width / tile_size
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let tiles_per_h = height / tile_size
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let orig_x = (width - (tiles_per_w * tile_size)) / 2
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let orig_y = (height - (tiles_per_h * tile_size)) / 2
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let grass = Jv.get Jv.global "grass"
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let draw_background () =
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for x = 0 to tiles_per_w - 1 do
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for y = 0 to tiles_per_h - 1 do
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let (_ : Jv.t) =
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Jv.call context "drawImage"
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[| grass
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; Jv.of_int (orig_x + (x * tile_size))
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; Jv.of_int (orig_y + (y * tile_size))
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|]
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in
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()
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done
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done
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let () =
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let (_ : Jv.t) =
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Jv.call window "addEventListener"
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[| Jv.of_string "load"; Jv.repr draw_background |]
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in
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()
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