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camcontrol: F8 to toggle mouse grab; ungrab on pause

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This commit is contained in:
Andrei Alexeyev 2021-11-20 14:40:37 +02:00
parent 3ccc0273a9
commit 9f58b8a7c3
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GPG key ID: 72D26128040B9690
3 changed files with 100 additions and 17 deletions
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113
src/camcontrol.c
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@ -41,6 +41,14 @@
#define CAMCTRL_KEY_ROLL_LEFT SDL_SCANCODE_Q
#define CAMCTRL_KEY_ROLL_RIGHT SDL_SCANCODE_E
#define CAMCTRL_KEY_TOGGLE_GRAB SDL_SCANCODE_F8
struct cc_state {
SDL_Window *w;
bool game_paused;
bool grab_enabled;
};
INLINE float normangle(float a) {
return a - 360.0f * floorf((a + 180.0f) / 360.0f);
}
@ -49,6 +57,31 @@ INLINE void addangle(float *a, float d) {
*a = normangle(*a + d);
}
static void set_mouse_grab(struct cc_state *s, bool enable) {
enable = enable && s->grab_enabled && !s->game_paused;
SDL_SetWindowGrab(s->w, enable);
SDL_CaptureMouse(enable);
SDL_SetRelativeMouseMode(enable);
SDL_EventState(SDL_MOUSEMOTION, enable);
SDL_EventState(SDL_MOUSEWHEEL, enable);
}
static bool keydown_event(SDL_Event *e, void *a) {
struct cc_state *s = a;
if(e->key.repeat) {
return false;
}
if(e->key.keysym.scancode == CAMCTRL_KEY_TOGGLE_GRAB) {
s->grab_enabled = !s->grab_enabled;
set_mouse_grab(s, s->grab_enabled);
}
return false;
}
static bool mouse_event(SDL_Event *e, void *a) {
Camera3D *cam = a;
@ -69,14 +102,21 @@ static bool wheel_event(SDL_Event *e, void *a) {
}
static bool focus_gained_event(SDL_Event *e, void *a) {
SDL_SetWindowGrab(a, true);
SDL_CaptureMouse(true);
struct cc_state *s = a;
set_mouse_grab(s, true);
return false;
}
static bool focus_lost_event(SDL_Event *e, void *a) {
SDL_SetWindowGrab(a, false);
SDL_CaptureMouse(false);
struct cc_state *s = a;
set_mouse_grab(s, false);
return false;
}
static bool pause_event(SDL_Event *e, void *a) {
struct cc_state *s = a;
s->game_paused = e->user.code;
set_mouse_grab(s, !s->game_paused);
return false;
}
@ -89,42 +129,74 @@ static void predraw(EntityInterface *ent, void *a) {
}
}
TASK(cleanup) {
TASK(cleanup, { struct cc_state *s; }) {
ent_unhook_pre_draw(predraw);
events_unregister_handler(keydown_event);
events_unregister_handler(mouse_event);
events_unregister_handler(wheel_event);
events_unregister_handler(focus_gained_event);
events_unregister_handler(focus_lost_event);
events_unregister_handler(pause_event);
set_mouse_grab(ARGS.s, false);
}
TASK(camera_control, { Camera3D *cam; }) {
Camera3D *cam = ARGS.cam;
INVOKE_TASK_AFTER(&TASK_EVENTS(THIS_TASK)->finished, cleanup);
SDL_Window *w = NOT_NULL(video_get_window());
SDL_SetWindowGrab(w, true);
SDL_CaptureMouse(true);
SDL_SetRelativeMouseMode(true);
SDL_EventState(SDL_MOUSEMOTION, SDL_ENABLE);
SDL_EventState(SDL_MOUSEWHEEL, SDL_ENABLE);
struct cc_state estate = { };
estate.w = NOT_NULL(video_get_window());
estate.grab_enabled = true;
set_mouse_grab(&estate, true);
INVOKE_TASK_AFTER(&TASK_EVENTS(THIS_TASK)->finished, cleanup, &estate);
float move_speed = CAMCTRL_MOVE_SPEED;
events_register_handler(
&(EventHandler) { .proc = mouse_event, .arg = cam, .event_type = SDL_MOUSEMOTION }
&(EventHandler) {
.proc = mouse_event,
.arg = cam,
.event_type = SDL_MOUSEMOTION,
}
);
events_register_handler(
&(EventHandler) { .proc = wheel_event, .arg = &move_speed, .event_type = SDL_MOUSEWHEEL }
&(EventHandler) {
.proc = wheel_event,
.arg = &move_speed,
.event_type = SDL_MOUSEWHEEL,
}
);
events_register_handler(
&(EventHandler) { .proc = focus_gained_event, .arg = w, .event_type = SDL_WINDOWEVENT_FOCUS_GAINED }
&(EventHandler) {
.proc = keydown_event,
.arg = &estate,
.event_type = SDL_KEYDOWN,
}
);
events_register_handler(
&(EventHandler) { .proc = focus_lost_event, .arg = w, .event_type = SDL_WINDOWEVENT_FOCUS_LOST }
&(EventHandler) {
.proc = focus_gained_event,
.arg = &estate,
.event_type = SDL_WINDOWEVENT_FOCUS_GAINED,
}
);
events_register_handler(
&(EventHandler) {
.proc = focus_lost_event,
.arg = &estate,
.event_type = SDL_WINDOWEVENT_FOCUS_LOST,
}
);
events_register_handler(
&(EventHandler) {
.proc = pause_event,
.arg = &estate,
.event_type = MAKE_TAISEI_EVENT(TE_GAME_PAUSE_STATE_CHANGED)
}
);
ent_hook_pre_draw(predraw, NULL);
@ -134,10 +206,17 @@ TASK(camera_control, { Camera3D *cam; }) {
NULL, I*font_get_lineskip(fnt)/2, ALIGN_LEFT, fnt, RGB(1,1,1), 0, 9000000, 0, 0
);
StageText *grabtxt = stagetext_add(
"Mouse input disabled ",
VIEWPORT_W + I*font_get_lineskip(fnt)/2, ALIGN_RIGHT, fnt, RGB(1,0.5,0), 0, 9000000, 0, 0
);
for(;;YIELD) {
int numkeys = 0;
const uint8_t *keys = SDL_GetKeyboardState(&numkeys);
grabtxt->text[0] = estate.grab_enabled ? 0 : 'M';
if(numkeys < 1) {
continue;
}

2
src/events.h
View file

@ -35,6 +35,8 @@ typedef enum {
TE_GAME_PAUSE,
#define TE_GAME_LAST TE_GAME_PAUSE
TE_GAME_PAUSE_STATE_CHANGED,
TE_GAMEPAD_BUTTON_DOWN,
TE_GAMEPAD_BUTTON_UP,
TE_GAMEPAD_AXIS,

2
src/stage.c
View file

@ -206,6 +206,7 @@ static void stage_leave_ingame_menu(CallChainResult ccr) {
}
} else {
resume_bgm(ctx);
events_emit(TE_GAME_PAUSE_STATE_CHANGED, false, NULL, NULL);
}
resume_all_sfx();
@ -215,6 +216,7 @@ static void stage_leave_ingame_menu(CallChainResult ccr) {
}
static void stage_enter_ingame_menu(MenuData *m, BGM *bgm, CallChain next) {
events_emit(TE_GAME_PAUSE_STATE_CHANGED, true, NULL, NULL);
IngameMenuContext *ctx = calloc(1, sizeof(*ctx));
ctx->next = next;
setup_ingame_menu_bgm(ctx, bgm);