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