Gered
865b466995
sources taken from book CD: ack_lib -> /ACK/WIN/ACK_LIB fdemo -> /ACK/DOS/FDEMO/SOURCE (and /ACK/DOS/BORLAND as needed) mall -> /ACK/DOS/MALL/SOURCE (and /ACK/DOS/BORLAND as needed) some source files were missing for the demo projects and needed to be copied from /ACK/DOS/BORLAND (as indicated above)
66 lines
2.8 KiB
C
66 lines
2.8 KiB
C
// ACKENG.H header file for supporting raycasting routines.
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// This file contains the main data structure named SLICE and definitions
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// required to support the raycasting routines. The data structures defined
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// in this file are not to be used directly by the programmer who is using
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// the functions in the ACK-3D library. To locate data structures for the
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// ACK-3D interface, see the file ACK3D.H.
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#define TRANS_WALLS 0
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#define FLOOR_ACTIVE 1
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#define USE_XMS 0 // Set to 0 if XMS not desired
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#define MAX_RBA 500 // Number of rba's in resource header
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// Fixed point constants used to perform fixed point calculations.
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#define FP_SHIFT 16
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#define FP_MULT 65536
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#define FP_HALF 32768
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#define VIEW_WIDTH 320 // The number of columns in a view (screen)
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#define MAX_DISTANCE 2048 // The max distance from the POV to a wall slice
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#define TYPE_WALL 0
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#define TYPE_OBJECT 1
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#define TYPE_PALETTE 2
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#define MAX_HEIGHT 960 // Maximum height of a wall
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#define MIN_HEIGHT 8 // Minimum height of a wall
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#define MAX_UPDOWN 30 // Max up or down spots for each level
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#define MAP_STARTCODE 0xFC // Force player to this square
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#define MAP_UPCODE 0xFD // Go up to previous level
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#define MAP_DOWNCODE 0xFE // Go down to next level
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#define MAP_GOALCODE 0xFF // Finish line!
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#define ST_WALL 1
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#define ST_OBJECT 2
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#define COLS_PER_BYTE 1 // Use 1 for normal mode 13h, 4 for modeX
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#define BYTES_PER_ROW 320 // Use 320 for normal mode 13h, 80 for modeX
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#define DWORDS_PER_ROW (BYTES_PER_ROW / 4)
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#define SCREEN_SIZE 64000
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// Holds information for the current wall section found during the raycasting process.
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// During the raycasting process, ACK-3D casts out rays, looks for a wall at a
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// given screen column position, and if a wall (slice) is found, information about
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// the slice is stored in this structure.
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typedef struct _slicer {
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UCHAR **bMap; // Pointer to wall bitmap found while ray casting
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UCHAR *mPtr; // Grid pointer to reference multi-height wall data
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short bNumber; // Bitmap number of the wall found
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unsigned short bColumn; // Screen column location of the found slice
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short Distance; // Distance from the POV to the slice
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short mPos; // Position of the slice in the associated map
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unsigned char Type; // Indicates if the slice is a wall or object
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void (*Fnc)(void); // Pointer to a function to draw wall or object
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unsigned char Active; // Indicates last slice in listif a wall or object is displayable or not
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// The next two pointers are used if the current slice
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// is part of a transparent wall
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struct _slicer *Prev; // References the wall slice in front of current slice
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struct _slicer *Next; // References the wall slice behind the current slice
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} SLICE;
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