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tmc/include/entity.h

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// clang-format off
#ifndef ENTITY_H
#define ENTITY_H
#include "global.h"
#include "color.h"
#include "sprite.h"
#define MAX_ENTITIES 71
/** Kinds of Entity's supported by the game. */
typedef enum {
PLAYER = 1, /**< There is only one id assigned to the Player kind.
* The player Entity shares much of its code with LTTP GBA, however the game only supports
* one player Entity active at a time, assigned to the global #gPlayerEntity.
* Works next to PlayerState to control player behavior.
*/
ENEMY = 3, /**< Can give and take damage in relation to the player.
* Most enemies call the a set of external helper functions which calculate what behavior to execute.
*/
PROJECTILE = 4, /**< May damage the player. They are typically spawned by enemies.
*/
OBJECT = 6, /**< Encapsulates any sort of prop. Generally they cannot be interacted with directly,
* but they may react to a player action or script event.
*/
NPC = 7, /**< May be interacted with by the player. Almost every NPC is assigned a script.
* NPCs have three entry points: one for the head, one for the body, and one for kinstone fusion.
*/
PLAYER_ITEM = 8, /**< Displays sprites for items outside of the inventory (check).
*/
MANAGER = 9, /**< Utility Entity's that serve as a proxy between gameplay and the engine.
* Examples: drawing clouds, ezlo hints, playing cutscenes.
* Updates independently of other entities, and does not add to maximum entity count.
*/
} EntityKind;
/** Entity flags. */
typedef enum {
ENT_DID_INIT = 0x1, /**< Graphics and other data loaded. */
ENT_SCRIPTED = 0x2, /**< Execute in a scripted environment. */
ENT_DELETED = 0x10, /**< Queue deletion next frame. */
ENT_PERSIST = 0x20, /**< Persist between rooms. */
ENT_COLLIDE = 0x80, /**< Collide with other Entity's. */
} EntityFlags;
/** Priority level to determine what events will block an Entity from updating. */
typedef enum {
PRIO_MIN, /**< Default priority. */
PRIO_PLAYER, /**< Default priority for player. */
PRIO_MESSAGE, /**< Do not block during message. */
PRIO_NO_BLOCK, /**< Do not block during entity requested priority. @see RequestPriority */
PRIO_4, /**< Unused. */
PRIO_5, /**< Unused. */
PRIO_PLAYER_EVENT, /**< Do not block during special player event. */
PRIO_HIGHEST, /**< Do not block EVER. */
} Priority;
/** Animation state. */
typedef enum {
IdleNorth = 0x0, /**< Idle facing north. */
IdleEast = 0x2, /**< Idle facing east. */
IdleSouth = 0x4, /**< Idle facing south. */
IdleWest = 0x6, /**< Idle facing west. */
} AnimationState;
/** Direction. */
typedef enum {
DirectionNorth = 0x00, /**< North. */
DirectionNorthEast = 0x04, /**< North East. */
DirectionEast = 0x08, /**< East. */
DirectionSouthEast = 0x0c, /**< South East. */
DirectionSouth = 0x10, /**< South. */
DirectionSouthWest = 0x14, /**< South West. */
DirectionWest = 0x18, /**< West. */
DirectionNorthWest = 0x1c, /**< North West. */
} Direction;
typedef struct {
void* entity1;
void* entity2;
u8 filler[14];
} UnkStruct;
/**
* Hitbox structure.
*/
typedef struct {
s8 offset_x;
s8 offset_y;
u8 unk2[4];
u8 width;
u8 height;
} Hitbox;
/**
* Hitbox structure supporting depth.
*/
typedef struct {
s8 offset_x;
s8 offset_y;
u8 unknown[4];
u8 width;
u8 height;
u8 depth;
u8 unknown2[3];
} Hitbox3D;
typedef struct {
u8 b0 : 3; // 1-4 /**< set to is 4 in entity init (default/lowest?)
u8 b1 : 3; // 8
u8 b2 : 1; // 0x40
u8 b3 : 1; // 0x80
} PACKED SpritePriority;
#define GENERIC_ENTITY_FIELDS \
/*0x68*/ union SplitHWord field_0x68; \
/*0x6a*/ union SplitHWord field_0x6a; \
/*0x6c*/ union SplitHWord field_0x6c; \
/*0x6e*/ union SplitHWord field_0x6e; \
/*0x70*/ union SplitWord field_0x70; \
/*0x74*/ union SplitHWord field_0x74; \
/*0x76*/ union SplitHWord field_0x76; \
/*0x78*/ union SplitHWord field_0x78; \
/*0x7a*/ union SplitHWord field_0x7a; \
/*0x7c*/ union SplitWord field_0x7c; \
/*0x80*/ union SplitHWord field_0x80; \
/*0x82*/ union SplitHWord field_0x82; \
/*0x84*/ union SplitHWord cutsceneBeh; \
/*0x86*/ union SplitHWord field_0x86;
/**
* Container for instantiable behavior.
*/
typedef struct Entity_ {
/*0x00*/ struct Entity_* prev; /**< previous Entity */
/*0x04*/ struct Entity_* next; /**< next Entity */
/*0x08*/ u8 kind; /**< @see EntityKind */
/*0x09*/ u8 id; /**< Entity id. */
/*0x0a*/ u8 type; /**< For use internally to allow different variations. */
/*0x0b*/ u8 type2; /**< For use internally. */
/*0x0c*/ u8 action; /**< Current action. Usually used to index a function table. */
/*0x0d*/ u8 subAction; /**< Optional sub-action. */
/*0x0e*/ u8 timer; /**< General purpose timer. */
/*0x0f*/ u8 subtimer; /**< General purpose timer. */
/*0x10*/ u8 flags; /**< @see EntityFlags */
/*0x11*/ u8 updatePriority : 4; /**< Current priority. @see Priority */
/* */ u8 updatePriorityPrev : 4; /**< Priority to restore after request is over. @see RequestPriority. */
/*0x12*/ s16 spriteIndex;
/*0x14*/ u8 animationState; /**< Animation state. @see AnimationState */
/*0x15*/ u8 direction; /**< Facing direction. @see Direction */
/*0x16*/ u8 carryFlags; /**< Flags for carrying this Entity. */
/*0x17*/ u8 followerFlag; /**< Controls collisions between followers, unused. */
/*0x18*/ struct SpriteSettings {
/* */ u32 draw : 2; /**< Draw type. 0 = disabled, 1 = clip to screen, 3 = draw always */ /* 0x2 */
/* */ u32 ss2 : 1; /* 4 */
/* */ u32 ss3 : 1; /* 8 */
/* */ u32 shadow : 2; /* 0x10-0x20 */
/* */ u32 flipX : 1; /**< Flip sprite horizontally. */ /* 0x40 */
/* */ u32 flipY : 1; /**< Flip sprite vertically. */ /* 0x80 */
/* */ } PACKED spriteSettings;
/*0x19*/ struct SpriteRendering {
/* */ u32 b0 : 2; /* 1-2 */
/* */ u32 alphaBlend : 2; /* 4-8 */
/* */ u32 b2 : 2; /* 0x10 */
/* */ u32 b3 : 2; /* 0x40 */
/* */ } PACKED spriteRendering;
/*0x1a*/ union Palette {
/* */ u8 raw;
/* */ struct PaletteB {
/* */ u8 b0 : 4;
/* */ u8 b4 : 4;
/* */ } PACKED b;
/* */ } PACKED palette;
/*0x1b*/ struct SpriteOrientation {
/* */ u32 b0 : 1; /* 1 */
/* */ u32 b1 : 5; /* 0x2-0x10 */
/* */ u32 flipY : 2; /* 0x20-0x40 */
/* */ } PACKED spriteOrientation;
/*0x1c*/ u8 gustJarFlags; /**< Controls sfx and other things */
/*0x1d*/ u8 gustJarTolerance; /**< Frames needed to pull off ground. */
/*0x1e*/ u8 frameIndex;
/*0x1f*/ u8 lastFrameIndex;
/*0x20*/ s32 zVelocity; /**< Z axis speed, measured in px/frame */
/*0x24*/ s16 speed; /**< Magnitude of speed. */
/*0x26*/ u8 spriteAnimation[3];
/*0x29*/ SpritePriority spritePriority;
/*0x2a*/ u16 collisions; /**< Collision flags for each direction. */
/*0x2c*/ union SplitWord x; /**< X position, fixed point Q16.16. */
/*0x30*/ union SplitWord y; /**< Y position, fixed point Q16.16. */
/*0x34*/ union SplitWord z; /**< Z position, fixed point Q16.16. */
/*0x38*/ u8 collisionLayer; /**< Collision layer. */
/*0x39*/ s8 interactType;
/*0x3a*/ u8 gustJarState; /**< 4: grabbed by GustJar */
/*0x3b*/ u8 flags2; /**< Debug visualization related? */
/*0x3c*/ u8 collisionFlags; /**< Controls collision modes. */
/*0x3d*/ s8 iframes; /**< Invulnerability frames. */
/*0x3e*/ u8 knockbackDirection; /**< Direction of knockback. */
/*0x3f*/ u8 hitType; /**< Behavior as a collision sender. */
/*0x40*/ u8 hurtType; /**< Behavior as a collision receiver. */
/*0x41*/ u8 contactFlags; /**< Information about collision contact. */
/*0x42*/ u8 knockbackDuration; /**< Duration of knockback. */
/*0x43*/ u8 confusedTime; /**< Frames that this Entity is confused. */
/*0x44*/ u8 damage; /**< Damage this Entity inflicts. */
/*0x45*/ u8 health; /**< Health of this Entity. */
/*0x46*/ u16 knockbackSpeed; /**< How fast this Entity is knocked back. */
/*0x48*/ Hitbox* hitbox; /**< Hitbox associated with this Entity. */
/*0x4c*/ struct Entity_* contactedEntity;
/*0x50*/ struct Entity_* parent; /**< Parent Entity. Sometimes points to associated data. */
/*0x54*/ struct Entity_* child; /**< Child Entity. Sometimes points to associated data. */
/*0x58*/ u8 animIndex;
/*0x59*/ u8 frameDuration;
/*0x5a*/ u8 frame;
/*0x5b*/ u8 frameSpriteSettings;
/*0x5c*/ void* animPtr;
/*0x60*/ u16 spriteVramOffset;
/*0x62*/ u8 spriteOffsetX;
/*0x63*/ s8 spriteOffsetY;
/*0x64*/ void* myHeap; /**< Heap data allocated with #zMalloc. */
#ifndef NENT_DEPRECATED
GENERIC_ENTITY_FIELDS
#endif
} Entity;
typedef struct {
GENERIC_ENTITY_FIELDS
} GenericEntityData;
typedef struct {
/*0x00*/ Entity base;
GENERIC_ENTITY_FIELDS
} GenericEntity;
/**
* Entity linked list structure.
*/
typedef struct LinkedList {
Entity* last;
Entity* first;
} LinkedList;
typedef void(EntityAction)(Entity*);
typedef void (*EntityActionPtr)(Entity*);
typedef void (*const* EntityActionArray)(Entity*);
/**
* Draw an Entity.
*
* @param entity Entity to be drawn.
*/
void DrawEntity(Entity* entity);
void InitializeAnimation(Entity* entity, u32 animIndex);
void InitAnimationForceUpdate(Entity* entity, u32 animIndex);
void UpdateAnimationSingleFrame(Entity* entity);
void UpdateSpriteForCollisionLayer(Entity* entity);
void GetNextFrame(Entity* entity);
u32 LoadExtraSpriteData(Entity* entity, const SpriteLoadData* spriteData);
void SetExtraSpriteFrame(Entity*, u32, u32);
void SetSpriteSubEntryOffsetData1(Entity*, u32, u32);
void SetSpriteSubEntryOffsetData2(Entity*, u32, u32);
u8* GetSpriteSubEntryOffsetDataPointer(u32, u32);
bool32 SetAffineInfo(Entity*, u32, u32, u32);
/**
* Return the direction pointing from one Entity to another.
*
* @param origin Entity to orient.
* @param target Entity to look at.
* @return Direction facing target.
*/
u32 GetFacingDirection(Entity* origin, Entity* target);
bool32 ProcessMovement0(Entity*);
/// @{
/**
* Allocate a new Entity.
*
* @return Allocated Entity or NULL if failed.
*/
Entity* GetEmptyEntity(void);
Entity* CreateEnemy(u32 id, u32 type);
Entity* CreateNPC(u32 id, u32 type, u32 type2);
Entity* CreateObject(u32 id, u32 type, u32 type2);
Entity* CreateObjectWithParent(Entity* parent, u32 id, u32 type, u32 type2);
Entity* CreateItemGetEntity(void);
Entity* CreateFx(Entity* parent, u32 type, u32 type2);
/// @}
/**
* Iteratively execute every Entity. Call once per frame.
*/
void UpdateEntities(void);
/**
* Iteratively execute every Manager. Call once per frame.
*/
void UpdateManagers(void);
/**
* Delete a manager.
*
* @param manager Manager to delete.
*/
void DeleteManager(void* manager);
/**
* Delete Manager or Entity.
*
* @param entity Entity or Manager to be deleted.
*/
void DeleteEntityAny(Entity* entity);
/**
* Erase all Entity's.
*/
void EraseAllEntities(void);
/**
* Delete the Entity currently in execution.
*
* @see UpdateContext
*/
void DeleteThisEntity(void);
/**
* Delete an Entity.
*
* @param entity Entity to delete.
*/
void DeleteEntity(Entity* entity);
/**
* Add an Entity to the end of a LinkedList.
*
* @param entity Entity to add.
* @param listIndex Target LinkedList.
*/
void AppendEntityToList(Entity* entity, u32 listIndex);
/**
* Add an Entity to the start of a LinkedList.
*
* @param entity Entity to add.
* @param listIndex Target LinkedList.
*/
void PrependEntityToList(Entity* entity, u32 listIndex);
/**
* Find an Entity for a given kind and id, and LinkedList.
*
* @return Entity* First result or NULL if none found.
*/
Entity* FindEntityByID(u32 kind, u32 id, u32 listIndex);
/**
* Search all lists for an Entity of same kind and id.
*
* @return Entity* First result or NULL if none found.
*/
Entity* DeepFindEntityByID(u32 kind, u32 id);
/**
* Search all lists for Entity of same kind and id.
*
* @return bool32 Duplicate was found.
*/
bool32 EntityHasDuplicateID(Entity* entity);
/**
* Find an Entity of same kind and id in LinkedList.
*
* @return Entity* First result or NULL if none found.
*/
Entity* FindNextDuplicateID(Entity* entity, int listIndex);
/**
* Find an Entity with full identifiers.
*
* @return Entity* First result or NULL if none found.
*/
Entity* FindEntity(u32 kind, u32 id, u32 listIndex, u32 type, u32 type2);
/**
* Set the default priority for entity.
*
* @param entity Entity to set the priority of.
* @param prio #Priority level.
*/
void SetDefaultPriority(Entity* entity, u32 prio);
/**
* Check if entity will be deleted next frame.
*/
bool32 EntityIsDeleted(Entity* entity);
/**
* Check if system or entity is blocking updates.
*/
bool32 AnyPrioritySet(void);
/**
* Set the minimum Entity priority.
*
* @param prio Minimum #Priority.
* @return Success.
*/
s32 SetMinPriority(u32 prio);
/**
* Request indefinite priority for an Entity.
*
* @param entity Entity requesting priority.
*/
void RequestPriority(Entity* entity);
/**
* Revoke priority from an Entity.
*
* @param entity Entity which requested priority.
*/
void RevokePriority(Entity* entity);
/**
* Request update priority over other Entity's for a period of time.
*
* @param entity Entity requesting priority.
* @param time Number of frames.
*/
void RequestPriorityDuration(Entity* entity, u32 time);
/**
* Set the remaining frames of Entity priority.
*
* @param time Number of frames.
*/
void SetPriorityTimer(u32 time);
/**
* Request priority over player update.
*
* @param entity Entity requesting priority.
*/
void RequestPriorityOverPlayer(Entity* entity);
/**
* Revoke priority over player update.
*
* @param entity Entity which requested priority.
*/
void RevokePriorityOverPlayer(Entity* entity);
/**
* Reset a priority event requested by an Entity.
*/
void ResetEntityPriority(void);
/**
* Set entity and system priority to #PRIO_PLAYER_EVENT.
*/
void SetPlayerEventPriority(void);
/**
* Reset entity and system priority to defaults.
*/
void ResetPlayerEventPriority(void);
/**
* Set system priority to #PRIO_PLAYER_EVENT.
*/
void SetRoomReloadPriority(void);
/**
* Set system priority to #PRIO_HIGHEST.
*/
void SetInitializationPriority(void);
/**
* Reset the system update priority.
*/
void ResetSystemPriority(void);
void sub_0805E958(void);
/**
* LinkedList's which point to allocate Entities.
* These work together with Entity.prev and Entity.next fields
* to allow the iteration of all Entity's.
*/
extern LinkedList gEntityLists[9];
extern Entity gItemGetEntities[7];
typedef struct {
u8 unk_0;
u8 unk_1;
u8 count;
u8 unk_3;
u16 unk_4;
u8 unk_6[2];
Entity* unk_8;
Entity* unk_c[0x20];
} CarriedEntity;
extern CarriedEntity gCarriedEntity;
/**
* Current number of entities.
* @see Entity
*/
extern u8 gEntCount;
/**
* Current number of managers.
* @see Manager
*/
extern u8 gManagerCount;
#define COLLISION_OFF(entity) ((entity)->flags &= ~ENT_COLLIDE)
#define COLLISION_ON(entity) ((entity)->flags |= ENT_COLLIDE)
#define ANIM_DONE (1 << 7) /* invalid frame index */
/** @name Tile Macros */ /// @{
#define TILE(x, y) (((((x)-gRoomControls.origin_x) >> 4) & 0x3F) | ((((y)-gRoomControls.origin_y) >> 4) & 0x3F) << 6)
#define TILE_POS(x, y) (x + (y << 6))
#define TILE_POS_X_COMPONENT 0x3f
#define TILE_POS_Y_COMPONENT 0xfc0
#define COORD_TO_TILE(entity) TILE((entity)->x.HALF.HI, (entity)->y.HALF.HI)
#define COORD_TO_TILE_OFFSET(entity, xOff, yOff) TILE((entity)->x.HALF.HI - (xOff), (entity)->y.HALF.HI - (yOff))
/// @}
/** @name Animation State Macros */ ///@{
#define AnimationStateFlip90(expr) ((expr) ^ 0x2)
#define AnimationStateFlip180(expr) ((expr) ^ 0x4)
#define AnimationStateIdle(expr) ((expr)&0x6)
#define AnimationStateWalk(expr) ((expr)&0xe)
///@}
/** @name Direction Macros */ ///@{
#define DirectionRound(expr) ((expr)&0x18)
#define DirectionRoundUp(expr) DirectionRound((expr) + 4)
#define DirectionIsHorizontal(expr) ((expr) & 0x08)
#define DirectionIsVertical(expr) ((expr) & 0x10)
#define DirectionTurnAround(expr) ((expr) ^ 0x10)
#define DirectionToAnimationState(expr) (DirectionRoundUp(expr) >> 3)
#define DirectionFromAnimationState(expr) ((expr) << 3)
#define DirectionNormalize(expr) ((expr) & 0x1f)
#define Direction8Round(expr) ((expr) & 0x1c)
#define Direction8RoundUp(expr) Direction8Round((expr) + 2)
#define Direction8TurnAround(expr) (Direction8RoundUp(expr) ^ 0x10)
#define Direction8ToAnimationState(expr) ((expr) >> 2)
#define Direction8FromAnimationState(expr) ((expr) << 2)
///@}
#endif // ENTITY_H
// clang-format on
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