+#include "CharSelect.h"
+
+#include "Font.h"
+#include "Sprite.h"
+#include "../loader/Interpreter.h"
+#include "../loader/TypeDescription.h"
+
+#include <cstring>
+
+using geometry::Vector;
+using loader::FieldDescription;
+using loader::Interpreter;
+using loader::TypeDescription;
+
+namespace graphics {
+
+CharSelect::CharSelect()
+: font(0)
+, cursor(0)
+, chars("")
+, numChars(0)
+, width(10)
+, groupX(0)
+, groupY(0)
+, selected(0) {
+
+}
+
+
+void CharSelect::Draw(SDL_Surface *screen, const Vector<int> &positionIn) const {
+ Vector<int> position(positionIn);
+ Vector<int> lineHead(positionIn);
+ const Vector<int> step(2 * font->CharWidth(), 0);
+ const Vector<int> doubleStep(3 * font->CharWidth(), 0);
+ const Vector<int> newline(0, 2 * font->CharHeight());
+ const Vector<int> doubleNewline(0, 3 * font->CharHeight());
+ const Vector<int> cursorOffset(font->CharWidth() / 2, font->CharHeight() / 2);
+
+ for (int i = 0; chars[i] != '\0'; ++i) {
+ if (i == selected) {
+ cursor->DrawCenter(screen, position + cursorOffset);
+ }
+
+ font->DrawChar(chars[i], screen, position);
+
+ if (i % width == width - 1) {
+ if (groupY > 0 && (i / width) % groupY == groupY - 1) {
+ lineHead += doubleNewline;
+ } else {
+ lineHead += newline;
+ }
+ position = lineHead;
+ } else {
+ if (groupX > 0 && (i % width) % groupX == groupX - 1) {
+ position += doubleStep;
+ } else {
+ position += step;
+ }
+ }
+ }
+}
+
+
+void CharSelect::NextCol() {
+ ++selected;
+ if (selected % width == 0) {
+ selected -= width;
+ }
+}
+
+void CharSelect::PreviousCol() {
+ --selected;
+ if (selected < 0 || selected % width == width - 1) {
+ selected += width;
+ }
+}
+
+void CharSelect::NextRow() {
+ selected += width;
+ if (selected >= numChars) {
+ selected -= numChars;
+ }
+}
+
+void CharSelect::PreviousRow() {
+ selected -= width;
+ if (selected < 0) {
+ selected += numChars;
+ }
+}
+
+
+char CharSelect::Selected() const {
+ return chars[selected];
+}
+
+
+void CharSelect::CreateTypeDescription() {
+ CharSelect c;
+
+ TypeDescription &td(TypeDescription::Create(TYPE_ID, "CharSelect"));
+ td.SetConstructor(&Construct);
+ td.SetLoader(&Load);
+ td.SetSize(sizeof(CharSelect));
+
+ td.AddField("font", FieldDescription(((char *)&c.font) - ((char *)&c), Font::TYPE_ID).SetReferenced().SetDescription("the font to use for characters"));
+ td.AddField("cursor", FieldDescription(((char *)&c.cursor) - ((char *)&c), Sprite::TYPE_ID).SetReferenced().SetDescription("sprite for the cursor"));
+ td.AddField("chars", FieldDescription(((char *)&c.chars) - ((char *)&c), Interpreter::STRING_ID).SetReferenced().SetDescription("characters to select from"));
+
+ td.AddField("width", FieldDescription(((char *)&c.width) - ((char *)&c), Interpreter::NUMBER_ID).SetDescription("the width of one row"));
+ td.AddField("groupX", FieldDescription(((char *)&c.groupX) - ((char *)&c), Interpreter::NUMBER_ID).SetDescription("double space after this many columns"));
+ td.AddField("groupY", FieldDescription(((char *)&c.groupY) - ((char *)&c), Interpreter::NUMBER_ID).SetDescription("double space after this many rows"));
+}
+
+void CharSelect::Construct(void *data) {
+ new (data) CharSelect;
+}
+
+void CharSelect::Load(void *data) {
+ CharSelect *c = reinterpret_cast<CharSelect *>(data);
+ c->numChars = std::strlen(c->chars);
+}
+
+}