ReC98/ReC98.h

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/* ReC98
* -----
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* Main include file
*/
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#include <master.h>
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#include <stddef.h>
#include "pc98.h"
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// master.lib extensions
// ---------------------
#define palette_entry_rgb_show(fn) \
palette_entry_rgb(fn); \
palette_show();
// RGB color triple, used for the Palettes structure
typedef union {
struct {
unsigned char r, g, b;
} c;
unsigned char v[3];
} rgb_t;
typedef struct {
rgb_t colors[16];
} palette_t;
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// ---------------------
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// Macros
// ------
#define CLAMP_INC(val, max) \
(val)++; \
if((val) > (max)) { \
(val) = (max); \
}
#define CLAMP_DEC(val, min) \
(val)--; \
if((val) < (min)) { \
(val) = (min); \
}
#define RING_INC(val, ring_end) \
(val)++; \
if((val) > (ring_end)) { \
(val) = 0; \
}
#define RING_DEC(val, ring_end) \
(val)--; \
if((val) < 0) { \
(val) = ring_end; \
}
// Resident structure
#define RES_ID_LEN sizeof(RES_ID)
#define RES_ID_STRLEN (RES_ID_LEN - 1)
#define RES_PARASIZE ((sizeof(resident_t) + 0xF) >> 4)
// ------
typedef union {
struct {
char lo, hi;
} byte;
int v;
} twobyte_t;
/// Typedefs
/// --------
// Generic callback function types. Note the difference between function
// distance (nearfunc / farfunc) and pointer variable distance
// (t_near / t_far).
typedef void (near pascal *near nearfunc_t_near)(void);
typedef void ( far pascal *near farfunc_t_near)(void);
typedef void (near pascal * far nearfunc_t_far)(void);
typedef void ( far pascal * far farfunc_t_far)(void);
/// --------
// PC-98 VRAM planes
// -----------------
typedef enum {
PL_B, PL_R, PL_G, PL_E, PL_COUNT
} vram_plane_t;
typedef struct {
char B, R, G, E;
} vram_planar_8_pixels_t;
typedef struct {
int B, R, G, E;
} vram_planar_16_pixels_t;
// Since array subscripts create slightly different assembly in places, we
// offer both variants.
extern char *VRAM_PLANE[PL_COUNT];
extern char *VRAM_PLANE_B;
extern char *VRAM_PLANE_G;
extern char *VRAM_PLANE_R;
extern char *VRAM_PLANE_E;
#define PLANE_DWORD_BLIT(dst, src) \
for(p = 0; p < PLANE_SIZE; p += 4) { \
*(long*)((dst) + p) = *(long*)((src) + p); \
}
#define VRAM_OFFSET(x, y) ((x) >> 3) + (y << 6) + (y << 4)
void pascal vram_planes_set(void);
// -----------------