public void Engine()
{
do
{
var raw = _skyCompact.FetchCptRaw((ushort)_scriptVariables[LOGIC_LIST_NO]);
var logicList = new UShortAccess(raw, 0);
ushort id;
while ((id = logicList[0]) != 0)
{
logicList.Offset += 2;
// 0 means end of list
if (id == 0xffff)
{
// Change logic data address
raw = _skyCompact.FetchCptRaw(logicList[0]);
logicList = new UShortAccess(raw, 0);
continue;
}
_scriptVariables[CUR_ID] = id;
_compact = _skyCompact.FetchCpt(id);
// check the id actually wishes to be processed
if ((_compact.Core.status & (1 << 6)) == 0)
{
continue;
}
// ok, here we process the logic bit system
if ((_compact.Core.status & (1 << 7)) != 0)
{
_skyGrid.RemoveObjectFromWalk(_compact);
}
Debug.Instance.Logic(_compact.Core.logic);
_logicTable[_compact.Core.logic]();
if ((_compact.Core.status & (1 << 7)) != 0)
{
_skyGrid.ObjectToWalk(_compact);
}
// a sync sent to the compact is available for one cycle
// only. that cycle has just ended so remove the sync.
// presumably the mega has just reacted to it.
_compact.Core.sync = 0;
}
// usually this loop is run only once, it'll only be run a second time if the game
// script just asked the user to enter a copy protection code.
// this is done to prevent the copy protection screen from flashing up.
// (otherwise it would be visible for 1/50 second)
} while (CheckProtection());
}
private void ButtonEngine1()
{
//checks for clicking on special item
//"compare the size of this routine to S1 mouse_button"
if (_mouseB != 0)
{
//anything pressed?
Logic.ScriptVariables[Logic.BUTTON] = _mouseB;
if (Logic.ScriptVariables[Logic.SPECIAL_ITEM] != 0)
{
//over anything?
var item = _skyCompact.FetchCpt((ushort)Logic.ScriptVariables[Logic.SPECIAL_ITEM]);
if (item.Core.mouseClick != 0)
{
Logic.MouseScript(item.Core.mouseClick, item);
}
}
}
}
public void LoadGrids()
{
// no endian conversion necessary as I'm using uint8* instead of uint32*
for (byte cnt = 0; cnt < TotNoGrids; cnt++)
{
_gameGrids[cnt] = _skyDisk.LoadFile(GridFileStart + cnt);
}
if (!SkyEngine.IsDemo)
{
// single disk demos never get that far
// Reloading the grids can sometimes cause problems eg when reichs door is
// open the door grid bit gets replaced so you can't get back in (or out)
if (_skyLogic.ScriptVariables[Logic.REICH_DOOR_FLAG] != 0)
{
RemoveGrid(256, 280, 1, _skyCompact.FetchCpt((ushort)CptIds.ReichDoor20));
}
//removeGrid(256, 280, 1, &SkyCompact::reich_door_20);
}
}