58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
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/*
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* AStar.h
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*
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*/
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#ifndef _AStar_h
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#define _AStar_h
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// the buffer to store a route in
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#define ASTAR_MAXROUTE 50
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typedef struct _astar_route
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{
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POINT asPos[ASTAR_MAXROUTE];
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SDWORD finalX,finalY,numPoints;
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} ASTAR_ROUTE;
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// Sizes for the node heap
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#define FPATH_NODEINIT 600
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#define FPATH_NODEEXT 0
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// counters for a-star
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extern SDWORD astarInner,astarOuter, astarRemove;
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// reset the astar counters
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extern void astarResetCounters(void);
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// Initialise the findpath routine
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extern BOOL astarInitialise(void);
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// Shutdown the findpath routine
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extern void fpathShutDown(void);
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// return codes for astar
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enum
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{
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ASR_OK, // found a route
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ASR_FAILED, // no route
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ASR_PARTIAL, // routing cannot be finished this frame
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// and should be continued the next frame
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ASR_NEAREST, // found a partial route to a nearby position
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};
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// route modes for astar
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enum
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{
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ASR_NEWROUTE, // start a new route
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ASR_CONTINUE, // continue a route that was partially completed the last frame
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};
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// A* findpath
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extern SDWORD fpathAStarRoute(SDWORD routeMode, ASTAR_ROUTE *psRoutePoints,
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SDWORD sx, SDWORD sy, SDWORD fx, SDWORD fy);
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// Check los between two tiles
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extern BOOL fpathTileLOS(SDWORD x1,SDWORD y1, SDWORD x2,SDWORD y2);
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#endif
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