GODOT=godot3-server
EXPORT_TEMPLATE_SOURCE=https://downloads.tuxfamily.org/godotengine/3.0.2/Godot_v3.0.2-stable_export_templates.tpz
BUILD_DIR?=build
GODOT_PROJECT_PATH?=game
PROJECT_NAME?=game

TARGET_HTML5?=HTML5
TARGET_WINDOWS?=Windows Desktop
TARGET_MACOSX?=Mac OSX
TARGET_LINUX?=Linux/X11

build-dir:
	mkdir -p "$(BUILD_DIR)"

clean:
	rm -rf "$(BUILD_DIR)"/

export-all: export-html5 export-windows export-osx export-linux

export-pack: build-dir
	$(GODOT) --path "$(GODOT_PROJECT_PATH)" --export "pack" "../$(BUILD_DIR)/$(PROJECT_NAME).pck"

export-html5: build-dir
	mkdir -p "$(BUILD_DIR)/html"
	$(GODOT) --path "$(GODOT_PROJECT_PATH)" --export "$(TARGET_HTML5)" "../$(BUILD_DIR)/html/$(PROJECT_NAME).html"
	zip -j -r "$(BUILD_DIR)/$(PROJECT_NAME)-html5.zip" "$(BUILD_DIR)/html"
	rm -rf "$(BUILD_DIR)/html"

export-windows: build-dir
	$(GODOT) --path "$(GODOT_PROJECT_PATH)" --export "$(TARGET_WINDOWS)" "../$(BUILD_DIR)/$(PROJECT_NAME).exe"

export-osx: build-dir
	$(GODOT) --path "$(GODOT_PROJECT_PATH)" --export "$(TARGET_MACOSX)" "../$(BUILD_DIR)/$(PROJECT_NAME)-osx"

export-linux: build-dir
	$(GODOT) --path "$(GODOT_PROJECT_PATH)" --export "$(TARGET_LINUX)" "../$(BUILD_DIR)/$(PROJECT_NAME)-x11"