An open-source example using Castle Game Engine, a playable platformer game.

Using touch input on Android:

- Press in the left-bottom screen part to move left.
- Press in the right-bottom screen part to move right.
- Press in the upper screen part to jump.
- Press at least 2 fingers on the touch device simultaneously to shoot.

Features:

- Level (and all UI) designed visually using the Castle Game Engine editor.

- Sprites sheets designed using CGE editor and managed in .castle-sprite-sheet format (see sprite sheets docs).

- Full platformer gameplay. Player can move, jump, pick up a weapon, be hurt by enemies, be hurt by obstacles, collect things, die, finish the level. Extra jumps in the air are possible (check out Advanced player checkbox). Enemies move following a simple pattern.

- Sound and music.

- All states you expect from a usual game — main menu, options (with volume configuration), pause, credits, game over and of course the actual game.

Castle Game Engine on https://castle-engine.io/ . The platformer source code is inside, see examples/platformer ( https://github.com/castle-engine/castle-engine/tree/master/examples/platformer ).