Adds support for seed play (#158)

* Adds ability to copy the current seed to clipboard
* Adds text input support
* Seedling steam achievement

Author: LiquidityC

src/input.c

@@ -31,6 +31,7 @@ input_init(Input *input)
 	input->lastMouseY = 0;
 	input->modKeyState = 0;
 	input->lastModKeyState = 0;
+	input->textInput[0] = '\0';
 }
 
 void
@@ -44,6 +45,7 @@ input_reset(Input *input)
 	input->modKeyState = 0;
 	input->lastMouseX = input->mouseX;
 	input->lastMouseY = input->mouseY;
+	input->textInput[0] = '\0';
 }
 
 static Uint64
@@ -101,6 +103,9 @@ get_event_key(SDL_Event *event)
 		case SDLK_TAB:
 			key = KEY_TAB;
 			break;
+		case SDLK_BACKSPACE:
+			key = KEY_BACKSPACE;
+			break;
 		default:
 			key = 0;
 			break;
@@ -195,6 +200,9 @@ get_event_modkey(SDL_Event *event)
 			case SDLK_F:
 				key = KEY_CTRL_F;
 				break;
+			case SDLK_V:
+				key = KEY_CTRL_V;
+				break;
 		}
 	} else if (event->key.mod & (SDL_KMOD_LSHIFT | SDL_KMOD_RSHIFT)) {
 		switch (event->key.key) {
@@ -278,6 +286,10 @@ input_handle_event(Input *input, SDL_Event *event, InputDeviceType *device_type)
 		} else {
 			input->keyState &= ~get_axis_motion(event);
 		}
+	} else if (event->type == SDL_EVENT_TEXT_INPUT) {
+		// Copy the string and ensure null-termination
+		strncpy(input->textInput, event->text.text, TEXT_INPUT_MAX_LEN - 1);
+		input->textInput[TEXT_INPUT_MAX_LEN - 1] = '\0';
 	}
 
 	if (device_type != NULL) {

src/input.h

@@ -40,6 +40,7 @@
 #define KEY_ENTER 0x8000
 #define KEY_SPACE 0x10000
 #define KEY_TAB 0x20000
+#define KEY_BACKSPACE 0x40000
 
 #define KEY_CTRL_M 0x1
 #define KEY_CTRL_S 0x2
@@ -50,11 +51,14 @@
 #define KEY_SHIFT_NUM4 0x40
 #define KEY_SHIFT_NUM5 0x80
 #define KEY_CTRL_F 0x100
+#define KEY_CTRL_V 0x200
 
 #define MBUTTON_LEFT 0x1
 #define MBUTTON_MIDDLE 0x2
 #define MBUTTON_RIGHT 0x4
 
+#define TEXT_INPUT_MAX_LEN 16
+
 typedef enum InputDeviceType { DeviceType_Unknown, DeviceType_Keyboard, DeviceType_Gamepad } InputDeviceType;
 
 typedef struct Input {
@@ -68,6 +72,7 @@ typedef struct Input {
 	Uint32 lastMouseY;
 	Uint32 mouseX;
 	Uint32 mouseY;
+	char textInput[TEXT_INPUT_MAX_LEN];
 } Input;
 
 void input_init(Input *);

src/main.c

@@ -56,6 +56,7 @@
 #include "event.h"
 #include "config.h"
 #include "save.h"
+#include "text_input.h"
 
 #ifdef DEBUG
 #include "debug/debug.h"
@@ -104,6 +105,7 @@ static SDL_Rect statsGuiViewport;
 static SDL_Rect minimapViewport;
 static SDL_Rect menuViewport;
 static Input input;
+static unsigned int gCustomSeed = 0;
 
 #ifdef DEBUG
 static Sprite *fpsSprite = NULL;
@@ -260,10 +262,16 @@ startGame(void)
 	else
 		cLevel = 1;
 
-	if (weeklyGame)
+	if (weeklyGame) {
+		debug("Using weekly game seed");
 		set_random_seed((unsigned int)time_get_weekly_seed());
-	else
-		set_random_seed(0);
+	} else if (gCustomSeed) {
+		debug("Using custom game seed");
+		set_random_seed(gCustomSeed);
+	} else {
+		debug("Setting random seed");
+		set_random_seed(0); // 0 will trigger a random seed later on.
+	}
 
 	gGameState = PLAYING;
 	if (gPlayer)
@@ -471,6 +479,18 @@ goToGameSelectMenu(void *unused)
 	gGameState = GAME_SELECT;
 }
 
+static void
+openSeedEntry(void *unused)
+{
+	(void)unused;
+	char seed_str[16] = {0};
+	if (gCustomSeed > 0) {
+		SDL_snprintf(seed_str, sizeof(seed_str), "%u", gCustomSeed);
+	}
+	text_input_init(gWindow, gRenderer, "Enter game seed:", seed_str);
+	gGameState = SEED_ENTRY;
+}
+
 static void
 showHowToTooltip(void *unused)
 {
@@ -479,33 +499,66 @@ showHowToTooltip(void *unused)
 	gGui->activeTooltip = tooltip_manager_get_tooltip(TOOLTIP_TYPE_HOWTO);
 }
 
+static void
+copySeedToClipboard(void *unused)
+{
+	(void)unused;
+	char seed_str[16];
+	SDL_snprintf(seed_str, sizeof(seed_str), "%u", get_random_seed());
+	SDL_SetClipboardText(seed_str);
+	gui_event_message("Seed copied to clipboard");
+	toggleInGameMenu(NULL);
+}
+
+static void
+buildSeedLabel(char *buf, size_t size)
+{
+	SDL_snprintf(buf, size, "SEED:%u", get_random_seed());
+}
+
 static void
 initInGameMenu(void)
 {
-	static TEXT_MENU_ITEM menu_items[] = {
-	    {"RESUME", "", toggleInGameMenu},
-	    {"HOW TO PLAY", "", showHowToTooltip},
-	    {"MAIN MENU", "", goToMainMenu},
-	    {"QUIT", "Exit game", exitGame},
-	};
+	static char seed_label[32];
+	buildSeedLabel(seed_label, sizeof(seed_label));
+
+	TEXT_MENU_ITEM menu_items[5];
+	int count = 0;
 
-	menu_create_text_menu(&inGameMenu, &menu_items[0], 4, gRenderer);
+	menu_items[count++] = (TEXT_MENU_ITEM){"RESUME", "Resume the current game", toggleInGameMenu};
+	menu_items[count++] = (TEXT_MENU_ITEM){"HOW TO PLAY", "Show the in-game guide", showHowToTooltip};
+	if (!weeklyGame) {
+		menu_items[count++] = (TEXT_MENU_ITEM){seed_label, "Copy seed to clipboard", copySeedToClipboard};
+	}
+	menu_items[count++] = (TEXT_MENU_ITEM){"MAIN MENU", "Return to the main menu", goToMainMenu};
+	menu_items[count++] = (TEXT_MENU_ITEM){"QUIT", "Exit game", exitGame};
+
+	menu_create_text_menu(&inGameMenu, &menu_items[0], count, gRenderer);
 }
 
 static void
 createInGameGameOverMenu(void)
 {
-	static TEXT_MENU_ITEM menu_items[] = {
-	    {"NEW GAME", "Start a new game with the same settings", goToCharacterMenu},
-	    {"MAIN MENU", "", goToMainMenu},
-	    {"QUIT", "Exit game", exitGame},
-	};
+	static char seed_label[32];
+	buildSeedLabel(seed_label, sizeof(seed_label));
 
 	if (inGameMenu) {
 		menu_destroy(inGameMenu);
 		inGameMenu = NULL;
 	}
-	menu_create_text_menu(&inGameMenu, &menu_items[0], 3, gRenderer);
+
+	TEXT_MENU_ITEM menu_items[4];
+	int count = 0;
+
+	menu_items[count++] =
+	    (TEXT_MENU_ITEM){"NEW GAME", "Start a new game with the same settings", goToCharacterMenu};
+	if (!weeklyGame) {
+		menu_items[count++] = (TEXT_MENU_ITEM){seed_label, "Copy seed to clipboard", copySeedToClipboard};
+	}
+	menu_items[count++] = (TEXT_MENU_ITEM){"MAIN MENU", "Return to the main menu", goToMainMenu};
+	menu_items[count++] = (TEXT_MENU_ITEM){"QUIT", "Exit game", exitGame};
+
+	menu_create_text_menu(&inGameMenu, &menu_items[0], count, gRenderer);
 }
 
 static void
@@ -547,6 +600,7 @@ initMainMenu(void)
 {
 	static TEXT_MENU_ITEM menu_items[] = {
 	    {"PLAY", "Start game", goToGameSelectMenu},
+	    {"SET SEED", "Set the game seed", openSeedEntry},
 	    {"SCORES", "View your top 10 scores", viewScoreScreen},
 	    {"CREDITS", "View game credits", viewCredits},
 	    {"QUIT", "Exit game", exitGame},
@@ -557,7 +611,7 @@ initMainMenu(void)
 
 	gMap = map_lua_generator_single_room__run(cLevel, gRenderer);
 
-	menu_create_text_menu(&mainMenu, &menu_items[0], 4, gRenderer);
+	menu_create_text_menu(&mainMenu, &menu_items[0], SDL_arraysize(menu_items), gRenderer);
 	mixer_play_music(MENU_MUSIC);
 	creditsScreen = screen_create_credits(gRenderer);
 	scoreScreen = screen_create_hiscore(gRenderer);
@@ -752,6 +806,10 @@ handle_main_input(void)
 				charSelectMenu = NULL;
 				gGameState = GAME_SELECT;
 				break;
+			case SEED_ENTRY:
+				text_input_close(gWindow);
+				gGameState = MENU;
+				break;
 			case MENU:
 				gGameState = QUIT;
 				break;
@@ -769,7 +827,7 @@ handle_main_input(void)
 	}
 
 	handle_settings_input();
-	if (input_key_is_pressed(&input, KEY_TAB)) {
+	if ((gGameState == PLAYING || gGameState == GAME_OVER) && input_key_is_pressed(&input, KEY_TAB)) {
 		gShowMap = !gShowMap;
 	}
 }
@@ -1059,6 +1117,7 @@ run_game_render(void)
 static inline void
 register_scores(void)
 {
+	debug("Registering steam scores");
 	uint8_t details[4] = {(uint8_t)gPlayer->stats.lvl, (uint8_t)cLevel, (uint8_t)(gPlayer->class + 1), 0};
 	steam_register_score((int)gPlayer->gold, (int32_t *)&details, 1);
 	steam_register_kills((int)gPlayer->stat_data.kills, (int32_t *)&details, 1);
@@ -1080,6 +1139,10 @@ register_scores(void)
 		steam_set_achievement(MAGICAL);
 		steam_register_mage_score((int)gPlayer->gold, (int32_t *)&details, 1);
 	}
+
+	if (gCustomSeed != 0 && !weeklyGame) {
+		steam_set_achievement(SEEDLING);
+	}
 }
 #endif
 
@@ -1207,6 +1270,28 @@ run_menu(void)
 	SDL_RenderPresent(gRenderer);
 }
 
+static void
+run_seed_entry(void)
+{
+	SDL_SetRenderViewport(gRenderer, &mainViewport);
+	text_input_update(&input);
+	text_input_render(gCamera);
+	SDL_RenderPresent(gRenderer);
+
+	// Di this last since it resets the text_input
+	if (text_input_is_confirmed()) {
+		const char *val = text_input_get_value();
+		if (SDL_strlen(val) > 0) {
+			gCustomSeed = (unsigned int)SDL_atoi(val);
+			debug("Custom seed set: %u", gCustomSeed);
+		} else {
+			gCustomSeed = 0;
+		}
+		text_input_close(gWindow);
+		gGameState = MENU;
+	}
+}
+
 static void
 run(void)
 {
@@ -1252,6 +1337,9 @@ run(void)
 			case CHARACTER_MENU:
 				run_menu();
 				break;
+			case SEED_ENTRY:
+				run_seed_entry();
+				break;
 			case QUIT:
 				quit = true;
 				break;

src/steam/steamworks_api_wrapper.c

@@ -23,8 +23,9 @@ static Achievement g_Achievements[] = {_ACH_ID(BAD_DOG, "Bad Dog"),
                                        _ACH_ID(BACK_TO_WORK, "Back to work"),
                                        _ACH_ID(DRAGON_SLAYER, "Platinum dragon slayer"),
                                        _ACH_ID(ROGUE_LIKE, "Rogue-like"),
-                                       _ACH_ID(MAGICAL, "Magical")};
-static Uint8 numAchievements = 7;
+                                       _ACH_ID(MAGICAL, "Magical"),
+                                       _ACH_ID(SEEDLING, "Seedling")};
+static Uint8 numAchievements = SDL_arraysize(g_Achievements);
 
 static bool m_Initiated = false;
 static uint32_t m_AppID = 0;
@@ -140,6 +141,7 @@ steam_set_achievement(EAchievement eAch)
 		Achievement *a = &g_Achievements[i];
 		if (a->m_eAchievementID == eAch && !a->m_bAchieved) {
 			c_SteamUserStats_SetAchievement(g_Achievements[i].m_pchAchievementID);
+			debug("Setting \"%s\" achievement", a->m_rgchName);
 			gui_log("You just earned the \"%s\" achievement", a->m_rgchName);
 		}
 	}

src/steam/steamworks_api_wrapper.h

@@ -13,7 +13,8 @@ typedef enum EAchievement {
 	BUGGCREATOR = 8,
 	ROGUE_LIKE = 9,
 	MAGICAL = 10,
-	ARCADE_HACK = 11
+	ARCADE_HACK = 11,
+	SEEDLING = 12,
 } EAchievement;
 
 #define _ACH_ID(id, name) {id, #id, name, "", 0, 0}