peter1138@3595: /* $Id$ */
peter1138@3595: 
celestar@9906: /** @file newgrf_spritegroup.h */
celestar@9906: 
peter1138@3595: #ifndef NEWGRF_SPRITEGROUP_H
peter1138@3595: #define NEWGRF_SPRITEGROUP_H
peter1138@3595: 
celestar@9896: #include "town.h"
peter1138@3664: 
celestar@9895: struct SpriteGroup;
peter1138@3664: 
peter1138@3668: 
peter1138@3668: /* 'Real' sprite groups contain a list of other result or callback sprite
peter1138@3668:  * groups. */
celestar@9895: struct RealSpriteGroup {
celestar@9906: 	/* Loaded = in motion, loading = not moving
celestar@9906: 	 * Each group contains several spritesets, for various loading stages */
peter1138@3664: 
celestar@9906: 	/* XXX: For stations the meaning is different - loaded is for stations
celestar@9906: 	 * with small amount of cargo whilst loading is for stations with a lot
celestar@9906: 	 * of da stuff. */
peter1138@3664: 
peter1138@3668: 	byte num_loaded;       ///< Number of loaded groups
peter1138@3668: 	byte num_loading;      ///< Number of loading groups
peter1138@4892: 	const SpriteGroup **loaded;  ///< List of loaded groups (can be SpriteIDs or Callback results)
peter1138@4892: 	const SpriteGroup **loading; ///< List of loading groups (can be SpriteIDs or Callback results)
celestar@9895: };
peter1138@3664: 
peter1138@3664: /* Shared by deterministic and random groups. */
celestar@9895: enum VarSpriteGroupScope {
peter1138@3664: 	VSG_SCOPE_SELF,
celestar@9906: 	/* Engine of consists for vehicles, city for stations. */
peter1138@3664: 	VSG_SCOPE_PARENT,
celestar@9895: };
peter1138@3664: 
celestar@9895: enum DeterministicSpriteGroupSize {
peter1138@3668: 	DSG_SIZE_BYTE,
peter1138@3668: 	DSG_SIZE_WORD,
peter1138@3668: 	DSG_SIZE_DWORD,
celestar@9895: };
peter1138@3664: 
celestar@9895: enum DeterministicSpriteGroupAdjustType {
peter1138@3668: 	DSGA_TYPE_NONE,
peter1138@3668: 	DSGA_TYPE_DIV,
peter1138@3668: 	DSGA_TYPE_MOD,
celestar@9895: };
peter1138@3664: 
celestar@9895: enum DeterministicSpriteGroupAdjustOperation {
celestar@9906: 	DSGA_OP_ADD,  ///< a + b
celestar@9906: 	DSGA_OP_SUB,  ///< a - b
celestar@9906: 	DSGA_OP_SMIN, ///< (signed) min(a, b)
celestar@9906: 	DSGA_OP_SMAX, ///< (signed) max(a, b)
celestar@9906: 	DSGA_OP_UMIN, ///< (unsigned) min(a, b)
celestar@9906: 	DSGA_OP_UMAX, ///< (unsigned) max(a, b)
celestar@9906: 	DSGA_OP_SDIV, ///< (signed) a / b
celestar@9906: 	DSGA_OP_SMOD, ///< (signed) a % b
celestar@9906: 	DSGA_OP_UDIV, ///< (unsigned) a / b
celestar@9906: 	DSGA_OP_UMOD, ///< (unsigned) a & b
celestar@9906: 	DSGA_OP_MUL,  ///< a * b
celestar@9906: 	DSGA_OP_AND,  ///< a & b
celestar@9906: 	DSGA_OP_OR,   ///< a | b
celestar@9906: 	DSGA_OP_XOR,  ///< a ^ b
celestar@9895: };
peter1138@3668: 
peter1138@3668: 
celestar@9895: struct DeterministicSpriteGroupAdjust {
peter1138@3668: 	DeterministicSpriteGroupAdjustOperation operation;
peter1138@3668: 	DeterministicSpriteGroupAdjustType type;
peter1138@3668: 	byte variable;
peter1138@3668: 	byte parameter; ///< Used for variables between 0x60 and 0x7F inclusive.
peter1138@3668: 	byte shift_num;
peter1138@3668: 	uint32 and_mask;
peter1138@3668: 	uint32 add_val;
peter1138@3668: 	uint32 divmod_val;
maedhros@5868: 	const SpriteGroup *subroutine;
celestar@9895: };
peter1138@3668: 
peter1138@3668: 
celestar@9895: struct DeterministicSpriteGroupRange {
peter1138@4892: 	const SpriteGroup *group;
peter1138@3668: 	uint32 low;
peter1138@3668: 	uint32 high;
celestar@9895: };
peter1138@3668: 
peter1138@3664: 
celestar@9895: struct DeterministicSpriteGroup {
peter1138@3664: 	VarSpriteGroupScope var_scope;
peter1138@3668: 	DeterministicSpriteGroupSize size;
peter1138@3668: 	byte num_adjusts;
peter1138@3664: 	byte num_ranges;
peter1138@3668: 	DeterministicSpriteGroupAdjust *adjusts;
peter1138@3664: 	DeterministicSpriteGroupRange *ranges; // Dynamically allocated
peter1138@3664: 
celestar@9906: 	/* Dynamically allocated, this is the sole owner */
peter1138@4892: 	const SpriteGroup *default_group;
celestar@9895: };
peter1138@3664: 
celestar@9895: enum RandomizedSpriteGroupCompareMode {
peter1138@3664: 	RSG_CMP_ANY,
peter1138@3664: 	RSG_CMP_ALL,
celestar@9895: };
peter1138@3664: 
celestar@9895: struct RandomizedSpriteGroup {
celestar@9906: 	VarSpriteGroupScope var_scope;  ///< Take this object:
peter1138@3664: 
celestar@9906: 	RandomizedSpriteGroupCompareMode cmp_mode; ///< Check for these triggers:
peter1138@3664: 	byte triggers;
peter1138@3664: 
celestar@9906: 	byte lowest_randbit; ///< Look for this in the per-object randomized bitmask:
celestar@9906: 	byte num_groups; ///< must be power of 2
peter1138@3664: 
celestar@9906: 	const SpriteGroup **groups; ///< Take the group with appropriate index:
celestar@9895: };
peter1138@3664: 
peter1138@3668: 
peter1138@3668: /* This contains a callback result. A failed callback has a value of
peter1138@3668:  * CALLBACK_FAILED */
celestar@9895: struct CallbackResultSpriteGroup {
peter1138@3664: 	uint16 result;
celestar@9895: };
peter1138@3664: 
peter1138@3668: 
peter1138@3668: /* A result sprite group returns the first SpriteID and the number of
peter1138@3668:  * sprites in the set */
celestar@9895: struct ResultSpriteGroup {
peter1138@3668: 	SpriteID sprite;
peter1138@3668: 	byte num_sprites;
celestar@9895: };
peter1138@3664: 
celestar@9896: struct TileLayoutSpriteGroup {
celestar@9906: 	byte num_sprites; ///< Number of sprites in the spriteset, used for loading stages
celestar@9896: 	struct DrawTileSprites *dts;
celestar@9896: };
celestar@9896: 
peter1138@3668: /* List of different sprite group types */
celestar@9895: enum SpriteGroupType {
peter1138@3664: 	SGT_INVALID,
peter1138@3664: 	SGT_REAL,
peter1138@3664: 	SGT_DETERMINISTIC,
peter1138@3664: 	SGT_RANDOMIZED,
peter1138@3664: 	SGT_CALLBACK,
peter1138@3664: 	SGT_RESULT,
celestar@9896: 	SGT_TILELAYOUT,
celestar@9895: };
peter1138@3664: 
peter1138@3668: /* Common wrapper for all the different sprite group types */
peter1138@3664: struct SpriteGroup {
peter1138@3664: 	SpriteGroupType type;
peter1138@3664: 
peter1138@3664: 	union {
peter1138@3664: 		RealSpriteGroup real;
peter1138@3664: 		DeterministicSpriteGroup determ;
peter1138@3664: 		RandomizedSpriteGroup random;
peter1138@3664: 		CallbackResultSpriteGroup callback;
peter1138@3664: 		ResultSpriteGroup result;
celestar@9896: 		TileLayoutSpriteGroup layout;
peter1138@3664: 	} g;
peter1138@3664: };
peter1138@3664: 
peter1138@3664: 
celestar@9895: SpriteGroup *AllocateSpriteGroup();
celestar@9895: void InitializeSpriteGroupPool();
peter1138@3595: 
peter1138@3677: 
celestar@9895: struct ResolverObject {
peter1138@3724: 	uint16 callback;
peter1138@3677: 	uint32 callback_param1;
peter1138@3677: 	uint32 callback_param2;
peter1138@3677: 
peter1138@3677: 	byte trigger;
peter1138@3677: 	uint32 last_value;
peter1138@3677: 	uint32 reseed;
peter1138@3677: 	VarSpriteGroupScope scope;
peter1138@3677: 
peter1138@4056: 	bool info_view; ///< Indicates if the item is being drawn in an info window
peter1138@4056: 
peter1138@3677: 	union {
peter1138@3677: 		struct {
peter1138@3677: 			const struct Vehicle *self;
peter1138@3677: 			const struct Vehicle *parent;
peter1138@4057: 			EngineID self_type;
peter1138@3677: 		} vehicle;
peter1138@3677: 		struct {
peter1138@3677: 			TileIndex tile;
peter1138@3677: 			const struct Station *st;
peter1138@3677: 			const struct StationSpec *statspec;
peter1138@4817: 			CargoID cargo_type;
peter1138@3677: 		} station;
celestar@9896: 		struct {
celestar@9896: 			TileIndex tile;
celestar@9896: 			Town *town;
celestar@9896: 			HouseID house_id;
celestar@9896: 		} house;
celestar@9906: 		struct {
celestar@9906: 			const struct CargoSpec *cs;
celestar@9906: 		} cargo;
peter1138@3720: 	} u;
peter1138@3677: 
peter1138@3677: 	uint32 (*GetRandomBits)(const struct ResolverObject*);
peter1138@3677: 	uint32 (*GetTriggers)(const struct ResolverObject*);
peter1138@3677: 	void (*SetTriggers)(const struct ResolverObject*, int);
peter1138@3893: 	uint32 (*GetVariable)(const struct ResolverObject*, byte, byte, bool*);
peter1138@3734: 	const SpriteGroup *(*ResolveReal)(const struct ResolverObject*, const SpriteGroup*);
celestar@9895: };
peter1138@3677: 
peter1138@3677: 
peter1138@3677: /* Base sprite group resolver */
peter1138@3677: const SpriteGroup *Resolve(const SpriteGroup *group, ResolverObject *object);
peter1138@3677: 
peter1138@3677: 
peter1138@3595: #endif /* NEWGRF_SPRITEGROUP_H */