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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,89 +1,89 @@ | ||
| /***************************************************************** | ||
| Engine.H | ||
| Game Engine Structures | ||
| *****************************************************************/ | ||
|
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| #ifndef ENGINE_H | ||
| #define ENGINE_H | ||
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| #define MAX_FRAMES 100 /* MAXIMUM FRAMES PER DESC */ | ||
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| typedef long fixed28; | ||
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| typedef unsigned char uchar; | ||
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| // STRUCTURE DEFINITIONS... | ||
| // 2D POINT TYPE FOR SECTORS...FIXED POINT X AND Y | ||
| typedef struct POINT2D | ||
| { | ||
| long x, y; | ||
| } tPoint2D; | ||
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| typedef struct POINT3D | ||
| { | ||
| long x, y, z; | ||
| } tPoint3D; | ||
|
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| /***************************************** | ||
| INSIDE SECTOR STRUCTURE: | ||
| *****************************************/ | ||
|
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| /* quadrant id's, incremental angles, accumulated angle values */ | ||
| typedef short quadrant_type; | ||
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| /* result value from point in polygon test */ | ||
| typedef enum pt_poly_relation {INSIDE, OUTSIDE} pt_poly_relation; | ||
|
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| /* determine the quadrant of a polygon point | ||
| relative to the test point */ | ||
| #define quadrant(vertex, x, y) \ | ||
| ( (vertex.x > x) ? ((vertex.y > y) ? 0 : 3) : ( (vertex.y > y) ? 1 : 2) ) | ||
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| /* determine x intercept of a polygon edge | ||
| with a horizontal line at the y value of the test point */ | ||
| #define x_intercept(pt1, pt2, yy) \ | ||
| (pt2.x - ( ((pt2.y - yy) * (pt1.x - pt2.x)) / (pt1.y - pt2.y) ) ) | ||
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| /* adjust delta */ | ||
| #define adjust_delta(delta, vertex, next_vertex, xx, yy) \ | ||
| switch (delta) { \ | ||
| /* make quadrant deltas wrap around */ \ | ||
| case 3: delta = -1; break; \ | ||
| case -3: delta = 1; break; \ | ||
| /* check if went around point cw or ccw */ \ | ||
| case 2: case -2: if (x_intercept(vertex, next_vertex, yy) > xx) \ | ||
| delta = - (delta); \ | ||
| break; \ | ||
| } | ||
|
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|
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| /* 2D EDGE STRUCTURE */ | ||
| typedef struct { | ||
| tPoint2D pos; /* Coords of Start */ | ||
| short nextedge,prevedge,backedge; | ||
| short sector,backsector; | ||
| short tex1,tex2; | ||
| uchar Uoff,Voff,Uscale,Vscale; | ||
| long shade; | ||
| long flags; | ||
| long pad1,pad2,pad3; | ||
| } tEdge; | ||
|
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| #define SECTOR_FLAGS_CLOSED 1 | ||
| #define SECTOR_FLAGS_VISITED 2 | ||
|
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| /* 2D SECTOR STRUCTURE */ | ||
| typedef struct { | ||
| short edge,edgecnt; /* FIRST EDGE # and COUNT */ | ||
| long ceil_height,floor_height; | ||
| short floor_flags,floor_tex; | ||
| uchar floor_Uoff,floor_Voff,floor_Uscale,floor_Vscale; | ||
| long floor_shade; | ||
| short ceil_flags,ceil_tex; | ||
| uchar ceil_Uoff,ceil_Voff,ceil_Uscale,ceil_Vscale; | ||
| long ceil_shade; | ||
| long flags,pad2,pad3; // FOR LATER EXPANSION | ||
| } tSector; | ||
|
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||
| /***************************************************************** | ||
| Engine.H | ||
| Game Engine Structures | ||
| *****************************************************************/ | ||
|
|
||
| #ifndef ENGINE_H | ||
| #define ENGINE_H | ||
|
|
||
| #define MAX_FRAMES 100 /* MAXIMUM FRAMES PER DESC */ | ||
|
|
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| typedef long fixed28; | ||
|
|
||
| typedef unsigned char uchar; | ||
|
|
||
| // STRUCTURE DEFINITIONS... | ||
| // 2D POINT TYPE FOR SECTORS...FIXED POINT X AND Y | ||
| typedef struct POINT2D | ||
| { | ||
| long x, y; | ||
| } tPoint2D; | ||
|
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||
| typedef struct POINT3D | ||
| { | ||
| long x, y, z; | ||
| } tPoint3D; | ||
|
|
||
| /***************************************** | ||
| INSIDE SECTOR STRUCTURE: | ||
| *****************************************/ | ||
|
|
||
| /* quadrant id's, incremental angles, accumulated angle values */ | ||
| typedef short quadrant_type; | ||
|
|
||
| /* result value from point in polygon test */ | ||
| typedef enum pt_poly_relation {INSIDE, OUTSIDE} pt_poly_relation; | ||
|
|
||
| /* determine the quadrant of a polygon point | ||
| relative to the test point */ | ||
| #define quadrant(vertex, x, y) \ | ||
| ( (vertex.x > x) ? ((vertex.y > y) ? 0 : 3) : ( (vertex.y > y) ? 1 : 2) ) | ||
|
|
||
| /* determine x intercept of a polygon edge | ||
| with a horizontal line at the y value of the test point */ | ||
| #define x_intercept(pt1, pt2, yy) \ | ||
| (pt2.x - ( ((pt2.y - yy) * (pt1.x - pt2.x)) / (pt1.y - pt2.y) ) ) | ||
|
|
||
| /* adjust delta */ | ||
| #define adjust_delta(delta, vertex, next_vertex, xx, yy) \ | ||
| switch (delta) { \ | ||
| /* make quadrant deltas wrap around */ \ | ||
| case 3: delta = -1; break; \ | ||
| case -3: delta = 1; break; \ | ||
| /* check if went around point cw or ccw */ \ | ||
| case 2: case -2: if (x_intercept(vertex, next_vertex, yy) > xx) \ | ||
| delta = - (delta); \ | ||
| break; \ | ||
| } | ||
|
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||
|
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| /* 2D EDGE STRUCTURE */ | ||
| typedef struct { | ||
| tPoint2D pos; /* Coords of Start */ | ||
| short nextedge,prevedge,backedge; | ||
| short sector,backsector; | ||
| short tex1,tex2; | ||
| uchar Uoff,Voff,Uscale,Vscale; | ||
| long shade; | ||
| long flags; | ||
| long pad1,pad2,pad3; | ||
| } tEdge; | ||
|
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| #define SECTOR_FLAGS_CLOSED 1 | ||
| #define SECTOR_FLAGS_VISITED 2 | ||
|
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| /* 2D SECTOR STRUCTURE */ | ||
| typedef struct { | ||
| short edge,edgecnt; /* FIRST EDGE # and COUNT */ | ||
| long ceil_height,floor_height; | ||
| short floor_flags,floor_tex; | ||
| uchar floor_Uoff,floor_Voff,floor_Uscale,floor_Vscale; | ||
| long floor_shade; | ||
| short ceil_flags,ceil_tex; | ||
| uchar ceil_Uoff,ceil_Voff,ceil_Uscale,ceil_Vscale; | ||
| long ceil_shade; | ||
| long flags,pad2,pad3; // FOR LATER EXPANSION | ||
| } tSector; | ||
|
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| #endif |
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