{"body":"\nuse Raylib::Bindings;\nuse NativeCall;\n\n\n## Initialization\n\nconstant screen-width = 1024;\nconstant screen-height = 768;\n\ninit-window(screen-width, screen-height, \"Blizzard Simulator\");\nmy int32 $null;\n#my $one-pointer = CArray[int32].new;\n#$one-pointer[0] = 1;\n\nmy $one-pointer = nativecast(Pointer[int32], 1);\n\nmy int32 $one = 1;\nmy int32 $zero = 0;\nmy int32 $size = 48;\n\nmy $code-points = CArray[int32].new;\nmy int32 $code-point-a = load-codepoints(\"❆\", $one-pointer);\n$code-points[0] = $code-point-a;\n\n\n\n#my $font = load-font-ex(\"/Users/Longwalker/Library/Fonts/PragmataProI_0829.ttf\", $size, $zero, $zero);\nmy $snow-a = load-font-ex(\"/Users/Longwalker/Library/Fonts/PragmataProI_0829.ttf\", $size, $code-points, $one);\nmy $s = load-utf8($code-points, $one);\ndd $s;\nmy $white = init-white;\nmy $black = init-black;\n\n## Implementation Classes\n\nclass Snowflake {\n    # Singleton\n#    my @flakes = <❆>;\n    my @flakes = <*>;\n    my %textures;\n\n    method initialize-textures {\n        for @flakes -> $flake {\n#            my $image = image-text($flake, 32, $white);\n            my $image = image-text-ex($snow-a, $flake, 32e0, 0e0, $white);\n            %textures«$flake» = load-texture-from-image($image);\n            unload-image($image);\n        }\n    }\n\n    method unload-textures {\n        unload-texture($_) for %textures.values;\n    }\n\n    # Object\n    has $.flake = @flakes.roll;\n    has Vector2 $.pos is required is rw;\n    has $.weight = (1,1.5,2.5).roll;\n\n    method texture {\n        %textures«$!flake»\n    }\n}\n\nclass SnowfallLayer {\n    has @.snowflakes;\n    has Num $.scale is required;\n\n    has Vector2 $.wind is rw = Vector2.init(1.001e0 + (0.015e0 * $!scale), 1.008e0);\n\n    has Bool $.started = False;\n    has Supply $!update-supply = Supply.interval($!scale / 10);\n    has Supply $!more-supply = Supply.interval($!scale * 1.5, $!scale);\n\n    submethod TWEAK() {\n        self!fill-snowflakes;\n        $!update-supply.act: {\n            $!started && @!snowflakes.map: {\n                $_.pos.y = ($_.pos.y + (^10).roll * $_.weight * $!scale) * $!wind.y;\n                $_.pos.x = $_.pos.x * $!wind.x;\n            }\n        };\n        $!more-supply.act: { $!started && self!fill-snowflakes };\n    }\n\n    method !fill-snowflakes() {\n        @!snowflakes = @!snowflakes.grep: *.pos.y <= screen-height;\n        for (^screen-width).pick((1..32).roll - 8 * $!scale) -> $x {\n            my $pos = Vector2.init($x.Num, 0e0);\n            @!snowflakes.push: Snowflake.new: :$pos;\n        }\n    }\n    method start  { $!started = True }\n    method render {\n        for @!snowflakes -> $flake {\n            draw-texture-ex($flake.texture, $flake.pos, 0e0, $!scale, $white);\n        }\n    }\n}\n\nclass SnowfallRenderer {\n    has @.layers;\n\n    submethod TWEAK {\n        constant scales = (0.1, 0.2, 0.2, 0.3, 0.3, 0.4)>>.Num;\n        for scales -> $scale {\n            @!layers.push: SnowfallLayer.new: :$scale;\n        }\n    }\n\n    method start  { @!layers.map: *.start }\n    method render { @!layers.map: *.render }\n}\n\n## Rendering\nSnowflake.initialize-textures;\nmy $renderer = SnowfallRenderer.new;\n$renderer.start;\nmy $flake = Snowflake.new: pos => Vector2.init((screen-width/2).Num,(screen-height/2).Num);\nwhile !window-should-close {\n    begin-drawing;\n        clear-background($black);\n        $renderer.render;\n    end-drawing;\n}\n\nSnowflake.unload-textures;\nclose-window;\n","name":"","extension":"pl","url":"https://www.irccloud.com/pastebin/U2aJZd9g","modified":1699954913,"id":"U2aJZd9g","size":3388,"lines":129,"own_paste":false,"theme":"","date":1699954913}