tron@2955: /* $Id$ */
tron@2955: 
tron@3145: #ifndef CLEAR_MAP_H
tron@3145: #define CLEAR_MAP_H
tron@2955: 
tron@2955: #include "macros.h"
tron@3076: #include "tile.h"
tron@2955: 
tron@2955: /* ground type, m5 bits 2...4
tron@2955:  * valid densities (bits 0...1) in comments after the enum
tron@2955:  */
tron@2955: typedef enum ClearGround {
tron@3447: 	CLEAR_GRASS  = 0, // 0-3
tron@3447: 	CLEAR_ROUGH  = 1, // 3
tron@3447: 	CLEAR_ROCKS  = 2, // 3
tron@3447: 	CLEAR_FIELDS = 3, // 3
tron@3447: 	CLEAR_SNOW   = 4, // 0-3
tron@3447: 	CLEAR_DESERT = 5  // 1,3
tron@2955: } ClearGround;
tron@2955: 
tron@2955: 
tron@3369: static inline ClearGround GetClearGround(TileIndex t)
tron@3369: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR));
tron@3369: 	return GB(_m[t].m5, 2, 3);
tron@3369: }
tron@2955: 
tron@3369: static inline bool IsClearGround(TileIndex t, ClearGround ct)
tron@3369: {
tron@3369: 	return GetClearGround(t) == ct;
tron@3369: }
tron@3369: 
tron@3369: 
tron@3369: static inline uint GetClearDensity(TileIndex t)
tron@3369: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR));
tron@3369: 	return GB(_m[t].m5, 0, 2);
tron@3369: }
tron@3369: 
tron@3369: static inline void AddClearDensity(TileIndex t, int d)
tron@3369: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR)); // XXX incomplete
tron@3369: 	_m[t].m5 += d;
tron@3369: }
tron@3369: 
tron@3369: 
tron@3369: static inline uint GetClearCounter(TileIndex t)
tron@3369: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR));
tron@3369: 	return GB(_m[t].m5, 5, 3);
tron@3369: }
tron@3369: 
tron@3369: static inline void AddClearCounter(TileIndex t, int c)
tron@3369: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR)); // XXX incomplete
tron@3369: 	_m[t].m5 += c << 5;
tron@3369: }
tron@3369: 
tron@3369: static inline void SetClearCounter(TileIndex t, uint c)
tron@3369: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR)); // XXX incomplete
tron@3369: 	SB(_m[t].m5, 5, 3, c);
tron@3369: }
tron@3369: 
tron@2955: 
tron@2955: /* Sets type and density in one go, also sets the counter to 0 */
tron@2955: static inline void SetClearGroundDensity(TileIndex t, ClearGround type, uint density)
tron@2955: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR)); // XXX incomplete
tron@2955: 	_m[t].m5 = 0 << 5 | type << 2 | density;
tron@2955: }
tron@2955: 
tron@3369: 
tron@3369: static inline uint GetFieldType(TileIndex t)
tron@3369: {
tron@3447: 	assert(GetClearGround(t) == CLEAR_FIELDS);
tron@3369: 	return GB(_m[t].m3, 0, 4);
tron@3369: }
tron@3369: 
tron@3369: static inline void SetFieldType(TileIndex t, uint f)
tron@3369: {
tron@3447: 	assert(GetClearGround(t) == CLEAR_FIELDS); // XXX incomplete
tron@3369: 	SB(_m[t].m3, 0, 4, f);
tron@3369: }
tron@3369: 
truelight@4328: static inline uint16 GetIndustryIndexOfField(TileIndex t)
truelight@4328: {
truelight@4328: 	assert(GetClearGround(t) == CLEAR_FIELDS);
truelight@4328: 	return _m[t].m2;
truelight@4328: }
truelight@4328: 
truelight@4328: static inline void SetIndustryIndexOfField(TileIndex t, uint16 i)
truelight@4328: {
truelight@4328: 	assert(GetClearGround(t) == CLEAR_FIELDS);
truelight@4328: 	_m[t].m2 = i;
truelight@4328: }
tron@2979: 
tron@2979: /* Is used by tree tiles, too */
tron@3369: static inline uint GetFenceSE(TileIndex t)
tron@3369: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR) || IsTileType(t, MP_TREES));
tron@3369: 	return GB(_m[t].m4, 2, 3);
tron@3369: }
tron@2979: 
tron@3369: static inline void SetFenceSE(TileIndex t, uint h)
tron@3369: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR) || IsTileType(t, MP_TREES)); // XXX incomplete
tron@3369: 	SB(_m[t].m4, 2, 3, h);
tron@3369: }
tron@3369: 
tron@3369: static inline uint GetFenceSW(TileIndex t)
tron@3369: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR) || IsTileType(t, MP_TREES));
tron@3369: 	return GB(_m[t].m4, 5, 3);
tron@3369: }
tron@3369: 
tron@3369: static inline void SetFenceSW(TileIndex t, uint h)
tron@3369: {
tron@3369: 	assert(IsTileType(t, MP_CLEAR) || IsTileType(t, MP_TREES)); // XXX incomplete
tron@3369: 	SB(_m[t].m4, 5, 3, h);
tron@3369: }
tron@2979: 
tron@3076: 
tron@3076: static inline void MakeClear(TileIndex t, ClearGround g, uint density)
tron@3076: {
tron@3076: 	SetTileType(t, MP_CLEAR);
tron@3076: 	SetTileOwner(t, OWNER_NONE);
tron@3076: 	_m[t].m2 = 0;
tron@3076: 	_m[t].m3 = 0;
tron@3076: 	_m[t].m4 = 0 << 5 | 0 << 2;
tron@3291: 	SetClearGroundDensity(t, g, density);
tron@3291: }
tron@3291: 
tron@3291: 
truelight@4328: static inline void MakeField(TileIndex t, uint field_type, uint16 industry)
tron@3291: {
tron@3291: 	SetTileType(t, MP_CLEAR);
tron@3291: 	SetTileOwner(t, OWNER_NONE);
truelight@4328: 	_m[t].m2 = industry;
tron@3291: 	_m[t].m3 = field_type;
tron@3291: 	_m[t].m4 = 0 << 5 | 0 << 2;
tron@3447: 	SetClearGroundDensity(t, CLEAR_FIELDS, 3);
tron@3076: }
tron@3076: 
peter1138@4666: #endif /* CLEAR_MAP_H */