Initial commit

engines/queen/state.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 "queen/state.h"
+
+namespace Queen {
+
+Direction State::findDirection(uint16 state) {
+	static const Direction sd[] = {
+		DIR_BACK,
+		DIR_RIGHT,
+		DIR_LEFT,
+		DIR_FRONT
+	};
+	return sd[(state >> 2) & 3];
+}
+
+StateTalk State::findTalk(uint16 state) {
+	return (state & (1 << 9)) ? STATE_TALK_TALK : STATE_TALK_MUTE;
+}
+
+StateGrab State::findGrab(uint16 state) {
+	static const StateGrab sg[] = {
+		STATE_GRAB_NONE,
+		STATE_GRAB_DOWN,
+		STATE_GRAB_UP,
+		STATE_GRAB_MID
+	};
+	return sg[state & 3];
+}
+
+StateOn State::findOn(uint16 state) {
+	return (state & (1 << 8)) ? STATE_ON_ON : STATE_ON_OFF;
+}
+
+Verb State::findDefaultVerb(uint16 state) {
+	static const Verb sdv[] = {
+		VERB_NONE,
+		VERB_OPEN,
+		VERB_NONE,
+		VERB_CLOSE,
+
+		VERB_NONE,
+		VERB_NONE,
+		VERB_LOOK_AT,
+		VERB_MOVE,
+
+		VERB_GIVE,
+		VERB_TALK_TO,
+		VERB_NONE,
+		VERB_NONE,
+
+		VERB_USE,
+		VERB_NONE,
+		VERB_PICK_UP,
+		VERB_NONE
+	};
+	return sdv[(state >> 4) & 0xF];
+}
+
+StateUse State::findUse(uint16 state) {
+	return (state & (1 << 10)) ? STATE_USE : STATE_USE_ON;
+}
+
+void State::alterOn(uint16 *objState, StateOn state) {
+	switch (state) {
+	case STATE_ON_ON:
+		*objState |= (1 << 8);
+		break;
+	case STATE_ON_OFF:
+		*objState &= ~(1 << 8);
+		break;
+	default:
+		break;
+	}
+}
+
+void State::alterDefaultVerb(uint16 *objState, Verb v) {
+	uint16 val;
+	switch (v) {
+	case VERB_OPEN:
+		val = 1;
+		break;
+	case VERB_CLOSE:
+		val = 3;
+		break;
+	case VERB_MOVE:
+		val = 7;
+		break;
+	case VERB_GIVE:
+		val = 8;
+		break;
+	case VERB_USE:
+		val = 12;
+		break;
+	case VERB_PICK_UP:
+		val = 14;
+		break;
+	case VERB_TALK_TO:
+		val = 9;
+		break;
+	case VERB_LOOK_AT:
+		val = 6;
+		break;
+	default:
+		val = 0;
+		break;
+	}
+	*objState = (*objState & ~0xF0) | (val << 4);
+}
+
+} // End of namespace Queen