From 7eb5924f65debd86f4f336db5ea7bd56f2fc72f4 Mon Sep 17 00:00:00 2001
From: Thierry Crozat
Date: Tue, 7 Nov 2017 23:54:41 +0000
Subject: SUPERNOVA: Implement text speed dialog

The text speed is also saved in the scummvm.ini file so that
it persists between runs.
---
 engines/supernova/state.cpp     |  2 +-
 engines/supernova/supernova.cpp | 57 +++++++++++++++++++++++++++++++++++++++++
 engines/supernova/supernova.h   |  1 +
 3 files changed, 59 insertions(+), 1 deletion(-)

diff --git a/engines/supernova/state.cpp b/engines/supernova/state.cpp
index 08c4f0efe4..7886225fd8 100644
--- a/engines/supernova/state.cpp
+++ b/engines/supernova/state.cpp
@@ -463,7 +463,7 @@ void GameManager::processInput(Common::KeyState &state) {
 		// show game info
 		break;
 	case Common::KEYCODE_F4:
-		// set text speed
+		_vm->setTextSpeed();
 		break;
 	case Common::KEYCODE_F5:
 		// load/save
diff --git a/engines/supernova/supernova.cpp b/engines/supernova/supernova.cpp
index aaa898fcb6..c0b9216de1 100644
--- a/engines/supernova/supernova.cpp
+++ b/engines/supernova/supernova.cpp
@@ -115,6 +115,9 @@ SupernovaEngine::SupernovaEngine(OSystem *syst)
 //	const Common::FSNode gameDataDir(ConfMan.get("path"));
 //	SearchMan.addSubDirectoryMatching(gameDataDir, "sound");
 
+	if (ConfMan.hasKey("textspeed"))
+		_textSpeed = ConfMan.getInt("textspeed");
+
 	// setup engine specific debug channels
 	DebugMan.addDebugChannel(kDebugGeneral, "general", "Supernova general debug channel");
 
@@ -712,6 +715,60 @@ void SupernovaEngine::setColor63(byte value) {
 	_system->getPaletteManager()->setPalette(color, 63, 1);
 }
 
+void SupernovaEngine::setTextSpeed() {
+	const Common::String& textSpeedString = getGameString(kStringTextSpeed);
+	int stringWidth = textWidth(textSpeedString);
+	int textX = (320 - stringWidth) / 2;
+	int textY = 100;
+	stringWidth += 4;
+	int boxX = stringWidth > 110 ? (320 - stringWidth) / 2 : 105;
+	int boxY = 97;
+	int boxWidth = stringWidth > 110 ? stringWidth : 110;
+	int boxHeight = 27;
+
+	_gm->animationOff();
+	_gm->saveTime();
+	saveScreen(boxX, boxY, boxWidth, boxHeight);
+
+	renderBox(boxX, boxY, boxWidth, boxHeight, kColorBlue);
+	renderText(textSpeedString, textX, textY, kColorWhite99); // Text speed
+
+	// Find the closest index in kTextSpeed for the current _textSpeed.
+	// Important note: values in kTextSpeed decrease with the index.
+	int speedIndex = 0;
+	while (speedIndex < 4 && _textSpeed < (kTextSpeed[speedIndex] + kTextSpeed[speedIndex+1]) / 2)
+		++speedIndex;
+
+	char nbString[2];
+	nbString[1] = 0;
+	for (int i = 0; i < 5; ++i) {
+		byte color = i == speedIndex ? kColorWhite63 : kColorWhite35;
+		renderBox(110 + 21 * i, 111, 16, 10, color);
+
+		nbString[0] = '1' + i;
+		renderText(nbString, 115 + 21 * i, 112, kColorWhite99);
+	}
+	do {
+		_gm->getInput();
+		int key = _gm->_keyPressed ? _gm->_key.keycode : Common::KEYCODE_INVALID;
+		if (!_gm->_keyPressed && _gm->_mouseClicked && _gm->_mouseY >= 111 && _gm->_mouseY < 121 && (_gm->_mouseX + 16) % 21 < 16)
+			key = Common::KEYCODE_0 - 5 + (_gm->_mouseX + 16) / 21;
+		if (key == Common::KEYCODE_ESCAPE)
+			break;
+		else if (key >= Common::KEYCODE_1 && key <= Common::KEYCODE_5) {
+			speedIndex = key - Common::KEYCODE_1;
+			_textSpeed = kTextSpeed[speedIndex];
+			ConfMan.setInt("textspeed", _textSpeed);
+			break;
+		}
+	} while (!shouldQuit());
+	_gm->resetInputState();
+
+	restoreScreen();
+	_gm->loadTime();
+	_gm->animationOn();
+}
+
 Common::MemoryReadStream *SupernovaEngine::convertToMod(const char *filename, int version) {
 	// MSN format
 	struct {
diff --git a/engines/supernova/supernova.h b/engines/supernova/supernova.h
index 45705a679b..8606600019 100644
--- a/engines/supernova/supernova.h
+++ b/engines/supernova/supernova.h
@@ -143,6 +143,7 @@ public:
 	void command_print();
 	bool loadGame(int slot);
 	bool saveGame(int slot, const Common::String &description);
+	void setTextSpeed();
 
 	const Common::String &getGameString(int idx) const {
 		if (idx < 0 || idx >= (int)_gameStrings.size())
-- 
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