initial commit

tools/save-editor/Kit.lua

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+-- Minimal immediate-mode, mouse-based UI kit for the save editor.
+-- Call Kit.beginFrame(mx, my, clicked) once per love.draw() before using
+-- any widget below; widgets read the frame's mouse state to decide hover
+-- / click.
+
+local Kit = {}
+Kit.mouseX, Kit.mouseY = 0, 0
+Kit.mouseClicked = false -- left button pressed this frame
+Kit.hotField = nil
+Kit.font = nil
+
+function Kit.beginFrame(mx, my, clicked)
+  Kit.mouseX, Kit.mouseY = mx, my
+  Kit.mouseClicked = clicked
+end
+
+local function hit(x, y, w, h)
+  return Kit.mouseX >= x and Kit.mouseX <= x + w
+     and Kit.mouseY >= y and Kit.mouseY <= y + h
+end
+
+function Kit.label(x, y, text)
+  love.graphics.setColor(0.9, 0.9, 0.9)
+  love.graphics.print(text, x, y)
+end
+
+function Kit.button(x, y, w, h, label)
+  local hover = hit(x, y, w, h)
+  if hover then love.graphics.setColor(0.25, 0.35, 0.5)
+  else love.graphics.setColor(0.15, 0.15, 0.18) end
+  love.graphics.rectangle("fill", x, y, w, h, 4, 4)
+  love.graphics.setColor(1, 1, 1)
+  love.graphics.print(label, x + 8, y + h / 2 - 6)
+  return hover and Kit.mouseClicked
+end
+
+function Kit.checkbox(x, y, checked, label)
+  local on = Kit.button(x, y, 22, 22, checked and "X" or "")
+  Kit.label(x + 28, y + 4, label)
+  if on then return not checked, true end
+  return checked, false
+end
+
+function Kit.list(x, y, w, h, items, selected, rowH)
+  rowH = rowH or 22
+  love.graphics.setColor(0.1, 0.1, 0.12)
+  love.graphics.rectangle("fill", x, y, w, h)
+  local clickedIndex = nil
+  local maxRows = math.floor(h / rowH)
+  for i = 1, math.min(#items, maxRows) do
+    local ry = y + (i - 1) * rowH
+    if i == selected then
+      love.graphics.setColor(0.2, 0.4, 0.7)
+      love.graphics.rectangle("fill", x, ry, w, rowH)
+    end
+    love.graphics.setColor(1, 1, 1)
+    love.graphics.print(items[i], x + 6, ry + 4)
+    if Kit.mouseClicked and hit(x, ry, w, rowH) then
+      clickedIndex = i
+    end
+  end
+  return clickedIndex
+end
+
+-- Tabs: returns new tab id if clicked
+function Kit.tabs(x, y, tabs, current)
+  local tx = x
+  for _, t in ipairs(tabs) do
+    local label = t.label
+    local w = 8 * #label + 24
+    local active = current == t.id
+    love.graphics.setColor(active and 0.3 or 0.15, active and 0.45 or 0.15, active and 0.7 or 0.18)
+    love.graphics.rectangle("fill", tx, y, w, 28, 4, 4)
+    love.graphics.setColor(1, 1, 1)
+    love.graphics.print(label, tx + 12, y + 7)
+    if Kit.mouseClicked and hit(tx, y, w, 28) then
+      return t.id
+    end
+    tx = tx + w + 4
+  end
+  return nil
+end
+
+return Kit