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erc-c/include/vm_screen.h
Peter Evans bf529d6c9b Finish map, mapper handling for keyboard events
We still need to revise the test code we currently have for handling
keyboard functions; I imagine some code will need to be removed.
2018-01-17 01:07:31 -06:00

59 lines
1.7 KiB
C

#ifndef _VM_SCREEN_H_
#define _VM_SCREEN_H_
#include <stdbool.h>
#include <SDL.h>
#include "vm_area.h"
#include "vm_bits.h"
typedef struct {
/*
* This is the window in SDL that we're displaying. It's fine for a
* screen to be headless; that is, not to have a window. Screen
* functions which deal with SDL will simply not run that code if
* headless.
*/
SDL_Window *window;
/*
* In SDL, the renderer is comparable to the old SDL_Surface type
* (which is still there!). A renderer is a little more stateful; it
* contains its own color information to be used when rendering
* shapes, for example.
*/
SDL_Renderer *render;
/*
* These are the x and y coordinates of the window we're creating.
* FIXME: this should probably be renamed to width and height...
*/
int xcoords;
int ycoords;
/*
* Hang onto the last key pressed and the status of whether a key
* is pressed right now or not.
*/
vm_8bit last_key;
bool key_pressed;
} vm_screen;
extern bool vm_screen_active(vm_screen *);
extern bool vm_screen_key_pressed(vm_screen *);
extern char vm_screen_last_key(vm_screen *);
extern int vm_screen_add_window(vm_screen *, int, int);
extern int vm_screen_init();
extern int vm_screen_xcoords(vm_screen *);
extern int vm_screen_ycoords(vm_screen *);
extern vm_screen *vm_screen_create();
extern void vm_screen_draw_rect(vm_screen *, vm_area *);
extern void vm_screen_finish();
extern void vm_screen_free(vm_screen *);
extern void vm_screen_refresh(vm_screen *);
extern void vm_screen_set_color(vm_screen *, uint8_t, uint8_t, uint8_t, uint8_t);
extern void vm_screen_set_logical_coords(vm_screen *, int, int);
#endif