Implement FakeObjects (Just poles for now)

src/FakeObject.c

@@ -0,0 +1,170 @@
+//
+// Created by nepushiro on 5/29/26.
+//
+
+#include "FakeObject.h"
+
+#include <string.h>
+
+#include "decomp/global_state.h"
+#include "decomp/engine/math_util.h"
+#include "decomp/game/interaction.h"
+#include "decomp/game/object_stuff.h"
+#include "decomp/include/object_fields.h"
+#include "libsm64.h"
+#include <stdint.h>
+#include <stdbool.h>
+
+void fake_object_init(struct FakeObject *fake, float x, float y, float z)
+{
+    memset(fake, 0, sizeof(*fake));
+
+    struct Object *obj = &fake->object;
+    obj->activeFlags = ACTIVE_FLAG_ACTIVE | ACTIVE_FLAG_UNK8;
+    obj->parentObj = NULL;
+    obj->prevObj = NULL;
+    obj->collidedObjInteractTypes = 0;
+    obj->numCollidedObjs = 0;
+
+    for (s32 i = 0; i < 0x50; i++)
+    {
+        #ifdef _WIN32
+        obj->rawData.asS32[i] = 0;
+        #endif
+        #ifdef _WIN64
+        obj->ptrData.asVoidPtr[i] = NULL;
+        #endif
+    }
+
+    obj->unused1 = 0;
+    obj->bhvStackIndex = 0;
+    obj->bhvDelayTimer = 0;
+
+    obj->hitboxRadius = 50.0f;
+    obj->hitboxHeight = 100.0f;
+    obj->hurtboxRadius = 0.0f;
+    obj->hurtboxHeight = 0.0f;
+    obj->hitboxDownOffset = 0.0f;
+    obj->unused2 = 0;
+
+    obj->platform = NULL;
+    obj->collisionData = NULL;
+    obj->oIntangibleTimer = -1;
+    obj->oDamageOrCoinValue = 0;
+    obj->oHealth = 2048;
+
+    obj->oCollisionDistance = 1000.0f;
+    obj->oDrawingDistance = 4000.0f;
+
+    mtxf_identity(obj->transform);
+
+    obj->respawnInfoType = RESPAWN_INFO_TYPE_NULL;
+    obj->respawnInfo = NULL;
+
+    obj->oDistanceToMario = 19000.0f;
+    obj->oRoom = -1;
+    obj->oInteractType = 0;
+    obj->oInteractionSubtype = 0;
+    obj->oHeldState = 0;
+    obj->oAction = 0;
+
+    obj->header.gfx.node.flags |= GRAPH_RENDER_ACTIVE;
+    obj->header.gfx.node.flags |= GRAPH_RENDER_INVISIBLE;
+    obj->header.gfx.node.flags &= ~GRAPH_RENDER_BILLBOARD;
+    obj->header.gfx.pos[0] = x;
+    obj->header.gfx.pos[1] = y;
+    obj->header.gfx.pos[2] = z;
+    obj->header.gfx.angle[0] = 0;
+    obj->header.gfx.angle[1] = 0;
+    obj->header.gfx.angle[2] = 0;
+    obj->header.gfx.throwMatrix = NULL;
+    obj->header.gfx.sharedChild = NULL;
+    obj->header.gfx.animInfo.curAnim = NULL;
+    obj->header.gfx.animInfo.animID = 0;
+    obj->header.gfx.animInfo.animFrame = 0;
+    obj->header.gfx.animInfo.animTimer = 0;
+
+    obj->oPosX = x;
+    obj->oPosY = y;
+    obj->oPosZ = z;
+    obj->oMoveAnglePitch = 0;
+    obj->oMoveAngleYaw = 0;
+    obj->oMoveAngleRoll = 0;
+    obj->oFaceAnglePitch = 0;
+    obj->oFaceAngleYaw = 0;
+    obj->oFaceAngleRoll = 0;
+}
+
+void fake_object_sync_position(struct FakeObject *fake)
+{
+    struct Object *obj = &fake->object;
+    obj->header.gfx.pos[0] = obj->oPosX;
+    obj->header.gfx.pos[1] = obj->oPosY;
+    obj->header.gfx.pos[2] = obj->oPosZ;
+}
+
+bool fake_object_overlaps_mario(struct FakeObject *fake, struct MarioState *m)
+{
+    struct Object *obj = &fake->object;
+    float dx = obj->oPosX - m->pos[0];
+    float dz = obj->oPosZ - m->pos[2];
+    float radius = obj->hitboxRadius;
+    float top = obj->oPosY + obj->hitboxHeight;
+    float bottom = obj->oPosY - obj->hitboxDownOffset;
+
+    if ((dx * dx) + (dz * dz) > radius * radius)
+    {
+        return false;
+    }
+
+    if (m->pos[1] < bottom || m->pos[1] > top)
+    {
+        return false;
+    }
+
+    return true;
+}
+
+void fake_object_add_collision(struct FakeObject *fake, struct MarioState *m)
+{
+    struct Object *obj = &fake->object;
+
+    if (obj->oHeldState != 0)
+    {
+        return;
+    }
+
+    m->marioObj->collidedObjInteractTypes |= obj->oInteractType;
+    if (m->marioObj->numCollidedObjs < 4)
+    {
+        m->marioObj->collidedObjs[m->marioObj->numCollidedObjs++] = obj;
+    }
+}
+
+void fake_object_apply_pole(struct FakeObject *fake)
+{
+    (void)fake;
+}
+
+void fake_object_set_preset(struct FakeObject *fake, uint32_t preset)
+{
+    struct Object *obj = &fake->object;
+
+    switch (preset)
+    {
+        case 1:
+            obj->oInteractType = INTERACT_POLE;
+            obj->oInteractionSubtype = 0;
+            obj->hitboxRadius = 60.0f;
+            obj->hitboxHeight = 1000.0f;
+            obj->hitboxDownOffset = 0.0f;
+            break;
+        case 0: default:
+            obj->oInteractType = 0;
+            obj->oInteractionSubtype = 0;
+            obj->hitboxRadius = 50.0f;
+            obj->hitboxHeight = 100.0f;
+            obj->hitboxDownOffset = 0.0f;
+            break;
+    }
+}