forked from KolibriOS/kolibrios
1650 lines
47 KiB
C++
1650 lines
47 KiB
C++
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// WL_DRAW.C
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#include "wl_def.h"
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#pragma hdrstop
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#include "wl_cloudsky.h"
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#include "wl_atmos.h"
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#include "wl_shade.h"
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/*
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=============================================================================
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LOCAL CONSTANTS
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=============================================================================
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*/
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// the door is the last picture before the sprites
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#define DOORWALL (PMSpriteStart-8)
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#define ACTORSIZE 0x4000
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/*
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=============================================================================
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GLOBAL VARIABLES
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=============================================================================
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*/
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static byte *vbuf = NULL;
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unsigned vbufPitch = 0;
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int32_t lasttimecount;
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int32_t frameon;
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boolean fpscounter;
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int fps_frames=0, fps_time=0, fps=0;
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int *wallheight;
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int min_wallheight;
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//
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// math tables
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//
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short *pixelangle;
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int32_t finetangent[FINEANGLES/4];
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fixed sintable[ANGLES+ANGLES/4];
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fixed *costable = sintable+(ANGLES/4);
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//
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// refresh variables
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//
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fixed viewx,viewy; // the focal point
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short viewangle;
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fixed viewsin,viewcos;
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void TransformActor (objtype *ob);
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void BuildTables (void);
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void ClearScreen (void);
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int CalcRotate (objtype *ob);
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void DrawScaleds (void);
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void CalcTics (void);
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void ThreeDRefresh (void);
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//
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// wall optimization variables
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//
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int lastside; // true for vertical
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int32_t lastintercept;
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int lasttilehit;
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int lasttexture;
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//
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// ray tracing variables
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//
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short focaltx,focalty,viewtx,viewty;
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longword xpartialup,xpartialdown,ypartialup,ypartialdown;
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short midangle,angle;
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word tilehit;
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int pixx;
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short xtile,ytile;
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short xtilestep,ytilestep;
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int32_t xintercept,yintercept;
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word xstep,ystep;
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word xspot,yspot;
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int texdelta;
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word horizwall[MAXWALLTILES],vertwall[MAXWALLTILES];
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/*
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============================================================================
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3 - D DEFINITIONS
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============================================================================
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*/
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/*
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========================
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=
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= TransformActor
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=
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= Takes paramaters:
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= gx,gy : globalx/globaly of point
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=
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= globals:
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= viewx,viewy : point of view
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= viewcos,viewsin : sin/cos of viewangle
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= scale : conversion from global value to screen value
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=
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= sets:
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= screenx,transx,transy,screenheight: projected edge location and size
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=
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========================
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*/
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//
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// transform actor
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//
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void TransformActor (objtype *ob)
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{
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fixed gx,gy,gxt,gyt,nx,ny;
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//
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// translate point to view centered coordinates
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//
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gx = ob->x-viewx;
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gy = ob->y-viewy;
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//
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// calculate newx
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//
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gxt = FixedMul(gx,viewcos);
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gyt = FixedMul(gy,viewsin);
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nx = gxt-gyt-ACTORSIZE; // fudge the shape forward a bit, because
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// the midpoint could put parts of the shape
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// into an adjacent wall
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//
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// calculate newy
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//
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gxt = FixedMul(gx,viewsin);
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gyt = FixedMul(gy,viewcos);
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ny = gyt+gxt;
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//
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// calculate perspective ratio
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//
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ob->transx = nx;
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ob->transy = ny;
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if (nx<MINDIST) // too close, don't overflow the divide
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{
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ob->viewheight = 0;
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return;
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}
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ob->viewx = (word)(centerx + ny*scale/nx);
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//
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// calculate height (heightnumerator/(nx>>8))
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//
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ob->viewheight = (word)(heightnumerator/(nx>>8));
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}
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//==========================================================================
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/*
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========================
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=
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= TransformTile
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=
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= Takes paramaters:
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= tx,ty : tile the object is centered in
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=
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= globals:
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= viewx,viewy : point of view
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= viewcos,viewsin : sin/cos of viewangle
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= scale : conversion from global value to screen value
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=
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= sets:
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= screenx,transx,transy,screenheight: projected edge location and size
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=
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= Returns true if the tile is withing getting distance
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=
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========================
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*/
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boolean TransformTile (int tx, int ty, short *dispx, short *dispheight)
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{
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fixed gx,gy,gxt,gyt,nx,ny;
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//
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// translate point to view centered coordinates
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//
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gx = ((int32_t)tx<<TILESHIFT)+0x8000-viewx;
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gy = ((int32_t)ty<<TILESHIFT)+0x8000-viewy;
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//
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// calculate newx
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//
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gxt = FixedMul(gx,viewcos);
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gyt = FixedMul(gy,viewsin);
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nx = gxt-gyt-0x2000; // 0x2000 is size of object
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//
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// calculate newy
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//
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gxt = FixedMul(gx,viewsin);
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gyt = FixedMul(gy,viewcos);
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ny = gyt+gxt;
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//
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// calculate height / perspective ratio
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//
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if (nx<MINDIST) // too close, don't overflow the divide
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*dispheight = 0;
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else
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{
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*dispx = (short)(centerx + ny*scale/nx);
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*dispheight = (short)(heightnumerator/(nx>>8));
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}
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//
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// see if it should be grabbed
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//
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if (nx<TILEGLOBAL && ny>-TILEGLOBAL/2 && ny<TILEGLOBAL/2)
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return true;
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else
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return false;
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}
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//==========================================================================
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/*
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====================
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=
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= CalcHeight
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=
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= Calculates the height of xintercept,yintercept from viewx,viewy
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=
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====================
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*/
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int CalcHeight()
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{
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fixed z = FixedMul(xintercept - viewx, viewcos)
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- FixedMul(yintercept - viewy, viewsin);
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if(z < MINDIST) z = MINDIST;
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int height = heightnumerator / (z >> 8);
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if(height < min_wallheight) min_wallheight = height;
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return height;
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}
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//==========================================================================
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/*
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===================
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=
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= ScalePost
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=
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===================
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*/
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byte *postsource;
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int postx;
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int postwidth;
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void ScalePost()
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{
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int ywcount, yoffs, yw, yd, yendoffs;
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byte col;
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#ifdef USE_SHADING
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byte *curshades = shadetable[GetShade(wallheight[postx])];
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#endif
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ywcount = yd = wallheight[postx] >> 3;
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if(yd <= 0) yd = 100;
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yoffs = (viewheight / 2 - ywcount) * vbufPitch;
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if(yoffs < 0) yoffs = 0;
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yoffs += postx;
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yendoffs = viewheight / 2 + ywcount - 1;
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yw=TEXTURESIZE-1;
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while(yendoffs >= viewheight)
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{
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ywcount -= TEXTURESIZE/2;
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while(ywcount <= 0)
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{
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ywcount += yd;
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yw--;
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}
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yendoffs--;
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}
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if(yw < 0) return;
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#ifdef USE_SHADING
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col = curshades[postsource[yw]];
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#else
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col = postsource[yw];
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#endif
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yendoffs = yendoffs * vbufPitch + postx;
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while(yoffs <= yendoffs)
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{
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vbuf[yendoffs] = col;
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ywcount -= TEXTURESIZE/2;
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if(ywcount <= 0)
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{
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do
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{
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ywcount += yd;
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yw--;
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}
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while(ywcount <= 0);
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if(yw < 0) break;
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#ifdef USE_SHADING
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col = curshades[postsource[yw]];
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#else
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col = postsource[yw];
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#endif
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}
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yendoffs -= vbufPitch;
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}
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}
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void GlobalScalePost(byte *vidbuf, unsigned pitch)
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{
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vbuf = vidbuf;
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vbufPitch = pitch;
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ScalePost();
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}
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/*
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====================
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=
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= HitVertWall
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=
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= tilehit bit 7 is 0, because it's not a door tile
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= if bit 6 is 1 and the adjacent tile is a door tile, use door side pic
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=
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====================
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*/
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void HitVertWall (void)
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{
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int wallpic;
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int texture;
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texture = ((yintercept+texdelta)>>TEXTUREFROMFIXEDSHIFT)&TEXTUREMASK;
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if (xtilestep == -1)
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{
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texture = TEXTUREMASK-texture;
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xintercept += TILEGLOBAL;
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}
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if(lastside==1 && lastintercept==xtile && lasttilehit==tilehit && !(lasttilehit & 0x40))
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{
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if((pixx&3) && texture == lasttexture)
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{
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ScalePost();
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postx = pixx;
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wallheight[pixx] = wallheight[pixx-1];
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return;
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}
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ScalePost();
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wallheight[pixx] = CalcHeight();
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postsource+=texture-lasttexture;
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postwidth=1;
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postx=pixx;
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lasttexture=texture;
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return;
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}
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if(lastside!=-1) ScalePost();
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lastside=1;
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lastintercept=xtile;
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lasttilehit=tilehit;
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lasttexture=texture;
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wallheight[pixx] = CalcHeight();
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postx = pixx;
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postwidth = 1;
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if (tilehit & 0x40)
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{ // check for adjacent doors
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ytile = (short)(yintercept>>TILESHIFT);
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if ( tilemap[xtile-xtilestep][ytile]&0x80 )
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wallpic = DOORWALL+3;
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else
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wallpic = vertwall[tilehit & ~0x40];
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}
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else
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wallpic = vertwall[tilehit];
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postsource = PM_GetTexture(wallpic) + texture;
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}
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/*
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====================
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=
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= HitHorizWall
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=
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= tilehit bit 7 is 0, because it's not a door tile
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||
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= if bit 6 is 1 and the adjacent tile is a door tile, use door side pic
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=
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====================
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*/
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void HitHorizWall (void)
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{
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int wallpic;
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int texture;
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texture = ((xintercept+texdelta)>>TEXTUREFROMFIXEDSHIFT)&TEXTUREMASK;
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if (ytilestep == -1)
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yintercept += TILEGLOBAL;
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else
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texture = TEXTUREMASK-texture;
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||
|
|
if(lastside==0 && lastintercept==ytile && lasttilehit==tilehit && !(lasttilehit & 0x40))
|
||
|
|
{
|
||
|
|
if((pixx&3) && texture == lasttexture)
|
||
|
|
{
|
||
|
|
ScalePost();
|
||
|
|
postx=pixx;
|
||
|
|
wallheight[pixx] = wallheight[pixx-1];
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
ScalePost();
|
||
|
|
wallheight[pixx] = CalcHeight();
|
||
|
|
postsource+=texture-lasttexture;
|
||
|
|
postwidth=1;
|
||
|
|
postx=pixx;
|
||
|
|
lasttexture=texture;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(lastside!=-1) ScalePost();
|
||
|
|
|
||
|
|
lastside=0;
|
||
|
|
lastintercept=ytile;
|
||
|
|
lasttilehit=tilehit;
|
||
|
|
lasttexture=texture;
|
||
|
|
wallheight[pixx] = CalcHeight();
|
||
|
|
postx = pixx;
|
||
|
|
postwidth = 1;
|
||
|
|
|
||
|
|
if (tilehit & 0x40)
|
||
|
|
{ // check for adjacent doors
|
||
|
|
xtile = (short)(xintercept>>TILESHIFT);
|
||
|
|
if ( tilemap[xtile][ytile-ytilestep]&0x80)
|
||
|
|
wallpic = DOORWALL+2;
|
||
|
|
else
|
||
|
|
wallpic = horizwall[tilehit & ~0x40];
|
||
|
|
}
|
||
|
|
else
|
||
|
|
wallpic = horizwall[tilehit];
|
||
|
|
|
||
|
|
postsource = PM_GetTexture(wallpic) + texture;
|
||
|
|
}
|
||
|
|
|
||
|
|
//==========================================================================
|
||
|
|
|
||
|
|
/*
|
||
|
|
====================
|
||
|
|
=
|
||
|
|
= HitHorizDoor
|
||
|
|
=
|
||
|
|
====================
|
||
|
|
*/
|
||
|
|
|
||
|
|
void HitHorizDoor (void)
|
||
|
|
{
|
||
|
|
int doorpage;
|
||
|
|
int doornum;
|
||
|
|
int texture;
|
||
|
|
|
||
|
|
doornum = tilehit&0x7f;
|
||
|
|
texture = ((xintercept-doorposition[doornum])>>TEXTUREFROMFIXEDSHIFT)&TEXTUREMASK;
|
||
|
|
|
||
|
|
if(lasttilehit==tilehit)
|
||
|
|
{
|
||
|
|
if((pixx&3) && texture == lasttexture)
|
||
|
|
{
|
||
|
|
ScalePost();
|
||
|
|
postx=pixx;
|
||
|
|
wallheight[pixx] = wallheight[pixx-1];
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
ScalePost();
|
||
|
|
wallheight[pixx] = CalcHeight();
|
||
|
|
postsource+=texture-lasttexture;
|
||
|
|
postwidth=1;
|
||
|
|
postx=pixx;
|
||
|
|
lasttexture=texture;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(lastside!=-1) ScalePost();
|
||
|
|
|
||
|
|
lastside=2;
|
||
|
|
lasttilehit=tilehit;
|
||
|
|
lasttexture=texture;
|
||
|
|
wallheight[pixx] = CalcHeight();
|
||
|
|
postx = pixx;
|
||
|
|
postwidth = 1;
|
||
|
|
|
||
|
|
switch(doorobjlist[doornum].lock)
|
||
|
|
{
|
||
|
|
case dr_normal:
|
||
|
|
doorpage = DOORWALL;
|
||
|
|
break;
|
||
|
|
case dr_lock1:
|
||
|
|
case dr_lock2:
|
||
|
|
case dr_lock3:
|
||
|
|
case dr_lock4:
|
||
|
|
doorpage = DOORWALL+6;
|
||
|
|
break;
|
||
|
|
case dr_elevator:
|
||
|
|
doorpage = DOORWALL+4;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
postsource = PM_GetTexture(doorpage) + texture;
|
||
|
|
}
|
||
|
|
|
||
|
|
//==========================================================================
|
||
|
|
|
||
|
|
/*
|
||
|
|
====================
|
||
|
|
=
|
||
|
|
= HitVertDoor
|
||
|
|
=
|
||
|
|
====================
|
||
|
|
*/
|
||
|
|
|
||
|
|
void HitVertDoor (void)
|
||
|
|
{
|
||
|
|
int doorpage;
|
||
|
|
int doornum;
|
||
|
|
int texture;
|
||
|
|
|
||
|
|
doornum = tilehit&0x7f;
|
||
|
|
texture = ((yintercept-doorposition[doornum])>>TEXTUREFROMFIXEDSHIFT)&TEXTUREMASK;
|
||
|
|
|
||
|
|
if(lasttilehit==tilehit)
|
||
|
|
{
|
||
|
|
if((pixx&3) && texture == lasttexture)
|
||
|
|
{
|
||
|
|
ScalePost();
|
||
|
|
postx=pixx;
|
||
|
|
wallheight[pixx] = wallheight[pixx-1];
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
ScalePost();
|
||
|
|
wallheight[pixx] = CalcHeight();
|
||
|
|
postsource+=texture-lasttexture;
|
||
|
|
postwidth=1;
|
||
|
|
postx=pixx;
|
||
|
|
lasttexture=texture;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(lastside!=-1) ScalePost();
|
||
|
|
|
||
|
|
lastside=2;
|
||
|
|
lasttilehit=tilehit;
|
||
|
|
lasttexture=texture;
|
||
|
|
wallheight[pixx] = CalcHeight();
|
||
|
|
postx = pixx;
|
||
|
|
postwidth = 1;
|
||
|
|
|
||
|
|
switch(doorobjlist[doornum].lock)
|
||
|
|
{
|
||
|
|
case dr_normal:
|
||
|
|
doorpage = DOORWALL+1;
|
||
|
|
break;
|
||
|
|
case dr_lock1:
|
||
|
|
case dr_lock2:
|
||
|
|
case dr_lock3:
|
||
|
|
case dr_lock4:
|
||
|
|
doorpage = DOORWALL+7;
|
||
|
|
break;
|
||
|
|
case dr_elevator:
|
||
|
|
doorpage = DOORWALL+5;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
postsource = PM_GetTexture(doorpage) + texture;
|
||
|
|
}
|
||
|
|
|
||
|
|
//==========================================================================
|
||
|
|
|
||
|
|
#define HitHorizBorder HitHorizWall
|
||
|
|
#define HitVertBorder HitVertWall
|
||
|
|
|
||
|
|
//==========================================================================
|
||
|
|
|
||
|
|
byte vgaCeiling[]=
|
||
|
|
{
|
||
|
|
#ifndef SPEAR
|
||
|
|
0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0x1d,0xbf,
|
||
|
|
0x4e,0x4e,0x4e,0x1d,0x8d,0x4e,0x1d,0x2d,0x1d,0x8d,
|
||
|
|
0x1d,0x1d,0x1d,0x1d,0x1d,0x2d,0xdd,0x1d,0x1d,0x98,
|
||
|
|
|
||
|
|
0x1d,0x9d,0x2d,0xdd,0xdd,0x9d,0x2d,0x4d,0x1d,0xdd,
|
||
|
|
0x7d,0x1d,0x2d,0x2d,0xdd,0xd7,0x1d,0x1d,0x1d,0x2d,
|
||
|
|
0x1d,0x1d,0x1d,0x1d,0xdd,0xdd,0x7d,0xdd,0xdd,0xdd
|
||
|
|
#else
|
||
|
|
0x6f,0x4f,0x1d,0xde,0xdf,0x2e,0x7f,0x9e,0xae,0x7f,
|
||
|
|
0x1d,0xde,0xdf,0xde,0xdf,0xde,0xe1,0xdc,0x2e,0x1d,0xdc
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
=====================
|
||
|
|
=
|
||
|
|
= VGAClearScreen
|
||
|
|
=
|
||
|
|
=====================
|
||
|
|
*/
|
||
|
|
|
||
|
|
void VGAClearScreen (void)
|
||
|
|
{
|
||
|
|
byte ceiling=vgaCeiling[gamestate.episode*10+mapon];
|
||
|
|
|
||
|
|
int y;
|
||
|
|
byte *ptr = vbuf;
|
||
|
|
#ifdef USE_SHADING
|
||
|
|
for(y = 0; y < viewheight / 2; y++, ptr += vbufPitch)
|
||
|
|
memset(ptr, shadetable[GetShade((viewheight / 2 - y) << 3)][ceiling], viewwidth);
|
||
|
|
for(; y < viewheight; y++, ptr += vbufPitch)
|
||
|
|
memset(ptr, shadetable[GetShade((y - viewheight / 2) << 3)][0x19], viewwidth);
|
||
|
|
#else
|
||
|
|
for(y = 0; y < viewheight / 2; y++, ptr += vbufPitch)
|
||
|
|
memset(ptr, ceiling, viewwidth);
|
||
|
|
for(; y < viewheight; y++, ptr += vbufPitch)
|
||
|
|
memset(ptr, 0x19, viewwidth);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
//==========================================================================
|
||
|
|
|
||
|
|
/*
|
||
|
|
=====================
|
||
|
|
=
|
||
|
|
= CalcRotate
|
||
|
|
=
|
||
|
|
=====================
|
||
|
|
*/
|
||
|
|
|
||
|
|
int CalcRotate (objtype *ob)
|
||
|
|
{
|
||
|
|
int angle, viewangle;
|
||
|
|
|
||
|
|
// this isn't exactly correct, as it should vary by a trig value,
|
||
|
|
// but it is close enough with only eight rotations
|
||
|
|
|
||
|
|
viewangle = player->angle + (centerx - ob->viewx)/8;
|
||
|
|
|
||
|
|
if (ob->obclass == rocketobj || ob->obclass == hrocketobj)
|
||
|
|
angle = (viewangle-180) - ob->angle;
|
||
|
|
else
|
||
|
|
angle = (viewangle-180) - dirangle[ob->dir];
|
||
|
|
|
||
|
|
angle+=ANGLES/16;
|
||
|
|
while (angle>=ANGLES)
|
||
|
|
angle-=ANGLES;
|
||
|
|
while (angle<0)
|
||
|
|
angle+=ANGLES;
|
||
|
|
|
||
|
|
if (ob->state->rotate == 2) // 2 rotation pain frame
|
||
|
|
return 0; // pain with shooting frame bugfix
|
||
|
|
|
||
|
|
return angle/(ANGLES/8);
|
||
|
|
}
|
||
|
|
|
||
|
|
void ScaleShape (int xcenter, int shapenum, unsigned height, uint32_t flags)
|
||
|
|
{
|
||
|
|
t_compshape *shape;
|
||
|
|
unsigned scale,pixheight;
|
||
|
|
unsigned starty,endy;
|
||
|
|
word *cmdptr;
|
||
|
|
byte *cline;
|
||
|
|
byte *line;
|
||
|
|
byte *vmem;
|
||
|
|
int actx,i,upperedge;
|
||
|
|
short newstart;
|
||
|
|
int scrstarty,screndy,lpix,rpix,pixcnt,ycnt;
|
||
|
|
unsigned j;
|
||
|
|
byte col;
|
||
|
|
|
||
|
|
#ifdef USE_SHADING
|
||
|
|
byte *curshades;
|
||
|
|
if(flags & FL_FULLBRIGHT)
|
||
|
|
curshades = shadetable[0];
|
||
|
|
else
|
||
|
|
curshades = shadetable[GetShade(height)];
|
||
|
|
#endif
|
||
|
|
|
||
|
|
shape = (t_compshape *) PM_GetSprite(shapenum);
|
||
|
|
|
||
|
|
scale=height>>3; // low three bits are fractional
|
||
|
|
if(!scale) return; // too close or far away
|
||
|
|
|
||
|
|
pixheight=scale*SPRITESCALEFACTOR;
|
||
|
|
actx=xcenter-scale;
|
||
|
|
upperedge=viewheight/2-scale;
|
||
|
|
|
||
|
|
cmdptr=(word *) shape->dataofs;
|
||
|
|
|
||
|
|
for(i=shape->leftpix,pixcnt=i*pixheight,rpix=(pixcnt>>6)+actx;i<=shape->rightpix;i++,cmdptr++)
|
||
|
|
{
|
||
|
|
lpix=rpix;
|
||
|
|
if(lpix>=viewwidth) break;
|
||
|
|
pixcnt+=pixheight;
|
||
|
|
rpix=(pixcnt>>6)+actx;
|
||
|
|
if(lpix!=rpix && rpix>0)
|
||
|
|
{
|
||
|
|
if(lpix<0) lpix=0;
|
||
|
|
if(rpix>viewwidth) rpix=viewwidth,i=shape->rightpix+1;
|
||
|
|
cline=(byte *)shape + *cmdptr;
|
||
|
|
while(lpix<rpix)
|
||
|
|
{
|
||
|
|
if(wallheight[lpix]<=(int)height)
|
||
|
|
{
|
||
|
|
line=cline;
|
||
|
|
while((endy = READWORD(line)) != 0)
|
||
|
|
{
|
||
|
|
endy >>= 1;
|
||
|
|
newstart = READWORD(line);
|
||
|
|
starty = READWORD(line) >> 1;
|
||
|
|
j=starty;
|
||
|
|
ycnt=j*pixheight;
|
||
|
|
screndy=(ycnt>>6)+upperedge;
|
||
|
|
if(screndy<0) vmem=vbuf+lpix;
|
||
|
|
else vmem=vbuf+screndy*vbufPitch+lpix;
|
||
|
|
for(;j<endy;j++)
|
||
|
|
{
|
||
|
|
scrstarty=screndy;
|
||
|
|
ycnt+=pixheight;
|
||
|
|
screndy=(ycnt>>6)+upperedge;
|
||
|
|
if(scrstarty!=screndy && screndy>0)
|
||
|
|
{
|
||
|
|
#ifdef USE_SHADING
|
||
|
|
col=curshades[((byte *)shape)[newstart+j]];
|
||
|
|
#else
|
||
|
|
col=((byte *)shape)[newstart+j];
|
||
|
|
#endif
|
||
|
|
if(scrstarty<0) scrstarty=0;
|
||
|
|
if(screndy>viewheight) screndy=viewheight,j=endy;
|
||
|
|
|
||
|
|
while(scrstarty<screndy)
|
||
|
|
{
|
||
|
|
*vmem=col;
|
||
|
|
vmem+=vbufPitch;
|
||
|
|
scrstarty++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
lpix++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void SimpleScaleShape (int xcenter, int shapenum, unsigned height)
|
||
|
|
{
|
||
|
|
t_compshape *shape;
|
||
|
|
unsigned scale,pixheight;
|
||
|
|
unsigned starty,endy;
|
||
|
|
word *cmdptr;
|
||
|
|
byte *cline;
|
||
|
|
byte *line;
|
||
|
|
int actx,i,upperedge;
|
||
|
|
short newstart;
|
||
|
|
int scrstarty,screndy,lpix,rpix,pixcnt,ycnt;
|
||
|
|
unsigned j;
|
||
|
|
byte col;
|
||
|
|
byte *vmem;
|
||
|
|
|
||
|
|
shape = (t_compshape *) PM_GetSprite(shapenum);
|
||
|
|
|
||
|
|
scale=height>>1;
|
||
|
|
pixheight=scale*SPRITESCALEFACTOR;
|
||
|
|
actx=xcenter-scale;
|
||
|
|
upperedge=viewheight/2-scale;
|
||
|
|
|
||
|
|
cmdptr=shape->dataofs;
|
||
|
|
|
||
|
|
for(i=shape->leftpix,pixcnt=i*pixheight,rpix=(pixcnt>>6)+actx;i<=shape->rightpix;i++,cmdptr++)
|
||
|
|
{
|
||
|
|
lpix=rpix;
|
||
|
|
if(lpix>=viewwidth) break;
|
||
|
|
pixcnt+=pixheight;
|
||
|
|
rpix=(pixcnt>>6)+actx;
|
||
|
|
if(lpix!=rpix && rpix>0)
|
||
|
|
{
|
||
|
|
if(lpix<0) lpix=0;
|
||
|
|
if(rpix>viewwidth) rpix=viewwidth,i=shape->rightpix+1;
|
||
|
|
cline = (byte *)shape + *cmdptr;
|
||
|
|
while(lpix<rpix)
|
||
|
|
{
|
||
|
|
line=cline;
|
||
|
|
while((endy = READWORD(line)) != 0)
|
||
|
|
{
|
||
|
|
endy >>= 1;
|
||
|
|
newstart = READWORD(line);
|
||
|
|
starty = READWORD(line) >> 1;
|
||
|
|
j=starty;
|
||
|
|
ycnt=j*pixheight;
|
||
|
|
screndy=(ycnt>>6)+upperedge;
|
||
|
|
if(screndy<0) vmem=vbuf+lpix;
|
||
|
|
else vmem=vbuf+screndy*vbufPitch+lpix;
|
||
|
|
for(;j<endy;j++)
|
||
|
|
{
|
||
|
|
scrstarty=screndy;
|
||
|
|
ycnt+=pixheight;
|
||
|
|
screndy=(ycnt>>6)+upperedge;
|
||
|
|
if(scrstarty!=screndy && screndy>0)
|
||
|
|
{
|
||
|
|
col=((byte *)shape)[newstart+j];
|
||
|
|
if(scrstarty<0) scrstarty=0;
|
||
|
|
if(screndy>viewheight) screndy=viewheight,j=endy;
|
||
|
|
|
||
|
|
while(scrstarty<screndy)
|
||
|
|
{
|
||
|
|
*vmem=col;
|
||
|
|
vmem+=vbufPitch;
|
||
|
|
scrstarty++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
lpix++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
=====================
|
||
|
|
=
|
||
|
|
= DrawScaleds
|
||
|
|
=
|
||
|
|
= Draws all objects that are visable
|
||
|
|
=
|
||
|
|
=====================
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define MAXVISABLE 250
|
||
|
|
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
short viewx,
|
||
|
|
viewheight,
|
||
|
|
shapenum;
|
||
|
|
short flags; // this must be changed to uint32_t, when you
|
||
|
|
// you need more than 16-flags for drawing
|
||
|
|
#ifdef USE_DIR3DSPR
|
||
|
|
statobj_t *transsprite;
|
||
|
|
#endif
|
||
|
|
} visobj_t;
|
||
|
|
|
||
|
|
visobj_t vislist[MAXVISABLE];
|
||
|
|
visobj_t *visptr,*visstep,*farthest;
|
||
|
|
|
||
|
|
void DrawScaleds (void)
|
||
|
|
{
|
||
|
|
int i,least,numvisable,height;
|
||
|
|
byte *tilespot,*visspot;
|
||
|
|
unsigned spotloc;
|
||
|
|
|
||
|
|
statobj_t *statptr;
|
||
|
|
objtype *obj;
|
||
|
|
|
||
|
|
visptr = &vislist[0];
|
||
|
|
|
||
|
|
//
|
||
|
|
// place static objects
|
||
|
|
//
|
||
|
|
for (statptr = &statobjlist[0] ; statptr !=laststatobj ; statptr++)
|
||
|
|
{
|
||
|
|
if ((visptr->shapenum = statptr->shapenum) == -1)
|
||
|
|
continue; // object has been deleted
|
||
|
|
|
||
|
|
if (!*statptr->visspot)
|
||
|
|
continue; // not visable
|
||
|
|
|
||
|
|
if (TransformTile (statptr->tilex,statptr->tiley,
|
||
|
|
&visptr->viewx,&visptr->viewheight) && statptr->flags & FL_BONUS)
|
||
|
|
{
|
||
|
|
GetBonus (statptr);
|
||
|
|
if(statptr->shapenum == -1)
|
||
|
|
continue; // object has been taken
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!visptr->viewheight)
|
||
|
|
continue; // to close to the object
|
||
|
|
|
||
|
|
#ifdef USE_DIR3DSPR
|
||
|
|
if(statptr->flags & FL_DIR_MASK)
|
||
|
|
visptr->transsprite=statptr;
|
||
|
|
else
|
||
|
|
visptr->transsprite=NULL;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (visptr < &vislist[MAXVISABLE-1]) // don't let it overflow
|
||
|
|
{
|
||
|
|
visptr->flags = (short) statptr->flags;
|
||
|
|
visptr++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// place active objects
|
||
|
|
//
|
||
|
|
for (obj = player->next;obj;obj=obj->next)
|
||
|
|
{
|
||
|
|
if ((visptr->shapenum = obj->state->shapenum)==0)
|
||
|
|
continue; // no shape
|
||
|
|
|
||
|
|
spotloc = (obj->tilex<<mapshift)+obj->tiley; // optimize: keep in struct?
|
||
|
|
visspot = &spotvis[0][0]+spotloc;
|
||
|
|
tilespot = &tilemap[0][0]+spotloc;
|
||
|
|
|
||
|
|
//
|
||
|
|
// could be in any of the nine surrounding tiles
|
||
|
|
//
|
||
|
|
if (*visspot
|
||
|
|
|| ( *(visspot-1) && !*(tilespot-1) )
|
||
|
|
|| ( *(visspot+1) && !*(tilespot+1) )
|
||
|
|
|| ( *(visspot-65) && !*(tilespot-65) )
|
||
|
|
|| ( *(visspot-64) && !*(tilespot-64) )
|
||
|
|
|| ( *(visspot-63) && !*(tilespot-63) )
|
||
|
|
|| ( *(visspot+65) && !*(tilespot+65) )
|
||
|
|
|| ( *(visspot+64) && !*(tilespot+64) )
|
||
|
|
|| ( *(visspot+63) && !*(tilespot+63) ) )
|
||
|
|
{
|
||
|
|
obj->active = ac_yes;
|
||
|
|
TransformActor (obj);
|
||
|
|
if (!obj->viewheight)
|
||
|
|
continue; // too close or far away
|
||
|
|
|
||
|
|
visptr->viewx = obj->viewx;
|
||
|
|
visptr->viewheight = obj->viewheight;
|
||
|
|
if (visptr->shapenum == -1)
|
||
|
|
visptr->shapenum = obj->temp1; // special shape
|
||
|
|
|
||
|
|
if (obj->state->rotate)
|
||
|
|
visptr->shapenum += CalcRotate (obj);
|
||
|
|
|
||
|
|
if (visptr < &vislist[MAXVISABLE-1]) // don't let it overflow
|
||
|
|
{
|
||
|
|
visptr->flags = (short) obj->flags;
|
||
|
|
#ifdef USE_DIR3DSPR
|
||
|
|
visptr->transsprite = NULL;
|
||
|
|
#endif
|
||
|
|
visptr++;
|
||
|
|
}
|
||
|
|
obj->flags |= FL_VISABLE;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
obj->flags &= ~FL_VISABLE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// draw from back to front
|
||
|
|
//
|
||
|
|
numvisable = (int) (visptr-&vislist[0]);
|
||
|
|
|
||
|
|
if (!numvisable)
|
||
|
|
return; // no visable objects
|
||
|
|
|
||
|
|
for (i = 0; i<numvisable; i++)
|
||
|
|
{
|
||
|
|
least = 32000;
|
||
|
|
for (visstep=&vislist[0] ; visstep<visptr ; visstep++)
|
||
|
|
{
|
||
|
|
height = visstep->viewheight;
|
||
|
|
if (height < least)
|
||
|
|
{
|
||
|
|
least = height;
|
||
|
|
farthest = visstep;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//
|
||
|
|
// draw farthest
|
||
|
|
//
|
||
|
|
#ifdef USE_DIR3DSPR
|
||
|
|
if(farthest->transsprite)
|
||
|
|
Scale3DShape(vbuf, vbufPitch, farthest->transsprite);
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
ScaleShape(farthest->viewx, farthest->shapenum, farthest->viewheight, farthest->flags);
|
||
|
|
|
||
|
|
farthest->viewheight = 32000;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//==========================================================================
|
||
|
|
|
||
|
|
/*
|
||
|
|
==============
|
||
|
|
=
|
||
|
|
= DrawPlayerWeapon
|
||
|
|
=
|
||
|
|
= Draw the player's hands
|
||
|
|
=
|
||
|
|
==============
|
||
|
|
*/
|
||
|
|
|
||
|
|
int weaponscale[NUMWEAPONS] = {SPR_KNIFEREADY, SPR_PISTOLREADY,
|
||
|
|
SPR_MACHINEGUNREADY, SPR_CHAINREADY};
|
||
|
|
|
||
|
|
void DrawPlayerWeapon (void)
|
||
|
|
{
|
||
|
|
int shapenum;
|
||
|
|
|
||
|
|
#ifndef SPEAR
|
||
|
|
if (gamestate.victoryflag)
|
||
|
|
{
|
||
|
|
#ifndef APOGEE_1_0
|
||
|
|
if (player->state == &s_deathcam && (GetTimeCount()&32) )
|
||
|
|
SimpleScaleShape(viewwidth/2,SPR_DEATHCAM,viewheight+1);
|
||
|
|
#endif
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (gamestate.weapon != -1)
|
||
|
|
{
|
||
|
|
shapenum = weaponscale[gamestate.weapon]+gamestate.weaponframe;
|
||
|
|
SimpleScaleShape(viewwidth/2,shapenum,viewheight+1);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (demorecord || demoplayback)
|
||
|
|
SimpleScaleShape(viewwidth/2,SPR_DEMO,viewheight+1);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//==========================================================================
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
=====================
|
||
|
|
=
|
||
|
|
= CalcTics
|
||
|
|
=
|
||
|
|
=====================
|
||
|
|
*/
|
||
|
|
|
||
|
|
void CalcTics (void)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// calculate tics since last refresh for adaptive timing
|
||
|
|
//
|
||
|
|
if (lasttimecount > (int32_t) GetTimeCount())
|
||
|
|
lasttimecount = GetTimeCount(); // if the game was paused a LONG time
|
||
|
|
|
||
|
|
uint32_t curtime = SDL_GetTicks();
|
||
|
|
tics = (curtime * 7) / 100 - lasttimecount;
|
||
|
|
if(!tics)
|
||
|
|
{
|
||
|
|
// wait until end of current tic
|
||
|
|
SDL_Delay(((lasttimecount + 1) * 100) / 7 - curtime);
|
||
|
|
tics = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
lasttimecount += tics;
|
||
|
|
|
||
|
|
if (tics>MAXTICS)
|
||
|
|
tics = MAXTICS;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//==========================================================================
|
||
|
|
|
||
|
|
void AsmRefresh()
|
||
|
|
{
|
||
|
|
int32_t xstep,ystep;
|
||
|
|
longword xpartial,ypartial;
|
||
|
|
boolean playerInPushwallBackTile = tilemap[focaltx][focalty] == 64;
|
||
|
|
|
||
|
|
for(pixx=0;pixx<viewwidth;pixx++)
|
||
|
|
{
|
||
|
|
short angl=midangle+pixelangle[pixx];
|
||
|
|
if(angl<0) angl+=FINEANGLES;
|
||
|
|
if(angl>=3600) angl-=FINEANGLES;
|
||
|
|
if(angl<900)
|
||
|
|
{
|
||
|
|
xtilestep=1;
|
||
|
|
ytilestep=-1;
|
||
|
|
xstep=finetangent[900-1-angl];
|
||
|
|
ystep=-finetangent[angl];
|
||
|
|
xpartial=xpartialup;
|
||
|
|
ypartial=ypartialdown;
|
||
|
|
}
|
||
|
|
else if(angl<1800)
|
||
|
|
{
|
||
|
|
xtilestep=-1;
|
||
|
|
ytilestep=-1;
|
||
|
|
xstep=-finetangent[angl-900];
|
||
|
|
ystep=-finetangent[1800-1-angl];
|
||
|
|
xpartial=xpartialdown;
|
||
|
|
ypartial=ypartialdown;
|
||
|
|
}
|
||
|
|
else if(angl<2700)
|
||
|
|
{
|
||
|
|
xtilestep=-1;
|
||
|
|
ytilestep=1;
|
||
|
|
xstep=-finetangent[2700-1-angl];
|
||
|
|
ystep=finetangent[angl-1800];
|
||
|
|
xpartial=xpartialdown;
|
||
|
|
ypartial=ypartialup;
|
||
|
|
}
|
||
|
|
else if(angl<3600)
|
||
|
|
{
|
||
|
|
xtilestep=1;
|
||
|
|
ytilestep=1;
|
||
|
|
xstep=finetangent[angl-2700];
|
||
|
|
ystep=finetangent[3600-1-angl];
|
||
|
|
xpartial=xpartialup;
|
||
|
|
ypartial=ypartialup;
|
||
|
|
}
|
||
|
|
yintercept=FixedMul(ystep,xpartial)+viewy;
|
||
|
|
xtile=focaltx+xtilestep;
|
||
|
|
xspot=(word)((xtile<<mapshift)+((uint32_t)yintercept>>16));
|
||
|
|
xintercept=FixedMul(xstep,ypartial)+viewx;
|
||
|
|
ytile=focalty+ytilestep;
|
||
|
|
yspot=(word)((((uint32_t)xintercept>>16)<<mapshift)+ytile);
|
||
|
|
texdelta=0;
|
||
|
|
|
||
|
|
// Special treatment when player is in back tile of pushwall
|
||
|
|
if(playerInPushwallBackTile)
|
||
|
|
{
|
||
|
|
if( pwalldir == di_east && xtilestep == 1
|
||
|
|
|| pwalldir == di_west && xtilestep == -1)
|
||
|
|
{
|
||
|
|
int32_t yintbuf = yintercept - ((ystep * (64 - pwallpos)) >> 6);
|
||
|
|
if((yintbuf >> 16) == focalty) // ray hits pushwall back?
|
||
|
|
{
|
||
|
|
if(pwalldir == di_east)
|
||
|
|
xintercept = (focaltx << TILESHIFT) + (pwallpos << 10);
|
||
|
|
else
|
||
|
|
xintercept = (focaltx << TILESHIFT) - TILEGLOBAL + ((64 - pwallpos) << 10);
|
||
|
|
yintercept = yintbuf;
|
||
|
|
ytile = (short) (yintercept >> TILESHIFT);
|
||
|
|
tilehit = pwalltile;
|
||
|
|
HitVertWall();
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if(pwalldir == di_south && ytilestep == 1
|
||
|
|
|| pwalldir == di_north && ytilestep == -1)
|
||
|
|
{
|
||
|
|
int32_t xintbuf = xintercept - ((xstep * (64 - pwallpos)) >> 6);
|
||
|
|
if((xintbuf >> 16) == focaltx) // ray hits pushwall back?
|
||
|
|
{
|
||
|
|
xintercept = xintbuf;
|
||
|
|
if(pwalldir == di_south)
|
||
|
|
yintercept = (focalty << TILESHIFT) + (pwallpos << 10);
|
||
|
|
else
|
||
|
|
yintercept = (focalty << TILESHIFT) - TILEGLOBAL + ((64 - pwallpos) << 10);
|
||
|
|
xtile = (short) (xintercept >> TILESHIFT);
|
||
|
|
tilehit = pwalltile;
|
||
|
|
HitHorizWall();
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
if(ytilestep==-1 && (yintercept>>16)<=ytile) goto horizentry;
|
||
|
|
if(ytilestep==1 && (yintercept>>16)>=ytile) goto horizentry;
|
||
|
|
vertentry:
|
||
|
|
if((uint32_t)yintercept>mapheight*65536-1 || (word)xtile>=mapwidth)
|
||
|
|
{
|
||
|
|
if(xtile<0) xintercept=0, xtile=0;
|
||
|
|
else if(xtile>=mapwidth) xintercept=mapwidth<<TILESHIFT, xtile=mapwidth-1;
|
||
|
|
else xtile=(short) (xintercept >> TILESHIFT);
|
||
|
|
if(yintercept<0) yintercept=0, ytile=0;
|
||
|
|
else if(yintercept>=(mapheight<<TILESHIFT)) yintercept=mapheight<<TILESHIFT, ytile=mapheight-1;
|
||
|
|
yspot=0xffff;
|
||
|
|
tilehit=0;
|
||
|
|
HitHorizBorder();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if(xspot>=maparea) break;
|
||
|
|
tilehit=((byte *)tilemap)[xspot];
|
||
|
|
if(tilehit)
|
||
|
|
{
|
||
|
|
if(tilehit&0x80)
|
||
|
|
{
|
||
|
|
int32_t yintbuf=yintercept+(ystep>>1);
|
||
|
|
if((yintbuf>>16)!=(yintercept>>16))
|
||
|
|
goto passvert;
|
||
|
|
if((word)yintbuf<doorposition[tilehit&0x7f])
|
||
|
|
goto passvert;
|
||
|
|
yintercept=yintbuf;
|
||
|
|
xintercept=(xtile<<TILESHIFT)|0x8000;
|
||
|
|
ytile = (short) (yintercept >> TILESHIFT);
|
||
|
|
HitVertDoor();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if(tilehit==64)
|
||
|
|
{
|
||
|
|
if(pwalldir==di_west || pwalldir==di_east)
|
||
|
|
{
|
||
|
|
int32_t yintbuf;
|
||
|
|
int pwallposnorm;
|
||
|
|
int pwallposinv;
|
||
|
|
if(pwalldir==di_west)
|
||
|
|
{
|
||
|
|
pwallposnorm = 64-pwallpos;
|
||
|
|
pwallposinv = pwallpos;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
pwallposnorm = pwallpos;
|
||
|
|
pwallposinv = 64-pwallpos;
|
||
|
|
}
|
||
|
|
if(pwalldir == di_east && xtile==pwallx && ((uint32_t)yintercept>>16)==pwally
|
||
|
|
|| pwalldir == di_west && !(xtile==pwallx && ((uint32_t)yintercept>>16)==pwally))
|
||
|
|
{
|
||
|
|
yintbuf=yintercept+((ystep*pwallposnorm)>>6);
|
||
|
|
if((yintbuf>>16)!=(yintercept>>16))
|
||
|
|
goto passvert;
|
||
|
|
|
||
|
|
xintercept=(xtile<<TILESHIFT)+TILEGLOBAL-(pwallposinv<<10);
|
||
|
|
yintercept=yintbuf;
|
||
|
|
ytile = (short) (yintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitVertWall();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
yintbuf=yintercept+((ystep*pwallposinv)>>6);
|
||
|
|
if((yintbuf>>16)!=(yintercept>>16))
|
||
|
|
goto passvert;
|
||
|
|
|
||
|
|
xintercept=(xtile<<TILESHIFT)-(pwallposinv<<10);
|
||
|
|
yintercept=yintbuf;
|
||
|
|
ytile = (short) (yintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitVertWall();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
int pwallposi = pwallpos;
|
||
|
|
if(pwalldir==di_north) pwallposi = 64-pwallpos;
|
||
|
|
if(pwalldir==di_south && (word)yintercept<(pwallposi<<10)
|
||
|
|
|| pwalldir==di_north && (word)yintercept>(pwallposi<<10))
|
||
|
|
{
|
||
|
|
if(((uint32_t)yintercept>>16)==pwally && xtile==pwallx)
|
||
|
|
{
|
||
|
|
if(pwalldir==di_south && (int32_t)((word)yintercept)+ystep<(pwallposi<<10)
|
||
|
|
|| pwalldir==di_north && (int32_t)((word)yintercept)+ystep>(pwallposi<<10))
|
||
|
|
goto passvert;
|
||
|
|
|
||
|
|
if(pwalldir==di_south)
|
||
|
|
yintercept=(yintercept&0xffff0000)+(pwallposi<<10);
|
||
|
|
else
|
||
|
|
yintercept=(yintercept&0xffff0000)-TILEGLOBAL+(pwallposi<<10);
|
||
|
|
xintercept=xintercept-((xstep*(64-pwallpos))>>6);
|
||
|
|
xtile = (short) (xintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitHorizWall();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
texdelta = -(pwallposi<<10);
|
||
|
|
xintercept=xtile<<TILESHIFT;
|
||
|
|
ytile = (short) (yintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitVertWall();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if(((uint32_t)yintercept>>16)==pwally && xtile==pwallx)
|
||
|
|
{
|
||
|
|
texdelta = -(pwallposi<<10);
|
||
|
|
xintercept=xtile<<TILESHIFT;
|
||
|
|
ytile = (short) (yintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitVertWall();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if(pwalldir==di_south && (int32_t)((word)yintercept)+ystep>(pwallposi<<10)
|
||
|
|
|| pwalldir==di_north && (int32_t)((word)yintercept)+ystep<(pwallposi<<10))
|
||
|
|
goto passvert;
|
||
|
|
|
||
|
|
if(pwalldir==di_south)
|
||
|
|
yintercept=(yintercept&0xffff0000)-((64-pwallpos)<<10);
|
||
|
|
else
|
||
|
|
yintercept=(yintercept&0xffff0000)+((64-pwallpos)<<10);
|
||
|
|
xintercept=xintercept-((xstep*pwallpos)>>6);
|
||
|
|
xtile = (short) (xintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitHorizWall();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
xintercept=xtile<<TILESHIFT;
|
||
|
|
ytile = (short) (yintercept >> TILESHIFT);
|
||
|
|
HitVertWall();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
passvert:
|
||
|
|
*((byte *)spotvis+xspot)=1;
|
||
|
|
xtile+=xtilestep;
|
||
|
|
yintercept+=ystep;
|
||
|
|
xspot=(word)((xtile<<mapshift)+((uint32_t)yintercept>>16));
|
||
|
|
}
|
||
|
|
while(1);
|
||
|
|
continue;
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
if(xtilestep==-1 && (xintercept>>16)<=xtile) goto vertentry;
|
||
|
|
if(xtilestep==1 && (xintercept>>16)>=xtile) goto vertentry;
|
||
|
|
horizentry:
|
||
|
|
if((uint32_t)xintercept>mapwidth*65536-1 || (word)ytile>=mapheight)
|
||
|
|
{
|
||
|
|
if(ytile<0) yintercept=0, ytile=0;
|
||
|
|
else if(ytile>=mapheight) yintercept=mapheight<<TILESHIFT, ytile=mapheight-1;
|
||
|
|
else ytile=(short) (yintercept >> TILESHIFT);
|
||
|
|
if(xintercept<0) xintercept=0, xtile=0;
|
||
|
|
else if(xintercept>=(mapwidth<<TILESHIFT)) xintercept=mapwidth<<TILESHIFT, xtile=mapwidth-1;
|
||
|
|
xspot=0xffff;
|
||
|
|
tilehit=0;
|
||
|
|
HitVertBorder();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if(yspot>=maparea) break;
|
||
|
|
tilehit=((byte *)tilemap)[yspot];
|
||
|
|
if(tilehit)
|
||
|
|
{
|
||
|
|
if(tilehit&0x80)
|
||
|
|
{
|
||
|
|
int32_t xintbuf=xintercept+(xstep>>1);
|
||
|
|
if((xintbuf>>16)!=(xintercept>>16))
|
||
|
|
goto passhoriz;
|
||
|
|
if((word)xintbuf<doorposition[tilehit&0x7f])
|
||
|
|
goto passhoriz;
|
||
|
|
xintercept=xintbuf;
|
||
|
|
yintercept=(ytile<<TILESHIFT)+0x8000;
|
||
|
|
xtile = (short) (xintercept >> TILESHIFT);
|
||
|
|
HitHorizDoor();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if(tilehit==64)
|
||
|
|
{
|
||
|
|
if(pwalldir==di_north || pwalldir==di_south)
|
||
|
|
{
|
||
|
|
int32_t xintbuf;
|
||
|
|
int pwallposnorm;
|
||
|
|
int pwallposinv;
|
||
|
|
if(pwalldir==di_north)
|
||
|
|
{
|
||
|
|
pwallposnorm = 64-pwallpos;
|
||
|
|
pwallposinv = pwallpos;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
pwallposnorm = pwallpos;
|
||
|
|
pwallposinv = 64-pwallpos;
|
||
|
|
}
|
||
|
|
if(pwalldir == di_south && ytile==pwally && ((uint32_t)xintercept>>16)==pwallx
|
||
|
|
|| pwalldir == di_north && !(ytile==pwally && ((uint32_t)xintercept>>16)==pwallx))
|
||
|
|
{
|
||
|
|
xintbuf=xintercept+((xstep*pwallposnorm)>>6);
|
||
|
|
if((xintbuf>>16)!=(xintercept>>16))
|
||
|
|
goto passhoriz;
|
||
|
|
|
||
|
|
yintercept=(ytile<<TILESHIFT)+TILEGLOBAL-(pwallposinv<<10);
|
||
|
|
xintercept=xintbuf;
|
||
|
|
xtile = (short) (xintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitHorizWall();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
xintbuf=xintercept+((xstep*pwallposinv)>>6);
|
||
|
|
if((xintbuf>>16)!=(xintercept>>16))
|
||
|
|
goto passhoriz;
|
||
|
|
|
||
|
|
yintercept=(ytile<<TILESHIFT)-(pwallposinv<<10);
|
||
|
|
xintercept=xintbuf;
|
||
|
|
xtile = (short) (xintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitHorizWall();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
int pwallposi = pwallpos;
|
||
|
|
if(pwalldir==di_west) pwallposi = 64-pwallpos;
|
||
|
|
if(pwalldir==di_east && (word)xintercept<(pwallposi<<10)
|
||
|
|
|| pwalldir==di_west && (word)xintercept>(pwallposi<<10))
|
||
|
|
{
|
||
|
|
if(((uint32_t)xintercept>>16)==pwallx && ytile==pwally)
|
||
|
|
{
|
||
|
|
if(pwalldir==di_east && (int32_t)((word)xintercept)+xstep<(pwallposi<<10)
|
||
|
|
|| pwalldir==di_west && (int32_t)((word)xintercept)+xstep>(pwallposi<<10))
|
||
|
|
goto passhoriz;
|
||
|
|
|
||
|
|
if(pwalldir==di_east)
|
||
|
|
xintercept=(xintercept&0xffff0000)+(pwallposi<<10);
|
||
|
|
else
|
||
|
|
xintercept=(xintercept&0xffff0000)-TILEGLOBAL+(pwallposi<<10);
|
||
|
|
yintercept=yintercept-((ystep*(64-pwallpos))>>6);
|
||
|
|
ytile = (short) (yintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitVertWall();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
texdelta = -(pwallposi<<10);
|
||
|
|
yintercept=ytile<<TILESHIFT;
|
||
|
|
xtile = (short) (xintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitHorizWall();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if(((uint32_t)xintercept>>16)==pwallx && ytile==pwally)
|
||
|
|
{
|
||
|
|
texdelta = -(pwallposi<<10);
|
||
|
|
yintercept=ytile<<TILESHIFT;
|
||
|
|
xtile = (short) (xintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitHorizWall();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if(pwalldir==di_east && (int32_t)((word)xintercept)+xstep>(pwallposi<<10)
|
||
|
|
|| pwalldir==di_west && (int32_t)((word)xintercept)+xstep<(pwallposi<<10))
|
||
|
|
goto passhoriz;
|
||
|
|
|
||
|
|
if(pwalldir==di_east)
|
||
|
|
xintercept=(xintercept&0xffff0000)-((64-pwallpos)<<10);
|
||
|
|
else
|
||
|
|
xintercept=(xintercept&0xffff0000)+((64-pwallpos)<<10);
|
||
|
|
yintercept=yintercept-((ystep*pwallpos)>>6);
|
||
|
|
ytile = (short) (yintercept >> TILESHIFT);
|
||
|
|
tilehit=pwalltile;
|
||
|
|
HitVertWall();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
yintercept=ytile<<TILESHIFT;
|
||
|
|
xtile = (short) (xintercept >> TILESHIFT);
|
||
|
|
HitHorizWall();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
passhoriz:
|
||
|
|
*((byte *)spotvis+yspot)=1;
|
||
|
|
ytile+=ytilestep;
|
||
|
|
xintercept+=xstep;
|
||
|
|
yspot=(word)((((uint32_t)xintercept>>16)<<mapshift)+ytile);
|
||
|
|
}
|
||
|
|
while(1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
====================
|
||
|
|
=
|
||
|
|
= WallRefresh
|
||
|
|
=
|
||
|
|
====================
|
||
|
|
*/
|
||
|
|
|
||
|
|
void WallRefresh (void)
|
||
|
|
{
|
||
|
|
xpartialdown = viewx&(TILEGLOBAL-1);
|
||
|
|
xpartialup = TILEGLOBAL-xpartialdown;
|
||
|
|
ypartialdown = viewy&(TILEGLOBAL-1);
|
||
|
|
ypartialup = TILEGLOBAL-ypartialdown;
|
||
|
|
|
||
|
|
min_wallheight = viewheight;
|
||
|
|
lastside = -1; // the first pixel is on a new wall
|
||
|
|
AsmRefresh ();
|
||
|
|
ScalePost (); // no more optimization on last post
|
||
|
|
}
|
||
|
|
|
||
|
|
void CalcViewVariables()
|
||
|
|
{
|
||
|
|
viewangle = player->angle;
|
||
|
|
midangle = viewangle*(FINEANGLES/ANGLES);
|
||
|
|
viewsin = sintable[viewangle];
|
||
|
|
viewcos = costable[viewangle];
|
||
|
|
viewx = player->x - FixedMul(focallength,viewcos);
|
||
|
|
viewy = player->y + FixedMul(focallength,viewsin);
|
||
|
|
|
||
|
|
focaltx = (short)(viewx>>TILESHIFT);
|
||
|
|
focalty = (short)(viewy>>TILESHIFT);
|
||
|
|
|
||
|
|
viewtx = (short)(player->x >> TILESHIFT);
|
||
|
|
viewty = (short)(player->y >> TILESHIFT);
|
||
|
|
}
|
||
|
|
|
||
|
|
//==========================================================================
|
||
|
|
|
||
|
|
/*
|
||
|
|
========================
|
||
|
|
=
|
||
|
|
= ThreeDRefresh
|
||
|
|
=
|
||
|
|
========================
|
||
|
|
*/
|
||
|
|
|
||
|
|
void ThreeDRefresh (void)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// clear out the traced array
|
||
|
|
//
|
||
|
|
memset(spotvis,0,maparea);
|
||
|
|
spotvis[player->tilex][player->tiley] = 1; // Detect all sprites over player fix
|
||
|
|
|
||
|
|
vbuf = VL_LockSurface(screenBuffer);
|
||
|
|
if(vbuf == NULL) return;
|
||
|
|
|
||
|
|
vbuf += screenofs;
|
||
|
|
vbufPitch = bufferPitch;
|
||
|
|
|
||
|
|
CalcViewVariables();
|
||
|
|
|
||
|
|
//
|
||
|
|
// follow the walls from there to the right, drawing as we go
|
||
|
|
//
|
||
|
|
VGAClearScreen ();
|
||
|
|
#if defined(USE_FEATUREFLAGS) && defined(USE_STARSKY)
|
||
|
|
if(GetFeatureFlags() & FF_STARSKY)
|
||
|
|
DrawStarSky(vbuf, vbufPitch);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
WallRefresh ();
|
||
|
|
|
||
|
|
#if defined(USE_FEATUREFLAGS) && defined(USE_PARALLAX)
|
||
|
|
if(GetFeatureFlags() & FF_PARALLAXSKY)
|
||
|
|
DrawParallax(vbuf, vbufPitch);
|
||
|
|
#endif
|
||
|
|
#if defined(USE_FEATUREFLAGS) && defined(USE_CLOUDSKY)
|
||
|
|
if(GetFeatureFlags() & FF_CLOUDSKY)
|
||
|
|
DrawClouds(vbuf, vbufPitch, min_wallheight);
|
||
|
|
#endif
|
||
|
|
#ifdef USE_FLOORCEILINGTEX
|
||
|
|
DrawFloorAndCeiling(vbuf, vbufPitch, min_wallheight);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//
|
||
|
|
// draw all the scaled images
|
||
|
|
//
|
||
|
|
DrawScaleds(); // draw scaled stuff
|
||
|
|
|
||
|
|
#if defined(USE_FEATUREFLAGS) && defined(USE_RAIN)
|
||
|
|
if(GetFeatureFlags() & FF_RAIN)
|
||
|
|
DrawRain(vbuf, vbufPitch);
|
||
|
|
#endif
|
||
|
|
#if defined(USE_FEATUREFLAGS) && defined(USE_SNOW)
|
||
|
|
if(GetFeatureFlags() & FF_SNOW)
|
||
|
|
DrawSnow(vbuf, vbufPitch);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
DrawPlayerWeapon (); // draw player's hands
|
||
|
|
|
||
|
|
if(Keyboard[sc_Tab] && viewsize == 21 && gamestate.weapon != -1)
|
||
|
|
ShowActStatus();
|
||
|
|
|
||
|
|
VL_UnlockSurface(screenBuffer);
|
||
|
|
vbuf = NULL;
|
||
|
|
|
||
|
|
//
|
||
|
|
// show screen and time last cycle
|
||
|
|
//
|
||
|
|
|
||
|
|
if (fizzlein)
|
||
|
|
{
|
||
|
|
FizzleFade(screenBuffer, 0, 0, screenWidth, screenHeight, 20, false);
|
||
|
|
fizzlein = false;
|
||
|
|
|
||
|
|
lasttimecount = GetTimeCount(); // don't make a big tic count
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
#ifndef REMDEBUG
|
||
|
|
if (fpscounter)
|
||
|
|
{
|
||
|
|
fontnumber = 0;
|
||
|
|
SETFONTCOLOR(7,127);
|
||
|
|
PrintX=4; PrintY=1;
|
||
|
|
VWB_Bar(0,0,50,10,bordercol);
|
||
|
|
US_PrintSigned(fps);
|
||
|
|
US_Print(" fps");
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
SDL_BlitSurface(screenBuffer, NULL, screen, NULL);
|
||
|
|
SDL_Flip(screen);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef REMDEBUG
|
||
|
|
if (fpscounter)
|
||
|
|
{
|
||
|
|
fps_frames++;
|
||
|
|
fps_time+=tics;
|
||
|
|
|
||
|
|
if(fps_time>35)
|
||
|
|
{
|
||
|
|
fps_time-=35;
|
||
|
|
fps=fps_frames<<1;
|
||
|
|
fps_frames=0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|