make check

Makefile

@@ -3,12 +3,21 @@ help:
 	@echo "\tmake pdf"
 	@echo "\tmake creature"
 	@echo "\tmake show"
+	@echo "\tmake check (to check your dependencies)"
 	@echo "\tmake install-godot"
 	@echo "\tmake uninstall-godot"
 
 .PHONY: pdf
 pdf: overview.pdf
 
+.PHONY: check
+check:
+	@which lowdown >/dev/null || echo 'install lowdown (optional)'
+	@which git-lfs >/dev/null || echo 'install git-lfs'
+	@which pdflatex >/dev/null || echo 'install pdflatex (optional)'
+	@which less >/dev/null || echo 'install less (you absolute cave-man)'
+	@godot --version | grep -q '4.2' || echo 'install godot version 4.2'
+
 rubbish/:
 	mkdir rubbish