179 lines
4.3 KiB
C++
179 lines
4.3 KiB
C++
/************************/
|
|
/*** Tile Layer Class ***/
|
|
/************************/
|
|
|
|
#include "system\global.h"
|
|
#include <DStructs.h>
|
|
#include "utils\utils.h"
|
|
#include "system\vid.h"
|
|
#include "gfx\prim.h"
|
|
|
|
#include "LayerTile.h"
|
|
|
|
const u32 XInc=16<<0;
|
|
const u32 YInc=16<<16;
|
|
|
|
/*****************************************************************************/
|
|
static const int TILE2D_WIDTH=16;
|
|
static const int TILE2D_HEIGHT=12;
|
|
static const int SCREEN_TILE2D_WIDTH=((512/TILE2D_WIDTH)+1);
|
|
static const int SCREEN_TILE2D_HEIGHT=((256/TILE2D_HEIGHT)+1);
|
|
static const int PrimCount=SCREEN_TILE2D_WIDTH*SCREEN_TILE2D_HEIGHT;
|
|
static const int PrimMemSize=PrimCount*sizeof(TSPRT);
|
|
|
|
/*****************************************************************************/
|
|
/*****************************************************************************/
|
|
/*****************************************************************************/
|
|
|
|
CLayerTile::CLayerTile(sLevelHdr *LevelHdr,sLayerHdr *Hdr)
|
|
{
|
|
LayerHdr=Hdr;
|
|
MapWidth=LayerHdr->Width;
|
|
MapHeight=LayerHdr->Height;
|
|
|
|
ElemBank2d=LevelHdr->ElemBank2d;
|
|
Map=(sTileMapElem*)MakePtr(Hdr,sizeof(sLayerHdr));
|
|
|
|
PrimBankID=0;
|
|
PrimBank[0]=0; PrimBank[1]=0;
|
|
|
|
if (Hdr->SubType!=LAYER_TILE_TYPE_MID) return;
|
|
//-----------------
|
|
// anything below here is Mid layer only - how did I miss something like this, 104k WASTED!!
|
|
|
|
// Create Mid Tile Prim Banks
|
|
for (int b=0; b<2; b++)
|
|
{
|
|
PrimBank[b]=(TSPRT*)MemAlloc(PrimMemSize,"Mid Polyz");
|
|
TSPRT *PrimPtr=PrimBank[b];
|
|
for (int i=0; i<PrimCount; i++)
|
|
{
|
|
setTSprt(PrimPtr);
|
|
setTSetShadeTex(PrimPtr,1);
|
|
PrimPtr->w=TILE2D_WIDTH;
|
|
PrimPtr->h=TILE2D_HEIGHT;
|
|
PrimPtr++;
|
|
}
|
|
}
|
|
|
|
// precalc Mid tile offsets
|
|
sTileMapElem *MapPtr=Map;
|
|
for (int Y=0; Y<MapHeight; Y++)
|
|
{
|
|
for (int X=0; X<MapWidth; X++)
|
|
{
|
|
MapPtr->Tile*=sizeof(sElem2d);
|
|
MapPtr++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
CLayerTile::~CLayerTile()
|
|
{
|
|
for (int b=0; b<2; b++)
|
|
{
|
|
if (PrimBank[b]) MemFree(PrimBank[b]);
|
|
}
|
|
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/*****************************************************************************/
|
|
/*****************************************************************************/
|
|
void CLayerTile::init(DVECTOR &MapPos,int Shift)
|
|
{
|
|
MapXYShift=Shift;
|
|
MapXY=MapPos;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void CLayerTile::shutdown()
|
|
{
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/*****************************************************************************/
|
|
/*****************************************************************************/
|
|
void CLayerTile::think(DVECTOR &MapPos)
|
|
{
|
|
int XPos=MapPos.vx>>MapXYShift;
|
|
int YPos=MapPos.vy>>MapXYShift;
|
|
|
|
MapXY.vx=XPos>>4;
|
|
MapXY.vy=YPos/TILE2D_HEIGHT;
|
|
|
|
ShiftX=XPos & 15;
|
|
ShiftY=YPos%TILE2D_HEIGHT;
|
|
|
|
if (MapXY.vx<0)
|
|
{
|
|
MapXY.vx=0;
|
|
ShiftX=0;
|
|
}
|
|
if (MapXY.vy<0)
|
|
{
|
|
MapXY.vy=0;
|
|
ShiftY=0;
|
|
}
|
|
|
|
if (MapXY.vx+SCREEN_TILE2D_WIDTH<=MapWidth)
|
|
RenderW=SCREEN_TILE2D_WIDTH;
|
|
else
|
|
RenderW=MapWidth-MapXY.vx;
|
|
|
|
if (MapXY.vy+SCREEN_TILE2D_HEIGHT<=MapHeight)
|
|
RenderH=SCREEN_TILE2D_HEIGHT;
|
|
else
|
|
RenderH=MapHeight-MapXY.vy;
|
|
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/*****************************************************************************/
|
|
/*****************************************************************************/
|
|
void CLayerTile::render()
|
|
{
|
|
sTileMapElem *MapPtr=Map+GetMapOfs();
|
|
s16 TileX,TileY;
|
|
sOT *ThisOT=OtPtr+LayerOT;
|
|
TSPRT *PrimPtr=PrimBank[PrimBankID];
|
|
u8 *TileBank=(u8*)ElemBank2d;
|
|
u32 T0,T1;
|
|
|
|
PrimBankID^=1;
|
|
|
|
// Setup shift bits of pos
|
|
TileY=-ShiftY;
|
|
|
|
// Render it!!
|
|
|
|
for (int Y=0; Y<RenderH; Y++)
|
|
{
|
|
sTileMapElem *MapRow=MapPtr;
|
|
TileX=-ShiftX;
|
|
|
|
for (int X=0; X<RenderW; X++)
|
|
{
|
|
int ThisTile=MapRow->Tile;
|
|
if (ThisTile)
|
|
{
|
|
sElem2d *Tile=(sElem2d*)(TileBank+ThisTile);
|
|
PrimPtr->x0=TileX;
|
|
PrimPtr->y0=TileY;
|
|
T0=Tile->TPage;
|
|
T1=*(u32*)&Tile->u0;
|
|
PrimPtr->t_code=T0; // pregen'd setTSprtTPage(PrimPtr,Tile->TPage);
|
|
*(u32*)&PrimPtr->u0=T1; // copy uv AND clut
|
|
addPrim(ThisOT,PrimPtr);
|
|
PrimPtr++;
|
|
}
|
|
MapRow++;
|
|
TileX+=TILE2D_WIDTH;
|
|
}
|
|
MapPtr+=MapWidth;
|
|
TileY+=TILE2D_HEIGHT;
|
|
}
|
|
|
|
}
|