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/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD 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, version 2.
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file sprite.h Base for drawing complex sprites. */
#ifndef SPRITE_H
#define SPRITE_H
#include "transparency.h"
#include "table/sprites.h"
#define GENERAL_SPRITE_COLOUR(colour) ((colour) + PALETTE_RECOLOUR_START)
#define COMPANY_SPRITE_COLOUR(owner) (GENERAL_SPRITE_COLOUR(_company_colours[owner]))
/* The following describes bunch of sprites to be drawn together in a single 3D
* bounding box. Used especially for various multi-sprite buildings (like
* depots or stations): */
/** A tile child sprite and palette to draw for stations etc, with 3D bounding box */
struct DrawTileSeqStruct {
int8 delta_x; ///< \c 0x80 is sequence terminator
int8 delta_y;
int8 delta_z; ///< \c 0x80 identifies child sprites
byte size_x;
byte size_y;
byte size_z;
PalSpriteID image;
/** Make this struct a sequence terminator. */
void MakeTerminator()
{
this->delta_x = (int8)0x80;
}
/** Check whether this is a sequence terminator. */
bool IsTerminator() const
{
return (byte)this->delta_x == 0x80;
}
/** Check whether this is a parent sprite with a boundingbox. */
bool IsParentSprite() const
{
return (byte)this->delta_z != 0x80;
}
};
/** Ground palette sprite of a tile, together with its child sprites */
struct DrawTileSprites {
PalSpriteID ground; ///< Palette and sprite for the ground
const DrawTileSeqStruct *seq; ///< Array of child sprites. Terminated with a terminator entry
};
/**
* This structure is the same for both Industries and Houses.
* Buildings here reference a general type of construction
*/
struct DrawBuildingsTileStruct {
PalSpriteID ground;
PalSpriteID building;
byte subtile_x;
byte subtile_y;
byte width;
byte height;
byte dz;
byte draw_proc; // this allows to specify a special drawing procedure.
};
/** Iterate through all DrawTileSeqStructs in DrawTileSprites. */
#define foreach_draw_tile_seq(idx, list) for (idx = list; !idx->IsTerminator(); idx++)
void DrawCommonTileSeq(const struct TileInfo *ti, const DrawTileSprites *dts, TransparencyOption to, int32 orig_offset, uint32 newgrf_offset, PaletteID default_palette, bool child_offset_is_unsigned);
void DrawCommonTileSeqInGUI(int x, int y, const DrawTileSprites *dts, int32 orig_offset, uint32 newgrf_offset, PaletteID default_palette, bool child_offset_is_unsigned);
/**
* Draw tile sprite sequence on tile with railroad specifics.
* @param total_offset Spriteoffset from normal rail to current railtype.
* @param newgrf_offset Startsprite of the Action1 to use.
*/
static inline void DrawRailTileSeq(const struct TileInfo *ti, const DrawTileSprites *dts, TransparencyOption to, int32 total_offset, uint32 newgrf_offset, PaletteID default_palette)
{
DrawCommonTileSeq(ti, dts, to, total_offset, newgrf_offset, default_palette, false);
}
/**
* Draw tile sprite sequence in GUI with railroad specifics.
* @param total_offset Spriteoffset from normal rail to current railtype.
* @param newgrf_offset Startsprite of the Action1 to use.
*/
static inline void DrawRailTileSeqInGUI(int x, int y, const DrawTileSprites *dts, int32 total_offset, uint32 newgrf_offset, PaletteID default_palette)
{
DrawCommonTileSeqInGUI(x, y, dts, total_offset, newgrf_offset, default_palette, false);
}
/**
* Draw TTD sprite sequence on tile.
*/
static inline void DrawOrigTileSeq(const struct TileInfo *ti, const DrawTileSprites *dts, TransparencyOption to, PaletteID default_palette)
{
DrawCommonTileSeq(ti, dts, to, 0, 0, default_palette, false);
}
/**
* Draw TTD sprite sequence in GUI.
*/
static inline void DrawOrigTileSeqInGUI(int x, int y, const DrawTileSprites *dts, PaletteID default_palette)
{
DrawCommonTileSeqInGUI(x, y, dts, 0, 0, default_palette, false);
}
/**
* Draw NewGRF industrytile or house sprite layout
* @param stage Sprite inside the Action1 spritesets to use, i.e. construction stage.
*/
static inline void DrawNewGRFTileSeq(const struct TileInfo *ti, const DrawTileSprites *dts, TransparencyOption to, uint32 stage, PaletteID default_palette)
{
DrawCommonTileSeq(ti, dts, to, 0, stage, default_palette, true);
}
/**
* Draw NewGRF object in GUI
* @param stage Sprite inside the Action1 spritesets to use, i.e. construction stage.
*/
static inline void DrawNewGRFTileSeqInGUI(int x, int y, const DrawTileSprites *dts, uint32 stage, PaletteID default_palette)
{
DrawCommonTileSeqInGUI(x, y, dts, 0, stage, default_palette, true);
}
/**
* Applies PALETTE_MODIFIER_TRANSPARENT and PALETTE_MODIFIER_COLOUR to a palette entry of a sprite layout entry
* @Note for ground sprites use #GroundSpritePaletteTransform
* @Note Not useable for OTTD internal spritelayouts from table/xxx_land.h as PALETTE_MODIFIER_TRANSPARENT is only set
* when to use the default palette.
*
* @param image The sprite to draw
* @param pal The palette from the sprite layout
* @param default_pal The default recolour sprite to use (typically company colour resp. random industry/house colour)
* @return The palette to use
*/
static inline PaletteID SpriteLayoutPaletteTransform(SpriteID image, PaletteID pal, PaletteID default_pal)
{
if (HasBit(image, PALETTE_MODIFIER_TRANSPARENT) || HasBit(image, PALETTE_MODIFIER_COLOUR)) {
return (pal != 0 ? pal : default_pal);
} else {
return PAL_NONE;
}
}
/**
* Applies PALETTE_MODIFIER_COLOUR to a palette entry of a ground sprite
* @Note Not useable for OTTD internal spritelayouts from table/xxx_land.h as PALETTE_MODIFIER_TRANSPARENT is only set
* when to use the default palette.
*
* @param image The sprite to draw
* @param pal The palette from the sprite layout
* @param default_pal The default recolour sprite to use (typically company colour resp. random industry/house colour)
* @return The palette to use
*/
static inline PaletteID GroundSpritePaletteTransform(SpriteID image, PaletteID pal, PaletteID default_pal)
{
if (HasBit(image, PALETTE_MODIFIER_COLOUR)) {
return (pal != 0 ? pal : default_pal);
} else {
return PAL_NONE;
}
}
#endif /* SPRITE_H */
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