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engines/dragons/sequenceopcodes.h

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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/>.
+ *
+ */
+
+#ifndef DRAGONS_SEQUENCEOPCODES_H
+#define DRAGONS_SEQUENCEOPCODES_H
+
+#include "common/func.h"
+#include "common/str.h"
+
+
+namespace Dragons {
+
+#define DRAGONS_NUM_SEQ_OPCODES 22
+class DragonsEngine;
+class Actor;
+
+struct OpCall {
+	byte _op;
+	byte _opSize;
+	int32 _deltaOfs;
+	byte *_code;
+	int _result;
+
+	void skip(uint size);
+	byte readByte();
+	int16 readSint16();
+	uint32 readUint32();
+};
+
+// Convenience macros
+#define ARG_SKIP(x) opCall.skip(x);
+#define ARG_BYTE(name) byte name = opCall.readByte(); debug(5, "ARG_BYTE(" #name " = %d)", name);
+#define ARG_INT8(name) int8 name = opCall.readByte(); debug(5, "ARG_INT8(" #name " = %d)", name);
+#define ARG_INT16(name) int16 name = opCall.readSint16(); debug(5, "ARG_INT16(" #name " = %d)", name);
+#define ARG_UINT32(name) uint32 name = opCall.readUint32(); debug(5, "ARG_UINT32(" #name " = %08X)", name);
+
+typedef Common::Functor2<Actor*, OpCall&, void> SequenceOpcode;
+
+class SequenceOpcodes {
+public:
+	SequenceOpcodes(DragonsEngine *vm);
+	~SequenceOpcodes();
+	void execOpcode(Actor *actor, OpCall &opCall);
+
+protected:
+	DragonsEngine *_vm;
+	SequenceOpcode *_opcodes[DRAGONS_NUM_SEQ_OPCODES];
+	Common::String _opcodeNames[DRAGONS_NUM_SEQ_OPCODES];
+	void initOpcodes();
+	void freeOpcodes();
+	void updateReturn(OpCall &opCall, uint16 size);
+
+	// Opcodes
+	void opSetFramePointer(Actor *actor, OpCall &opCall);
+	void opSetFramePointerAndStop(Actor *actor, OpCall &opCall);
+	void opJmp(Actor *actor, OpCall &opCall);
+	void opSetSequenceTimerStartValue(Actor *actor, OpCall &opCall);
+	void opSetSequenceTimer(Actor *actor, OpCall &opCall);
+	void opUpdateXYResetSeqTimer(Actor *actor, OpCall &opCall);
+	void opUpdateXYResetSeqTimerAndStop(Actor *actor, OpCall &opCall);
+
+	void opSetActorFlag4AndStop(Actor *actor, OpCall &opCall);
+	void opSetActorFlags404(Actor *actor, OpCall &opCall);
+	void opClearActorFlag400(Actor *actor, OpCall &opCall);
+	void opChangeSequence(Actor *actor, OpCall &opCall);
+
+	void opSetField7a(Actor *actor, OpCall &opCall);
+	void opUpdateFlags(Actor *actor, OpCall &opCall);
+	void opPlaySound(Actor *actor, OpCall &opCall);
+	void opSetXY(Actor *actor, OpCall &opCall);
+	void opSetXYAndStop(Actor *actor, OpCall &opCall);
+
+};
+
+} // End of namespace Dragons
+
+#endif // DRAGONS_SEQUENCEOPCODES_H