# HG changeset patch
# User Michael Pavone <pavone@retrodev.com>
# Date 1557384280 25200
# Node ID e07fc3d473b21bf975e4731620c56a221cfdfdd6
# Parent  fc05f49075c28978e7026e007529aeee9339c62c
Basic UI navigation with controller

diff -r fc05f49075c2 -r e07fc3d473b2 nuklear_ui/blastem_nuklear.c
--- a/nuklear_ui/blastem_nuklear.c	Fri May 03 18:56:12 2019 -0700
+++ b/nuklear_ui/blastem_nuklear.c	Wed May 08 23:44:40 2019 -0700
@@ -2001,6 +2001,7 @@
 
 void ui_idle_loop(void)
 {
+	render_enable_gamepad_events(1);
 	const uint32_t MIN_UI_DELAY = 15;
 	static uint32_t last;
 	while (current_view != view_play)
@@ -2017,6 +2018,7 @@
 		persist_config(config);
 		config_dirty = 0;
 	}
+	render_enable_gamepad_events(0);
 }
 static void handle_event(SDL_Event *event)
 {
diff -r fc05f49075c2 -r e07fc3d473b2 nuklear_ui/nuklear_sdl_gles2.h
--- a/nuklear_ui/nuklear_sdl_gles2.h	Fri May 03 18:56:12 2019 -0700
+++ b/nuklear_ui/nuklear_sdl_gles2.h	Wed May 08 23:44:40 2019 -0700
@@ -414,6 +414,30 @@
             else nk_input_key(ctx, NK_KEY_RIGHT, down);
         } else return 0;
         return 1;
+	} else if (evt->type == SDL_CONTROLLERBUTTONDOWN || evt->type == SDL_CONTROLLERBUTTONUP) {
+		int down = evt->type == SDL_CONTROLLERBUTTONDOWN;
+		if (evt->cbutton.button == SDL_CONTROLLER_BUTTON_DPAD_UP) {
+			nk_input_key(ctx, NK_KEY_UP, down);
+		} else if (evt->cbutton.button == SDL_CONTROLLER_BUTTON_DPAD_DOWN) {
+			nk_input_key(ctx, NK_KEY_DOWN, down);
+		} else if (evt->cbutton.button == SDL_CONTROLLER_BUTTON_A || evt->cbutton.button == SDL_CONTROLLER_BUTTON_START) {
+			nk_input_key(ctx, NK_KEY_ENTER, down);
+		}
+	} else if (evt->type == SDL_CONTROLLERAXISMOTION) {
+		if (evt->caxis.axis == SDL_CONTROLLER_AXIS_LEFTY || evt->caxis.axis ==  SDL_CONTROLLER_AXIS_RIGHTY) {
+			int down = abs(evt->caxis.value) > 2000;
+			if (evt->caxis.value >= 0) {
+				if (ctx->input.keyboard.keys[NK_KEY_UP].down) {
+					nk_input_key(ctx, NK_KEY_UP, 0);
+				}
+				nk_input_key(ctx, NK_KEY_DOWN, down);
+			} else {
+				if (ctx->input.keyboard.keys[NK_KEY_DOWN].down) {
+					nk_input_key(ctx, NK_KEY_DOWN, 0);
+				}
+				nk_input_key(ctx, NK_KEY_UP, down);
+			}
+		}
     } else if (evt->type == SDL_MOUSEBUTTONDOWN || evt->type == SDL_MOUSEBUTTONUP) {
         /* mouse button */
         int down = evt->type == SDL_MOUSEBUTTONDOWN;
diff -r fc05f49075c2 -r e07fc3d473b2 render_sdl.c
--- a/render_sdl.c	Fri May 03 18:56:12 2019 -0700
+++ b/render_sdl.c	Wed May 08 23:44:40 2019 -0700
@@ -921,12 +921,29 @@
 
 SDL_GameController *render_get_controller(int index)
 {
-	if (index >= MAX_JOYSTICKS) {
+	if (index >= MAX_JOYSTICKS || !joysticks[index]) {
 		return NULL;
 	}
 	return SDL_GameControllerOpen(joystick_sdl_index[index]);
 }
 
+static uint8_t gc_events_enabled;
+static SDL_GameController *controllers[MAX_JOYSTICKS];
+void render_enable_gamepad_events(uint8_t enabled)
+{
+	if (enabled != gc_events_enabled) {
+		gc_events_enabled = enabled;
+		for (int i = 0; i < MAX_JOYSTICKS; i++) {
+			if (enabled) {
+				controllers[i] = render_get_controller(i);
+			} else if (controllers[i]) {
+				SDL_GameControllerClose(controllers[i]);
+				controllers[i] = NULL;
+			}
+		}
+	}
+}
+
 static uint32_t overscan_top[NUM_VID_STD] = {2, 21};
 static uint32_t overscan_bot[NUM_VID_STD] = {1, 17};
 static uint32_t overscan_left[NUM_VID_STD] = {13, 13};
@@ -989,6 +1006,9 @@
 				SDL_Joystick * joy = joysticks[index] = SDL_JoystickOpen(event->jdevice.which);
 				joystick_sdl_index[index] = event->jdevice.which;
 				joystick_index_locked[index] = 0;
+				if (gc_events_enabled) {
+					controllers[index] = SDL_GameControllerOpen(event->jdevice.which);
+				}
 				if (joy) {
 					debug_message("Joystick %d added: %s\n", index, SDL_JoystickName(joy));
 					debug_message("\tNum Axes: %d\n\tNum Buttons: %d\n\tNum Hats: %d\n", SDL_JoystickNumAxes(joy), SDL_JoystickNumButtons(joy), SDL_JoystickNumHats(joy));
@@ -1002,6 +1022,10 @@
 		if (index >= 0) {
 			SDL_JoystickClose(joysticks[index]);
 			joysticks[index] = NULL;
+			if (controllers[index]) {
+				SDL_GameControllerClose(controllers[index]);
+				controllers[index] = NULL;
+			}
 			debug_message("Joystick %d removed\n", index);
 		} else {
 			debug_message("Failed to find removed joystick with instance ID: %d\n", index);
diff -r fc05f49075c2 -r e07fc3d473b2 render_sdl.h
--- a/render_sdl.h	Fri May 03 18:56:12 2019 -0700
+++ b/render_sdl.h	Wed May 08 23:44:40 2019 -0700
@@ -11,5 +11,6 @@
 SDL_GameController *render_get_controller(int index);
 int render_lookup_button(char *name);
 int render_lookup_axis(char *name);
+void render_enable_gamepad_events(uint8_t enabled);
 
 #endif //RENDER_SDL_H_