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v0.0.0.0.0.1

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churchianity 6 years ago
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91fb065e65
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12048fa702
2 changed files with 105 additions and 79 deletions
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  1. 76
      hex.lua
  2. 108
      main.lua

76
hex.lua
View File

@ -17,8 +17,9 @@
+support for arbitrary maps with gaps via hashmaps-like storage
+support for simple irregular hexagons (horizontal and vertical stretching).
classes are used sparsely. maps implement a few constructors, for storing
your maps elsewhere.
classes are used sparsely. maps implement a few constructors for storing
your maps elsewhere, and should be the only field that is necessarily
visible outside the library.
-- RESOURCES USED TO DEVELOP THIS LIBRARY
https://redblobgames.com/grid/hexagons - simply amazing.
@ -29,12 +30,12 @@
----- [[ GENERALLY USEFUL FUNCTIONS ]] -----------------------------------------
-- just incase you don't already have a rounding function.
-- rounds numbers. would've been cool to have math.round in lua.
local function round(n)
return n % 1 >= 0.5 and math.ceil(n) or math.floor(n)
end
---- [[ HEX CONSTANTS ]] -------------------------------------------------------
----- [[ HEX CONSTANTS ]] ------------------------------------------------------
-- all possible vector directions from a given hex by edge
local HEX_DIRECTIONS = {vec2( 1 , 0),
@ -44,7 +45,7 @@ local HEX_DIRECTIONS = {vec2( 1 , 0),
vec2(-1 , 1),
vec2( 0 , 1)}
-- HEX UTILITY FUNCTIONS -------------------------------------------------------
----- [[ HEX UTILITY FUNCTIONS ]] ----------------------------------------------
function hex_equals(a, b)
return a.s == b.s and a.t == b.t
@ -59,13 +60,13 @@ function hex_distance(a, b)
end
function hex_round(s, t)
rs = round(s)
rt = round(t)
rz = round(-s - t)
local rs = round(s)
local rt = round(t)
local rz = round(-s - t)
sdelta = math.abs(rs - s)
tdelta = math.abs(rt - t)
zdelta = math.abs(rz - (-s - t))
local sdelta = math.abs(rs - s)
local tdelta = math.abs(rt - t)
local zdelta = math.abs(rz - (-s - t))
if sdelta > tdelta and sdelta > zdelta then
rs = -rt - rz
@ -88,31 +89,31 @@ local FLAT = {3.0/2.0, 0.0, 3.0^0.5/2.0, 3.0^0.5,
local POINTY = {3.0^0.5, 3.0^0.5/2.0, 0.0, 3.0/2.0,
3.0^0.5/3.0, -1.0/3.0, 0.0, 2.0/3.0}
-- layout.
-- stores layout information that does not pertain to map shape
function layout_init(origin, size, orientation)
return {origin = origin or vec2(0),
size = size or vec2(11),
return {origin = origin or vec2(0),
size = size or vec2(11),
orientation = orientation or FLAT}
end
-- hex to screen
function hex_to_pixel(hex, layout)
M = layout.orientation
local M = layout.orientation
x = (M[1] * hex.s + M[2] * hex.t) * layout.size.x
y = (M[3] * hex.s + M[4] * hex.t) * layout.size.y
local x = (M[1] * hex.s + M[2] * hex.t) * layout.size.x
local y = (M[3] * hex.s + M[4] * hex.t) * layout.size.y
return vec2(x + layout.origin.x, y + layout.origin.y)
end
-- screen to hex
function pixel_to_hex(pix, layout)
M = layout.orientation
local M = layout.orientation
pix = (pix - layout.origin) / layout.size
local pix = (pix - layout.origin) / layout.size
s = M[5] * pix.x + M[6] * pix.y
t = M[7] * pix.x + M[8] * pix.y
local s = M[5] * pix.x + M[6] * pix.y
local t = M[7] * pix.x + M[8] * pix.y
return hex_round(s, t)
end
@ -128,13 +129,22 @@ end
rectmap_init - rectangular map
calling .retrieve(pix) on your map will get the hexagon at that pixel.
calling .store(hex) on your map will store the hex as pixel coords.
calling .store(hex) on your map will store that hex as pixel coords.
maps store coordinates like this:
map[hex] = hex_to_pixel(hex)
this means you should be able to get all the information you need about
various coordinates completely within the map 'class', without calling
any internal functions. indeed, *map_init, map.retrieve, and map.store
is all you need.
]]
-- returns parallelogram-shaped map.
function grammap_init(layout, width, height)
map = {}
mt = {__index={layout=layout,
local map = {}
local mt = {__index={layout=layout,
-- get hex in map from pixel coordinate
retrieve=function(pix)
@ -159,8 +169,8 @@ end
-- returns triangular map.
function trimap_init(layout, size)
map = {}
mt = {__index={layout=layout,
local map = {}
local mt = {__index={layout=layout,
-- get hex in map from pixel coordinate
retrieve=function(pix)
@ -173,6 +183,8 @@ function trimap_init(layout, size)
end
}}
setmetatable(map, mt)
for s = 0, size do
for t = size - s, size do
map.store(vec2(s, t))
@ -183,8 +195,8 @@ end
-- returns hexagonal map. length of map is radius * 2 + 1
function hexmap_init(layout, radius)
map = {}
mt = {__index={layout=layout,
local map = {}
local mt = {__index={layout=layout,
-- get hex in map from pixel coordinate
retrieve=function(pix)
@ -200,8 +212,8 @@ function hexmap_init(layout, radius)
setmetatable(map, mt)
for s = -radius, radius do
t1 = math.max(-radius, -s - radius)
t2 = math.min(radius, -s + radius)
local t1 = math.max(-radius, -s - radius)
local t2 = math.min(radius, -s + radius)
for t = t1, t2 do
table.insert(map, hex_to_pixel(vec2(s, t), layout))
@ -212,8 +224,8 @@ end
-- returns rectangular map.
function rectmap_init(layout, width, height)
map = {}
mt = {__index={layout=layout,
local map = {}
local mt = {__index={layout=layout,
-- get hex in map from pixel coordinate
retrieve=function(pix)

108
main.lua
View File

@ -8,15 +8,15 @@ require "hex"
----- [[ DUMMY FUNCTIONS ]] ----------------------------------------------------
function show_hex_coords()
gui_scene:action(function()
gui_scene:remove("text")
grid:action(function()
grid:remove("text")
mouse_position = vec2(win:mouse_position().x, win:mouse_position().y)
if mouse_position.x < 268 then
hex = map.retrieve(mouse_position)
gui_scene:append(am.translate(win.left + 30, win.top - 10)
^ am.text(string.format("%d,%d", hex.s, hex.t)))
grid:append(am.translate(win.left + 30, win.top - 10)
^ am.text(string.format("%d,%d", hex.s, hex.t)))
end
end)
end
@ -28,6 +28,23 @@ function rcolor()
1)
end
SPRITES = {"BoulderHills1.png", "BoulderHills2.png", "BoulderHills2.png",
"Brambles1.png", "Brambles2.png", "Brambles3.png", "Brambles4.png",
"BrownHills1.png", "BrownHills2.png", "BrownHills3.png",
"Grass1.png", "Grass2.png", "Grass3.png", "Grass4.png", "Grass5.png", "Hills1.png", "Hills2.png", "Hills3.png", "Hills4.png", "Hills5.png",
"HillsGreen1.png", "HillsGreen2.png", "HillsGreen3.png",
"LightGrass1.png", "LightGrass2.png", "LightGrass3.png",
"LowHills1.png", "LowHills2.png", "LowHills3.png", "LowHills4.png",
"Mountains1.png", "Mountains2.png", "Mountains3.png",
"Mud1.png", "Mud2.png", "Mud3.png", "Mud4.png", "Mud5.png",
"Orchards1.png", "Orchards2.png", "Orchards3.png", "Orchards4.png",
"PineForest1.png", "PineForest2.png", "PineForest3.png",
"Woods1.png", "Woods2.png", "Woods3.png", "Woods4.png"}
function rsprite()
return string.format("res/%s", SPRITES[math.random(#SPRITES)])
end
----- [[ BLAH BLAH LBAH ]] -----------------------------------------------
win = am.window {
@ -39,55 +56,52 @@ win = am.window {
----- [[ MAP RENDERING ]] ------------------------------------------------
function map_init(layout)
map = rectmap_init(layout, 45, 31)
map_scene:action(function()
for _,hex in pairs(map) do
if hex_equals(_, vec2(23, 16)) then
print("yay")
else
map_scene:append(am.circle(hex, layout.size.x, rcolor(), 6))
end
function grid_init()
grid = am.group()
map = rectmap_init(layout_init(vec2(win.left, win.bottom)), 45, 31)
grid:action(function()
for hex,pix in pairs(map) do
grid:append(am.circle(pix, map.layout.size.x, rcolor(), 6))
end
map_scene:append(am.rect(268, win.top, win.right, win.bottom, vec4(0.4, 0.6, 0.8, 1)))
local coalburner = [[
.........
..kkkkk..
.k.....k.
k..wo...k
k..ooo..k
k...o...k
.k.....k.
..kkkkk..
.........
]]
map_scene:append(am.translate(350, 200) ^ am.scale(10) ^ am.sprite(coalburner))
map_scene:append(am.particles2d({source_pos=vec2(400, win.top),
source_pos_var=vec2(0, 600),
angle=math.pi/4,
start_color=vec4(0.9),
gravity=vec2(100),
start_color_var=rcolor(),
start_size=5}))
--print(win.right - 268)
return true
end)
end)
grid:append(am.translate(350, 200)
^ am.scale(2)
^ am.sprite("2.png"))
show_hex_coords()
return grid
end
----- [[ MAIN ]] -----------------------------------------------------------
function toolbar_init()
local toolbar = am.group()
local toolbar_bg = vec4(0.4, 0.6, 0.8, 1)
toolbar:append(am.rect(268, win.top, win.right, win.bottom, toolbar_bg))
toolbar:append(am.particles2d({source_pos=vec2(win.width/2-268, win.top),
source_pos_var=vec2(0, 600),
angle=math.pi/4,
start_color=vec4(0.9),
gravity=vec2(100),
start_color_var=rcolor(),
start_size=3}))
return toolbar
end
map = {}
function game_init()
return am.group{grid_init(), toolbar_init()}
end
----- [[ MAIN ]] -----------------------------------------------------------
gui_scene = am.group()
map_scene = am.group(); map_init(layout_init(vec2(win.left, win.bottom)))
local map = {}
win.scene = am.group{map_scene, gui_scene}
win.scene = game_init()
show_hex_coords(map)
show_hex_coords()
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