LÖVE backend + build target (compat/luajit.lua shims, Roblox build unchanged), examples/example_love, examples/example_shared (same app on Roblox and LÖVE), LuaJIT checksum tests

2026-10-08 19:31:22 -05:00
parent 81c5ad9e43
commit 66fa061089
23 changed files with 56780 additions and 17 deletions
@@ -0,0 +1,53 @@
+-- One UI that runs unchanged on Roblox and LÖVE: only the Dear ImGui API is used, and the code is plain Lua 5.1
+-- (no Luau-only syntax), so both Luau and LuaJIT run it. The platform launchers are roblox.client.luau and main.lua.
+--   local App = require(app)(G)   -- G = the table returned by the ImGui bundle
+--   every frame, between ImGui.NewFrame() and ImGui.Render():  App.Frame()
+return function(G)
+    local ImGui, ImVec2, ImVec4 = G.ImGui, G.ImVec2, G.ImVec4
+    local App = {
+        Platform = "?",                                  -- set by the launcher ("Roblox" / "LÖVE")
+        ClearColor = ImVec4(0.45, 0.55, 0.60, 1.00),     -- launchers may use it as the background colour
+    }
+    local show_demo, show_table = false, true
+    local counter, speed = 0, 1.0
+    local name = ImGui.NewTextBuffer("Player", 64)
+    local samples, t = {}, 0.0
+    local items = { { "Sword", 1, 120 }, { "Potion", 5, 15 }, { "Arrow", 64, 1 }, { "Shield", 1, 80 } }
+
+    function App.Frame()
+        local io = ImGui.GetIO()
+        t = t + io.DeltaTime * speed
+        for i = 1, 90 do samples[i] = math.sin(i / 90 * math.pi * 4 + t * 3) end
+
+        ImGui.SetNextWindowPos(ImVec2(20, 20), G.ImGuiCond.FirstUseEver)
+        ImGui.SetNextWindowSize(ImVec2(420, 360), G.ImGuiCond.FirstUseEver)
+        ImGui.Begin("Shared Example")
+        ImGui.Text("Running on %s (%.1f FPS)", App.Platform, io.Framerate)
+        ImGui.Separator()
+        ImGui.InputText("name", name, 64)
+        if ImGui.Button("Click me") then counter = counter + 1 end
+        ImGui.SameLine(); ImGui.Text("%s clicked %d times", ImGui.TextBufferToString(name), counter)
+        speed = ImGui.SliderFloat("speed", speed, 0.0, 4.0)
+        ImGui.ColorEdit3("background", App.ClearColor)
+        ImGui.PlotLines("wave", samples, nil, #samples, 0, nil, -1.0, 1.0, ImVec2(0, 60))
+        local _
+        _, show_table = ImGui.Checkbox("Inventory table", show_table)
+        ImGui.SameLine(); _, show_demo = ImGui.Checkbox("Demo window", show_demo)
+        if show_table and ImGui.BeginTable("inv", 3, bit32.bor(G.ImGuiTableFlags.Borders, G.ImGuiTableFlags.RowBg, G.ImGuiTableFlags.Sortable)) then
+            ImGui.TableSetupColumn("Item"); ImGui.TableSetupColumn("Count"); ImGui.TableSetupColumn("Value")
+            ImGui.TableHeadersRow()
+            for _, it in ipairs(items) do
+                ImGui.TableNextRow()
+                ImGui.TableNextColumn(); ImGui.Text(it[1])
+                ImGui.TableNextColumn(); ImGui.Text("%d", it[2])
+                ImGui.TableNextColumn(); ImGui.Text("%d", it[3])
+            end
+            ImGui.EndTable()
+        end
+        ImGui.End()
+
+        if show_demo and ImGui.ShowDemoWindow then show_demo = ImGui.ShowDemoWindow(show_demo) end
+    end
+
+    return App
+end