ILLUSIONS: More work on the script system

1 files changed, 103 insertions, 0 deletions

diff --git a/engines/illusions/scriptthread.cpp b/engines/illusions/scriptthread.cpp
new file mode 100644
index 0000000000..a594101107
--- /dev/null
+++ b/engines/illusions/scriptthread.cpp
@@ -0,0 +1,103 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "illusions/illusions.h"
+#include "illusions/scriptthread.h"
+#include "illusions/scriptman.h"
+#include "illusions/scriptopcodes.h"
+
+namespace Illusions {
+
+// OpCall
+
+void OpCall::skip(uint size) {
+	_scriptCode += size;
+}
+
+byte OpCall::readByte() {
+	return *_scriptCode++;
+}
+
+int16 OpCall::readSint16() {
+	int16 value = READ_LE_UINT16(_scriptCode);
+	_scriptCode += 2;
+	return value;
+}
+
+uint32 OpCall::readUint32() {
+	uint32 value = READ_LE_UINT32(_scriptCode);
+	_scriptCode += 4;
+	return value;
+}
+
+// ScriptThread
+
+ScriptThread::ScriptThread(IllusionsEngine *vm, uint32 threadId, uint32 callingThreadId, uint notifyFlags,
+	byte *scriptCodeIp, uint32 value8, uint32 valueC, uint32 value10)
+	: Thread(vm, threadId, callingThreadId, notifyFlags), _scriptCodeIp(scriptCodeIp), _value8(value8),
+	_valueC(valueC), _value10(value10), _sequenceStalled(0) {
+	_type = kTTScriptThread;
+}
+
+int ScriptThread::onUpdate() {
+	OpCall opCall;
+	opCall._result = kTSRun;
+	while (!_terminated && opCall._result == 4) {
+		opCall._op = _scriptCodeIp[0];
+		opCall._opSize = _scriptCodeIp[1] >> 1;
+		opCall._threadId = _scriptCodeIp[1] & 1 ? _threadId : 0;
+		opCall._scriptCode = _scriptCodeIp + 2;
+		opCall._deltaOfs = 0;
+		execOpcode(opCall);
+		_scriptCodeIp += opCall._opSize + opCall._deltaOfs;
+	}
+	if (_terminated)
+		opCall._result = kTSTerminate;
+	return opCall._result;
+}
+
+void ScriptThread::onSuspend() {
+	// TODO
+}
+
+void ScriptThread::onNotify() {
+	// TODO
+}
+
+void ScriptThread::onPause() {
+	// TODO
+}
+
+void ScriptThread::onResume() {
+	// TODO
+}
+
+void ScriptThread::onTerminated() {
+	// TODO
+}
+
+void ScriptThread::execOpcode(OpCall &opCall) {
+	// TODO Clean this up
+	_vm->_scriptMan->_scriptOpcodes->execOpcode(this, opCall);
+}
+
+} // End of namespace Illusions