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engines/glk/comprehend/game_opcodes.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 GLK_COMPREHEND_GAME_OPCODES_H
+#define GLK_COMPREHEND_GAME_OPCODES_H
+
+#include "glk/comprehend/game.h"
+
+namespace Glk {
+namespace Comprehend {
+
+/**
+ * Intermediate derived game class that handles script opcodes common to both
+ * version 1 and version 2 of the engine
+ */
+class ComprehendGameOpcodes : public ComprehendGame {
+protected:
+	ScriptOpcode _opcodeMap[0x100];
+
+	void execute_opcode(const Instruction *instr, const Sentence *sentence, FunctionState *func_state) override;
+
+	Item *getItem(const Instruction *instr);
+
+	virtual void func_set_test_result(FunctionState *func_state, bool value);
+	bool isItemPresent(Item *item) const;
+public:
+	ComprehendGameOpcodes();
+
+	virtual byte getOpcode(const Instruction *instr) {
+		return instr->_opcode;
+	}
+	ScriptOpcode getScriptOpcode(const Instruction *instr) override {
+		return _opcodeMap[getOpcode(instr)];
+	}
+};
+
+
+/**
+ * Version 1 Comprehend game
+ */
+class ComprehendGameV1 : public ComprehendGameOpcodes {
+protected:
+	void execute_opcode(const Instruction *instr, const Sentence *sentence, FunctionState *func_state) override;
+public:
+	ComprehendGameV1();
+};
+
+/**
+ * Version 2 Comprehend game
+ */
+class ComprehendGameV2 : public ComprehendGameOpcodes {
+protected:
+	void execute_opcode(const Instruction *instr, const Sentence *sentence, FunctionState *func_state) override;
+public:
+	ComprehendGameV2();
+
+	byte getOpcode(const Instruction *instr) override;
+	void func_set_test_result(FunctionState *func_state, bool value) override;
+};
+
+} // namespace Comprehend
+} // namespace Glk
+
+#endif