runner

README

# Runner (endless runner, sprite animations)

The player runs automatically; Space is the only input. Jump the crates, survive as far as you can. Distance is your score.

cd examples/runner
go run .

What this example proves

Sprite sheet animation. The player defines three animations from horizontal strips and switches between them:

player := play.Add(engine.Rect(32, 48, engine.Blue).At(150, 480).WithGravity().
    Animation("run", "sprites/run.png", 4, 10).   // 4 frames, 10 fps, loops
    Animation("jump", "sprites/jump.png", 2, 6).
    Animation("death", "sprites/death.png", 4, 8))

player.Play("run")        // loops; calling it every frame is fine
player.PlayOnce("death")  // plays once, holds the last frame

The run/jump switch is one line in OnUpdate driven by Grounded(), and death is a PlayOnce so the body stays down.

Auto-scrolling needs no camera. The screen appears to scroll because the world moves: crates spawn off the right edge with Vx = -300 while the player's x never changes. The classic moving-world trick, and it works with zero engine support.

Documentation

Overview

Runner: an endless runner with a drawn sprinter. The world moves, the player stays; Space is the only input. Menu, run/jump/death animations, tiled ground, sunset hills.

Run from this folder: cd examples/runner && go run .