Scrolling Code Module 4

// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \\
// Coolgamers Z3 Scrolling, Version 2 Update/Itteration 4 Module 4. \\
// Module 4:                                                        \\
// Custom Sprites                                                   \\
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \\

// ~ Misc Constants ~
const int SCRL_ITM_DEADSTATE_DEAD = 0; // Removes the Item.
const int SCRL_ITM_DEADSTATE_ALIVE = -1; // The Item isn't removed over time.

const int SCRL_ITM_IS_NOT_SPRITE = 0;
const int SCRL_ITM_IS_SPRITE = 1;

const int SPRITE_ITEM_ID = 143;

// ~ ->Misc[] indices ~
const int MISC_ITM_SPRITESTATE = 0; // Marks if the Item is a sprite or not.
const int MISC_ITM_DEADSTATE = 1;
const int MISC_ITM_SPAWN_X = 2; // The X position that the item was spawned at.
const int MISC_ITM_SPAWN_Y = 3; // The Y position that the item was spawned at.

// ~ Functions ~


item CreateCustomSprite(int miscSpriteID, int itmDeadState, int x, int y)
{
    lweapon tempSprite = CreateLWeaponAt(0, 120, 80);
    tempSprite->UseSprite(miscSpriteID);

    item Sprite = CreateItemAt(SPRITE_ITEM_ID, 120, 80);

    Sprite->HitXOffset = (x - 120);
    Sprite->HitYOffset = (y - 80);
    Sprite->DrawXOffset = Sprite->HitXOffset;
    Sprite->DrawYOffset = Sprite->HitYOffset;

    Sprite->OriginalTile = tempSprite->OriginalTile;
    Sprite->Tile = tempSprite->OriginalTile;
    Sprite->CSet = tempSprite->CSet;
    Sprite->FlashCSet = tempSprite->FlashCSet;
    Sprite->NumFrames = tempSprite->NumFrames;
    Sprite->ASpeed = tempSprite->ASpeed;
    Sprite->Flash = tempSprite->Flash;
    Sprite->Flip = tempSprite->Flip;
    //SetFlag(Sprite->Pickup, IP_DUMMY, true);

    Sprite->Misc[MISC_ITM_SPRITESTATE] = SCRL_ITM_IS_SPRITE;
    Sprite->Misc[MISC_ITM_DEADSTATE] = itmDeadState;

    Sprite->Misc[MISC_ITM_SPAWN_X] = x;
    Sprite->Misc[MISC_ITM_SPAWN_Y] = y;

    Sprite->HitXOffset = NODETECT_HITXOFFSET;

    Remove(tempSprite);

    return Sprite;
}

void HandleCustomSprites()
{
    for(int i = 1; i <= Screen->NumItems(); i += 1)
    {
        item itm = Screen->LoadItem(i);

        if(itm->Misc[MISC_ITM_SPRITESTATE] == SCRL_ITM_IS_SPRITE)
        {
            if(itm->Misc[MISC_ITM_DEADSTATE] == SCRL_ITM_DEADSTATE_DEAD)
            {
                Remove(itm);
            }
            else if(itm->Misc[MISC_ITM_DEADSTATE] > SCRL_ITM_DEADSTATE_DEAD)
            {
                itm->Misc[MISC_ITM_DEADSTATE] -= 1;
            }
        }
    }
}