Use the random generator instead of rand()

src/item_builder.c

@@ -6,6 +6,7 @@
 #include "util.h"
 #include "gui.h"
 #include "mixer.h"
+#include "random.h"
 
 static ItemBuilder *builder = NULL;
 
@@ -92,7 +93,7 @@ create_treasure(int current_level)
 	unsigned int highest_treasure;
 	unsigned int value;
 
-	amt = (unsigned int) (rand() + (5*current_level)) % 40;
+	amt = (unsigned int) get_random(5*current_level) % 40;
 
 	if (current_level > 9) {
 		highest_treasure = TREASURE_COUNT;
@@ -102,7 +103,7 @@ create_treasure(int current_level)
 		highest_treasure = GOLD;
 	}
 
-	value = rand() % highest_treasure;
+	value = get_random(highest_treasure);
 
 	SDL_Rect clip = { 0, 0, 16, 16 };
 	switch (value) {
@@ -157,13 +158,13 @@ item_builder_build_item(ItemKey key, int level)
 			item = create_item(path_flesh,
 					   (SDL_Rect) { 0, 0, 16, 16 },
 					   &eat_flesh);
-			item->value = 1;
+			item->value = get_random(level);
 			break;
 		case HEALTH:
 			item = create_item(path_potion,
 					   (SDL_Rect) { 0, 0, 16, 16 },
 					   &drink_health);
-			item->value = 1 + (rand() % 2);
+			item->value = 1 + get_random(level*2);
 			break;
 		default:
 			fatal("in item_builder_build() : Unhandled item key %d", key);

src/main.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <stdbool.h>
 #include <SDL2/SDL.h>
 #include <SDL2/SDL_image.h>
@@ -22,6 +23,7 @@
 #include "menu.h"
 #include "keyboard.h"
 #include "mixer.h"
+#include "random.h"
 
 static SDL_Window	*gWindow	= NULL;
 static SDL_Renderer	*gRenderer	= NULL;
@@ -167,7 +169,7 @@ startGame(void *unused)
 	if (gPlayer)
 		player_destroy(gPlayer);
 	gPlayer = player_create(WARRIOR, gRenderer);
-	mixer_play_music(GAME_MUSIC0 + (rand() % 3));
+	mixer_play_music(GAME_MUSIC0 + get_random(2));
 	resetGame();
 }
 
@@ -381,7 +383,7 @@ check_next_level(void)
 	}
 	if (tile->levelExit) {
 		mixer_play_effect(NEXT_LEVEL);
-		mixer_play_music(GAME_MUSIC0 + (rand() % 3));
+		mixer_play_music(GAME_MUSIC0 + get_random(2));
 		++cLevel;
 		resetGame();
 	}

src/monster.c

@@ -259,19 +259,19 @@ monster_update_stats_for_level(Monster *m, unsigned int level)
 void
 monster_drop_loot(Monster *monster, Map *map)
 {
-	static unsigned int item_drop_chance = 3;
-	static unsigned int treasure_drop_chance = 2;
+	static unsigned int item_drop_chance = 1;
+	static unsigned int treasure_drop_chance = 1;
 	Item *item;
 	Item *items[2];
 	unsigned int item_count = 0;
 
-	if ((rand() % treasure_drop_chance) == 0) {
+	if (get_random(treasure_drop_chance) == 0) {
 		item = item_builder_build_item(TREASURE, map->level);
 		item->sprite->pos = monster->sprite->pos;
 		items[item_count++] = item;
 	}
-	if ((rand() % item_drop_chance) == 0) {
-		item = item_builder_build_item(rand() % TREASURE, map->level);
+	if (get_random(item_drop_chance) == 0) {
+		item = item_builder_build_item(get_random(TREASURE - 1), map->level);
 		item->sprite->pos = monster->sprite->pos;
 		items[item_count++] = item;
 	}

src/particle_engine.c

@@ -4,6 +4,7 @@
 #include "util.h"
 #include "defines.h"
 #include "vector2d.h"
+#include "random.h"
 
 typedef struct Particle_t {
 	Position pos;
@@ -50,17 +51,17 @@ particle_engine_bloodspray(Position pos, Dimension dim, unsigned int count)
 		unsigned int mt, lt;
 		Particle *p;
 
-		x = (rand() % dim.width) + pos.x;
-		y = (rand() % dim.height) + pos.y;
+		x = get_random(dim.width) + pos.x;
+		y = get_random(dim.height) + pos.y;
 
-		xv = (rand() % 200) - 100;
-		yv = (rand() % 200) - 100;
+		xv = get_random(200) - 100;
+		yv = get_random(200) - 100;
 
-		mt = (rand() % 10) + 10;
-		lt = (rand() % 120) + 60;
+		mt = get_random(10) + 10;
+		lt = get_random(120) + 60;
 
-		w = (rand() % 3) + 2;
-		h = (rand() % 3) + 2;
+		w = get_random(3) + 2;
+		h = get_random(3) + 2;
 
 		p = ec_malloc(sizeof(Particle));
 		p->pos = (Position) { x, y };

src/player.c

@@ -10,6 +10,7 @@
 #include "particle_engine.h"
 #include "keyboard.h"
 #include "mixer.h"
+#include "random.h"
 
 #define ENGINEER_STATS	{ 12, 12, 5, 7, 2, 1, 1 }
 #define MAGE_STATS	{ 12, 12, 5, 7, 2, 1, 1 }
@@ -78,7 +79,7 @@ has_collided(Player *player, RoomMatrix *matrix)
 		unsigned int hit = stats_fight(&player->stats,
 					       &space->monster->stats);
 
-		mixer_play_effect(SWING0 + (rand() % 3));
+		mixer_play_effect(SWING0 + get_random(2));
 
 		monster_hit(space->monster, hit);
 
@@ -180,7 +181,7 @@ sip_health(Player *player)
 	if (player->potion_sips > 0) {
 		--player->potion_sips;
 		++player->stats.hp;
-		mixer_play_effect(BUBBLE0 + (rand() % 3));
+		mixer_play_effect(BUBBLE0 + get_random(2));
 		gui_log("You take a sip of health potion");
 	} else {
 		gui_log("You have nothing to sip");

src/stats.c

@@ -25,9 +25,9 @@ stats_fight(Stats *attacker, Stats *defender)
 	debug("Attacking: %d   Defending: %d", atkRoll, defRoll);
 
 	if (atkRoll > defRoll) {
-		dmgRoll = (rand() % attacker->dmg) + 1;
-		defender->hp -= dmgRoll;
+		dmgRoll = get_random(attacker->dmg - 1) + 1;
 		if (critical)
+			dmgRoll = dmgRoll * 2;
 		defender->hp -= dmgRoll;
 	}