Sara/fencer
1
0
Fork 0
Code Issues Pull requests Actions Packages Projects Releases Wiki Activity

cleared input module

Browse source
This commit is contained in:
Sara 2023-11-04 19:19:27 +01:00
parent c9dcb508bd
commit dc6a1acc34
2 changed files with 5 additions and 80 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

69
src/input.c
View file

@ -1,75 +1,10 @@
#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);
}
}
}

16
src/input.h
View file

@ -1,12 +1,12 @@
#ifndef _fencer_input_h
#define _fencer_input_h
#include "vmath.h"
#include "list.h"
#include <SDL2/SDL_events.h>
#include <SDL2/SDL_scancode.h>
#include <SDL2/SDL_keyboard.h>
// input listener
typedef void (*InputActionDelegate)(void* object, int value);
#include <SDL2/SDL_joystick.h>
extern void input_init();
extern void input_clean();
@ -14,14 +14,4 @@ extern void input_clean();
// handle an input event
extern void input_handle_event(SDL_Event event);
// create a new axis action triggering on a change of either 'negative' or 'positive' and invoking 'delegate' with first argument 'object'
extern void input_add_axis_action(void* object, InputActionDelegate delegate, SDL_Scancode negative, SDL_Scancode positive);
// create a new key action triggering on 'key' change invoking 'delegate' on 'object'.
extern void input_add_key_action(void* object, InputActionDelegate delegate, SDL_Scancode key);
// remove all actions related to 'object'.
extern void input_remove_actions(void* object);
#define InputDelegate(__Listener)\
((InputActionDelegate)&__Listener)
#endif // !_fencer_input_h