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engines/illusions/scriptopcodes.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 "illusions/illusions.h"
+#include "illusions/scriptopcodes.h"
+#include "illusions/threads/scriptthread.h"
+
+namespace Illusions {
+
+// OpCall
+
+void OpCall::skip(uint size) {
+	_code += size;
+}
+
+byte OpCall::readByte() {
+	return *_code++;
+}
+
+int16 OpCall::readSint16() {
+	int16 value = READ_LE_UINT16(_code);
+	_code += 2;
+	return value;
+}
+
+uint32 OpCall::readUint32() {
+	uint32 value = READ_LE_UINT32(_code);
+	_code += 4;
+	return value;
+}
+
+// ScriptOpcodes
+
+ScriptOpcodes::ScriptOpcodes(IllusionsEngine *vm)
+	: _vm(vm) {
+	initOpcodes();
+}
+
+ScriptOpcodes::~ScriptOpcodes() {
+	freeOpcodes();
+}
+
+void ScriptOpcodes::execOpcode(ScriptThread *scriptThread, OpCall &opCall) {
+	if (!_opcodes[opCall._op])
+		error("ScriptOpcodes::execOpcode() Unimplemented opcode %d", opCall._op);
+	debug(2, "execOpcode([%08X] %d) %s", opCall._callerThreadId, opCall._op, _opcodeNames[opCall._op].c_str());
+	(*_opcodes[opCall._op])(scriptThread, opCall);
+}
+
+} // End of namespace Illusions