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526 lines
10 KiB
526 lines
10 KiB
using UnityEngine; |
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using UnityEngine.UI; |
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using UnityEngine.Events; |
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using System; |
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using System.Collections; |
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using System.Collections.Generic; |
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using System.Text.RegularExpressions; |
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namespace Fungus.Script |
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{ |
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public class Dialog : MonoBehaviour |
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{ |
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public enum DialogSide |
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{ |
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Left, |
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Right |
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}; |
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public float writingSpeed = 60; |
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public AudioClip writingSound; |
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public bool loopWritingSound = true; |
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public float punctuationPause = 0.25f; |
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public Canvas dialogCanvas; |
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public Text nameText; |
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public Text storyText; |
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public Image leftImage; |
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public Image rightImage; |
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float currentSpeed; |
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float currentPunctuationPause; |
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bool boldActive; |
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bool italicActive; |
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bool colorActive; |
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string colorText; |
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protected enum GlyphType |
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{ |
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Character, // Text character |
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BoldStart, // b |
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BoldEnd, // /b |
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ItalicStart, // i |
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ItalicEnd, // /i |
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ColorStart, // color=red |
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ColorEnd, // /color |
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Wait, // w, w=0.5 |
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WaitForInputNoClear, // wi |
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WaitForInputAndClear, // wc |
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WaitOnPunctuation, // wp, wp=0.5 |
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Clear, // c |
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Speed, // s, s=60 |
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Exit // x |
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} |
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protected class Glyph |
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{ |
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public GlyphType type = GlyphType.Character; |
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public string param = ""; |
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} |
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public virtual void ShowDialog(bool visible) |
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{ |
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if (dialogCanvas != null) |
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{ |
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dialogCanvas.gameObject.SetActive(visible); |
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} |
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} |
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public void SetCharacter(Character character) |
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{ |
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if (character == null) |
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{ |
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if (leftImage != null) |
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leftImage.enabled = false; |
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if (rightImage != null) |
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rightImage.enabled = false; |
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if (nameText != null) |
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nameText.text = ""; |
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} |
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else |
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{ |
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SetCharacterImage(character.characterImage, character.dialogSide); |
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SetCharacterName(character.name, character.characterColor); |
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} |
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} |
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public void SetCharacterImage(Sprite image, DialogSide side) |
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{ |
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if (leftImage != null) |
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{ |
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if (image != null && |
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side == DialogSide.Left) |
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{ |
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leftImage.sprite = image; |
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leftImage.enabled = true; |
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} |
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else |
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{ |
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leftImage.enabled = false; |
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} |
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} |
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if (rightImage != null) |
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{ |
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if (image != null && |
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side == DialogSide.Right) |
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{ |
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rightImage.sprite = image; |
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rightImage.enabled = true; |
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} |
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else |
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{ |
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rightImage.enabled = false; |
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} |
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} |
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} |
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public void SetCharacterName(string name, Color color) |
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{ |
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if (nameText != null) |
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{ |
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nameText.text = name; |
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nameText.color = color; |
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} |
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} |
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protected IEnumerator WriteText(string text, Action onWritingComplete, Action onExitTag) |
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{ |
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storyText.text = ""; |
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boldActive = false; |
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italicActive = false; |
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colorActive = false; |
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colorText = ""; |
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currentSpeed = writingSpeed; |
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currentPunctuationPause = punctuationPause; |
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List<Glyph> glyphs = MakeGlyphList(text); |
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if (glyphs.Count == 0) |
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{ |
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yield break; |
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} |
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// Zero speed means write instantly |
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// Also write instantly if text contains rich text markup tags |
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if (currentSpeed == 0 || |
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text.Contains("<")) |
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{ |
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foreach (Glyph glyph in glyphs) |
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{ |
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if (glyph.type == GlyphType.Character) |
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{ |
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storyText.text += glyph.param; |
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} |
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} |
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if (onWritingComplete != null) |
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{ |
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onWritingComplete(); |
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} |
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yield break; |
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} |
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GameObject typingAudio = null; |
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if (writingSound != null) |
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{ |
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typingAudio = new GameObject("WritingSound"); |
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typingAudio.AddComponent<AudioSource>(); |
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typingAudio.audio.clip = writingSound; |
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typingAudio.audio.loop = loopWritingSound; |
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typingAudio.audio.Play(); |
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} |
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float writeDelay = 0f; |
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if (currentSpeed > 0) |
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{ |
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writeDelay = (1f / (float)currentSpeed); |
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} |
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float timeAccumulator = 0f; |
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int i = 0; |
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while (i < glyphs.Count) |
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{ |
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timeAccumulator += Time.deltaTime; |
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while (timeAccumulator > writeDelay) |
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{ |
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timeAccumulator -= writeDelay; |
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Glyph glyph = glyphs[i]; |
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switch (glyph.type) |
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{ |
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case GlyphType.Character: |
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if (storyText.text.Length == 0 && glyph.param == "\n") |
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{ |
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// Ignore leading newlines |
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} |
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else |
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{ |
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// Wrap each individual character in rich text markup tags if required |
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// This must be done at the character level to support writing out the story text over time. |
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string start = ""; |
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string end = ""; |
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if (boldActive) |
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{ |
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start += "<b>"; |
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end += "</b>"; |
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} |
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if (italicActive) |
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{ |
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start += "<i>"; |
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end = "</i>" + end; // Have to nest tags correctly |
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} |
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if (colorActive) |
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{ |
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start += "<color=" + colorText + ">"; |
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end += "</color>"; |
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} |
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storyText.text += start + glyph.param + end; |
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} |
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// Add a wait glyph on punctuation marks |
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if (punctuationPause > 0 && |
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IsPunctuation(glyph.param)) |
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{ |
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// Ignore if next glyph is also punctuation, or if punctuation is the last character. |
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bool skip = (i < glyphs.Count - 1 && |
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glyphs[i + 1].type == GlyphType.Character && |
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IsPunctuation(glyphs[i + 1].param)); |
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if (!skip) |
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yield return new WaitForSeconds(currentPunctuationPause); |
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} |
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break; |
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case GlyphType.BoldStart: |
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boldActive = true; |
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break; |
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case GlyphType.BoldEnd: |
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boldActive = false; |
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break; |
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case GlyphType.ItalicStart: |
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italicActive = true; |
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break; |
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case GlyphType.ItalicEnd: |
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italicActive = false; |
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break; |
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case GlyphType.ColorStart: |
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colorActive = true; |
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colorText = glyph.param; |
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break; |
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case GlyphType.ColorEnd: |
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colorActive = false; |
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break; |
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case GlyphType.Wait: |
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float duration = 1f; |
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if (!Single.TryParse(glyph.param, out duration)) |
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{ |
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duration = 1f; |
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} |
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yield return new WaitForSeconds(duration); |
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timeAccumulator = 0f; |
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break; |
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case GlyphType.WaitForInputNoClear: |
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OnWaitForInputTag(true); |
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yield return StartCoroutine(WaitForInput(null)); |
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OnWaitForInputTag(false); |
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break; |
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case GlyphType.WaitForInputAndClear: |
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OnWaitForInputTag(true); |
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yield return StartCoroutine(WaitForInput(null)); |
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OnWaitForInputTag(false); |
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storyText.text = ""; |
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break; |
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case GlyphType.Clear: |
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storyText.text = ""; |
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break; |
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case GlyphType.Speed: |
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if (!Single.TryParse(glyph.param, out currentSpeed)) |
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{ |
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currentSpeed = 0f; |
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} |
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writeDelay = 0; |
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if (currentSpeed > 0) |
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{ |
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writeDelay = (1f / (float)currentSpeed); |
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} |
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break; |
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case GlyphType.Exit: |
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if (typingAudio != null) |
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{ |
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Destroy(typingAudio); |
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} |
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if (onExitTag != null) |
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{ |
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onExitTag(); |
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} |
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yield break; |
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case GlyphType.WaitOnPunctuation: |
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if (!Single.TryParse(glyph.param, out currentPunctuationPause)) |
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{ |
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currentPunctuationPause = 0f; |
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} |
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break; |
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} |
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if (++i >= glyphs.Count) |
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{ |
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break; |
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} |
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} |
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yield return null; |
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} |
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if (typingAudio != null) |
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{ |
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Destroy(typingAudio); |
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} |
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if (onWritingComplete != null) |
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{ |
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onWritingComplete(); |
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} |
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yield break; |
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} |
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protected virtual void Clear() |
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{ |
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ClearStoryText(); |
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} |
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void ClearStoryText() |
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{ |
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if (storyText != null) |
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{ |
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storyText.text = ""; |
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} |
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} |
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bool IsPunctuation(string character) |
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{ |
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return character == "." || |
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character == "?" || |
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character == "!" || |
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character == ","; |
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} |
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List<Glyph> MakeGlyphList(string storyText) |
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{ |
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List<Glyph> glyphList = new List<Glyph>(); |
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string pattern = @"\{.*?\}"; |
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Regex myRegex = new Regex(pattern); |
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Match m = myRegex.Match(storyText); // m is the first match |
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int position = 0; |
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while (m.Success) |
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{ |
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// Get bit leading up to tag |
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string preText = storyText.Substring(position, m.Index - position); |
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string tagText = m.Value; |
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foreach (char c in preText) |
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{ |
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AddCharacterGlyph(glyphList, c.ToString()); |
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} |
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AddTagGlyph(glyphList, tagText); |
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position = m.Index + tagText.Length; |
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m = m.NextMatch(); |
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} |
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if (position < storyText.Length - 1) |
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{ |
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string postText = storyText.Substring(position, storyText.Length - position); |
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foreach (char c in postText) |
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{ |
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AddCharacterGlyph(glyphList, c.ToString()); |
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} |
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} |
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return glyphList; |
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} |
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void AddCharacterGlyph(List<Glyph> glyphList, string character) |
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{ |
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Glyph glyph = new Glyph(); |
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glyph.type = GlyphType.Character; |
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glyph.param = character; |
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glyphList.Add(glyph); |
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} |
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void AddTagGlyph(List<Glyph> glyphList, string tagText) |
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{ |
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if (tagText.Length < 3 || |
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tagText.Substring(0,1) != "{" || |
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tagText.Substring(tagText.Length - 1,1) != "}") |
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{ |
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return; |
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} |
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string tag = tagText.Substring(1, tagText.Length - 2); |
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GlyphType type = GlyphType.Character; |
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string paramText = ""; |
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if (tag == "b") |
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{ |
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type = GlyphType.BoldStart; |
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} |
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else if (tag == "/b") |
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{ |
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type = GlyphType.BoldEnd; |
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} |
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else if (tag == "i") |
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{ |
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type = GlyphType.ItalicStart; |
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} |
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else if (tag == "/i") |
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{ |
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type = GlyphType.ItalicEnd; |
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} |
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else if (tag.StartsWith("color=")) |
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{ |
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type = GlyphType.ColorStart; |
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paramText = tag.Substring(6, tag.Length - 6); |
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} |
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else if (tag == "/color") |
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{ |
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type = GlyphType.ColorEnd; |
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} |
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else if (tag == "wi") |
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{ |
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type = GlyphType.WaitForInputNoClear; |
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} |
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if (tag == "wc") |
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{ |
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type = GlyphType.WaitForInputAndClear; |
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} |
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else if (tag.StartsWith("wp=")) |
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{ |
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type = GlyphType.WaitOnPunctuation; |
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paramText = tag.Substring(3, tag.Length - 3); |
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} |
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else if (tag == "wp") |
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{ |
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type = GlyphType.WaitOnPunctuation; |
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} |
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else if (tag.StartsWith("w=")) |
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{ |
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type = GlyphType.Wait; |
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paramText = tag.Substring(2, tag.Length - 2); |
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} |
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else if (tag == "w") |
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{ |
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type = GlyphType.Wait; |
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} |
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else if (tag == "c") |
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{ |
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type = GlyphType.Clear; |
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} |
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else if (tag.StartsWith("s=")) |
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{ |
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type = GlyphType.Speed; |
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paramText = tag.Substring(2, tag.Length - 2); |
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} |
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else if (tag == "s") |
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{ |
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type = GlyphType.Speed; |
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} |
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else if (tag == "x") |
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{ |
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type = GlyphType.Exit; |
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} |
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Glyph glyph = new Glyph(); |
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glyph.type = type; |
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glyph.param = paramText.Trim(); |
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glyphList.Add(glyph); |
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} |
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protected IEnumerator WaitForInput(Action onInput) |
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{ |
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while (!Input.GetMouseButtonDown(0)) |
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{ |
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yield return null; |
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} |
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if (onInput != null) |
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{ |
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onInput(); |
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} |
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} |
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protected virtual void OnWaitForInputTag(bool waiting) |
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{} |
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} |
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}
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