mirror of
https://github.com/pevans/erc-c.git
synced 2024-10-15 15:24:24 +00:00
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
#ifndef _VM_AREA_H_
|
|
#define _VM_AREA_H_
|
|
|
|
typedef struct {
|
|
/*
|
|
* These are the x and y coordinate offsets in the logical dimension
|
|
* established in a vm_screen. An offset of (0, 0) would be in the
|
|
* top-left; (5, 5) would be 5 pixels down, and 5 pixels to the
|
|
* right, of that top-left corner.
|
|
*/
|
|
int xoff;
|
|
int yoff;
|
|
|
|
/*
|
|
* These are the width and height of the area we're defining. A
|
|
* single pixel in the logical area would have a width and height of
|
|
* (1, 1); use larger numbers to indicate a larger square (if the
|
|
* two are equal) or rectangle (if unequal).
|
|
*/
|
|
int width;
|
|
int height;
|
|
} vm_area;
|
|
|
|
/*
|
|
* Set the contents of an SDL_Rect to the equivalent fields contained in
|
|
* a vm_area.
|
|
*/
|
|
#define SET_SDL_RECT(name, a) \
|
|
(name).x = (a).xoff; \
|
|
(name).y = (a).yoff; \
|
|
(name).w = (a).width; \
|
|
(name).h = (a).height
|
|
|
|
/*
|
|
* Much like SET_SDL_RECT(), except this will (as a side-effect!)
|
|
* declare an SDL_Rect variable (`name`) and pass that into the SET
|
|
* macro.
|
|
*/
|
|
#define MAKE_SDL_RECT(name, a) \
|
|
SDL_Rect name; \
|
|
SET_SDL_RECT(name, a)
|
|
|
|
extern void vm_area_set(vm_area *, int, int, int, int);
|
|
|
|
#endif
|