Updated program 2, bot logic and triggers...

program/program_2.c

@@ -10,14 +10,16 @@ It is distributed in the hope that it will be useful or harmful, it really depen
 #include "../chapter/chapter_1.c"
 #include "../chapter/chapter_2.c"
 
-static int player_x = 0;
-static int player_y = 0;
-
-static int  entity_define (char * name, int character, int colour, int effect, int value, int logic, int menu);
+static int  entity_define (char * name, int character, int colour, int effect, int value, int logic, void (* trigger) (void));
 static void entity_create (int entity, int amount);
 static void entity_render (int entity);
 
-static void entity_clean_up (void);
+static void entity_clean_up     (void);
+static void entity_update_logic (void);
+
+static int player_x     = 0;
+static int player_y     = 0;
+static int player_coins = 0;
 
 static int      entity_count     = 0;
 static char * * entity_name      = NULL;
@@ -26,16 +28,20 @@ static int    * entity_colour    = 0;
 static int    * entity_effect    = 0;
 static int    * entity_value     = 0;
 static int    * entity_logic     = 0;
-static int    * entity_menu      = 0;
-static int      entity_usage     = 0;
-static int    * entity_index     = 0;
-static int    * entity_x         = 0;
-static int    * entity_y         = 0;
+
+static void (* * entity_trigger) (void) = NULL;
+
+static int   entity_usage     = 0;
+static int * entity_index     = 0;
+static int * entity_x         = 0;
+static int * entity_y         = 0;
 
 static void player_move_up    (void) { player_y -= 1; limit (& player_y, 0, curses_screen_height - 1); }
 static void player_move_down  (void) { player_y += 1; limit (& player_y, 0, curses_screen_height - 1); }
 static void player_move_left  (void) { player_x -= 1; limit (& player_x, 0, curses_screen_width  - 1); }
 static void player_move_right (void) { player_x += 1; limit (& player_x, 0, curses_screen_width  - 1); }
+static void player_take_coin  (void) { ++player_coins;                                                 }
+static void player_died       (void) { curses_active = 0;                                              }
 
 int main (void) {
 	terminal_show_cursor (FALSE);
@@ -47,11 +53,13 @@ int main (void) {
 	curses_bind (SIGNAL_A, player_move_left);
 	curses_bind (SIGNAL_D, player_move_right);
 
-	int goblin = entity_define ("Goblin", 'G', COLOUR_RED,    EFFECT_NORMAL, FALSE, FALSE, 0);
-	int coin   = entity_define ("Coin",   '+', COLOUR_YELLOW, EFFECT_BOLD,   FALSE, FALSE, 0);
+	int coin       = entity_define ("Coin",       '+', COLOUR_YELLOW, EFFECT_BOLD,   1, FALSE, player_take_coin);
+	int goblin     = entity_define ("Goblin",     'g', COLOUR_RED,    EFFECT_NORMAL, 3, TRUE,  player_died);
+	int hob_goblin = entity_define ("Hob Goblin", 'G', COLOUR_RED,    EFFECT_BOLD,   7, TRUE,  player_died);
 
-	entity_create (goblin, 3);
-	entity_create (coin,   3);
+	entity_create (coin,       11);
+	entity_create (goblin,      7);
+	entity_create (hob_goblin,  3);
 
 	while (curses_active) {
 		curses_render_background ('.', COLOUR_GREY, EFFECT_BOLD);
@@ -65,6 +73,10 @@ int main (void) {
 
 		curses_render_character ('@', COLOUR_CYAN, EFFECT_BOLD, player_x, player_y);
 
+		curses_render_number (player_coins, COLOUR_YELLOW, EFFECT_BOLD, 0, 0);
+
+		entity_update_logic ();
+
 		curses_synchronize ();
 	}
 
@@ -75,8 +87,8 @@ int main (void) {
 	return (EXIT_SUCCESS);
 }
 
-static int entity_define (char * name, int character, int colour, int effect, int value, int logic, int menu) {
-	int entity_index = entity_count;
+static int entity_define (char * name, int character, int colour, int effect, int value, int logic, void (* trigger) (void)) {
+	int entity = entity_count;
 
 	++entity_count;
 
@@ -86,18 +98,18 @@ static int entity_define (char * name, int character, int colour, int effect, in
 	entity_effect    = reallocate (entity_effect,    entity_count * (int) sizeof (* entity_effect));
 	entity_value     = reallocate (entity_value,     entity_count * (int) sizeof (* entity_value));
 	entity_logic     = reallocate (entity_logic,     entity_count * (int) sizeof (* entity_logic));
-	entity_menu      = reallocate (entity_menu,      entity_count * (int) sizeof (* entity_menu));
+	entity_trigger   = reallocate (entity_trigger,   entity_count * (int) sizeof (* entity_trigger));
 
-	string_copy ((entity_name [entity_index] = allocate (string_length (name) + 1)), name);
+	string_copy ((entity_name [entity] = allocate (string_length (name) + 1)), name);
 
-	entity_character [entity_index] = character;
-	entity_colour    [entity_index] = colour;
-	entity_effect    [entity_index] = effect;
-	entity_value     [entity_index] = value;
-	entity_logic     [entity_index] = logic;
-	entity_menu      [entity_index] = menu;
+	entity_character [entity] = character;
+	entity_colour    [entity] = colour;
+	entity_effect    [entity] = effect;
+	entity_value     [entity] = value;
+	entity_logic     [entity] = logic;
+	entity_trigger   [entity] = trigger;
 
-	return (entity_index);
+	return (entity);
 }
 
 static void entity_create (int entity, int amount) {
@@ -117,6 +129,10 @@ static void entity_create (int entity, int amount) {
 }
 
 static void entity_render (int entity) {
+	if (entity_index [entity] == -1) {
+		return;
+	}
+
 	curses_render_character (entity_character [entity_index [entity]],
 	                         entity_colour    [entity_index [entity]],
 	                         entity_effect    [entity_index [entity]],
@@ -135,7 +151,7 @@ void entity_clean_up (void) {
 	entity_effect    = deallocate (entity_effect);
 	entity_value     = deallocate (entity_value);
 	entity_logic     = deallocate (entity_logic);
-	entity_menu      = deallocate (entity_menu);
+	entity_trigger   = deallocate (entity_trigger);
 	entity_index     = deallocate (entity_index);
 	entity_x         = deallocate (entity_x);
 	entity_y         = deallocate (entity_y);
@@ -143,3 +159,27 @@ void entity_clean_up (void) {
 	entity_count = 0;
 	entity_usage = 0;
 }
+
+void entity_update_logic (void) {
+	for (int entity = 0; entity < entity_usage; ++entity) {
+		if (entity_index [entity] == -1) {
+			continue;
+		}
+
+		if (entity_logic [entity_index [entity]] == TRUE) {
+			entity_x [entity] += randomize (0, 1) * ((randomize (0, 1) == 0) ? +1 : -1);
+			entity_y [entity] += randomize (0, 1) * ((randomize (0, 1) == 0) ? +1 : -1);
+
+			limit (& entity_x [entity], 0, curses_screen_width  - 1);
+			limit (& entity_y [entity], 0, curses_screen_height - 1);
+		}
+
+		if ((player_x == entity_x [entity]) && (player_y == entity_y [entity])) {
+			if (entity_trigger [entity_index [entity]] != NULL) {
+				entity_trigger [entity_index [entity]] ();
+			}
+
+			entity_index [entity] = -1;
+		}
+	}
+}