first light

3 files changed, 297 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8516afb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+azer.svg
diff --git a/demo.lua b/demo.lua
new file mode 100755
index 0000000..bbf02ab
--- /dev/null
+++ b/demo.lua
@@ -0,0 +1,24 @@
+#!/usr/bin/env lua5.1
+
+local d = require 'draw'
+
+local stats = {
+	title = 'Azer',
+	alignment = "lawful neutral",
+	size = "medium",
+	type = "elemental",
+
+	ac = '17 (natural armor, shield)',
+	hp = '39 (6d8 + 12)',
+	speed = '30 ft.',
+
+	str = 17,
+	dex = 12,
+	con = 15,
+	int = 12,
+	wis = 13,
+	cha = 10,
+}
+
+
+print(d.draw(stats))
diff --git a/draw.lua b/draw.lua
new file mode 100644
index 0000000..e75274c
--- /dev/null
+++ b/draw.lua
@@ -0,0 +1,272 @@
+local module = {}
+setmetatable(module, {__index=_G})
+setfenv(1, module)
+
+
+local m = require 'marigold-svg.marigold'
+
+
+local function merge2(a, b)
+	local tbl = {}
+	for k, v in pairs(a) do tbl[k] = v end
+	for k, v in pairs(b) do tbl[k] = v end
+	return tbl
+end
+local function merge_recursive(array, acc)
+	local tbl = array[1]
+	table.remove(array, 1)
+	local acc = merge2(acc, tbl)
+	if #array == 0 then return acc end
+	return merge_recursive(array, acc)
+end
+local function merge(...)
+	return merge_recursive({...}, {})
+end
+
+
+function capitalize(str)
+	return string.gsub(str, "^.", string.upper)
+end
+
+--===== boxes =====--
+
+Box = {}
+function Box.new(_, tbl)
+	local parent = tbl.parent or { x0=0, y0=0 }
+	local width = tbl.width or parent.width
+	local height = tbl.height or parent.width
+	local offset = tbl.offset or { x=0, y=0 }
+	local padding = tbl.padding or { left=0, right=0, top=0, bottom=0 }
+	padding.left = padding.left or 0
+	padding.right = padding.right or 0
+	padding.top = padding.top or 0
+	padding.bottom = padding.bottom or 0
+	local self = {
+		x0 = parent.x0 + offset.x + padding.left,
+		y0 = parent.y0 + offset.y + padding.top,
+		width = width - padding.left - padding.right,
+		height = height - padding.top - padding.bottom,
+	}
+	setmetatable(self, {__index=Box})
+	return self
+end
+setmetatable(Box, {__call=Box.new})
+
+
+function Box.point(self, x, y)
+	return x + self.x0, y + self.y0
+end
+
+function Box.center(self)
+	return self.x0 + (self.width/2), self.y0 + (self.height/2)
+end
+
+local function hsplit(box, acc, count, settings)
+	local index = #acc
+	if index == count then return acc end
+
+	local z = box.width / count
+	table.insert(
+		acc, 
+		Box(merge({
+			parent=box,
+			width=z,
+			offset= { x=index*z, y=0 }
+		}, settings))
+	)
+	return hsplit(box, acc, count, settings)
+end
+function Box.hsplit(self, count, settings)
+	local count = count or 2
+	local settings = settings or {}
+	return hsplit(self, {}, count, settings)
+end
+
+local function vsplit(box, acc, count, settings)
+	local index = #acc
+	if index == count then return acc end
+
+	local z = box.height / count
+	table.insert(
+		acc, 
+		Box(merge({
+			parent=box,
+			height=z,
+			offset= { y=index*z, x=0 }
+		}, settings))
+	)
+	return vsplit(box, acc, count, settings)
+end
+function Box.vsplit(self, count, settings)
+	local count = count or 2
+	local settings = settings or {}
+	return vsplit(self, {}, count, settings)
+end
+
+
+function Box.split_down(self, height)
+	local a = Box{
+		parent=self,
+		height=height,
+	}
+	local b = Box{
+		parent=self,
+		height=self.height - height,
+		offset={x=0, y=height},
+	}
+	return a, b
+end
+
+
+--===== misc =====--
+
+local function stack(...)
+	local array = {...}
+	local l
+	l = function(acc_f, acc_h)
+		if #array == 0 then return acc_f, acc_h end
+		local f, h = array[1][1], array[1][2]
+		table.remove(array, 1)
+		local acc_f = function(y)
+			local tbl = acc_f(y)
+			table.insert(tbl, f(y+acc_h))
+			return tbl
+		end
+		local acc_h = acc_h + h
+		return l(acc_f, acc_h)
+	end
+	local f, h = l(function(y) return {} end, 0)
+	return function(y) return m.g(f(y)) end, h
+end
+
+local function pad(top, bottom, f, h)
+	return function(y) return f(y+top) end, top + h + bottom
+end
+
+
+local function _divider()
+	local size = 3
+	return function(y) return m.rect{
+		x=0, y=y, width=500, height=size,
+		style="fill:darkred;",
+	} end, size
+end
+local divider = function() return pad(0, 10, _divider()) end
+
+
+--===== basic stats =====--
+
+local function title(stats)
+	local size = 40
+	return function(y)
+		return m.text(stats.title, {
+			x=10, y=y+size,
+			style="font-size:"..size.."px;font-variant-caps:small-caps;stroke:black;fill:darkred;font-family:serif",
+		})
+	end, size
+end
+local function subheading(stats)
+	local size = 14
+	return function(y)
+		return m.text(
+			string.format("%s %s, %s", capitalize(stats.size), stats.type, stats.alignment),
+			{
+				x=10, y=y+size, style="font-size:"..size.."px;font-style:italic;"
+			}
+		)
+	end, size
+end
+
+local function header(stats)
+	local f, h = stack(
+		{pad(10, 10, title(stats))},
+		{pad(0, 10, subheading(stats))}
+	)
+	return f, h
+end
+
+local function _statline(name, value)
+	local size = 14
+	return function(y) return m.text(
+		'<tspan style="font-weight:bold">'..name..'</tspan> '..value,
+		{ x=10, y=y+size, style="font-size:"..size.."px;fill:darkred;" }
+	) end, 14
+end
+local statline = function(name, value) return pad(0, 2, _statline(name, value)) end
+
+local function armor_hp(stats)
+	local f, h = pad(0, 10, stack(
+		{statline('Armor Class', stats.ac)},
+		{statline('Hit Points', stats.hp)},
+		{statline('Speed', stats.speed)}
+	))
+	return f, h
+end
+
+local function bonus(raw)
+	return math.floor( (raw-10)/2 )
+end
+local function rawbox(name, raw, x, y)
+	local raw = tonumber(raw)
+	local value = string.format("%d (%s%d)", raw, (raw<0 and '-') or '+', bonus(raw))
+	return m.g{
+		m.text(name, { x=x+10, y=y+15, style="font-weight:bold;font-size:15px;fill:darkred" }),
+		m.text(value, {x=x, y=y+30, style="font-size:15px;fill:darkred;" }),
+	}
+end
+local function raw(stats)
+	return function(y) return m.g{
+		rawbox('STR', stats.str, 10, y),
+		rawbox('DEX', stats.dex, 90, y),
+		rawbox('CON', stats.con, 170, y),
+		rawbox('INT', stats.int, 250, y),
+		rawbox('WIS', stats.wis, 330, y),
+		rawbox('CHA', stats.cha, 410, y),
+	} end, 40
+end
+
+local function base(stats)
+	local f, h = stack(
+		{header(stats)},
+		{divider()},
+		{armor_hp(stats)},
+		{divider()},
+		{raw(stats)},
+		{divider()}
+	)
+	return f, h
+end
+
+
+--===== attributes =====--
+
+local function attribs(stats)
+	return function(y) return m.rect{
+		x=0, y=y, width=500, height=20,
+		style="fill:blue",
+	} end, 20
+end
+
+
+--===== actions =====-- 
+
+local function actions(stats)
+	return function(y) return m.g{} end, 0
+end
+
+
+--===== draw =====--
+
+function draw(stats)
+	local f, h = stack({base(stats)}, {attribs(stats)}, {actions(stats)})
+	return m.render(m.svg{
+		viewBox = string.format("0 0 500 %d", h),
+		width = 500,
+		height = height,
+		style = "font-family:sans-serif;",
+		f(0),
+	})
+end
+
+
+return module