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engines/dragons/scriptopcodes.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_SCRIPTOPCODES_H
+#define DRAGONS_SCRIPTOPCODES_H
+
+#include "common/func.h"
+#include "common/str.h"
+
+
+namespace Dragons {
+
+#define DRAGONS_NUM_SCRIPT_OPCODES 0x23
+class DragonsEngine;
+
+struct ScriptOpCall {
+	byte _op;
+	byte *_base;
+	byte *_code;
+	byte *_codeEnd;
+	int _field8;
+	int _result;
+
+	ScriptOpCall(byte *start, uint32 length);
+	void skip(uint size);
+	byte readByte();
+	int16 readSint16();
+	uint32 readUint32();
+};
+
+typedef Common::Functor1<ScriptOpCall&, void> ScriptOpcode;
+
+class DragonFLG;
+class SpecialOpcodes;
+
+class ScriptOpcodes {
+public:
+	ScriptOpcodes(DragonsEngine *vm, DragonFLG *dragonFLG);
+	~ScriptOpcodes();
+	void runScript(ScriptOpCall &scriptOpCall);
+	void runScript3(ScriptOpCall &scriptOpCall);
+	bool runScript4(ScriptOpCall &scriptOpCall);
+	void execOpcode(ScriptOpCall &scriptOpCall);
+	void executeScriptLoop(ScriptOpCall &scriptOpCall);
+	void loadTalkDialogEntries(ScriptOpCall &scriptOpCall);
+
+	int16 _numDialogStackFramesToPop;
+	int16 _scriptTargetINI;
+	SpecialOpcodes *_specialOpCodes;
+
+protected:
+	DragonsEngine *_vm;
+	DragonFLG *_dragonFLG;
+	ScriptOpcode *_opcodes[DRAGONS_NUM_SCRIPT_OPCODES];
+	Common::String _opcodeNames[DRAGONS_NUM_SCRIPT_OPCODES];
+
+	void initOpcodes();
+	void freeOpcodes();
+	void updateReturn(ScriptOpCall &scriptOpCall, uint16 size);
+
+
+	// Opcodes
+	void opUnk1(ScriptOpCall &scriptOpCall);
+	void opAddDialogChoice(ScriptOpCall &scriptOpCall);
+	void opPopDialogStack(ScriptOpCall &scriptOpCall);
+	void opExecuteScript(ScriptOpCall &scriptOpCall); //op 4
+	void opSetActorDirection(ScriptOpCall &scriptOpCall); //op 5
+	void opPerformActionOnObject(ScriptOpCall &scriptOpCall);
+	void opMoveObjectToScene(ScriptOpCall &scriptOpCall);
+	void opActorLoadSequence(ScriptOpCall &scriptOpCall);
+
+	void opSetVariable(ScriptOpCall &scriptOpCall);
+	void opRunSpecialOpCode(ScriptOpCall &scriptOpCall); //op B
+	void opPlayOrStopSound(ScriptOpCall &scriptOpCall);
+	void opDelay(ScriptOpCall &scriptOpCall); //op D
+	void opMoveActorToPoint(ScriptOpCall &scriptOpCall);
+	void opMoveActorToXY(ScriptOpCall &scriptOpCall);
+	void opMoveActorToObject(ScriptOpCall &scriptOpCall);
+	void opUnk11FlickerTalk(ScriptOpCall &scriptOpCall);
+	void opLoadScene(ScriptOpCall &scriptOpCall);
+	void opIfStatement(ScriptOpCall &scriptOpCall);
+	void opIfElseStatement(ScriptOpCall &scriptOpCall);
+	void opUnk15PropertiesRelated(ScriptOpCall &scriptOpCall);
+	void opUnk16(ScriptOpCall &scriptOpCall);
+	void opWaitForActorSequenceToFinish(ScriptOpCall &scriptOpCall);
+	void opDialogAtPoint(ScriptOpCall &scriptOpCall);
+	void opExecuteObjectSceneScript(ScriptOpCall &scriptOpCall);
+	void opUpdatePaletteCycling(ScriptOpCall &scriptOpCall);
+	void opWaitForActorToFinishWalking(ScriptOpCall &scriptOpCall);
+	void opShowActor(ScriptOpCall &scriptOpCall);
+	void opHideActor(ScriptOpCall &scriptOpCall);
+	void opSetActorFlag0x1000(ScriptOpCall &scriptOpCall);
+	void opPlayMusic(ScriptOpCall &scriptOpCall);
+	void opPreLoadSceneData(ScriptOpCall &scriptOpCall);
+	void opPauseCurrentSpeechAndFetchNextDialog(ScriptOpCall &scriptOpCall);
+
+	bool evaluateExpression(ScriptOpCall &scriptOpCall);
+	void setVariable(ScriptOpCall &scriptOpCall);
+	void opCode_Unk7(ScriptOpCall &scriptOpCall);
+
+	void opCodeActorTalk(ScriptOpCall &scriptOpCall); // 0x22
+
+	// misc
+	uint16 getINIField(uint32 iniIndex, uint16 fieldOffset);
+	void setINIField(uint32 iniIndex, uint16 fieldOffset, uint16 value);
+};
+
+} // End of namespace Dragons
+
+#endif // DRAGONS_SCRIPTOPCODES_H