fix game pause menu not unpausing on escape

lib/gui.lua

@@ -216,6 +216,7 @@ function gui_make_textfield(
                 if self"text".text:len() ~= 0 then
                     self"text".text = self"text".text:sub(1, self"text".text:len() - 1)
                     self"cursor".position2d = self"cursor".position2d - vec2(9 * 2, 0)
+                    self"cursor".hidden = false
                 end
             elseif k == "tab" then
                 -- @TODO
@@ -230,9 +231,13 @@ function gui_make_textfield(
 
         for _,c in pairs(chars) do
             if validate(self"text".text .. c) then
-                if self"text".text:len() <= max then
+                local len = self"text".text:len()
+                if len <= max then
                     self"text".text = self"text".text .. c
                     self"cursor".position2d = self"cursor".position2d + vec2(9 * 2, 0)
+                    if len == max then
+                        self"cursor".hidden = true
+                    end
                 end
             end
         end

lib/random.lua

@@ -1,4 +1,6 @@
 
+RANDOM_CALLS_COUNT = 0
+
 -- https://stackoverflow.com/a/32387452/12464892
 local function bitwise_and(a, b)
     local result = 0
@@ -26,39 +28,46 @@ local function rand()
     X2 = V - X1*D20
     return V/D40
 end
-local SEED_BOUNDS = 2^20 - 1
-math.randomseed = function(seed)
-    RANDOM_CALLS_COUNT = 0
 
+local SEED_BOUNDS = 2^20 - 1
+local function randomseed2(seed)
     -- 0 <= X1 <= 2^20-1, 1 <= X2 <= 2^20-1 (must be odd!)
-    -- ensure the number is odd, and within the bounds of
+    -- ensure the number is odd, and within bounds of the generator
     local seed = bitwise_and(seed, 1)
     local v = math.clamp(math.abs(seed), 0, SEED_BOUNDS)
     X1 = v
     X2 = v + 1
 end
-RANDOM_CALLS_COUNT = 0
+
+local RS = math.randomseed
+math.randomseed = function(seed)
+    RANDOM_CALLS_COUNT = 0
+    RS(seed)
+end
 
 local R = math.random
 local function random(n, m)
     RANDOM_CALLS_COUNT = RANDOM_CALLS_COUNT + 1
 
+    local r
     if n then
         if m then
-            return (rand() + n) * m
+            r = R(n, m)
         else
-            return rand() * n
+            r = R(n)
         end
     else
-      return rand()
+        r = R()
     end
+
+    return r
 end
 
 -- whenever we refer to math.random, actually use the function 'random' above
 math.random = random
 
 function g_octave_noise(x, y, num_octaves, seed)
-    local seed = seed or os.clock()
+    local seed = seed or os.time()
     local noise = 0
 
     for oct = 1, num_octaves do
@@ -71,21 +80,21 @@ function g_octave_noise(x, y, num_octaves, seed)
     return noise
 end
 
----- @TODO test, fix
---function poisson_knuth(lambda)
---    local e = 2.71828
---
---    local L = e^-lambda
---    local k = 0
---    local p = 1
---
---    while p > L do
---        k = k + 1
---        p = p * math.random()
---    end
---
---    return k - 1
---end
+-- @TODO test, fix
+function poisson_knuth(lambda)
+    local e = 2.71828
+
+    local L = e^-lambda
+    local k = 0
+    local p = 1
+
+    while p > L do
+        k = k + 1
+        p = p * math.random()
+    end
+
+    return k - 1
+end
 
 -- seed the random number generator with the current time
 -- os.clock() is better if the program has been running for a little bit.

lib/texture.lua

@@ -30,6 +30,8 @@ TEXTURES = {
     UNPAUSE_HEX             = load_texture("unpausehex.png"),
     MAIN_MENU_HEX           = load_texture("mainmenuhex.png"),
 
+    SEED_COLON_TEXT         = load_texture("seed_colon_text.png"),
+
     CURTAIN                 = load_texture("curtain1.png"),
 
     SOUND_ON1               = load_texture("sound-on.png"),

main.lua

@@ -151,9 +151,9 @@ function main_scene(do_backdrop, do_logo)
     end
 
     local seed_textfield, get_seed_textfield_value = gui_make_textfield{
-        position = vec2(win.left + 150, 50),
-        dimensions = vec2(200, 40),
-        max = 9,
+        position = vec2(win.left + 500, 50),
+        dimensions = vec2(90, 40),
+        max = math.ceil(math.log(HEX_GRID_WIDTH * HEX_GRID_HEIGHT, 10)),
         validate = function(string)
             return not string.match(string, "%D")
         end,
@@ -161,6 +161,9 @@ function main_scene(do_backdrop, do_logo)
     group:append(
         seed_textfield
     )
+    group:append(
+        am.translate(win.left + 220, 50) ^ pack_texture_into_sprite(TEXTURES.SEED_COLON_TEXT)
+    )
 
     local main_scene_options = {
         false,
@@ -213,7 +216,7 @@ function main_scene(do_backdrop, do_logo)
     return group
 end
 
-function make_scene_menu(scene_options, tag)
+function make_scene_menu(scene_options, tag, do_curtain)
     -- calculate the dimensions of the whole grid
     local spacing = 150
     local grid_width = 6
@@ -227,6 +230,11 @@ function make_scene_menu(scene_options, tag)
     -- generate a map of hexagons (the menu is made up of two rows of hexes) and populate their locations with buttons from the provided options
     local map = hex_rectangular_map(grid_width, grid_height, HEX_ORIENTATION.POINTY)
     local group = am.group():tag(tag or "menu")
+    if do_curtain then
+        group:append(pack_texture_into_sprite(TEXTURES.CURTAIN, win.width, win.height))
+    end
+
+    local menu = am.group()
     local option_index = 1
     for i,_ in pairs(map) do
         for j,_ in pairs(map[i]) do
@@ -250,6 +258,14 @@ function make_scene_menu(scene_options, tag)
                 local hex_ = pixel_to_hex(mouse - pixel_offset, vec2(spacing), HEX_ORIENTATION.POINTY)
 
                 if tile.option then
+                    if tile.option.keys and tile.option.action then
+
+                        for _,key in pairs(win:keys_pressed()) do
+                            if table.find(tile.option.keys, function(_key) return _key == key end) then
+                                tile.option.action()
+                            end
+                        end
+                    end
                     if hex == hex_ then
                         if not selected then
                             play_sfx(SOUNDS.SELECT1)
@@ -267,12 +283,13 @@ function make_scene_menu(scene_options, tag)
                 end
             end)
 
-            group:append(node)
+            menu:append(node)
             option_index = option_index + 1
         end
     end
+    group:append(am.translate(pixel_offset) ^ menu)
 
-    return am.translate(pixel_offset) ^ group
+    return group
 end
 
 function switch_context(scene, action)

src/game.lua

@@ -42,7 +42,10 @@ local game_scene_menu_options = {
         action = function()
             win.scene("context").paused = false
             win.scene:remove("menu")
-        end
+        end,
+        keys = {
+            "escape"
+        }
     },
     {
         texture = TEXTURES.SETTINGS_HEX,
@@ -149,12 +152,11 @@ end
 local function game_pause()
     win.scene("context").paused = true
 
-    win.scene:append(make_scene_menu(game_scene_menu_options))
+    win.scene:append(make_scene_menu(game_scene_menu_options, nil, true))
 end
 
 local function game_deserialize(json_string)
     local new_game_state = am.parse_json(json_string)
-    log(new_game_state.RANDOM_CALLS_COUNT)
 
     if new_game_state.version ~= version then
         gui_alert("loading incompatible old save data.\nstarting a fresh game instead.", nil, 10)
@@ -167,10 +169,11 @@ local function game_deserialize(json_string)
     -- in order to restore the state of the random number generator on game deserialize, we first
     -- seed it with the same seed used in the original state. then, we discard N calls, where N
     -- is the number of calls we counted since seeding the generator last time.
-    for i = 0, new_game_state.RANDOM_CALLS_COUNT do
+    --
+    -- this means it's important that deserializing the rest of the game state doesn't cause any math.random() calls.
+    for i = 1, new_game_state.RANDOM_CALLS_COUNT do
         math.random()
     end
-    log(RANDOM_CALLS_COUNT)
     new_game_state.world = make_hex_grid_scene(new_game_state.map, true)
     new_game_state.seed = nil
 

src/hexyz.lua

@@ -384,7 +384,7 @@ end
 
 -- Returns Unordered Hexagonal Map of |radius| with Simplex Noise
 function hex_hexagonal_map(radius, seed)
-    local seed = seed or os.time()
+    local seed = seed or math.floor(math.random() * (2 * math.pi * radius^2))
 
     local size = 0
     local map = {}
@@ -435,7 +435,7 @@ end
 -- Returns Unordered Rectangular Map of |width| and |height| with Simplex Noise
 function hex_rectangular_map(width, height, orientation, seed, do_generate_noise)
     local orientation = orientation or HEX_DEFAULT_ORIENTATION
-    local seed = seed or os.time()
+    local seed = seed or math.floor(math.random() * (width * height))
 
     local map = {}
     if orientation == HEX_ORIENTATION.FLAT then

src/map-editor.lua

@@ -81,7 +81,7 @@ function map_editor_action()
 
     if win:key_pressed"escape" then
         win.scene("map_editor").paused = true
-        win.scene:append(make_scene_menu(map_editor_scene_menu_options))
+        win.scene:append(make_scene_menu(map_editor_scene_menu_options, nil, true))
     end
 
     if win:mouse_down"left" then