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build/ludus.mjs
219
build/ludus.mjs
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@ -2,8 +2,221 @@ import init from "./out.mjs"
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const mod = await init()
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let result = null
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export function run (source) {
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const result = mod.ludus(source).value
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console.log(result)
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return JSON.parse(result)
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const output = mod.ludus(source).value
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// console.log(output)
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result = JSON.parse(output)
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return result
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}
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export function stdout () {
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return result.io.console.data
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}
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export function turtle_commands () {
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return result.io.turtle.data
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}
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export function p5_calls () {
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return p5_call_list
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}
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export function svg () {
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}
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const turtle_init = {
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position: [0, 0],
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heading: 0,
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pendown: true,
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pencolor: "white",
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penwidth: 1,
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visible: true
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}
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const colors = {
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black: [0, 0, 0, 255],
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silver: [192, 192, 192, 255],
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gray: [128, 128, 128, 255],
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white: [255, 255, 255, 255],
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maroon: [128, 0, 0, 255],
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red: [255, 0, 0, 255],
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purple: [128, 0, 128, 255],
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fuchsia: [255, 0, 255, 255],
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green: [0, 128, 0, 255],
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lime: [0, 255, 0, 255],
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olive: [128, 128, 0, 255],
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yellow: [255, 255, 0, 255],
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navy: [0, 0, 128, 255],
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blue: [0, 0, 255, 255],
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teal: [0, 128, 128, 255],
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aqua: [0, 255, 25, 255],
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}
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let turtle_states = [turtle_init]
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let background_color = "black"
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function last_state () {
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return turtle_states[turtle_states.length - 1]
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}
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function add (v1, v2) {
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const [x1, y1] = v1
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const [x2, y2] = v2
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return [x1 + x2, y1 + y2]
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}
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function mult (vector, scalar) {
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const [x, y] = vector
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return [x * scalar, y * scalar]
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}
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function unit_of (heading) {
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const turns = -heading + 0.25
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const radians = turn_to_rad(turns)
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[Math.cos (radians), Math.sin(radians)]
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}
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function command_to_state (previous, command) {
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const verb = command[0]
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switch (verb) {
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case "goto": {
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const [_, x, y] = command
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return {...previous, position: [x, y]}
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}
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case "home": {
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return {...previous, position: [0, 0], heading: 0}
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}
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case "right": {
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const [_, angle] = command
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const {heading} = previous
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return {...previous, heading: heading + angle}
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}
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case "left": {
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const [_, angle] = command
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const {heading} = previous
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return {...previous, heading: heading - angle}
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}
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case "forward": {
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const [_, steps] = command
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const {heading, position} = previous
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const unit = unit_of(heading)
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const move = mult(unit, steps)
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return {...previous, position: add(position, move)}
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}
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case "back": {
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const [_, steps] = command
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const {heading, position} = previous
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const unit = unit_of(heading)
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const move = mult(unit, -steps)
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return {...previous, position: add(position, move)}
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}
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case "penup": {
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return {...previous, pendown: false}
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}
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case "pendown": {
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return {...previous, pendown: true}
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}
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case "pendwith": {
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const [_, width] = command
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return {...previous, penwidth: width}
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}
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case "pencolor": {
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if (command.length = 2) {
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const [_, color] = command
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return {...previous, pencolor: color}
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} else {
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const [_, r, g, b, a] = command
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return {...previous, pencolor: [r, g, b, a]}
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}
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}
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case "setheading": {
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const [_, heading] = command
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return {...previous, heading: heading}
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}
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case "loadstate": {
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const [_, x, y, heading, visible, pendown, penwidth] = command
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// there are 7 fixed-arity arguments
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// color will either be the last one or four
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let pencolor = command.slice(7)
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// if there's one, it's a string, unpack it
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if (pencolor.length = 1) pencolor = pencolor[0]
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return {position: [x, y], heading, visible, pendown, penwidth, pencolor}
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}
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case "show": {
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return {...position, visible: true}
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}
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case "hide": {
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return {...position, visible: false}
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}
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case "background": {
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let color = command.slice(1)
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if (color.lengh = 1) color = color[0]
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background_color = color
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return
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}
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}
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}
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function are_eq (v1, v2) {
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const [x1, y1] = v1
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const [x2, y2] = v2
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return (x1 === x2) && (y1 === y2)
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}
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function state_to_call (prev, curr) {
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}
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const turtle_radius = 20
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const turtle_angle = 0.385
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const turtle_color = [255, 255, 255, 150]
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let p5_call_list = []
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function add_p5_call (call) {
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p5_call_list.push(call)
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}
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function rotate (vector, heading) {
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const radians = turn_to_rad(heading)
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const [x, y] = vector
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return [
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(x * cos (radians)) - (y * sin (radians)),
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(x * sin (radians)) + (y * cos (radians))
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]
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}
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function turn_to_rad (heading) {
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heading * 2 * Math.PI
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}
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function render_turtle () {
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const state = last_state ()
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if (!state.visible) return
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const [r, g, b, a] = turtle_color
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add_call("fill", r, g, b, a)
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const {heading, pencolor: [pen_r, pen_g, pen_b, pen_a], position: [x, y], pendown} = state
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const origin = [0, turtle_radius]
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const [x1, y1] = origin
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const [x2, y2] = rotate(origin, turtle_angle)
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const [x3, y3] = rotate(origin, -turtle_angle)
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add_p5_call(["push"])
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add_p5_call(["translate", x, y])
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add_p5_call(["rotate", turn_to_rad(heading)])
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add_p5_call(["noStroke"])
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add_p5_call(["beginShape"])
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add_p5_call(["vertex", x1, y1])
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add_p5_call(["vertex", x2, y2])
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add_p5_call(["vertex", x3, y3])
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add_p5_call(["endShape"])
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add_p5_call(["stroke", pen_r, pen_g, pen_b, pen_a])
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if (pendown) add_p5_call(["line", 0, 0, x1, y1])
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add_p5_call(["pop"])
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}
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@ -6489,7 +6489,7 @@ var __emscripten_stack_alloc = (a0) => (__emscripten_stack_alloc = wasmExports['
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var _emscripten_stack_get_current = () => (_emscripten_stack_get_current = wasmExports['emscripten_stack_get_current'])();
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var ___cxa_is_pointer_type = createExportWrapper('__cxa_is_pointer_type', 1);
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var dynCall_jiji = Module['dynCall_jiji'] = createExportWrapper('dynCall_jiji', 5);
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var ___emscripten_embedded_file_data = Module['___emscripten_embedded_file_data'] = 1840592;
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var ___emscripten_embedded_file_data = Module['___emscripten_embedded_file_data'] = 1822420;
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function invoke_i(index) {
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var sp = stackSave();
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try {
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BIN
build/out.wasm
BIN
build/out.wasm
Binary file not shown.
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@ -1,3 +1,9 @@
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import {run} from "./ludus.mjs"
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console.log(run(`let foo = 42; "{foo} bar"`))
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console.log(run(`
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forward! (100)
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right! (0.25)
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print! ("foobar")
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`))
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