167 lines
7.2 KiB
Forth
167 lines
7.2 KiB
Forth
# Conway's Game of Life in a Hestified way
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# https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
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# https://ivanish.ca/hest-podcast
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#
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# To build:
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# $ ./translate life.mu
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# To run:
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# $ qemu-system-i386 -enable-kvm code.img
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fn main screen: (addr screen), keyboard: (addr keyboard), data-disk: (addr disk) {
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var env-storage: environment
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var env/esi: (addr environment) <- address env-storage
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initialize-environment env
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{
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render screen, env
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pause env
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edit keyboard, env
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loop
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}
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}
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type environment {
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zoom: int # 0 = 1024 px per cell; 5 = 4px per cell; each step adjusts by a factor of 4
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tick: int
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}
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fn render screen: (addr screen), _self: (addr environment) {
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clear-screen screen
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var self/esi: (addr environment) <- copy _self
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var zoom/eax: (addr int) <- get self, zoom
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compare *zoom, 0
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{
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break-if-!=
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render0 screen, self
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return
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}
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}
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fn render0 screen: (addr screen), _self: (addr environment) {
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var self/esi: (addr environment) <- copy _self
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# cell border
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draw-vertical-line screen, 0xc0/x, 0/ymin, 0x300/ymax, 0x16/color=dark-grey
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draw-vertical-line screen, 0x340/x, 0/ymin, 0x300/ymax, 0x16/color=dark-grey
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draw-horizontal-line screen, 0x40/y, 0/xmin, 0x400/xmax, 0x16/color=dark-grey
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draw-horizontal-line screen, 0x2c0/y, 0/xmin, 0x400/xmax, 0x16/color=dark-grey
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# neighboring inputs, corners
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draw-rect screen, 0x90/xmin, 0x10/ymin, 0xb0/xmax, 0x30/ymax, 0xf/alive
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draw-rect screen, 0x350/xmin, 0x10/ymin, 0x370/xmax, 0x30/ymax, 0x1a/dead
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draw-rect screen, 0x90/xmin, 0x2d0/ymin, 0xb0/xmax, 0x2f0/ymax, 0xf/alive
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draw-rect screen, 0x350/xmin, 0x2d0/ymin, 0x370/xmax, 0x2f0/ymax, 0xf/alive
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# neighboring inputs, edges
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draw-rect screen, 0x1f0/xmin, 0x10/ymin, 0x210/xmax, 0x30/ymax, 0xf/alive
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draw-rect screen, 0x90/xmin, 0x170/ymin, 0xb0/xmax, 0x190/ymax, 0x1a/dead
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draw-rect screen, 0x1f0/xmin, 0x2d0/ymin, 0x210/xmax, 0x2f0/ymax, 0xf/alive
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draw-rect screen, 0x350/xmin, 0x170/ymin, 0x370/xmax, 0x190/ymax, 0xf/alive
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# sum node
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draw-rect screen, 0x170/xsmin, 0x140/ysmin, 0x190/xsmax, 0x160/ysmax, 0x40/color
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set-cursor-position screen, 0x2d/scol, 0x13/srow
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draw-text-wrapping-right-then-down-from-cursor-over-full-screen screen, "+", 0xf/color, 0/bg
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# conveyers from neighboring inputs to sum node
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draw-monotonic-bezier screen, 0xa0/x0 0x20/y0, 0x100/x1 0x150/ys, 0x180/x2 0x150/ys, 4/color
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draw-monotonic-bezier screen, 0xa0/x0 0x180/y0, 0xc0/x1 0x150/ys, 0x180/x2 0x150/ys, 4/color
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draw-monotonic-bezier screen, 0xa0/x0 0x2e0/y0, 0x100/x1 0x150/ys, 0x180/x2 0x150/ys, 4/color
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draw-monotonic-bezier screen, 0x200/x0 0x20/y0, 0x180/x1 0x90/y1, 0x180/x2 0x150/ys, 4/color
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draw-monotonic-bezier screen, 0x200/x0 0x2e0/y0, 0x180/x1 0x200/y1, 0x180/x2 0x150/ys, 4/color
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draw-monotonic-bezier screen, 0x360/x0 0x20/y0, 0x180/x1 0xc0/y1, 0x180/x2 0x150/ys, 4/color
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draw-monotonic-bezier screen, 0x360/x0 0x180/y0, 0x35c/x1 0x150/ys, 0x180/x2 0x150/ys, 4/color
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draw-monotonic-bezier screen, 0x360/x0 0x2e0/y0, 0x180/x1 0x200/y1, 0x180/x2 0x150/ys, 4/color
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# filter node
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draw-rect screen, 0x200/xfmin, 0x180/yfmin, 0x220/xfmax, 0x1a0/yfmax, 0x31/color
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set-cursor-position screen, 0x3f/fcol, 0x17/frow
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draw-text-wrapping-right-then-down-from-cursor-over-full-screen screen, "?", 0xf/color, 0/bg
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# conveyer from sum node to filter node
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draw-line screen 0x180/xs, 0x150/ys, 0x210/xf, 0x190/yf, 0xa2/color
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# cell outputs at corners
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draw-rect screen, 0xd0/xmin, 0x50/ymin, 0xf0/xmax, 0x70/ymax, 0xf/alive
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draw-rect screen, 0x310/xmin, 0x50/ymin, 0x330/xmax, 0x70/ymax, 0xf/alive
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draw-rect screen, 0xd0/xmin, 0x290/ymin, 0xf0/xmax, 0x2b0/ymax, 0xf/alive
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draw-rect screen, 0x310/xmin, 0x290/ymin, 0x330/xmax, 0x2b0/ymax, 0xf/alive
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# cell outputs at edges
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draw-rect screen, 0x1f0/xmin, 0x50/ymin, 0x210/xmax, 0x70/ymax, 0xf/alive
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draw-rect screen, 0xd0/xmin, 0x170/ymin, 0xf0/xmax, 0x190/ymax, 0xf/alive
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draw-rect screen, 0x1f0/xmin, 0x290/ymin, 0x210/xmax, 0x2b0/ymax, 0xf/alive
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draw-rect screen, 0x310/xmin, 0x170/ymin, 0x330/xmax, 0x190/ymax, 0xf/alive
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# clock
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var tick-a/eax: (addr int) <- get self, tick
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set-cursor-position screen, 0x78/x, 0/y
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draw-int32-decimal-wrapping-right-then-down-from-cursor-over-full-screen screen, *tick-a, 7/fg 0/bg
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# time-variant portion: 16 repeating steps
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var progress/eax: int <- copy *tick-a
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progress <- and 0xf
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# 7 time steps for getting inputs to sum
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{
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compare progress, 7
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break-if->=
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var u/xmm7: float <- convert progress
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var six/eax: int <- copy 6
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var six-f/xmm0: float <- convert six
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u <- divide six-f
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# points on conveyers from neighboring cells
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draw-bezier-point screen, u, 0xa0/x0 0x20/y0, 0x100/x1 0x150/ys, 0x180/x2 0x150/ys, 7/color, 4/radius
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draw-bezier-point screen, u, 0xa0/x0 0x180/y0, 0xc0/x1 0x150/ys, 0x180/x2 0x150/ys, 7/color, 4/radius
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draw-bezier-point screen, u, 0xa0/x0 0x2e0/y0, 0x100/x1 0x150/ys, 0x180/x2 0x150/ys, 7/color, 4/radius
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draw-bezier-point screen, u, 0x200/x0 0x20/y0, 0x180/x1 0x90/y1, 0x180/x2 0x150/ys, 7/color, 4/radius
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draw-bezier-point screen, u, 0x200/x0 0x2e0/y0, 0x180/x1 0x200/y1, 0x180/x2 0x150/ys, 7/color, 4/radius
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draw-bezier-point screen, u, 0x360/x0 0x20/y0, 0x180/x1 0xc0/y1, 0x180/x2 0x150/ys, 7/color, 4/radius
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draw-bezier-point screen, u, 0x360/x0 0x180/y0, 0x35c/x1 0x150/ys, 0x180/x2 0x150/ys, 7/color, 4/radius
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draw-bezier-point screen, u, 0x360/x0 0x2e0/y0, 0x180/x1 0x200/y1, 0x180/x2 0x150/ys, 7/color, 4/radius
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return
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}
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# two time steps for getting count to filter
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progress <- subtract 7
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{
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compare progress, 2
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break-if->=
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progress <- increment # (0, 1) => (1, 2)
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var u/xmm7: float <- convert progress
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var three/eax: int <- copy 3
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var three-f/xmm0: float <- convert three
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u <- divide three-f
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draw-linear-point screen, u, 0x180/xs, 0x150/ys, 0x210/xf, 0x190/yf, 7/color, 4/radius
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set-cursor-position screen, 0x3a/scol, 0x16/srow
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draw-int32-decimal-wrapping-right-then-down-from-cursor-over-full-screen screen, 3, 0xf/fg 0/bg
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return
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}
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# final 7 time steps for updating output
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progress <- subtract 2
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# TODO points on conveyers to outputs
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}
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fn draw-bezier-point screen: (addr screen), u: float, x0: int, y0: int, x1: int, y1: int, x2: int, y2: int, color: int, radius: int {
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var _cy/eax: int <- bezier-point u, y0, y1, y2
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var cy/ecx: int <- copy _cy
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var cx/eax: int <- bezier-point u, x0, x1, x2
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draw-disc screen, cx, cy, radius, color, 0xf/border-color=white
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}
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fn draw-linear-point screen: (addr screen), u: float, x0: int, y0: int, x1: int, y1: int, color: int, radius: int {
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var _cy/eax: int <- line-point u, y0, y1
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var cy/ecx: int <- copy _cy
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var cx/eax: int <- line-point u, x0, x1
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draw-disc screen, cx, cy, radius, color, 0xf/border-color=white
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}
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fn edit keyboard: (addr keyboard), _self: (addr environment) {
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var self/esi: (addr environment) <- copy _self
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var key/eax: byte <- read-key keyboard
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# TODO: hotkeys
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var dest/eax: (addr int) <- get self, tick
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increment *dest
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}
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fn pause _self: (addr environment) {
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var self/esi: (addr environment) <- copy _self
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var i/ecx: int <- copy 0
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{
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compare i, 0x10000000
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break-if->=
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i <- increment
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loop
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}
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}
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fn initialize-environment _self: (addr environment) {
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var self/esi: (addr environment) <- copy _self
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}
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