Add new neovim welcome screen and change probability definitions

nvim/.config/nvim/lua/plugins/alpha.lua

@@ -4,7 +4,7 @@
 local function clamp(x, min, max) return math.max(math.min(x, max), min) end
 
 local function get_random_image()
-    images = {
+    local images = {
         {
             [[██╗      █████╗  ██████╗██╗  ██╗███████╗]],
             [[██║     ██╔══██╗██╔════╝██║  ██║██╔════╝]],
@@ -29,21 +29,53 @@ local function get_random_image()
             [[██║╚██╗██║██╔══╝  ██║   ██║╚██╗ ██╔╝██║██║╚██╔╝██║]],
             [[██║ ╚████║███████╗╚██████╔╝ ╚████╔╝ ██║██║ ╚═╝ ██║]],
             [[╚═╝  ╚═══╝╚══════╝ ╚═════╝   ╚═══╝  ╚═╝╚═╝     ╚═╝]]
+        },
+        {
+            [[                  ▄                  ]],
+            [[                 ▟█▙                 ]],
+            [[                ▟███▙                ]],
+            [[               ▟█████▙               ]],
+            [[              ▟███████▙              ]],
+            [[             ▂▔▀▜██████▙             ]],
+            [[            ▟██▅▂▝▜█████▙            ]],
+            [[           ▟█████████████▙           ]],
+            [[          ▟███████████████▙          ]],
+            [[         ▟█████████████████▙         ]],
+            [[        ▟███████████████████▙        ]],
+            [[       ▟█████████▛▀▀▜████████▙       ]],
+            [[      ▟████████▛      ▜███████▙      ]],
+            [[     ▟█████████        ████████▙     ]],
+            [[    ▟██████████        █████▆▅▄▃▂    ]],
+            [[   ▟██████████▛        ▜█████████▙   ]],
+            [[  ▟██████▀▀▀              ▀▀██████▙  ]],
+            [[ ▟███▀▘                       ▝▀███▙ ]],
+            [[▟▛▀                               ▀▜▙]],
+            [[                 btw                 ]]
         }
     }
 
-    local i = 3
+    local pmf = {0.25, 0.25, 0.25, 0.25}
+    local cdf = {}
 
-    math.randomseed(os.time())
+    cdf[1] = 0
-    if math.fmod(math.random(100), 5) == 0 then
+    for j = 2, #pmf+1 do
-        if math.random(0, 1) == 0 then
+        cdf[j] = cdf[j - 1] + pmf[j - 1]
-            i = 1
-        else
-            i = 2
-        end
     end
 
-    return images[i]
+    if math.abs(cdf[#cdf] - 1) > 0.01 then
+        error("Probabilities do not add up to 1")
+    elseif #images ~= #pmf then
+        error("Number of images and probabilities do not match")
+    end
+
+    math.randomseed(os.time())
+    local r = math.random(100)
+
+    for j = 2, #cdf do
+        if r <= cdf[j] * 100 then
+            return images[j-1]
+        end
+    end
 end
 
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