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Target System Docs: Actor Searching [3/?] (#2120)
* document target actor searching * missed something * review * mzx review
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3 changed files with 120 additions and 68 deletions
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@ -431,7 +431,7 @@ Actor* Actor_SpawnAsChild(ActorContext* actorCtx, Actor* parent, PlayState* play
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void Actor_SpawnTransitionActors(PlayState* play, ActorContext* actorCtx);
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Actor* Actor_SpawnEntry(ActorContext* actorCtx, ActorEntry* actorEntry, PlayState* play);
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Actor* Actor_Delete(ActorContext* actorCtx, Actor* actor, PlayState* play);
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Actor* func_80032AF0(PlayState* play, ActorContext* actorCtx, Actor** actorPtr, Player* player);
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Actor* Target_FindTargetableActor(PlayState* play, ActorContext* actorCtx, Actor** targetableActorP, Player* player);
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Actor* Actor_Find(ActorContext* actorCtx, s32 actorId, s32 actorCategory);
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void Enemy_StartFinishingBlow(PlayState* play, Actor* actor);
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void BodyBreak_Alloc(BodyBreak* bodyBreak, s32 count, PlayState* play);
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@ -460,7 +460,7 @@ void func_8002C7BC(TargetContext* targetCtx, Player* player, Actor* actorArg, Pl
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(player->controlStickDirections[player->controlStickDataIndex] == PLAYER_STICK_DIR_BACKWARD)) {
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targetCtx->arrowHoverActor = NULL;
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} else {
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func_80032AF0(play, &play->actorCtx, &unkActor, player);
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Target_FindTargetableActor(play, &play->actorCtx, &unkActor, player);
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targetCtx->arrowHoverActor = unkActor;
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}
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@ -1542,25 +1542,36 @@ PosRot Actor_GetWorldPosShapeRot(Actor* actor) {
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return worldPosRot;
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}
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f32 func_8002EFC0(Actor* actor, Player* player, s16 arg2) {
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s16 yawTemp = (s16)(actor->yawTowardsPlayer - 0x8000) - arg2;
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/**
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* Returns the squared xyz distance from the actor to Player.
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* This distance will be weighted if Player is already targeting another actor.
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*/
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f32 Target_WeightedDistToPlayerSq(Actor* actor, Player* player, s16 playerShapeYaw) {
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s16 yawTemp = (s16)(actor->yawTowardsPlayer - 0x8000) - playerShapeYaw;
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s16 yawTempAbs = ABS(yawTemp);
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if (player->unk_664 != NULL) {
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if ((yawTempAbs > 0x4000) || (actor->flags & ACTOR_FLAG_27)) {
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return MAXFLOAT;
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} else {
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f32 ret =
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f32 adjDistSq;
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// The distance returned is scaled down as the player faces more toward the actor.
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// At 90 degrees, 100% of the original distance will be returned.
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// This scales down linearly to 60% when facing 0 degrees away.
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adjDistSq =
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actor->xyzDistToPlayerSq - actor->xyzDistToPlayerSq * 0.8f * ((0x4000 - yawTempAbs) * (1.0f / 0x8000));
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return ret;
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return adjDistSq;
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}
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}
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// An actor will not be considered targetable if Player is facing more than ~60 degrees away
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if (yawTempAbs > 0x2AAA) {
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return MAXFLOAT;
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}
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// Unweighted distSq
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return actor->xyzDistToPlayerSq;
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}
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@ -1572,14 +1583,17 @@ typedef struct TargetRangeParams {
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#define TARGET_RANGE(range, leash) \
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{ SQ(range), (f32)range / leash }
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TargetRangeParams D_80115FF8[] = {
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TargetRangeParams sTargetRanges[] = {
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TARGET_RANGE(70, 140), TARGET_RANGE(170, 255), TARGET_RANGE(280, 5600), TARGET_RANGE(350, 525),
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TARGET_RANGE(700, 1050), TARGET_RANGE(1000, 1500), TARGET_RANGE(100, 105.36842), TARGET_RANGE(140, 163.33333),
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TARGET_RANGE(240, 576), TARGET_RANGE(280, 280000),
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};
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u32 func_8002F090(Actor* actor, f32 arg1) {
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return arg1 < D_80115FF8[actor->targetMode].rangeSq;
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/**
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* Checks if an actor at distance `distSq` is inside the range specified by its targetMode
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*/
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u32 Target_ActorIsInRange(Actor* actor, f32 distSq) {
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return distSq < sTargetRanges[actor->targetMode].rangeSq;
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}
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s32 func_8002F0C8(Actor* actor, Player* player, s32 flag) {
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@ -1598,7 +1612,7 @@ s32 func_8002F0C8(Actor* actor, Player* player, s32 flag) {
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dist = actor->xyzDistToPlayerSq;
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}
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return !func_8002F090(actor, D_80115FF8[actor->targetMode].leashScale * dist);
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return !Target_ActorIsInRange(actor, sTargetRanges[actor->targetMode].leashScale * dist);
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}
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return false;
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@ -3102,58 +3116,87 @@ Actor* Actor_Delete(ActorContext* actorCtx, Actor* actor, PlayState* play) {
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return newHead;
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}
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int func_80032880(PlayState* play, Actor* actor) {
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s16 sp1E;
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s16 sp1C;
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/**
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* Checks that an actor is on-screen enough to be considered targetable.
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*
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* Note that the screen bounds checks are larger than the actual screen region
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* to give room for error.
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*/
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int Target_InTargetableScreenRegion(PlayState* play, Actor* actor) {
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s16 x;
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s16 y;
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Actor_GetScreenPos(play, actor, &sp1E, &sp1C);
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Actor_GetScreenPos(play, actor, &x, &y);
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return (sp1E > -20) && (sp1E < 340) && (sp1C > -160) && (sp1C < 400);
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#define X_LEEWAY 20
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#define Y_LEEWAY 160
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return (x > 0 - X_LEEWAY) && (x < SCREEN_WIDTH + X_LEEWAY) && (y > 0 - Y_LEEWAY) && (y < SCREEN_HEIGHT + Y_LEEWAY);
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}
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Actor* D_8015BBE8;
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Actor* D_8015BBEC;
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f32 D_8015BBF0;
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f32 sbgmEnemyDistSq;
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s32 D_8015BBF8;
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s16 D_8015BBFC;
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Actor* sNearestTargetableActor;
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Actor* sPrioritizedTargetableActor;
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f32 sNearestTargetableActorDistSq;
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f32 sBgmEnemyDistSq;
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s32 sHighestTargetablePriority;
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s16 sTargetPlayerRotY;
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void func_800328D4(PlayState* play, ActorContext* actorCtx, Player* player, u32 actorCategory) {
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f32 var;
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/**
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* Search for targetable actors within the specified category.
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*
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* For an actor to be considered targetable it needs to:
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* - Have a non-NULL update function (still active)
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* - Not be player (this is technically a redundant check because the PLAYER category is never searched)
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* - Be targetable (specified by ACTOR_FLAG_0)
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* - Not be the already targeted actor
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* - Be the closest targetable actor found so far
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* - Be within range, specified by targetMode
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* - Be roughly on-screen
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* - Not be blocked by a surface
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*
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* If an actor has a priority value set and the value is the lowest found so far, it will be set as the prioritized
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* targetable actor. Otherwise, it is set as the nearest targetable actor.
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*
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* This function is expected to be called with almost every actor category in each cycle. On a new cycle its global
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* variables must be reset by the caller, otherwise the information of the previous cycle will be retained.
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*/
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void Target_FindTargetableActorInCategory(PlayState* play, ActorContext* actorCtx, Player* player, u32 actorCategory) {
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f32 distSq;
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Actor* actor;
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Actor* sp84;
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CollisionPoly* sp80;
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s32 sp7C;
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Vec3f sp70;
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Actor* unk_664;
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CollisionPoly* poly;
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s32 bgId;
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Vec3f lineTestResultPos;
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actor = actorCtx->actorLists[actorCategory].head;
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sp84 = player->unk_664;
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unk_664 = player->unk_664;
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while (actor != NULL) {
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if ((actor->update != NULL) && ((Player*)actor != player) && CHECK_FLAG_ALL(actor->flags, ACTOR_FLAG_0)) {
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// This block below is for determining the closest actor to player in determining the volume
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// used while playing enemy background music
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// Enemy background music actor is updated here, despite not being too related to the Target system
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if ((actorCategory == ACTORCAT_ENEMY) && CHECK_FLAG_ALL(actor->flags, ACTOR_FLAG_0 | ACTOR_FLAG_2) &&
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(actor->xyzDistToPlayerSq < SQ(500.0f)) && (actor->xyzDistToPlayerSq < sbgmEnemyDistSq)) {
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(actor->xyzDistToPlayerSq < SQ(500.0f)) && (actor->xyzDistToPlayerSq < sBgmEnemyDistSq)) {
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actorCtx->targetCtx.bgmEnemy = actor;
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sbgmEnemyDistSq = actor->xyzDistToPlayerSq;
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sBgmEnemyDistSq = actor->xyzDistToPlayerSq;
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}
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if (actor != sp84) {
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var = func_8002EFC0(actor, player, D_8015BBFC);
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if ((var < D_8015BBF0) && func_8002F090(actor, var) && func_80032880(play, actor) &&
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(!BgCheck_CameraLineTest1(&play->colCtx, &player->actor.focus.pos, &actor->focus.pos, &sp70, &sp80,
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1, 1, 1, 1, &sp7C) ||
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SurfaceType_IsIgnoredByProjectiles(&play->colCtx, sp80, sp7C))) {
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if (actor != unk_664) {
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distSq = Target_WeightedDistToPlayerSq(actor, player, sTargetPlayerRotY);
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if ((distSq < sNearestTargetableActorDistSq) && Target_ActorIsInRange(actor, distSq) &&
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Target_InTargetableScreenRegion(play, actor) &&
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(!BgCheck_CameraLineTest1(&play->colCtx, &player->actor.focus.pos, &actor->focus.pos,
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&lineTestResultPos, &poly, true, true, true, true, &bgId) ||
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SurfaceType_IsIgnoredByProjectiles(&play->colCtx, poly, bgId))) {
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if (actor->targetPriority != 0) {
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if (actor->targetPriority < D_8015BBF8) {
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D_8015BBEC = actor;
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D_8015BBF8 = actor->targetPriority;
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// Lower values are considered higher priority
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if (actor->targetPriority < sHighestTargetablePriority) {
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sPrioritizedTargetableActor = actor;
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sHighestTargetablePriority = actor->targetPriority;
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}
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} else {
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D_8015BBE8 = actor;
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D_8015BBF0 = var;
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sNearestTargetableActor = actor;
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sNearestTargetableActorDistSq = distSq;
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}
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}
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}
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@ -3163,45 +3206,54 @@ void func_800328D4(PlayState* play, ActorContext* actorCtx, Player* player, u32
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}
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}
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u8 D_801160A0[] = {
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u8 sTargetableCategorySearchOrder[] = {
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ACTORCAT_BOSS, ACTORCAT_ENEMY, ACTORCAT_BG, ACTORCAT_EXPLOSIVE, ACTORCAT_NPC, ACTORCAT_ITEMACTION,
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ACTORCAT_CHEST, ACTORCAT_SWITCH, ACTORCAT_PROP, ACTORCAT_MISC, ACTORCAT_DOOR, ACTORCAT_SWITCH,
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};
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Actor* func_80032AF0(PlayState* play, ActorContext* actorCtx, Actor** actorPtr, Player* player) {
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/**
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* Search for the nearest targetable actor by iterating through most actor categories.
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* See `Target_FindTargetableActorInCategory` for more details on search criteria.
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*
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* The actor found is stored in the `targetableActorP` parameter, which is also returned.
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* It may be NULL if no actor that fulfills the criteria is found.
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*/
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Actor* Target_FindTargetableActor(PlayState* play, ActorContext* actorCtx, Actor** targetableActorP, Player* player) {
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s32 i;
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u8* entry;
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u8* category;
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D_8015BBE8 = D_8015BBEC = NULL;
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D_8015BBF0 = sbgmEnemyDistSq = MAXFLOAT;
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D_8015BBF8 = 0x7FFFFFFF;
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sNearestTargetableActor = sPrioritizedTargetableActor = NULL;
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sNearestTargetableActorDistSq = sBgmEnemyDistSq = MAXFLOAT;
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sHighestTargetablePriority = INT32_MAX;
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if (!Player_InCsMode(play)) {
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entry = &D_801160A0[0];
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category = &sTargetableCategorySearchOrder[0];
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actorCtx->targetCtx.bgmEnemy = NULL;
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D_8015BBFC = player->actor.shape.rot.y;
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sTargetPlayerRotY = player->actor.shape.rot.y;
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// Search the first 3 actor categories first for a targetable actor
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// These are Boss, Enemy, and Bg, in order.
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for (i = 0; i < 3; i++) {
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func_800328D4(play, actorCtx, player, *entry);
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entry++;
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Target_FindTargetableActorInCategory(play, actorCtx, player, *category);
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category++;
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}
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if (D_8015BBE8 == NULL) {
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for (; i < ARRAY_COUNT(D_801160A0); i++) {
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func_800328D4(play, actorCtx, player, *entry);
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entry++;
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// If no actor in the above categories was found, then try searching in the remaining categories
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if (sNearestTargetableActor == NULL) {
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for (; i < ARRAY_COUNT(sTargetableCategorySearchOrder); i++) {
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Target_FindTargetableActorInCategory(play, actorCtx, player, *category);
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category++;
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}
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}
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}
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if (D_8015BBE8 == NULL) {
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*actorPtr = D_8015BBEC;
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if (sNearestTargetableActor == NULL) {
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*targetableActorP = sPrioritizedTargetableActor;
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} else {
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*actorPtr = D_8015BBE8;
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*targetableActorP = sNearestTargetableActor;
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}
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return *actorPtr;
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return *targetableActorP;
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}
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/**
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@ -408,8 +408,8 @@ func_8002ED80 = 0x80022B94; // type:func
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Actor_GetFocus = 0x80022CB0; // type:func
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Actor_GetWorld = 0x80022CE4; // type:func
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Actor_GetWorldPosShapeRot = 0x80022D18; // type:func
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func_8002EFC0 = 0x80022D94; // type:func
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func_8002F090 = 0x80022E64; // type:func
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Target_WeightedDistToPlayerSq = 0x80022D94; // type:func
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Target_ActorIsInRange = 0x80022E64; // type:func
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func_8002F0C8 = 0x80022EA0; // type:func
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Actor_TalkOfferAccepted = 0x80022F70; // type:func
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Actor_OfferTalkExchange = 0x80022FA0; // type:func
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@ -469,9 +469,9 @@ Actor_SpawnAsChild = 0x80025A30; // type:func
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Actor_SpawnTransitionActors = 0x80025AC8; // type:func
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Actor_SpawnEntry = 0x80025C04; // type:func
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Actor_Delete = 0x80025C88; // type:func
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func_80032880 = 0x80025D8C; // type:func
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func_800328D4 = 0x80025DE0; // type:func
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func_80032AF0 = 0x80025FFC; // type:func
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Target_InTargetableScreenRegion = 0x80025D8C; // type:func
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Target_FindTargetableActorInCategory = 0x80025DE0; // type:func
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Target_FindTargetableActor = 0x80025FFC; // type:func
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Actor_Find = 0x8002614C; // type:func
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Enemy_StartFinishingBlow = 0x8002618C; // type:func
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FaceChange_UpdateBlinking = 0x800261C4; // type:func
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