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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.
*
* $Header$
*
*/
// Palette animation module
#include "saga/saga.h"
#include "saga/gfx.h"
#include "saga/events_mod.h"
#include "saga/game_mod.h"
#include "saga/palanim_mod.h"
#include "saga/palanim.h"
namespace Saga {
static PALANIM_DATA PAnimData;
int PALANIM_Load(const byte *resdata, size_t resdata_len) {
void *test_p;
uint16 i;
if (PAnimData.loaded) {
PALANIM_Free();
}
if (resdata == NULL) {
return R_FAILURE;
}
MemoryReadStream readS(resdata, resdata_len);
if (GAME_GetGameType() == R_GAMETYPE_IHNM) {
return R_SUCCESS;
}
PAnimData.entry_count = readS.readUint16LE();
debug(0, "PALANIM_Load(): Loading %d PALANIM entries.", PAnimData.entry_count);
test_p = calloc(PAnimData.entry_count, sizeof(PALANIM_ENTRY));
if (test_p == NULL) {
warning("PALANIM_Load(): Allocation failure");
return R_MEM;
}
PAnimData.entries = (PALANIM_ENTRY *)test_p;
for (i = 0; i < PAnimData.entry_count; i++) {
int color_count;
int pal_count;
int p, c;
color_count = readS.readUint16LE();
pal_count = readS.readUint16LE();
PAnimData.entries[i].pal_count = pal_count;
PAnimData.entries[i].color_count = color_count;
debug(2, "PALANIM_Load(): Entry %d: Loading %d palette indices.\n", i, pal_count);
test_p = calloc(1, sizeof(char) * pal_count);
if (test_p == NULL) {
warning("PALANIM_Load(): Allocation failure");
return R_MEM;
}
PAnimData.entries[i].pal_index = (byte *)test_p;
debug(2, "PALANIM_Load(): Entry %d: Loading %d SAGA_COLOR structures.", i, color_count);
test_p = calloc(1, sizeof(R_COLOR) * color_count);
if (test_p == NULL) {
warning("PALANIM_Load(): Allocation failure");
return R_MEM;
}
PAnimData.entries[i].colors = (R_COLOR *)test_p;
for (p = 0; p < pal_count; p++) {
PAnimData.entries[i].pal_index[p] = readS.readByte();
}
for (c = 0; c < color_count; c++) {
PAnimData.entries[i].colors[c].red = readS.readByte();
PAnimData.entries[i].colors[c].green = readS.readByte();
PAnimData.entries[i].colors[c].blue = readS.readByte();
}
}
PAnimData.loaded = 1;
return R_SUCCESS;
}
int PALANIM_CycleStart() {
R_EVENT event;
if (!PAnimData.loaded) {
return R_FAILURE;
}
event.type = R_ONESHOT_EVENT;
event.code = R_PALANIM_EVENT;
event.op = EVENT_CYCLESTEP;
event.time = PALANIM_CYCLETIME;
EVENT_Queue(&event);
return R_SUCCESS;
}
int PALANIM_CycleStep(int vectortime) {
R_SURFACE *back_buf;
static PALENTRY pal[256];
uint16 pal_index;
uint16 col_index;
uint16 i, j;
uint16 cycle;
uint16 cycle_limit;
R_EVENT event;
if (!PAnimData.loaded) {
return R_FAILURE;
}
_vm->_gfx->getCurrentPal(pal);
back_buf = _vm->_gfx->getBackBuffer();
for (i = 0; i < PAnimData.entry_count; i++) {
cycle = PAnimData.entries[i].cycle;
cycle_limit = PAnimData.entries[i].color_count;
for (j = 0; j < PAnimData.entries[i].pal_count; j++) {
pal_index = (unsigned char)PAnimData.entries[i].pal_index[j];
col_index = (cycle + j) % cycle_limit;
pal[pal_index].red = (byte) PAnimData.entries[i].colors[col_index].red;
pal[pal_index].green = (byte) PAnimData.entries[i].colors[col_index].green;
pal[pal_index].blue = (byte) PAnimData.entries[i].colors[col_index].blue;
}
PAnimData.entries[i].cycle++;
if (PAnimData.entries[i].cycle == cycle_limit) {
PAnimData.entries[i].cycle = 0;
}
}
_vm->_gfx->setPalette(back_buf, pal);
event.type = R_ONESHOT_EVENT;
event.code = R_PALANIM_EVENT;
event.op = EVENT_CYCLESTEP;
event.time = vectortime + PALANIM_CYCLETIME;
EVENT_Queue(&event);
return R_SUCCESS;
}
int PALANIM_Free() {
uint16 i;
if (!PAnimData.loaded) {
return R_FAILURE;
}
for (i = 0; i < PAnimData.entry_count; i++) {
debug(2, "PALANIM_Free(): Entry %d: Freeing colors.", i);
free(PAnimData.entries[i].colors);
debug(2, "PALANIM_Free(): Entry %d: Freeing indices.", i);
free(PAnimData.entries[i].pal_index);
}
debug(0, "PALANIM_Free(): Freeing entries.");
free(PAnimData.entries);
PAnimData.loaded = 0;
return R_SUCCESS;
}
} // End of namespace Saga
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