76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
#include "input.h"
|
|
#include "debug.h"
|
|
#include "list.h"
|
|
#include <stdint.h>
|
|
|
|
typedef struct InputAction {
|
|
const uint8_t* positive;
|
|
const uint8_t* negative;
|
|
int last;
|
|
void* object_arg;
|
|
InputActionDelegate delegate;
|
|
} InputAction;
|
|
|
|
static List _actions;
|
|
|
|
static const uint8_t* _keys;
|
|
|
|
void input_init() {
|
|
_actions = list_from_type(InputAction);
|
|
_keys = SDL_GetKeyboardState(NULL);
|
|
}
|
|
|
|
void input_clean() {
|
|
list_empty(&_actions);
|
|
}
|
|
|
|
static
|
|
void _key_changed_event(SDL_Event evt) {
|
|
const uint8_t* keyptr = _keys + evt.key.keysym.scancode;
|
|
list_foreach(InputAction, action, &_actions) {
|
|
if(keyptr == action->positive || keyptr == action->negative) {
|
|
int val = *action->positive - *action->negative;
|
|
if(val != action->last) {
|
|
action->last = val;
|
|
action->delegate(action->object_arg, val);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void input_handle_event(SDL_Event event) {
|
|
switch(event.type) {
|
|
default:return;
|
|
case SDL_KEYDOWN:
|
|
case SDL_KEYUP:
|
|
_key_changed_event(event);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void input_add_axis_action(void* object, InputActionDelegate delegate, SDL_Scancode negative, SDL_Scancode positive) {
|
|
list_add(&_actions, &(InputAction){
|
|
.negative = _keys + negative,
|
|
.positive = _keys + positive,
|
|
.delegate = delegate,
|
|
.object_arg = object,
|
|
});
|
|
}
|
|
|
|
void input_add_key_action(void* object, InputActionDelegate delegate, SDL_Scancode key) {
|
|
list_add(&_actions, &(InputAction) {
|
|
.negative = _keys + SDL_SCANCODE_UNKNOWN,
|
|
.positive = _keys + key,
|
|
.delegate = delegate,
|
|
.object_arg = object,
|
|
});
|
|
}
|
|
|
|
void input_remove_actions(void* object) {
|
|
for(size_t i = 0; i < _actions.len; ++i) {
|
|
if(list_at_as(InputAction, &_actions, i)->object_arg == object) {
|
|
list_erase(&_actions, i);
|
|
}
|
|
}
|
|
}
|