Пример #1
0
func (o *ship) HandleEvent(ev tcell.Event) bool {
	if o.dead {
		return false
	}
	switch ev := ev.(type) {
	case *EventSpriteAccelerate:
		if ev.s != o.ship {
			return false
		}
		vx, _ := o.ship.Velocity()
		if vx >= 1.0 {
			o.ship.SetFrame("RIGHT")
		} else if vx <= -1.0 {
			o.ship.SetFrame("LEFT")
		} else {
			o.ship.SetFrame("FWD")
		}
	case *EventSpriteMove:
		// We don't let ship leave the map
		x, y := o.ship.Position()
		ox, oy := x, y
		vx, vy := o.ship.Velocity()
		w, h := o.level.Size()
		if x < 0 {
			x = 0
			if vx < 0 {
				vx = 0
			}
		} else if x >= w {
			x = w - 1
			if vx > 0 {
				vx = 0
			}
		}
		if y < 0 {
			y = 0
			if vy < 0 {
				vy = 0
			}
		} else if y >= h {
			y = h - 1
			if vy > 0 {
				vy = 0
			}
		}
		if ox != x || oy != y {
			o.ship.SetPosition(x, y)
			o.ship.SetVelocity(vx, vy)
		}

		if y == 0 {
			o.dead = true
			o.level.HandleEvent(&EventLevelComplete{})
		}
		o.adjustView()
	case *EventGravity:
		now := ev.When()
		if !o.lastgrav.IsZero() {
			vx, vy := o.ship.Velocity()
			frac := float64(now.Sub(o.lastgrav))
			frac /= float64(time.Second)
			vy += ev.Accel() * frac
			o.ship.SetVelocity(vx, vy)
		}
		o.lastgrav = now

	case *EventCollision:
		switch ev.Collider().Layer() {
		case LayerTerrain, LayerHazard, LayerShot:
			o.destroy()
		case LayerPad:
			// if we're on the pad, and not too
			// fast, then stay on the pad.
			// TODO: probably the max velocity (4.0)
			// should be tunable.
			vx, vy := o.ship.Velocity()
			x, y := o.ship.Position()
			if vx == 0 && vy > 0 && vy < 4.0 {
				y--
				vy = 0
				o.ship.SetPosition(x, y)
				o.ship.SetVelocity(vx, vy)
				o.launched = false
			} else {
				o.destroy()
			}
		}

	case *EventTimesUp:
		o.destroy()

	case *tcell.EventKey:
		switch ev.Key() {

		case tcell.KeyLeft:
			o.thrustLeft()
			return true

		case tcell.KeyRight:
			o.thrustRight()
			return true

		case tcell.KeyUp:
			o.thrustUp()
			return true

		case tcell.KeyDown:
			o.thrustDown()
			return true

		case tcell.KeyRune:
			switch ev.Rune() {
			case ' ':
				o.shoot()
				return true
			case 'j', 'J':
				o.thrustLeft()
				return true
			case 'k', 'K':
				o.thrustRight()
				return true
			case 'i', 'I':
				o.thrustUp()
				return true
			case 'm', 'M':
				o.thrustDown()
				return true
			}
		}
	case *tcell.EventResize:
		x, y := o.ship.Position()
		o.level.Center(x, y)
		o.adjustView()
	}
	return false
}