eventlog.go

package main

import (
	"fmt"
	"log"
	"time"

	"github.com/tanema/gween"
	"github.com/tanema/gween/ease"
)

type Event struct {
	Text       string
	Time       string
	Multiplier int
	Y          float32
	Tween      *gween.Sequence
}

func (event *Event) Done() bool {
	_, _, done := event.Tween.Update(0)
	return done
}

type EventLog struct {
	On     bool
	Events []*Event
}

func NewEventLog() *EventLog {
	return &EventLog{Events: []*Event{}, On: true}
}

func (eventLog *EventLog) Log(text string, force bool, variables ...interface{}) {

	if !force && (!eventLog.On || !globals.Settings.Get(SettingsDisplayMessages).AsBool()) {
		return
	}

	output := text

	if len(variables) > 0 {
		output = fmt.Sprintf(text, variables...)
	}

	var pastEvent *Event

	if len(eventLog.Events) > 0 {

		if pe := eventLog.Events[len(eventLog.Events)-1]; pe.Text == output {
			pastEvent = pe
			if pastEvent.Tween.Index() >= 1 {
				pastEvent.Tween.SetIndex(1)
				pastEvent.Tween.Tweens[pastEvent.Tween.Index()].Reset()
			}
			pastEvent.Multiplier++
		}

	}

	// Log the event so that it goes to the log file in addition to the messages at the bottom-left
	log.Println(output)

	if pastEvent == nil {

		eventLog.Events = append(eventLog.Events, &Event{
			Text: output,
			Time: time.Now().Format("15:04:05"),
			Tween: gween.NewSequence(
				gween.New(0, 1, 0.5, ease.Linear),
				gween.New(1, 1, float32(len(output))*0.05, ease.Linear),
				gween.New(1, 0, 0.5, ease.Linear),
			),
			// Texture: globals.TextRenderer.RenderText(output, Point{}, AlignLeft),
			Y: globals.ScreenSize.Y,
		})

	}

}

func (eventLog *EventLog) CleanUpDeadEvents() {
	events := append([]*Event{}, eventLog.Events...)
	for _, e := range events {
		if e.Done() {
			eventLog.Remove(e)
		}
	}
}

func (eventLog *EventLog) Remove(event *Event) {
	for i, e := range eventLog.Events {
		if e == event {
			eventLog.Events[i] = nil
			eventLog.Events = append(eventLog.Events[:i], eventLog.Events[i+1:]...)
			return
		}
	}
}