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/* ScummVM - Scumm Interpreter
* Copyright (C) 2004 The ScummVM project
*
* The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
*
* 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.
*
* $Header$
*
*/
// Type SDataWord_T must be unpadded
#include "saga.h"
#include "reinherit.h"
#include "yslib.h"
#include "text_mod.h"
#include "script_mod.h"
#include "script.h"
#include "sdata.h"
namespace Saga {
int SDATA_Init() {
unsigned int i;
void *alloc_ptr;
debug(0, "Initializing script data buffers.");
for (i = 0; i < R_SCRIPT_DATABUF_NUM; i++) {
alloc_ptr = malloc(sizeof *ScriptModule.data_buf[0]);
if (alloc_ptr == NULL) {
warning("Error allocating memory for script data buffer %d", i);
return R_MEM;
}
ScriptModule.data_buf[i] = (R_SCRIPT_DATABUF *)alloc_ptr;
alloc_ptr = calloc(R_SCRIPT_DATABUF_LEN, sizeof(SDataWord_T));
if (alloc_ptr == NULL) {
warning("Error allocating memory for script data buffer %d", i);
return R_MEM;
}
ScriptModule.data_buf[i]->len = R_SCRIPT_DATABUF_LEN;
ScriptModule.data_buf[i]->data = (SDataWord_T *)alloc_ptr;
}
return R_SUCCESS;
}
int SDATA_GetWord(int n_buf, int n_word, SDataWord_T * data) {
if ((n_buf < 0) || (n_buf >= R_SCRIPT_DATABUF_NUM)) {
return R_FAILURE;
}
if ((n_word < 0) || (n_word >= ScriptModule.data_buf[n_buf]->len)) {
return R_FAILURE;
}
if (data == NULL) {
return R_FAILURE;
}
*data = ScriptModule.data_buf[n_buf]->data[n_word];
return R_SUCCESS;
}
int SDATA_PutWord(int n_buf, int n_word, SDataWord_T data) {
if ((n_buf < 0) || (n_buf >= R_SCRIPT_DATABUF_NUM)) {
return R_FAILURE;
}
if ((n_word < 0) || (n_word >= ScriptModule.data_buf[n_buf]->len)) {
return R_FAILURE;
}
ScriptModule.data_buf[n_buf]->data[n_word] = data;
return R_SUCCESS;
}
int SDATA_SetBit(int n_buf, SDataWord_T n_bit, int bitstate) {
int n_word;
int n_bitpos;
SDataWord_T bit_pattern = 0x01;
if ((n_buf < 0) || (n_buf >= R_SCRIPT_DATABUF_NUM)) {
return R_FAILURE;
}
if (n_bit >= (unsigned long)ScriptModule.data_buf[n_buf]->len * (sizeof(SDataWord_T) * CHAR_BIT)) {
return R_FAILURE;
}
n_word = n_bit / (sizeof(SDataWord_T) * CHAR_BIT);
n_bitpos = n_bit % (sizeof(SDataWord_T) * CHAR_BIT);
bit_pattern <<= ((sizeof(SDataWord_T) * CHAR_BIT) - (n_bitpos + 1));
if (bitstate) {
ScriptModule.data_buf[n_buf]->data[n_word] |= bit_pattern;
} else {
ScriptModule.data_buf[n_buf]->data[n_word] &= ~bit_pattern;
}
return R_SUCCESS;
}
int SDATA_GetBit(int n_buf, SDataWord_T n_bit, int *bitstate) {
int n_word;
int n_bitpos;
SDataWord_T bit_pattern = 0x01;
if ((n_buf < 0) || (n_buf >= R_SCRIPT_DATABUF_NUM)) {
return R_FAILURE;
}
if (n_bit >= (SDataWord_T) ScriptModule.data_buf[n_buf]->len * (sizeof(SDataWord_T) * CHAR_BIT)) {
return R_FAILURE;
}
n_word = n_bit / (sizeof(SDataWord_T) * CHAR_BIT);
n_bitpos = n_bit % (sizeof(SDataWord_T) * CHAR_BIT);
bit_pattern <<= ((sizeof(SDataWord_T) * CHAR_BIT) - (n_bitpos + 1));
*bitstate = (ScriptModule.data_buf[n_buf]->data[n_word] & bit_pattern) ? 1 : 0;
return R_SUCCESS;
}
int SDATA_ReadWordS(SDataWord_T word) {
uint16 u_int = word;
int s_int;
if (u_int & 0x8000U) {
s_int = (int)(u_int - 0x8000U) - 0x7FFF - 1;
} else {
s_int = u_int;
}
return s_int;
}
uint16 SDATA_ReadWordU(SDataWord_T word) {
uint16 u_int = (uint16) word;
return u_int;
}
} // End of namespace Saga
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