adding initial code for Another World engine

svn-id: r13783

1 files changed, 114 insertions, 0 deletions

diff --git a/awe/logic.h b/awe/logic.h
new file mode 100644
index 0000000000..7763c5204d
--- /dev/null
+++ b/awe/logic.h
@@ -0,0 +1,114 @@
+/* AWE - Another World Engine
+ * Copyright (C) 2004 Gregory Montoir
+ * Copyright (C) 2004 The ScummVM project
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef __LOGIC_H__
+#define __LOGIC_H__
+
+#include "stdafx.h"
+
+#include "intern.h"
+
+namespace Awe {
+
+struct Resource;
+struct Serializer;
+struct SystemStub;
+struct Video;
+
+struct Logic {
+	typedef void (Logic::*OpcodeStub)();
+
+	enum ScriptVars {
+		VAR_RANDOM_SEED          = 0x3C,
+		
+		VAR_LAST_KEYCHAR         = 0xDA,
+
+		VAR_HERO_POS_UP_DOWN     = 0xE5,
+
+		VAR_SCROLL_Y             = 0xF9,
+		VAR_HERO_ACTION          = 0xFA,
+		VAR_HERO_POS_JUMP_DOWN   = 0xFB,
+		VAR_HERO_POS_LEFT_RIGHT  = 0xFC,
+		VAR_HERO_POS_MASK        = 0xFD,
+		VAR_HERO_ACTION_POS_MASK = 0xFE,
+		VAR_PAUSE_SLICES         = 0xFF
+	};
+	
+	static const OpcodeStub _opTable[];
+
+	Resource *_res;
+	Video *_vid;
+	SystemStub *_stub;
+
+	int16 _scriptVar_0xBF;
+	int16 _scriptVars[0x100];
+	uint16 _scriptStackCalls[0x40];
+	uint16 _scriptPos[2][0x40];
+	uint8 _scriptPaused[2][0x40];
+	Ptr _scriptPtr;
+	uint8 _stackPtr;
+	bool _scriptHalted;
+	bool _fastMode;
+
+	Logic(Resource *res, Video *vid, SystemStub *stub);
+	void init();
+	
+	void op_movConst();
+	void op_mov();
+	void op_add();
+	void op_addConst();
+	void op_call();
+	void op_ret();
+	void op_break();
+	void op_jmp();
+	void op_setScriptPos();
+	void op_jnz();
+	void op_condJmp();
+	void op_setPalette();
+	void op_resetScript();
+	void op_selectPage();
+	void op_fillPage();
+	void op_copyPage();
+	void op_updateDisplay();
+	void op_halt();	
+	void op_drawString();
+	void op_sub();
+	void op_and();
+	void op_or();
+	void op_shl();
+	void op_shr();
+	void op_soundUnk1();
+	void op_updateMemList();
+	void op_soundUnk2();
+
+	void restartAt(uint16 ptrId);
+	void setupPtrs(uint16 ptrId);
+	void setupScripts();
+	void runScripts();
+	void executeScript();
+
+	void inp_updatePlayer();
+	void inp_handleSpecialKeys();
+	
+	void saveOrLoad(Serializer &ser);
+};
+
+}
+
+#endif