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rubberduckycooly
GitHub Repository: rubberduckycooly/Sonic-Mania-Decompilation
 Path: blob/master/SonicMania/Objects/UFO/UFO_Shadow.c
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// ---------------------------------------------------------------------

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// RSDK Project: Sonic Mania

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// Object Description: UFO_Shadow Object

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// Object Author: Christian Whitehead/Simon Thomley/Hunter Bridges

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// Decompiled by: Rubberduckycooly & RMGRich

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// ---------------------------------------------------------------------

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#include "Game.h"

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ObjectUFO_Shadow *UFO_Shadow;

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void UFO_Shadow_Update(void) {}

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void UFO_Shadow_LateUpdate(void)

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{

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    RSDK_THIS(UFO_Shadow);

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    Entity *parent = self->parent;

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    if (parent->classID) {

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        self->position.x = parent->position.x;

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        self->position.y = parent->position.y;

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        if (RSDK.GetTile(UFO_Setup->playFieldLayer, self->position.x >> 20, self->position.y >> 20) == (uint16)-1 || parent->drawGroup != 4) {

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            self->visible = false;

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        }

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        else {

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            self->visible = true;

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            int32 x       = self->position.x >> 8;

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            int32 z       = self->position.y >> 8;

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            Matrix *mat   = &UFO_Camera->matWorld;

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            self->zdepth = mat->values[2][3] + (z * mat->values[2][2] >> 8) + (x * mat->values[2][0] >> 8);

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            if (self->zdepth >= 0x4000) {

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                self->visible =

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                    abs((int32)((mat->values[0][3] << 8) + ((z * mat->values[0][2]) & 0xFFFFFF00) + ((x * mat->values[0][0]) & 0xFFFFFF00))

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                        / self->zdepth)

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                    < 0x100;

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            }

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        }

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    }

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    else {

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        destroyEntity(self);

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    }

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}

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void UFO_Shadow_StaticUpdate(void) {}

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void UFO_Shadow_Draw(void)

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{

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    RSDK_THIS(UFO_Shadow);

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    if (self->zdepth >= 0x4000) {

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        RSDK.MatrixScaleXYZ(&self->matrix, self->shadowScale, 0x100, self->shadowScale);

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        RSDK.MatrixTranslateXYZ(&self->matrix, self->position.x, 0, self->position.y, 0);

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        RSDK.MatrixMultiply(&self->matrix, &self->matrix, &UFO_Camera->matWorld);

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        RSDK.Prepare3DScene(UFO_Shadow->sceneID);

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        RSDK.AddModelTo3DScene(UFO_Shadow->modelIndex, UFO_Shadow->sceneID, S3D_SOLIDCOLOR_SCREEN, &self->matrix, 0, 0);

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        RSDK.Draw3DScene(UFO_Shadow->sceneID);

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    }

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}

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void UFO_Shadow_Create(void *data)

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{

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    RSDK_THIS(UFO_Shadow);

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    if (!SceneInfo->inEditor) {

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        self->inkEffect     = INK_BLEND;

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        self->visible       = true;

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        self->drawFX        = FX_SCALE;

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        self->drawGroup     = 3;

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        self->active        = ACTIVE_RBOUNDS;

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        self->updateRange.x = 0x300;

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        self->updateRange.y = 0x300;

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    }

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}

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void UFO_Shadow_StageLoad(void)

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{

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    UFO_Shadow->modelIndex = RSDK.LoadMesh("Special/Shadow.bin", SCOPE_STAGE);

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    UFO_Shadow->sceneID    = RSDK.Create3DScene("View:Special", 4096, SCOPE_STAGE);

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    int32 slot = TEMPENTITY_START;

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    foreach_all(UFO_Player, player)

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    {

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        EntityUFO_Shadow *shadow = RSDK_GET_ENTITY(slot--, UFO_Shadow);

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        RSDK.ResetEntity(shadow, UFO_Shadow->classID, NULL);

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        shadow->position.x  = player->position.x;

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        shadow->position.y  = player->position.y;

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        shadow->parent      = (Entity *)player;

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        shadow->shadowScale = 0x140;

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    }

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    foreach_all(UFO_Circuit, ufo)

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    {

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        if (ufo->startNode) {

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            EntityUFO_Shadow *shadow = RSDK_GET_ENTITY(slot--, UFO_Shadow);

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            RSDK.ResetEntity(shadow, UFO_Shadow->classID, NULL);

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            shadow->position.x  = ufo->position.x;

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            shadow->position.y  = ufo->position.y;

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            shadow->parent      = (Entity *)ufo;

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            shadow->shadowScale = 0x400;

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        }

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    }

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    foreach_all(UFO_Ring, ring)

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    {

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        EntityUFO_Shadow *shadow = RSDK_GET_ENTITY(slot--, UFO_Shadow);

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        RSDK.ResetEntity(shadow, UFO_Shadow->classID, NULL);

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        shadow->position.x  = ring->position.x;

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        shadow->position.y  = ring->position.y;

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        shadow->parent      = (Entity *)ring;

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        shadow->shadowScale = 0xC0;

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    }

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    foreach_all(UFO_Sphere, sphere)

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    {

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        EntityUFO_Shadow *shadow = RSDK_GET_ENTITY(slot--, UFO_Shadow);

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        RSDK.ResetEntity(shadow, UFO_Shadow->classID, NULL);

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        shadow->position.x  = sphere->position.x;

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        shadow->position.y  = sphere->position.y;

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        shadow->parent      = (Entity *)sphere;

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        shadow->shadowScale = 0x100;

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    }

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    LogHelpers_Print("%d shadow entities spawned", TEMPENTITY_START - slot);

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}

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#if GAME_INCLUDE_EDITOR

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void UFO_Shadow_EditorDraw(void) {}

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void UFO_Shadow_EditorLoad(void) {}

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#endif

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void UFO_Shadow_Serialize(void) {}

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