Initial commit

engines/dgds/dragon_native.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "dgds/dragon_native.h"
+#include "dgds/includes.h"
+#include "dgds/globals.h"
+#include "dgds/scene.h"
+
+namespace Dgds {
+
+
+/*static*/
+void DragonNative::drawCountdown(FontManager::FontType fontType, int16 x, int16 y) {
+	DgdsEngine *engine = DgdsEngine::getInstance();
+	int16 countdownEnd = engine->getGameGlobals()->getGlobal(0x22);
+	int16 currentMins = engine->getClock().getMins();
+	const DgdsFont *fnt = engine->getFontMan()->getFont(fontType);
+	int16 minsLeft = countdownEnd - currentMins;
+	if (minsLeft < 0)
+		minsLeft += 60;
+	Common::String str = Common::String::format("%2d", minsLeft);
+	fnt->drawString(&engine->_compositionBuffer, str, x, y, SCREEN_WIDTH - x, 10);
+}
+
+
+// The first row of this array corresponds to the
+// positions of buttons in game passcode
+// RYP YWP YRPWRY PBW
+static const uint16 DRAGON_PASSCODE[] = {
+	1, 4, 3, 4, 0, 3, 4, 1, 3, 0, 1, 4, 3, 2, 0,
+	4, 4, 2, 3, 4, 0, 0, 4, 3, 2, 1, 1, 2, 4, 0,
+	4, 1, 3, 2, 0, 2, 1, 4, 3, 4, 1, 3, 2, 0, 1
+};
+
+static uint16 passcodeBlockNum = 0;
+static uint16 passcodeVal1 = 0;
+static uint16 passcodeVal2 = 0;
+static uint16 passcodeVal3 = 0;
+static uint16 passcodeVal4 = 0;
+
+/*static*/
+ void DragonNative::updatePasscodeGlobal() {
+	GDSScene *gdsScene = DgdsEngine::getInstance()->getGDSScene();
+	int16 globalval = gdsScene->getGlobal(0x20);
+
+	if (globalval > 34)
+		return;
+
+	if (globalval >= 30) {
+		// One of the keypad buttons
+		if (DRAGON_PASSCODE[passcodeVal4 + passcodeBlockNum * 15] == globalval - 30) {
+			debug(1, "sceneOpUpdatePasscodeGlobal CORRECT: variables %d %d %d %d block %d, curval %d",
+				passcodeVal1, passcodeVal2, passcodeVal3, passcodeVal4, passcodeBlockNum, globalval);
+
+			// Correct entry! Increment the expected button
+			passcodeVal4++;
+			if (passcodeVal4 < passcodeVal3) {
+				globalval = 0;
+			} else if (passcodeVal3 < 15) {
+				globalval = 5;
+			} else {
+				// Finished!
+				globalval = 6;
+			}
+		} else {
+			// Mistake
+			debug(1, "sceneOpUpdatePasscodeGlobal WRONG: variables %d %d %d %d block %d, curval %d",
+				passcodeVal1, passcodeVal2, passcodeVal3, passcodeVal4, passcodeBlockNum, globalval);
+			passcodeVal1 = 0;
+			passcodeVal2 = 5;
+			globalval = 7;
+		}
+	} else {
+		if (globalval > 4 || globalval == 0)
+			return;
+
+		debug(1, "sceneOpUpdatePasscodeGlobal OTHER: variables %d %d %d %d block %d, curval %d",
+				passcodeVal1, passcodeVal2, passcodeVal3, passcodeVal4, passcodeBlockNum, globalval);
+
+		if (globalval < 4) {
+			passcodeBlockNum = globalval - 1; // expect block globalval-1
+			passcodeVal1 = 5;
+			passcodeVal2 = 0;
+			passcodeVal3 = 15;	// 15 buttons expected
+			passcodeVal4 = 0;
+			return;
+		} else if (passcodeVal2 > passcodeVal1) {
+			passcodeVal1++;
+			globalval = DRAGON_PASSCODE[passcodeVal1 + passcodeBlockNum * 15] + 20;
+		} else if (passcodeVal2 > 14) {
+			passcodeVal1 = 0;
+			passcodeVal3 = passcodeVal2;
+			passcodeVal4 = 0;
+			globalval = 8;
+		} else {
+			passcodeVal1 = 0;
+			passcodeVal2 += 5;
+			passcodeVal3 = passcodeVal1;
+			passcodeVal4 = 0;
+			globalval = 8;
+		}
+	}
+
+	gdsScene->setGlobal(0x20, globalval);
+}
+
+
+} // end namespace Dgds