Added an XP bar. Need some text to go with it next

src/gui.c

@@ -8,6 +8,7 @@
 #include "util.h"
 
 #define DEFAULT_LOG { NULL, 50, 0, 200 }
+#define POS_Y_XPBAR	96
 
 static SDL_Rect frame_top_left		= { 16, 160, 16, 16 };
 static SDL_Rect frame_top_right		= { 48, 160, 16, 16 };
@@ -26,6 +27,19 @@ static struct LogData_t {
 	unsigned int strlen;
 } log_data = DEFAULT_LOG;
 
+static Texture*
+add_texture(Gui *gui, const char *path, SDL_Renderer *renderer)
+{
+	Texture *t = ht_get(gui->textures, path);
+	if (t == NULL) {
+		t = texture_create();
+		texture_load_from_file(t, path, renderer);
+		t->dim = (Dimension) { 16, 16 };
+		ht_set(gui->textures, path, t);
+	}
+	return t;
+}
+
 static void
 gui_malloc_log(void)
 {
@@ -39,8 +53,56 @@ gui_malloc_log(void)
 		log_data.log[i] = NULL;
 }
 
+static void
+init_sprites(Gui *gui, SDL_Renderer *renderer)
+{
+	Texture *t;
+	Sprite *s;
+	unsigned int i;
+
+	t = add_texture(gui, "assets/GUI/GUI0.png", renderer);
+
+	/*
+	 * Add XP bar decoration
+	 */
+
+	// Left end
+	s = sprite_create();
+	sprite_set_texture(s, t, 0);
+	s->fixed = true;
+	s->clip = (SDL_Rect) { 6 * 16, 0, 16, 16 };
+	s->pos = (Position) { 16 , POS_Y_XPBAR };
+	linkedlist_append(&gui->sprites, s);
+
+	// Right end
+	s = sprite_create();
+	sprite_set_texture(s, t, 0);
+	s->fixed = true;
+	s->clip = (SDL_Rect) { 8 * 16, 0, 16, 16 };
+	s->pos = (Position) { 16 + (16 * 7), POS_Y_XPBAR };
+	linkedlist_append(&gui->sprites, s);
+
+	for (i = 1; i < 7; ++i) {
+		s = sprite_create();
+		sprite_set_texture(s, t, 0);
+		s->fixed = true;
+		s->clip = (SDL_Rect) { 7 * 16, 0, 16, 16 };
+		s->pos = (Position) { 16 + (i * 16), POS_Y_XPBAR };
+		linkedlist_append(&gui->sprites, s);
+	}
+
+	for (i = 0; i < 8; ++i) {
+		s = sprite_create();
+		sprite_set_texture(s, t, 0);
+		s->fixed = true;
+		s->clip = (SDL_Rect) { 6 * 16, 4 * 16, 16, 16 };
+		s->pos = (Position) { 16 + (i * 16), POS_Y_XPBAR };
+		linkedlist_append(&gui->xp_bar, s);
+	}
+}
+
 Gui*
-gui_create()
+gui_create(SDL_Renderer *renderer)
 {
 	Texture *t;
 	unsigned int i;
@@ -48,6 +110,7 @@ gui_create()
 	Gui *gui = ec_malloc(sizeof(Gui));
 	gui->sprites = linkedlist_create();
 	gui->health = linkedlist_create();
+	gui->xp_bar = linkedlist_create();
 	gui->textures = ht_create(5);
 
 	for (i = 0; i < LOG_LINES_COUNT; ++i) {
@@ -58,6 +121,8 @@ gui_create()
 
 	gui_malloc_log();
 
+	init_sprites(gui, renderer);
+
 	return gui;
 }
 
@@ -76,7 +141,7 @@ gui_set_max_health(Gui *gui, int max, SDL_Renderer *renderer)
 	while (gui->health != NULL)
 		sprite_destroy(linkedlist_pop(&gui->health));
 
-	texture = gui_add_texture(gui, "assets/GUI/GUI0.png", renderer);
+	texture = add_texture(gui, "assets/GUI/GUI0.png", renderer);
 
 	for (i = 0; i < max/3; ++i) {
 		Sprite *sprite = sprite_create();
@@ -114,17 +179,48 @@ gui_set_current_health(Gui *gui, int current)
 	}
 }
 
-Texture*
-gui_add_texture(Gui *gui, const char *path, SDL_Renderer *renderer)
+void
+gui_set_current_xp(Gui *gui, ExperienceData data)
 {
-	Texture *t = ht_get(gui->textures, path);
-	if (t == NULL) {
-		t = texture_create();
-		texture_load_from_file(t, path, renderer);
-		t->dim = (Dimension) { 16, 16 };
-		ht_set(gui->textures, path, t);
+	static unsigned int last_level = 0;
+	unsigned int xp_from_levelup, xp_required_from_last_level;
+	float xp_step, xp_current_step;
+	unsigned int full_xp_blocks, partial_xp_block;
+	LinkedList *xp_bars;
+	unsigned int i;
+
+	xp_from_levelup = data.current - data.previousLevel;
+	xp_required_from_last_level = data.nextLevel - data.previousLevel;
+	xp_step = ((float) xp_required_from_last_level) / 32; // 4 * 8
+	xp_current_step = xp_from_levelup / xp_step;
+
+	partial_xp_block = ((unsigned int) xp_current_step) % 4;
+	full_xp_blocks = (unsigned int)((xp_current_step - partial_xp_block) / 4);
+
+	xp_bars = gui->xp_bar;
+	i = 0;
+	while (xp_bars != NULL) {
+		Sprite *s = xp_bars->data;
+		s->hidden = false;
+		xp_bars = xp_bars->next;
+
+		if (i < full_xp_blocks) {
+			s->clip.x = 6 * 16;
+		} else if (i == full_xp_blocks && partial_xp_block != 0) {
+			s->clip.x = (6 * 16) + (16 * (4 - partial_xp_block));
+		} else {
+			s->hidden = true;
+		}
+
+		++i;
 	}
-	return t;
+
+	if (last_level != data.level) {
+		// TODO(Linus): Update the indicators
+		last_level = data.level;
+	}
+
+
 }
 
 static void
@@ -173,6 +269,12 @@ gui_render_panel(Gui *gui, unsigned int width, unsigned int height, Camera *cam)
 		sprite_render(s, cam);
 		item = item->next;
 	}
+	item = gui->xp_bar;
+	while (item != NULL) {
+		Sprite *s = item->data;
+		sprite_render(s, cam);
+		item = item->next;
+	}
 	item = gui->sprites;
 	while (item != NULL) {
 		Sprite *s = item->data;
@@ -262,6 +364,8 @@ gui_destroy(Gui *gui)
 		sprite_destroy(linkedlist_pop(&gui->sprites));
 	while (gui->health != NULL)
 		sprite_destroy(linkedlist_pop(&gui->health));
+	while (gui->xp_bar != NULL)
+		sprite_destroy(linkedlist_pop(&gui->xp_bar));
 
 	ht_destroy_custom(gui->textures, (void (*)(void*)) &texture_destroy);
 	free(gui);

src/gui.h

@@ -8,28 +8,41 @@
 #include "hashtable.h"
 #include "sprite.h"
 #include "camera.h"
+#include "player.h"
 
 typedef struct {
 	LinkedList *sprites;
 	LinkedList *health;
+	LinkedList *xp_bar;
 	Hashtable *textures;
 	Texture *log_lines[LOG_LINES_COUNT];
 } Gui;
 
-Gui* gui_create(void);
+Gui*
+gui_create(SDL_Renderer *renderer);
 
-void gui_set_max_health(Gui*, int max, SDL_Renderer*);
+void
+gui_set_max_health(Gui*, int max, SDL_Renderer*);
 
-void gui_set_current_health(Gui*, int current);
+void
+gui_set_current_health(Gui*, int current);
 
-Texture* gui_add_texture(Gui*, const char *path, SDL_Renderer*);
+void
+gui_set_current_xp(Gui*, ExperienceData);
 
-void gui_render_panel(Gui*, unsigned int width, unsigned int height, Camera*);
+void
+gui_set_xp_data(Gui*, ExperienceData);
 
-void gui_render_log(Gui*, unsigned int width, unsigned int height, Camera*);
+void
+gui_render_panel(Gui*, unsigned int width, unsigned int height, Camera*);
 
-void gui_log(const char *fmt, ...);
+void
+gui_render_log(Gui*, unsigned int width, unsigned int height, Camera*);
 
-void gui_destroy(Gui*);
+void
+gui_log(const char *fmt, ...);
+
+void
+gui_destroy(Gui*);
 
 #endif // GUI_H_

src/main.c

@@ -115,9 +115,7 @@ initViewports(void)
 static
 bool initGame(void)
 {
-	initViewports();
 	gMap = map_lua_generator_run(cLevel, gRenderer);
-	gPointer = pointer_create(gRenderer);
 
 	return true;
 }
@@ -129,11 +127,13 @@ bool init(void)
 	result = result && initSDL();
 	result = result && initGame();
 	if (result) {
+		initViewports();
 		gCamera.pos = (Position) { 0, 0 };
 		gCamera.renderer = gRenderer;
 		gRoomMatrix = roommatrix_create();
-		gGui = gui_create();
+		gGui = gui_create(gRenderer);
 		item_builder_init(gRenderer);
+		gPointer = pointer_create(gRenderer);
 	}
 
 	gGameState = PLAYING;
@@ -201,17 +201,31 @@ check_next_level(void)
 static void
 run_game(void)
 {
+	static unsigned int player_max_hp = 0;
+	static unsigned int player_current_hp = 0;
+	static unsigned int player_current_xp = 0;
+
 	SDL_RenderSetViewport(gRenderer, NULL);
 	map_clear_dead_monsters(gMap);
 	map_clear_collected_items(gMap);
 	roommatrix_populate_from_map(gRoomMatrix, gMap);
 	roommatrix_add_lightsource(gRoomMatrix,
-				   &gPlayer->sprite->pos);
+		&gPlayer->sprite->pos);
 
 	roommatrix_build_lightmap(gRoomMatrix);
 
-	gui_set_max_health(gGui, gPlayer->stats.maxhp, gRenderer);
-	gui_set_current_health(gGui, gPlayer->stats.hp);
+	if (player_max_hp != gPlayer->stats.maxhp) {
+		gui_set_max_health(gGui, gPlayer->stats.maxhp, gRenderer);
+		player_max_hp = gPlayer->stats.maxhp;
+	}
+	if (player_current_hp != gPlayer->stats.hp) {
+		gui_set_current_health(gGui, gPlayer->stats.hp);
+		player_current_hp = gPlayer->stats.hp;
+	}
+	if (player_current_xp != gPlayer->xp) {
+		gui_set_current_xp(gGui, player_get_xp_data(gPlayer));
+		player_current_xp = gPlayer->xp;
+	}
 	if (gPlayer->steps == gPlayer->stats.speed) {
 		player_reset_steps(gPlayer);
 		roommatrix_update_with_player(gRoomMatrix, gPlayer);

src/player.c

@@ -22,6 +22,10 @@ player_levelup(Player *player)
 	player->stats.dmg += 5;
 	player->stats.atk += 1;
 	player->stats.def += 1;
+
+	// Limit health to 3 rows of hearts
+	if (player->stats.maxhp > 72)
+		player->stats.maxhp = 72;
 }
 
 unsigned int
@@ -115,8 +119,8 @@ move_left(Player *player, RoomMatrix *matrix)
 	player_step(player);
 }
 
-static
-void move_right(Player *player, RoomMatrix *matrix)
+static void
+move_right(Player *player, RoomMatrix *matrix)
 {
 	player->sprite->clip.y = 32;
 	player->sprite->pos.x += TILE_DIMENSION;
@@ -126,8 +130,8 @@ void move_right(Player *player, RoomMatrix *matrix)
 	player_step(player);
 }
 
-static
-void move_up(Player *player, RoomMatrix *matrix)
+static void
+move_up(Player *player, RoomMatrix *matrix)
 {
 	player->sprite->clip.y = 48;
 	player->sprite->pos.y -= TILE_DIMENSION;
@@ -137,8 +141,8 @@ void move_up(Player *player, RoomMatrix *matrix)
 	player_step(player);
 }
 
-static
-void move_down(Player *player, RoomMatrix *matrix)
+static void
+move_down(Player *player, RoomMatrix *matrix)
 {
 	player->sprite->clip.y = 0;
 	player->sprite->pos.y += TILE_DIMENSION;
@@ -148,8 +152,8 @@ void move_down(Player *player, RoomMatrix *matrix)
 	player_step(player);
 }
 
-static
-void handle_player_input(Player *player, RoomMatrix *matrix, SDL_Event *event)
+static void
+handle_player_input(Player *player, RoomMatrix *matrix, SDL_Event *event)
 {
 	static unsigned int step = 1;
 
@@ -251,6 +255,16 @@ player_create(class_t class, SDL_Renderer *renderer)
 	return player;
 }
 
+ExperienceData player_get_xp_data(Player *p)
+{
+	ExperienceData data;
+	data.previousLevel = next_level_threshold(p->stats.lvl - 1);
+	data.current = p->xp;
+	data.nextLevel = next_level_threshold(p->stats.lvl);
+	data.level = p->stats.lvl;
+	return data;
+}
+
 void
 player_hit(Player *p, unsigned int dmg)
 {

src/player.h

@@ -10,6 +10,14 @@
 enum PlayerClass { ENGINEER, MAGE, PALADIN, ROGUE, WARRIOR };
 typedef enum PlayerClass class_t;
 
+
+typedef struct ExperienceData_t {
+	unsigned int previousLevel;
+	unsigned int current;
+	unsigned int nextLevel;
+	unsigned int level;
+} ExperienceData;
+
 typedef struct Player_t {
 	Sprite *sprite;
 	ActionText *hitText;
@@ -28,6 +36,9 @@ typedef struct Player_t {
 Player*
 player_create(class_t, SDL_Renderer*);
 
+ExperienceData
+player_get_xp_data(Player*);
+
 void
 player_hit(Player*, unsigned int dmg);
 

src/sprite.c

@@ -14,6 +14,7 @@ Sprite* sprite_create_default(void)
 	s->renderTimer = timer_create();
 	s->texture_index = 0;
 	s->fixed = false;
+	s->hidden = false;
 
 	return s;
 }
@@ -55,6 +56,9 @@ sprite_set_texture(Sprite *s, Texture *t, int index)
 
 void sprite_render(Sprite *s, Camera *cam)
 {
+	if (s->hidden)
+		return;
+
 	if (s->textures[1]) {
 		if (!timer_started(s->renderTimer))
 			timer_start(s->renderTimer);

src/sprite.h

@@ -17,6 +17,7 @@ typedef struct Sprite_t {
 	Timer *renderTimer;
 	unsigned int texture_index;
 	bool fixed;
+	bool hidden;
 } Sprite;
 
 Sprite* sprite_create(void);