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/* ScummVM - Scumm Interpreter
* Copyright (C) 2004-2005 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.
*
* $Header$
*
*/
// Isometric level module - private header
#ifndef SAGA_ISOMAP_H_
#define SAGA_ISOMAP_H_
#include "saga/actor.h"
namespace Saga {
#define SAGA_ISOTILEDATA_LEN 8
#define SAGA_ISOTILE_WIDTH 32
#define SAGA_ISOTILE_BASEHEIGHT 15
#define SAGA_TILE_NOMINAL_H 16
#define SAGA_MAX_TILE_H 64
#define SAGA_TILEPLATFORMDATA_LEN 136
#define SAGA_PLATFORM_W 8
#define SAGA_MAX_PLATFORM_H 16
#define SAGA_TILEMAP_LEN 514
#define SAGA_TILEMAP_W 16
#define SAGA_TILEMAP_H 16
#define SAGA_METATILEDATA_LEN 36
#define SAGA_MULTI_TILE (1 << 15)
#define SAGA_SCROLL_LIMIT_X1 32
#define SAGA_SCROLL_LIMIT_X2 64
#define SAGA_SCROLL_LIMIT_Y1 8
#define SAGA_SCROLL_LIMIT_Y2 32
enum TileMapEdgeType {
kEdgeTypeBlack = 0,
kEdgeTypeFill0 = 1,
kEdgeTypeFill1 = 2,
kEdgeTypeRpt = 3,
kEdgeTypeWrap = 4
};
struct IsoTileData {
byte height;
int8 attributes;
size_t offset;
uint16 terrainMask;
byte FGBGAttr;
};
struct TilePlatformData {
int16 metaTile;
int16 height;
int16 highestPixel;
byte vBits;
byte uBits;
int16 tiles[SAGA_PLATFORM_W][SAGA_PLATFORM_W];
};
struct TileMapData {
byte edgeType;
int16 tilePlatforms[SAGA_TILEMAP_W][SAGA_TILEMAP_H];
};
struct MetaTileData {
uint16 highestPlatform;
uint16 highestPixel;
int16 stack[SAGA_MAX_PLATFORM_H];
};
struct MultiTileEntryData {
int16 offset;
byte u;
byte v;
byte h;
byte uSize;
byte vSize;
byte numStates;
byte currentState;
};
class IsoMap {
public:
IsoMap(SagaEngine *vm);
~IsoMap() {
freeMem();
}
void loadImages(const byte * resourcePointer, size_t resourceLength);
void loadMap(const byte * resourcePointer, size_t resourceLength);
void loadPlatforms(const byte * resourcePointer, size_t resourceLength);
void loadMetaTiles(const byte * resourcePointer, size_t resourceLength);
void loadMulti(const byte * resourcePointer, size_t resourceLength);
void freeMem();
int draw(SURFACE *ds);
void drawSprite(SURFACE *ds, SpriteList &spriteList, int spriteNumber, const Location &location, const Point &screenPosition, int scale);
void adjustScroll(bool jump);
void tileCoordsToScreenPoint(const Location &location, Point &position) {
position.x = location.u() - location.v() + (128 * SAGA_TILEMAP_W) - _viewScroll.x + 16;
position.y = -((location.u() + location.v()) >> 1) + (128 * SAGA_TILEMAP_W) - _viewScroll.y - location.z;
}
private:
void drawTiles(SURFACE *ds, const Location *location);
void drawMetaTile(SURFACE *ds, uint16 metaTileIndex, const Point &point, int16 absU, int16 absV);
void drawSpriteMetaTile(SURFACE *ds, uint16 metaTileIndex, const Point &point, Location &location, int16 absU, int16 absV);
void drawPlatform(SURFACE *ds, uint16 platformIndex, const Point &point, int16 absU, int16 absV, int16 absH);
void drawSpritePlatform(SURFACE *ds, uint16 platformIndex, const Point &point, const Location &location, int16 absU, int16 absV, int16 absH);
void drawTile(SURFACE *ds, uint16 tileIndex, const Point &point);
void drawSpriteTile(SURFACE *ds, uint16 tileIndex, const Location &location, const Point &point);
int16 smoothSlide(int16 value, int16 min, int16 max) {
if (value < min) {
if (value < min - 100 || value > min - 4) {
value = min;
} else {
value += 4;
}
} else {
if (value > max) {
if (value > max + 100 || value < max + 4) {
value = max;
} else {
value -= 4;
}
}
}
return value;
}
byte *_tileData;
size_t _tileDataLength;
uint16 _tilesCount;
IsoTileData *_tilesTable;
uint16 _tilePlatformsCount;
TilePlatformData *_tilePlatformList;
uint16 _metaTilesCount;
MetaTileData *_metaTileList;
uint16 _multiCount;
MultiTileEntryData *_multiTable;
TileMapData _tileMap;
Point _mapPosition;
public:
int _viewDiff;
Point _viewScroll;
Rect _tileClip;
SagaEngine *_vm;
};
} // End of namespace Saga
#endif
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