/*
===========================================================================
Copyright (C) 2015 the OpenMoHAA team

This file is part of OpenMoHAA source code.

OpenMoHAA source code 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.

OpenMoHAA source code 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 OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

// scriptopcodes.h

#pragma once

#include "q_shared.h"

/** Should stay a 8-byte value. */
using opval_t = uint8_t;
/** Store an index in the string table. */
using op_name_t = uint32_t;
/** Event number. */
using op_ev_t = uint32_t;
/** Index in the event name table. */
using op_evName_t = uint32_t;
/** Jump offset. */
using op_offset_t = uint32_t;
/** Parameter count. */
using op_parmNum_t = uint8_t;
/** Parameter count of const array. */
using op_arrayParmNum_t = uint16_t;

typedef struct {
    const char *opcodename;
    int         opcodelength;
    short       opcodestackoffset;
    char        isexternal;
} opcode_t;

typedef struct {
    unsigned char opcode;
    signed char   VarStackOffset;
} opcode_info_t;

typedef enum {
    OP_DONE,
    OP_BOOL_JUMP_FALSE4,
    OP_BOOL_JUMP_TRUE4,
    OP_VAR_JUMP_FALSE4,
    OP_VAR_JUMP_TRUE4,

    OP_BOOL_LOGICAL_AND,
    OP_BOOL_LOGICAL_OR,
    OP_VAR_LOGICAL_AND,
    OP_VAR_LOGICAL_OR,

    OP_BOOL_TO_VAR,

    OP_JUMP4,
    OP_JUMP_BACK4,

    OP_STORE_INT0,
    OP_STORE_INT1,
    OP_STORE_INT2,
    OP_STORE_INT3,
    OP_STORE_INT4,

    OP_BOOL_STORE_FALSE,
    OP_BOOL_STORE_TRUE,

    OP_STORE_STRING,
    OP_STORE_FLOAT,
    OP_STORE_VECTOR,
    OP_CALC_VECTOR,
    OP_STORE_NULL,
    OP_STORE_NIL,

    OP_EXEC_CMD0, // exec normal
    OP_EXEC_CMD1,
    OP_EXEC_CMD2,
    OP_EXEC_CMD3,
    OP_EXEC_CMD4,
    OP_EXEC_CMD5,
    OP_EXEC_CMD_COUNT1,

    OP_EXEC_CMD_METHOD0, // exec from listener
    OP_EXEC_CMD_METHOD1,
    OP_EXEC_CMD_METHOD2,
    OP_EXEC_CMD_METHOD3,
    OP_EXEC_CMD_METHOD4,
    OP_EXEC_CMD_METHOD5,
    OP_EXEC_CMD_METHOD_COUNT1,

    OP_EXEC_METHOD0, // exec from listener with return
    OP_EXEC_METHOD1,
    OP_EXEC_METHOD2,
    OP_EXEC_METHOD3,
    OP_EXEC_METHOD4,
    OP_EXEC_METHOD5,
    OP_EXEC_METHOD_COUNT1,

    OP_LOAD_GAME_VAR,
    OP_LOAD_LEVEL_VAR,
    OP_LOAD_LOCAL_VAR,
    OP_LOAD_PARM_VAR,
    OP_LOAD_SELF_VAR,
    OP_LOAD_GROUP_VAR,
    OP_LOAD_OWNER_VAR,
    OP_LOAD_FIELD_VAR,
    OP_LOAD_ARRAY_VAR,
    OP_LOAD_CONST_ARRAY1,

    OP_STORE_FIELD_REF,
    OP_STORE_ARRAY_REF,

    OP_MARK_STACK_POS,

    OP_STORE_PARAM,

    OP_RESTORE_STACK_POS,

    OP_LOAD_STORE_GAME_VAR,
    OP_LOAD_STORE_LEVEL_VAR,
    OP_LOAD_STORE_LOCAL_VAR,
    OP_LOAD_STORE_PARM_VAR,
    OP_LOAD_STORE_SELF_VAR,
    OP_LOAD_STORE_GROUP_VAR,
    OP_LOAD_STORE_OWNER_VAR,

    OP_STORE_GAME_VAR,
    OP_STORE_LEVEL_VAR,
    OP_STORE_LOCAL_VAR,
    OP_STORE_PARM_VAR,
    OP_STORE_SELF_VAR,
    OP_STORE_GROUP_VAR,
    OP_STORE_OWNER_VAR,
    OP_STORE_FIELD,
    OP_STORE_ARRAY,
    OP_STORE_GAME,
    OP_STORE_LEVEL,
    OP_STORE_LOCAL,
    OP_STORE_PARM,
    OP_STORE_SELF,
    OP_STORE_GROUP,
    OP_STORE_OWNER,

    OP_BIN_BITWISE_AND,
    OP_BIN_BITWISE_OR,
    OP_BIN_BITWISE_EXCL_OR,
    OP_BIN_EQUALITY,
    OP_BIN_INEQUALITY,
    OP_BIN_LESS_THAN,
    OP_BIN_GREATER_THAN,
    OP_BIN_LESS_THAN_OR_EQUAL,
    OP_BIN_GREATER_THAN_OR_EQUAL,
    OP_BIN_PLUS,
    OP_BIN_MINUS,
    OP_BIN_MULTIPLY,
    OP_BIN_DIVIDE,
    OP_BIN_PERCENTAGE,

    OP_UN_MINUS,
    OP_UN_COMPLEMENT,
    OP_UN_TARGETNAME,
    OP_BOOL_UN_NOT,
    OP_VAR_UN_NOT,
    OP_UN_CAST_BOOLEAN,
    OP_UN_INC,
    OP_UN_DEC,
    OP_UN_SIZE,

    OP_SWITCH,

    OP_FUNC,

    OP_NOP,

    OP_BIN_SHIFT_LEFT,
    OP_BIN_SHIFT_RIGHT,

    OP_END,
    OP_RETURN,

    OP_PREVIOUS,
    OP_MAX = OP_PREVIOUS
} opcode_e;

const char *VarGroupName(int iVarGroup);
const char *OpcodeName(int opcode);
int         OpcodeLength(int opcode);
int         OpcodeVarStackOffset(int opcode);
void        SetOpcodeVarStackOffset(int opcode, int iVarStackOffset);
bool        IsExternalOpcode(int opcode);