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55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
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#ifndef _PORTALS_H_
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#define _PORTALS_H_
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#include "basictypes.h"
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#include "v_video.h"
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#include "r_defs.h"
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#include "actor.h"
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#include "p_local.h"
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#include "m_bbox.h"
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/* code ported from prototype */
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bool P_ClipLineToPortal(line_t* line, line_t* portal, fixed_t viewx, fixed_t viewy, bool partial = true, bool samebehind = true);
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bool P_CheckPortal(line_t* line);
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void P_TranslatePortalXY(line_t* src, line_t* dst, fixed_t& x, fixed_t& y);
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void P_TranslatePortalVXVY(line_t* src, line_t* dst, fixed_t& vx, fixed_t& vy);
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void P_TranslatePortalAngle(line_t* src, line_t* dst, angle_t& angle);
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void P_TranslatePortalZ(line_t* src, line_t* dst, fixed_t& z);
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void P_NormalizeVXVY(fixed_t& vx, fixed_t& vy);
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// basically, this is a teleporting tracer function,
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// which can be used by itself (to calculate portal-aware offsets, say, for projectiles)
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// or to teleport normal tracers (like hitscan, railgun, autoaim tracers)
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class PortalTracer
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{
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public:
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PortalTracer(fixed_t startx, fixed_t starty, fixed_t endx, fixed_t endy);
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// trace to next portal
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bool TraceStep();
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// trace to last available portal on the path
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void TraceAll() { while (TraceStep()) continue; }
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int depth;
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fixed_t startx;
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fixed_t starty;
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fixed_t intx;
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fixed_t inty;
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fixed_t intxIn;
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fixed_t intyIn;
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fixed_t endx;
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fixed_t endy;
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angle_t angle;
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fixed_t z;
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fixed_t frac;
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line_t* in;
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line_t* out;
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fixed_t vx;
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fixed_t vy;
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};
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/* new code */
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fixed_t P_PointLineDistance(line_t* line, fixed_t x, fixed_t y);
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#endif
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