randomness

CMakeLists.txt

@@ -5,8 +5,8 @@ find_package(SFML 2.5 COMPONENTS graphics system window REQUIRED)
 
 set(CMAKE_CXX_CLANG_TIDY
 	clang-tidy
-	-header-filter=.*
-	-checks=-*,-checks=bugprone-*,cert-*,performance-*,clang-analyzer-*,-cert-dcl16-c,-cert-err58-cpp,-clang-analyzer-optin.cplusplus.VirtualCall)
+	--header-filter=.*
+	--checks=-*,bugprone-*,cert-*,performance-*,clang-analyzer-*,-cert-dcl16-c,-cert-err58-cpp,-clang-analyzer-optin.cplusplus.VirtualCall)
 
 add_compile_options(-std=c++2a -Wall -Wextra -Wpedantic -Wno-unused-parameter)
 if(CMAKE_BUILD_TYPE STREQUAL Debug OR CMAKE_BUILD_TYPE STREQUAL "")

core.mod/src/entities/EntItemStack.cc

@@ -1,9 +1,15 @@
 #include "EntItemStack.h"
 
+#include <random>
+
 EntItemStack::EntItemStack(const Swan::Context &ctx, const Swan::SRF &params):
 		PhysicsEntity(SIZE, MASS) {
 
 	readSRF(ctx, params);
+
+	static std::uniform_real_distribution dis(-0.2f, 0.2f);
+
+	body_.pos_ += Swan::Vec2{ dis(ctx.world.random_), dis(ctx.world.random_) };
 }
 
 void EntItemStack::draw(const Swan::Context &ctx, Swan::Win &win) {

libswan/include/swan/Win.h

@@ -6,9 +6,6 @@ namespace Swan {
 
 class Win {
 public:
-	float scale_ = 2;
-	Vec2 cam_;
-
 	Win(sf::RenderWindow *win): window_(win) {}
 
 	void setPos(const Vec2 &pos) {
@@ -26,6 +23,9 @@ public:
 		return Vec2(v.x, v.y) / (TILE_SIZE * scale_);
 	}
 
+	float scale_ = 2;
+	Vec2 cam_;
+
 private:
 	sf::RenderWindow *window_;
 	sf::Transform transform_;

libswan/include/swan/World.h

@@ -3,6 +3,7 @@
 #include <memory>
 #include <vector>
 #include <string>
+#include <random>
 
 #include "common.h"
 #include "Asset.h"
@@ -18,7 +19,7 @@ class Game;
 
 class World {
 public:
-	World(Game *game): game_(game) {}
+	World(Game *game, unsigned long rand_seed): game_(game), random_(rand_seed) {}
 
 	WorldPlane &addPlane(const std::string &gen);
 	WorldPlane &addPlane() { return addPlane(default_world_gen_); }
@@ -50,6 +51,8 @@ public:
 	Entity *player_;
 	Game *game_;
 
+	std::mt19937 random_;
+
 private:
 	class ChunkRenderer {
 	public:

libswan/src/Game.cc

@@ -3,6 +3,7 @@
 #include <dlfcn.h>
 #include <math.h>
 #include <SFML/Window/Mouse.hpp>
+#include <time.h>
 
 #include "Tile.h"
 #include "Asset.h"
@@ -30,7 +31,7 @@ void Game::loadMod(const std::string &path) {
 }
 
 void Game::createWorld(const std::string &worldgen) {
-	world_.reset(new World(this));
+	world_.reset(new World(this, time(NULL)));
 	for (auto &mod: registered_mods_) {
 		world_->registerTile(std::shared_ptr<Tile>(Tile::createInvalid()));