added a readme.

'

@@ -0,0 +1,164 @@
+--[[ AXIAL/CUBE COORDINATE SYSTEM FOR AMULET/LUA]]
+--[[
+
+    all hexes in functions are assumed to be amulet vectors. 
+    in amulet, vector arithmetic works already with [ + - * / ]
+    things like equality and distance are implemented here.
+
+    some algorithms use axial coordinates for hexes: vec2(s, t)
+    others use cube coordinates: vec3(s, t, z) where s + t + z = 0
+    this is for simplicity - many algorithms don't care about the
+    third coordinate, and if they do, the missing coordinate can 
+    be calculated from the other two.
+
+        -- note on orientation:
+    because of the way amulet draws hexagons, it's much easier to assume
+    the user wants to use the flat map. rotation after the fact to
+    achieve other orienations is probably possible, but might have some
+    aliasing issues. TODO work on this. 
+    
+    consequently, I have not implemented stretching. all hexagons are 
+    assumed to be regular. you could implement this yourself by making 
+    layout.size a vec2(sizex, sizey), but you would have to play with 
+    transforms in the amulet library if you wanted to use amulet.
+
+    some of the primary resources used to develop this library:
+    - https://redblobgames.com/grid/hexagons    - simply amazing. 
+    - http://amulet.xyz/doc                     - amulet documentation
+    - TODO that place that had the inner circle/outer circle ratio?? 
+  
+  ]]
+
+-- GENERALLY USEFUL CONSTANTS -------------------------------------------------
+
+
+
+
+
+-- GENERALLY USEFUL FUNCTIONS --------------------------------------------------
+
+function round(n)
+    return n % 1 >= 0.5 and math.ceil(n) or math.floor(n)
+end
+
+function draw_axes(window, node)
+    xaxis = am.line(vec2(-window.width / 2, 0) , vec2(window.width / 2, 0))
+    yaxis = am.line(vec2(0, -window.height / 2), vec2(0, window.height / 2))
+
+    node:append(xaxis)
+    node:append(yaxis)
+end
+
+-- HEX CONSTANTS ---------------------------------------------------------------
+
+    -- all possible vector directions from a given hex by edge
+HEX_DIRECTIONS = {vec2( 1 ,  0), 
+                  vec2( 1 , -1), 
+                  vec2( 0 , -1),
+                  vec2(-1 ,  0), 
+                  vec2(-1 ,  1), 
+                  vec2( 0 ,  1)}
+
+-- HEX UTILITY FUNCTIONS -------------------------------------------------------
+
+function hex_equals(a, b)
+    return a.s == a.t and b.s == b.t
+end
+
+function hex_nequals(a, b)
+    return not hex_equals(a, b)
+end
+
+function hex_length(hex)
+    return ((math.abs(hex.s) + math.abs(hex.t) + math.abs(-hex.s - hex.t)) / 2)
+end
+
+function hex_distance(a, b)
+    return hex_length(a - b)
+end
+
+function hex_direction(direction)
+    return HEX_DIRECTIONS[direction]
+end
+
+function hex_neighbour(hex, direction)
+    return hex + HEX_DIRECTIONS[direction] 
+end
+
+function hex_round(hex)
+    rs = round(hex.s)
+    rt = round(hex.t)
+    rz = round(-hex.s + -hex.t)
+
+    sdelta = math.abs(rs - hex.s)
+    tdelta = math.abs(rt - hex.t)
+    zdelta = math.abs(rz + hex.s + hex.t)
+
+    if sdelta > tdelta and sdelta > zdelta then
+        rs = -rt - rz
+    elseif tdelta > zdelta then
+        rt = -rs - rz
+    else
+        rz = -rs - rt
+    end
+
+    return vec2(rs, rt)
+end
+
+-- COORDINATE CONVERSION FUNCTIONS ---------------------------------------------
+
+    -- forward & inverse matrices used for coordinate conversion
+local M = mat2(3.0/2.0,     0.0,    3.0^0.5/2.0,    3.0^0.5    )
+local W = mat2(2.0/3.0,     0.0,    -1.0/3.0   ,    3.0^0.5/3.0)
+
+    -- hex to screen
+function hex_to_pixel(hex, origin)
+
+    x = (M[1][1] * hex.s + M[1][2] * hex.t) * SIZE
+    y = (M[2][1] * hex.s + M[2][2] * hex.t) * SIZE
+
+    return vec2(x + origin.x, y + origin.y)
+end
+
+    -- screen to hex
+function pixel_to_hex(pix, origin)
+    pix = vec2(pix.x - origin.x) / SIZE, 
+              (pix.y - origin.y) / SIZE
+
+    s = W[1][1] * pix.x + W[1][2] * pix.y
+    t = W[2][1] * pix.x + W[2][2] * pix.y
+
+    return hex_round(vec2(s, t)) 
+end
+
+-- MAP FUNCTIONS ---------------------------------------------------------------
+
+function hexagonal_map(radius, origin) 
+    for s = -radius, radius do
+        t1 = math.max(-radius, -s - radius)
+        t2 = math.min(radius, -s + radius)
+
+        for t = t1, t2 do
+
+            color = vec4(math.random(20, 80) / 100, 
+                         math.random(20, 80) / 100, 
+                         math.random(20, 80) / 100, 
+                         1)
+            
+            map:append(am.circle(hex_to_pixel(vec2(s, t)), 24, color, 6))
+        end
+    end
+end
+
+function rectangular_map(width, height, origin)
+    for s = 0, height do
+        soffset = math.floor(s / 2)
+
+        for t = -soffset, width - soffset do
+
+            center = hex_to_pixel(vec2(s, t))
+        end
+    end
+end
+--]]
+

;

@@ -0,0 +1,67 @@
+----- [[ WARZONE 2 - HEXAGONAL GRID RESOURCE BASED TOWER DEFENSE GAME]] --------
+--[[                                                    author@churchianity.ca
+  ]]
+
+require "hex"
+require "util"
+
+local win = am.window{
+    -- BASE RESOLUTION = 3/4 * WXGA Standard 16:10
+    width = 1280 * 3 / 4, -- 960px
+    height = 800 * 3 / 4, -- 600px
+
+    title = "Warzone 2: Electric Boogaloo"}
+
+local title = am.group()
+local world = am.group()
+local layout = hex_layout(vec2(-368, win.bottom))
+local map = hex_rectangular_map(45, 31)
+
+
+
+function show_axes()
+    xaxis = am.line(vec2(win.left, 0), vec2(win.right, 0))
+    yaxis = am.line(vec2(0, win.top), vec2(0, win.bottom)) 
+    world:append(am.group{xaxis, yaxis}:tag("axes"))
+end
+
+function world_init()
+    world:action(coroutine.create(function()
+        for hex,_ in pairs(map) do
+            world:append(am.circle(hex_to_pixel(hex, layout), 11, rrgb(1), 6))
+            am.wait(am.delay(0.01))
+        end
+    end))
+
+end
+
+function init()
+    titlemap = am.group()
+
+    for hex,_ in pairs(map) do
+        titlemap:append(am.rotate(45):tag("titlemap")
+                   ^ am.scale(3, 2)
+                   ^ am.circle(hex_to_pixel(hex, layout), 11, rrgb(1), 6))
+    end
+
+    local line1 = am.text("WARZONE 2")
+    local line2 = am.text("Electric Boogaloo")
+    local line3 = am.text("by Nick Hayashi")
+    local title = am.group{titlemap,
+        am.translate(0, 150) ^ am.scale(4) ^ line1,
+        am.translate(0, 100) ^ am.scale(3) ^ line2,
+        am.translate(0, 60)  ^ am.scale(1) ^ line3
+    }:action(function()
+        while true do
+            titlemap"titlemap".angle = am.frame_time * 4
+        end
+    end)
+    
+    
+    win.scene = title
+end
+
+----- [[ MAIN ]] ---------------------------------------------------------------
+
+init()
+

README.md

@@ -0,0 +1,61 @@
+----- INTRODUCTION [1.1] ---------------------------------------------------
+--[[                                                     author@churchianity.ca
+
+    this is a library for using hexagonal grids in amulet/lua.
+    it is extremely incomplete. the following list of features is 
+    either implemented shoddily, or not at all. 
+
+    if you want an actual good resource, go to [1.9].
+
+----- COORDINATE SYSTEMS [1.2] ----------------------------------------------
+    
+    * as much coordinate manipulation as possible is done internally.
+      depending on the task, uses either Axial, Cube, or Doubled coordinates.
+    
+    * three different ways of returning and sending coordinates:
+        
+        1) amulet vectors
+        2) lua tables
+        3) individual coordinate numbers
+        
+        so you can use what your graphics library likes best!
+
+----- MAPS & MAP STORAGE [1.3]  -------------------------------------------------
+    
+    some map shapes: parallelogram, rectangular, hexagonal, triangular. (and more)
+    * storage system based on map shape - see chart:
+   
+   ________________________________________________________________________
+   |      SHAPE         :                MAP STORAGE                        |
+   |------------------------------------------------------------------------| 
+   |  parallelogram     :   unordered, hash-like OR ordered, array-like     |
+   |  rectangular       :   unordered, hash-like OR ordered, array-like     |
+   |  hexagonal         :   unordered, hash-like OR ordered, array-like     |
+   |  triangular        :   unordered, hash-like OR ordered, array-like     |
+   |  ring              :   ordered, array-like                             |
+   |  spiral            :   ordered, array-like**                           |   
+   |  arbitrary         :   unordered, hash-like                            |
+   |________________________________________________________________________|
+    ** note that a spiral map is just a hexagonal one with a particular order.
+
+
+----- CONVENTIONS AND TERMINOLOGY [1.8] -----------------------------------------
+
+    because so many different kinds of coordinate pairs, trios
+
+
+----- RESOURCES USED TO DEVELOP THIS LIBRARY, AND FOR WHICH I AM GRATEFUL [1.9] -
+    
+    * https://catlikecoding.com/unity/tutorials/hex-map/
+        -> unity tutorial for hexagon grids with some useful generalized math.
+
+    * https://youtube.com/watch?v=fNk_zzaMoSs&list=PLZHQObOWTQDPD3MizzM2xVFitgF8hE_ab
+        -> amazing series on linear algebra by 3Blue1Brown
+
+    * https://redblobgames.com/grid/hexagons
+        -> now THE resource on hexagonal grids on the internet. 
+    
+    * http://amulet.xyz/doc 
+        -> amulet documentation.
+  ]]
+

hex.lua

@@ -1,16 +1,3 @@
------ [[ AXIAL/CUBE COORDINATE HEXAGON LIBRARY FOR AMULET/LUA]] ----------------
---[[                                                     author@churchianity.ca
-        -- INTRODUCTION
-    this is a hexagonal grid library for amulet/lua.
-    it uses axial coordinates or cube/hex coordinates when necessary.
-    by amulet convention, hexes are either vec2(s, t) or vec3(s, t, z)
-    but nearly always the former.
-
-        -- RESOURCES USED TO DEVELOP THIS LIBRARY, AND FOR WHICH I AM GRATEFUL
-    https://catlikecoding.com/unity/tutorials/hex-map/
-    https://redblobgames.com/grid/hexagons
-    http://amulet.xyz/doc
-  ]]
 
 ----- [[ GENERALLY USEFUL FUNCTIONS ]] -----------------------------------------
 
@@ -22,51 +9,53 @@ end
 ----- [[ HEX CONSTANTS & UTILITY FUNCTIONS ]] ----------------------------------
 
 -- all possible vector directions from a given hex by edge
-local HEX_DIRECTIONS = {vec2( 1 ,  0),
-                        vec2( 1 , -1),
-                        vec2( 0 , -1),
-                        vec2(-1 ,  0),
-                        vec2(-1 ,  1),
-                        vec2( 0 ,  1)}
+local CUBE_DIRECTIONS = {vec2( 1 ,  0),
+                         vec2( 1 , -1),
+                         vec2( 0 , -1),
+                         vec2(-1 ,  0),
+                         vec2(-1 ,  1),
+                         vec2( 0 ,  1)}
 
 -- return hex vector direction via integer index |direction|.
-function hex_direction(direction)
-    return HEX_DIRECTIONS[(6 + (direction % 6)) % 6 + 1]
+function cube_direction(direction)
+    return CUBE_DIRECTIONS[(6 + (direction % 6)) % 6 + 1]
 end
 
 -- return hexagon adjacent to |hex| in integer index |direction|.
-function hex_neighbour(hex, direction)
+function cube_neighbour(hex, direction)
     return hex + HEX_DIRECTIONS[(6 + (direction % 6)) % 6 + 1]
 end
 
--- TODO
-function hex_rotate_left(hex)
+-- TODO rotations are different depending on the coordinate system you use.
+-- implement this for cube/axial, and doubled.
+function cube_rotate_left(hex)
 
 end
 
-function hex_rotate_right(hex)
+function cube_rotate_right(hex)
 
 end
 
--- rounds hexes. without this, pixel_to_hex returns fractional coordinates.
-function hex_round(s, t)
-    local rs = round(s)
-    local rt = round(t)
-    local rz = round(-s - t)
+-- rounds a float coordinate trio |x, y, z| to its nearest integer coordinate trio.
+-- TODO make work with a table {x, y, z} and vec3(x, y, z)
+function cube_round(x, y, z)
+    local rx = round(x)
+    local ry = round(y)
+    local rz = round(z)
 
-    local sdelta = math.abs(rs - s)
-    local tdelta = math.abs(rt - t)
-    local zdelta = math.abs(rz - (-s - t))
+    local xdelta = math.abs(rx - x)
+    local ydelta = math.abs(ry - y)
+    local zdelta = math.abs(rz - z)
 
-    if sdelta > tdelta and sdelta > zdelta then
-        rs = -rt - rz
-    elseif tdelta > zdelta then
-        rt = -rs - rz
+    if xdelta > ydelta and xdelta > zdelta then
+        rx = -ry - rz
+    elseif ydelta > zdelta then
+        rx = -ry - rz
     else
-        rz = -rs - rt
+        rz = -rx - ry
     end
 
-    return vec2(rs, rt)
+    return vec3(rx, ry, rz)
 end
 
 ----- [[ LAYOUT, ORIENTATION & COORDINATE CONVERSION  ]] -----------------------
@@ -81,26 +70,25 @@ local POINTY = {M = mat2(3.0^0.5,  3.0^0.5/2.0,  0.0,   3.0/2.0),
                 W = mat2(3.0^0.5/3.0,  -1.0/3.0,  0.0,  2.0/3.0),
                 start_angle = 0.5}
 
--- TODO encapsulate hex_to_pixel and pixel_to_hex in layout table.
--- stores layout information that does not pertain to map shape 
-function hex_layout(origin, size, orientation)
+-- stores layout: information that does not pertain to map shape 
+function layout(origin, size, orientation)
     return {origin      = origin      or vec2(0),
-            size        = size        or vec2(12),
+            size        = size        or vec2(11),
             orientation = orientation or FLAT}
 end    
 
 -- hex to screen
-function hex_to_pixel(hex, layout)
+function cube_to_pixel(cube, layout)
     local M = layout.orientation.M
 
-    local x = (M[1][1] * hex.s + M[1][2] * hex.t) * layout.size.x
-    local y = (M[2][1] * hex.s + M[2][2] * hex.t) * layout.size.y
+    local x = (M[1][1] * cube.x + M[1][2] * cube.y) * layout.size.x
+    local y = (M[2][1] * cube.x + M[2][2] * cube.y) * layout.size.y
 
     return vec2(x + layout.origin.x, y + layout.origin.y)
 end
 
 -- screen to hex
-function pixel_to_hex(pix, layout)
+function pixel_to_cube(pix, layout)
     local W = layout.orientation.W
 
     local pix = (pix - layout.origin) / layout.size 
@@ -108,28 +96,47 @@ function pixel_to_hex(pix, layout)
     local s = W[1][1] * pix.x + W[1][2] * pix.y
     local t = W[2][1] * pix.x + W[2][2] * pix.y
 
-    return hex_round(s, t) 
+    return cube_round(s, t, -s - t) 
 end
 
--- TODO test
-function hex_corner_offset(layout, corner)
+function hex_corner_offset(corner, layout)
     local angle = 2.0 * math.pi * layout.orientation.start_angle + corner / 6
     return vec2(layout.size.x * math.cos(angle), layout.size.y * math.sin(angle))
 end
 
--- TODO make do stuff
-function hex_corners(layout, hex)
+function hex_corners(hex, layout)
     local corners = {}
 end
 
+function cube_to_offset(cube)
+
+end
+
+function offset_to_cube(off)
+
+end
+
+function cube_to_doubled(cube)
+    return vec2(cube.x, 2 * (-cube.x - cube.y) + cube.x)
+end
+
+function doubled_to_cube(dbl)
+    return vec2(dbl.x, (dbl.y - dbl.x) / 2)
+end
+
 ----- [[ MAP STORAGE & RETRIEVAL ]] --------------------------------------------
 --[[
+    TODO make all functions work regardless of layout. as it stands, they kind
+    of do, just not always nicely.
   ]]
--- TODO make all functions work regardless of layout.
 
 -- returns ordered ring-shaped map of |radius| from |center|.
-function hex_ring_map(center, radius)
+function ring_map(center, radius)
     local map = {}
+    local mt = {__index={center=center, radius=radius}}
+
+    setmetatable(map, mt)
+
     local walk = center + HEX_DIRECTIONS[6] * radius
 
     for i = 1, 6 do
@@ -141,9 +148,15 @@ function hex_ring_map(center, radius)
     return map
 end
 
--- returns ordered hexagonal map of |radius| rings from |center|.
-function hex_spiral_map(center, radius)
+--[[ returns ordered hexagonal map of |radius| rings from |center|.
+     the only difference between hex_spiral_map and hex_hexagonal_map is that
+     hex_spiral_map is ordered, in a spiral path from the |center|.
+  ]]
+function spiral_map(center, radius)
     local map = {center}
+    local mt = {__index={center=center, radius=radius}}
+
+    setmetatable(map, mt)
 
     for i = 1, radius do
         table.append(map, hex_ring_map(center, i))
@@ -152,7 +165,7 @@ function hex_spiral_map(center, radius)
 end
 
 -- returns unordered parallelogram-shaped map of |width| and |height|.
-function hex_parallelogram_map(width, height)
+function parallelogram_map(width, height)
     local map = {}
     local mt = {__index={width=width, height=height}}
 
@@ -167,7 +180,7 @@ function hex_parallelogram_map(width, height)
 end
 
 -- returns unordered triangular map of |size|.
-function hex_triangular_map(size)
+function triangular_map(size)
     local map = {}
     local mt = {__index={size=size}}
 
@@ -182,7 +195,7 @@ function hex_triangular_map(size)
 end
 
 -- returns unordered hexagonal map of |radius|.
-function hex_hexagonal_map(radius)
+function hexagonal_map(radius)
     local map = {}
     local mt = {__index={radius=radius}}
 
@@ -200,7 +213,7 @@ function hex_hexagonal_map(radius)
 end
 
 -- returns unordered rectangular map of |width| and |height|.
-function hex_rectangular_map(width, height)
+function rectangular_map(width, height)
     local map = {}
     local mt = {__index={width=width, height=height}}
 
@@ -214,3 +227,6 @@ function hex_rectangular_map(width, height)
     return map
 end
 
+----- [[ TESTS ]] --------------------------------------------------------------
+
+

main.lua

@@ -2,8 +2,8 @@
 --[[                                                    author@churchianity.ca
   ]]
 
-require "hex"
-require "util"
+require"hex"
+require"util"
 
 ------ [[ GLOBALS ]] -----------------------------------------------------------
 
@@ -12,99 +12,86 @@ local win = am.window{
     width = 1280 * 3 / 4, -- 960px
     height = 800 * 3 / 4, -- 600px
     title = "Warzone 2: Electric Boogaloo",
-    clear_color = vec4(22/255, 22/255, 29/255, 1)
+    resizable = false
     }
 
-local title
-local world
-local layout = hex_layout()
-local map = hex_hexagonal_map(24)
+local layout    = layout(vec2(-268, win.bottom))
+local map       = rectangular_map(45, 31)
+local world     = am.group{}:tag"world"
 
 ----- [[ SPRITES ]] ------------------------------------------------------------
-local titlebutton = [[
+
+-- modified ethan shoonover solarized colortheme
+am.ascii_color_map = {
+    E = vec4( 22/255,  22/255,  29/255, 1), -- eigengrau
+
+    K = vec4(  0,      43/255,  54/255, 1), -- dark navy
+    k = vec4(  7/255,  54/255,  66/255, 1), -- navy
+    L = vec4( 88/255, 110/255, 117/255, 1), -- gray1
+    l = vec4(101/255, 123/255, 131/255, 1), -- gray2
+
+    s = vec4(131/255, 148/255, 150/255, 1), -- gray3
+    S = vec4(147/255, 161/255, 161/255, 1), -- gray4
+    w = vec4(238/255, 232/255, 213/255, 1), -- bone
+    W = vec4(253/255, 246/255, 227/255, 1), -- white
+
+    y = vec4(181/255, 137/255,   0,     1), -- yellow
+    o = vec4(203/255,  75/255,  22/255, 1), -- orange
+    r = vec4(220/255,  50/255,  47/255, 1), -- red
+    m = vec4(211/255,  54/255, 130/255, 1), -- magenta
+    v = vec4(108/255, 113/255, 196/255, 1), -- violet
+    b = vec4( 38/255, 139/255, 210/255, 1), -- blue
+    c = vec4( 42/255, 161/255, 152/255, 1), -- cyan
+    g = vec4(133/255, 153/255,   0,     1)  -- green
+}
+local titlebutton =
+[[
 KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK
 KwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwK
-KwbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbK
-KwbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbK
-KwbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbK
-KwbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbK
-KwbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbK
-KwbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbK
-KwbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbK
-KwbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbK
-KbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbK
+KwkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkK
+KwkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkK
+KwkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkK
+KwkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkK
+KwkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkK
+KwkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkK
+KwkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkK
+KwkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkK
+KkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkK
 KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK
-    ]]
-
-function world_init()
-    world = am.group{}
-    world:action(coroutine.create(function()
-        for hex,_ in pairs(map) do
-            world:append(am.circle(hex_to_pixel(hex, layout), 12, rrgb(1), 6))
-            am.wait(am.delay(0.01))
-        end
-    end))
-    win.scene = world
-end
-
-function init()
-
-    local titlemenu = am.group{
-        am.translate(0, 150)
-        ^ {am.scale(6.5)
-        ^ am.text("WARZONE 2", vec4(0, 0, 0, 1)),
-        am.scale(6.3, 6.7)
-        ^ am.text("WARZONE 2")},
-
-        am.translate(0, 80)
-        ^ am.text("a tower defense game"),
-
-        am.translate(0, 0)
-        ^ {am.scale(3)
-        ^ am.sprite(titlebutton),
-        am.text("NEW GAME")},
+]]
+----- [[ FUNCTIONS ]] ----------------------------------------------------------
 
-        am.translate(0, -40)
-        ^ {am.scale(3)
-        ^ am.sprite(titlebutton),
-        am.text("LOAD GAME")},
-
-        am.translate(0, -80)
-        ^ {am.scale(3)
-        ^ am.sprite(titlebutton),
-        am.text("SETTINGS")},
+function show_axes()
+    local xaxis = am.line(vec2(win.left, 0), vec2(win.right, 0))
+    local yaxis = am.line(vec2(0, win.top), vec2(0, win.bottom))
+    win.scene:append(am.translate(0, 0) ^ am.group{xaxis, yaxis}:tag"axes")
+end
 
-        am.translate(0, -120)
-        ^ {am.scale(3)
-        ^ am.sprite(titlebutton),
-        am.text("QUIT")},
+function show_hex_coords()
+    win.scene:action(function()
+        win.scene:remove("coords")
         
-        am.translate(0, -250)
-        ^ am.text("by nick hayashi")
-        }
+        local mouse = axial_to_doubled(pixel_to_hex(win:mouse_position(), layout))
         
-    local backdrop = am.group()
+        if mouse.x > 0 and mouse.x < 45 and mouse.y < 0 and mouse.y > -63 then
+            local coords = am.group{
+                am.translate(win.left + 30, win.top - 10)
+                ^ am.text(string.format("%d,%d", mouse.x, mouse.y)):tag"coords"}
+                win.scene:append(coords)
+        end 
+    end)
+end
 
+function init()
     for hex,_ in pairs(map) do
-        local center = hex_to_pixel(hex, layout)
-        backdrop:append(am.circle(center, 12, rhue(1), 6))
+        local pix = hex_to_pixel(hex, layout)
+        world:append(am.circle(pix, 11, rhue(1), 6)) 
     end
     
-    title = am.group{
-        am.translate(win.right, win.bottom)
-        ^ am.scale(3.5, 1.5)
-        ^ am.rotate(0)
-        ^ backdrop,
-
-        titlemenu
-        }:action(function()
-            title"rotate".angle = am.frame_time / 36
-        end)
-
-    win.scene = title
+    win.scene = world
 end
 
 ----- [[ MAIN ]] ---------------------------------------------------------------
 
 init()
-
+show_hex_coords()

util.lua

@@ -11,11 +11,3 @@ end
 function rmono()
     return vec4(1, 1, 1, math.random())
 end
-
-
-function show_axes()
-    xaxis = am.line(vec2(win.left, 0), vec2(win.right, 0))
-    yaxis = am.line(vec2(0, win.top), vec2(0, win.bottom)) 
-    world:append(am.group{xaxis, yaxis}:tag("axes"))
-end
-