c++ only tutorials?

I want to create a game for a game jam where I only use cpp for challenge and learning purposes, but where do I find a very simple 2.5d side scroller template and event firing, for instance when a character or object fires an action event

I do only require these with a state machine perhaps for the character animation logic and hitboxes. is there such tutorial?

only character is enough for me to implement it into the enemies.