Added text boxes

Text now reveals itself and scrolls! Yay! It even plays speaker beeps.

TODO: the arror indicating an A press is needed. Bullets on lines that need bullets. The header that says who the speaker is, if relevant.

1 files changed, 63 insertions, 0 deletions

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+#include "font.h"
+#include <fstream>
+#include <iostream>
+#include "renderer.h"
+
+inline int charToIndex(char ch) {
+  return static_cast<int>(ch) - static_cast<int>('!');
+}
+
+Font::Font(std::string_view filename, Renderer& renderer) {
+  std::ifstream fontfile(filename.data());
+  if (!fontfile.is_open()) {
+    throw std::invalid_argument("Can't find font file: " + std::string(filename));
+  }
+
+  std::string imagefilename;
+  fontfile >> imagefilename;
+  textureId_ = renderer.loadImageFromFile(imagefilename);
+
+  std::string line;
+  char ch;
+
+  int numChars;
+  fontfile >> numChars;
+  std::getline(fontfile, line); // characters
+
+  fontfile >> columns_;
+  std::getline(fontfile, line); // characters per row
+
+  fontfile >> tileSize_.x();
+  fontfile >> ch; // x
+  fontfile >> tileSize_.y();
+  std::getline(fontfile, line); // tile size
+
+  std::getline(fontfile, line); // ignore the baseline location
+  std::getline(fontfile, line); // blank
+
+  for (int i=0; i<numChars; i++) {
+    fontfile >> ch; // the character
+
+    int width;
+    fontfile >> width;
+
+    widths_.push_back(width);
+  }
+}
+
+vec2i Font::getCharacterLocation(char ch) const {
+  int index = charToIndex(ch);
+  return (vec2i { index % columns_, index / columns_ }) * tileSize_;
+}
+
+vec2i Font::getCharacterSize(char ch) const {
+  int index = charToIndex(ch);
+  return { widths_.at(index), tileSize_.h() };
+}
+
+int Font::getCharacterWidth(char ch) const {
+  if (ch == ' ') {
+    return 3;
+  }
+  return widths_.at(charToIndex(ch));
+}