engine

Documentation

Overview

Package engine is the implementation of the bouncing balls simulation.

Index

• type Engine
  • func NewEngine(w, h int) *Engine
  • func (e *Engine) ChangeGravityAbs(up bool)
  • func (e *Engine) ChangeMaxBalls(up bool)
  • func (e *Engine) ChangeMinMaxBallRatio(up bool)
  • func (e *Engine) ChangeSpeed(up bool)
  • func (e *Engine) Present(screen *ebiten.Image)
  • func (e *Engine) Restart()
  • func (e *Engine) RotateGravity(counterClockwise bool)
  • func (e *Engine) ToggleOSD()
  • func (e *Engine) Update()

Types

type Engine

type Engine struct {
	// contains filtered or unexported fields
}

Engine is the simulation engine. Contains the model, controls the simulation and presents it on the screen (via the scene).

func NewEngine

func NewEngine(w, h int) *Engine

NewEngine creates a new Engine.

func (*Engine) ChangeGravityAbs

func (e *Engine) ChangeGravityAbs(up bool)

ChangeGravityAbs changes the absolute value of the gravity. Adds +/- 100.

func (*Engine) ChangeMaxBalls

func (e *Engine) ChangeMaxBalls(up bool)

ChangeMaxBalls changes the max number of balls. Adds +/- 1.

func (*Engine) ChangeMinMaxBallRatio

func (e *Engine) ChangeMinMaxBallRatio(up bool)

ChangeMinMaxBallRatio changes the min-max ball ratio. Adds +/- 0.1.

func (*Engine) ChangeSpeed

func (e *Engine) ChangeSpeed(up bool)

ChangeSpeed changes the speed of the simulation. Doubles it if up is true, else halves it.

func (*Engine) Present

func (e *Engine) Present(screen *ebiten.Image)

update updates (recalculates) the world. It does it incrementally until engine state reaches the current timestamp.

func (*Engine) Restart

func (e *Engine) Restart()

Restart restarts the simulation: removes all balls.

func (*Engine) RotateGravity

func (e *Engine) RotateGravity(counterClockwise bool)

RotateGravity rotates the gravity vector. Rotates +/- 10 degrees.

func (*Engine) ToggleOSD

func (e *Engine) ToggleOSD()

ToggleOSD toggles the OSD.

func (*Engine) Update

func (e *Engine) Update()

update updates (recalculates) the world. It does it incrementally until engine state reaches the current timestamp.