Reorganize like upstream: library at root (docking/dragdrop/debug tools merged into imgui.lua, tabs into imgui_widgets.lua), single imgui_demo.lua, backends/, fonts/, examples/, docs/; --no-demo build
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4DBug
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-- LocalScript. Build the library first: `python3 tools/bundle.py` -> build/ImGui.luau (see default.project.json)
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local ReplicatedStorage = game:GetService("ReplicatedStorage")
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local RunService = game:GetService("RunService")
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local G = require(ReplicatedStorage:WaitForChild("ImGui"))
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local ImGui, ImVec4, ImGuiConfigFlags, ImGui_ImplRoblox = G.ImGui, G.ImVec4, G.ImGuiConfigFlags, G.ImGui_ImplRoblox
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local main_scale = 1.0
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-- Roblox UI points are multiplied by the OS display scale (e.g. 150%), which makes imgui look large.
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-- Set this to your display scale to render imgui at physical-pixel resolution (same size as a desktop imgui app).
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local render_scale = 1.0
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local clear_color = ImVec4(0.45, 0.55, 0.60, 1.00)
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local show_demo_window = true
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local show_another_window = false
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local f = 0.0
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local counter = 0
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ImGui.CreateContext()
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local io = ImGui.GetIO()
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io.ConfigFlags = bit32.bor(io.ConfigFlags, ImGuiConfigFlags.NavEnableKeyboard, ImGuiConfigFlags.DockingEnable)
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-- Catppuccin Mocha, Mauve accent (https://catppuccin.com/palette)
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local function StyleColorsCatppuccinMocha(style)
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local function hex(h, a)
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return ImVec4(bit32.extract(h, 16, 8) / 255, bit32.extract(h, 8, 8) / 255, bit32.extract(h, 0, 8) / 255, a or 1.0)
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end
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local crust, mantle, base = 0x11111b, 0x181825, 0x1e1e2e
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local surface0, surface1, surface2 = 0x313244, 0x45475a, 0x585b70
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local overlay0, overlay2, text = 0x6c7086, 0x9399b2, 0xcdd6f4
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local mauve, lavender = 0xcba6f7, 0xb4befe
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local C, c = G.ImGuiCol, style.Colors
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local function set(idx, h, a) c[idx] = hex(h, a) end
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set(C.Text, text); set(C.TextDisabled, overlay0)
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set(C.WindowBg, base); set(C.ChildBg, base, 0.0)
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set(C.PopupBg, mantle, 0.98); set(C.Border, surface1); set(C.BorderShadow, crust, 0.0)
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set(C.FrameBg, surface0); set(C.FrameBgHovered, surface1); set(C.FrameBgActive, surface2)
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set(C.TitleBg, mantle); set(C.TitleBgActive, crust); set(C.TitleBgCollapsed, mantle, 0.75)
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set(C.MenuBarBg, mantle)
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set(C.ScrollbarBg, mantle); set(C.ScrollbarGrab, surface1)
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set(C.ScrollbarGrabHovered, surface2); set(C.ScrollbarGrabActive, overlay0)
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set(C.CheckMark, mauve); set(C.SliderGrab, mauve, 0.8); set(C.SliderGrabActive, mauve)
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set(C.Button, surface0); set(C.ButtonHovered, surface1); set(C.ButtonActive, mauve, 0.6)
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set(C.Header, surface0); set(C.HeaderHovered, surface1); set(C.HeaderActive, mauve, 0.5)
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set(C.Separator, surface1); set(C.SeparatorHovered, mauve, 0.7); set(C.SeparatorActive, mauve)
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set(C.ResizeGrip, mauve, 0.2); set(C.ResizeGripHovered, mauve, 0.6); set(C.ResizeGripActive, mauve, 0.9)
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set(C.InputTextCursor, text)
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set(C.TabHovered, surface2); set(C.Tab, surface0)
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set(C.TabSelected, surface1); set(C.TabSelectedOverline, mauve)
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set(C.TabDimmed, mantle); set(C.TabDimmedSelected, surface0); set(C.TabDimmedSelectedOverline, overlay0)
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set(C.DockingPreview, mauve, 0.7); set(C.DockingEmptyBg, crust)
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set(C.PlotLines, overlay2); set(C.PlotLinesHovered, mauve)
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set(C.PlotHistogram, mauve, 0.8); set(C.PlotHistogramHovered, lavender)
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set(C.TableHeaderBg, surface0); set(C.TableBorderStrong, surface1); set(C.TableBorderLight, surface0)
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set(C.TableRowBg, base, 0.0); set(C.TableRowBgAlt, surface0, 0.3)
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set(C.TextLink, mauve); set(C.TextSelectedBg, mauve, 0.35)
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set(C.TreeLines, surface2)
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set(C.DragDropTarget, mauve, 0.9)
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set(C.NavCursor, lavender); set(C.NavWindowingHighlight, lavender, 0.7)
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set(C.NavWindowingDimBg, crust, 0.5); set(C.ModalWindowDimBg, crust, 0.6)
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end
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local style = ImGui.GetStyle()
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StyleColorsCatppuccinMocha(style)
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style:ScaleAllSizes(main_scale)
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style.FontScaleDpi = main_scale
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-- Fonts: ProggyClean stays the default (added first); the rest show up in Style Editor > Fonts
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io.Fonts:AddFontDefault()
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for _, name in ipairs({ "Cousine-Regular", "DroidSans", "Karla-Regular", "ProggyTiny", "Roboto-Medium" }) do
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io.Fonts:AddFontFromFileTTF("fonts/" .. name .. ".ttf", 13.0)
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end
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ImGui_ImplRoblox.Init(nil, render_scale)
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ImGui_ImplRoblox.SetRenderRate(60) -- tile redraws per second; imgui logic + your code still run every frame
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-- ImGui_ImplRoblox.SetBusyRenderRate(30) -- optional: lower redraw rate while scrolling/resizing/moving windows
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ImGui_ImplRoblox.SetProfiling(true) -- MicroProfiler (Ctrl+F6) labels; turn off when not profiling
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local function P(name) if ImGui_ImplRoblox.IsProfiling() then debug.profilebegin(name) end end
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local function PE() if ImGui_ImplRoblox.IsProfiling() then debug.profileend() end end
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RunService.Stepped:Connect(function()
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P("ImGui frame")
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ImGui_ImplRoblox.NewFrame()
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P("ImGui.NewFrame"); ImGui.NewFrame(); PE()
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P("ImGui UI")
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-- Dockspace covering the whole screen; the centre stays transparent so the game shows through
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ImGui.DockSpaceOverViewport(0, nil, G.ImGuiDockNodeFlags.PassthruCentralNode)
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if show_demo_window then
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ImGui.ShowDemoWindow()
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end
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do
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ImGui.Begin("Hello, world!")
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ImGui.Text("This is some useful text.")
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local _
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_, show_demo_window = ImGui.Checkbox("Demo Window", show_demo_window)
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_, show_another_window = ImGui.Checkbox("Another Window", show_another_window)
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f = ImGui.SliderFloat("float", f, 0.0, 1.0)
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ImGui.ColorEdit3("clear color", clear_color)
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if ImGui.Button("Button") then
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counter = counter + 1
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end
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ImGui.SameLine()
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ImGui.Text("counter = %d", counter)
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ImGui.Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0 / io.Framerate, io.Framerate)
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ImGui.End()
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end
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if show_another_window then
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show_another_window = ImGui.Begin("Another Window", show_another_window)
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ImGui.Text("Hello from another window!")
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if ImGui.Button("Close Me") then
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show_another_window = false
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end
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ImGui.End()
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end
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PE()
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P("ImGui.Render"); ImGui.EndFrame(); ImGui.Render(); PE()
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ImGui_ImplRoblox.RenderDrawData(ImGui.GetDrawData())
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PE()
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end)
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