Added convenience make targets and refined documentation in the HelloPlayDate example target.

Examples/HelloPlaydate/Makefile

@@ -28,4 +28,23 @@ OBJS += build/Modules/playdate_device.o
 build/game_simulator.o: Sources/HelloPlaydate/*.swift build/Modules/playdate_simulator.o
 	$(SWIFT_EXEC) $(SWIFT_FLAGS) $(SWIFT_FLAGS_SIMULATOR) -c $(filter %.swift,$^) -o $@
 $(OBJDIR)/pdex.${DYLIB_EXT}: build/game_simulator.o
-SIMCOMPILER += build/game_simulator.o
+SIMCOMPILER += build/game_simulator.o
+
+# MARK: - Convenience Targets
+# The SDK's common.mk (included via swift.mk) already provides the build
+# targets, all packaging $(PRODUCT) with pdc:
+#   make             device binary + simulator dylib (alias: all)
+#   make simulator   simulator dylib only
+#   make device      device binary only
+.PHONY: run clean-swiftpm
+
+# Build the simulator flavor and launch the pdx in the Playdate Simulator.
+run: simulator
+	open -a "$(SDK)/bin/Playdate Simulator.app" $(PRODUCT)
+
+# common.mk's clean removes the build folder, $(PRODUCT), and the binaries
+# copied into Source/; also drop the .build folder SwiftPM leaves behind
+# when building with build.sh.
+clean: clean-swiftpm
+clean-swiftpm:
+	-rm -rf .build

Examples/HelloPlaydate/Package.swift

@@ -6,7 +6,11 @@ let package = Package(
     name: "HelloPlaydate",
     products: [
         // The Playdate Simulator loads the game as pdex.dylib.
-        .library(name: "pdex", type: .dynamic, targets: ["HelloPlaydate"]),
+        .library(
+            name: "pdex", 
+            type: .dynamic, 
+            targets: ["HelloPlaydate"]
+        ),
     ],
     dependencies: [
         .package(path: "../.."),
@@ -14,7 +18,12 @@ let package = Package(
     targets: [
         .target(
             name: "HelloPlaydate",
-            dependencies: [.product(name: "PlayDate", package: "play-date")]
+            dependencies: [
+                .product(
+                    name: "PlayDate", 
+                    package: "play-date"
+                )
+            ]
         ),
     ]
 )

Examples/HelloPlaydate/README.md

@@ -1,38 +1,37 @@
 # Hello Playdate
 
-A minimal game built on the `play-date` bindings: a bouncing box, a
-crank-aimed needle, button handling, a system menu item, and an FPS counter.
+A minimal game built on the `play-date` bindings: a bouncing box, a crank-aimed needle, button handling, a system menu item, and an FPS counter.
 
 ## Build and run (Playdate Simulator)
 
-With the Playdate SDK installed (and the one-time
-`Scripts/install-pkgconfig.sh` setup from the repository root done):
+With the Playdate SDK installed (and the one-time` Scripts/install-pkgconfig.sh` setup from the repository root done):
 
 ```sh
 ./build.sh
 open -a "$HOME/Developer/PlaydateSDK/bin/Playdate Simulator.app" HelloPlaydate.pdx
 ```
 
-The script compiles the game as a dylib, places it in `Source/` next to
-`pdxinfo`, and runs the SDK's `pdc` to produce `HelloPlaydate.pdx`.
+The script compiles the game as a dylib, places it in `Source/` next to` pdxinfo`, and runs the SDK's `pdc` to produce `HelloPlaydate.pdx`.
 
 ## Device builds
 
-The Makefile cross-compiles the game with Embedded Swift and packages a
-`HelloPlaydate.pdx` containing both the device binary and the simulator
-dylib. It needs:
-
+The Makefile cross-compiles the game with Embedded Swift and packages a` HelloPlaydate.pdx` containing both the device binary and the simulator dylib. It needs:
 - the Playdate SDK (`PLAYDATE_SDK_PATH`, or the path in `~/.Playdate/config`),
 - the Arm GNU toolchain (`arm-none-eabi-gcc`) on `PATH`,
-- a swift.org development-snapshot toolchain (Xcode's toolchain does not
-  ship the Embedded Swift stdlib for the device target). A toolchain
-  installed at `~/Library/Developer/Toolchains` is picked up automatically;
-  otherwise pass `TOOLCHAINS=<bundle id>`.
-
+- a swift.org development-snapshot toolchain (Xcode's toolchain does not  ship the Embedded Swift stdlib for the device target). A toolchain installed at `~/Library/Developer/Toolchains` is picked up automatically; otherwise pass `TOOLCHAINS=<bundle id>`.
 ```sh
 make
 ```
 
-Swift code is compiled with `-Osize` by default; use `make SWIFT_OPT=-O` to
-favor speed over size. Sideload the pdx from the Playdate Simulator
-(Device > Upload Game to Device) or with the SDK's `pdutil`.
+Swift code is compiled with `-Osize` by default; use `make SWIFT_OPT=-O` to favor speed over size. Sideload the pdx from the Playdate Simulator (Device > Upload Game to Device) or with the SDK's `pdutil`.
+
+## Make targets
+
+All build targets package `HelloPlaydate.pdx` with the SDK's `pdc`. Note that every target — the simulator-only ones included — needs the device toolchain setup above, because the shared make rules resolve it up front;` build.sh` is the simulator flow without that requirement.
+| Target | Effect |
+|---|---|
+| `make` | Build the device binary and the simulator dylib (alias: `make all`) |
+| `make simulator` | Build the simulator dylib only |
+| `make device` | Build the device binary only |
+| `make run` | Build the simulator flavor and open the pdx in the Playdate Simulator |
+| `make clean` | Remove the `build/` and `.build/` folders, the pdx, and the binaries copied into `Source/` |