visible entity, cmake stuff

CMakeLists.txt

 	message(FATAL_ERROR "CMAKE_BUILD_TYPE must be Debug or Release.")
 endif()
 
+set(LIBRARIES sfml-graphics sfml-system sfml-window sfml-audio dl)
+
 # We want to be able to use C++20 designated initializers,
 # but Clang doesn't support them yet.
 # Remove once Clang 9.1 or something comes out.
 add_subdirectory(core.mod)
 
 add_executable(swan src/main.cc)
-target_link_libraries(swan libswan)
+target_link_libraries(swan libswan ${LIBRARIES})
 
 set(assets
 	assets/icon.png

core.mod/CMakeLists.txt

 	src/entities/EntPlayer.cc
 	src/entities/EntItemStack.cc)
 set_target_properties(core.mod PROPERTIES OUTPUT_NAME mod PREFIX "")
-target_link_libraries(core.mod libswan)
+target_link_libraries(core.mod libswan ${LIBRARIES})
 
 set(assets
 	assets/entities/player-still.png

core.mod/src/entities/EntItemStack.cc

 	readSRF(ctx, params);
 }
 
+void EntItemStack::draw(const Swan::Context &ctx, Swan::Win &win) {
+	body_.outline(win);
+}
+
+void EntItemStack::update(const Swan::Context &ctx, float dt) {
+	body_.gravity();
+	body_.update(dt);
+	body_.collide(ctx.plane);
+}
+
 void EntItemStack::readSRF(const Swan::Context &ctx, const Swan::SRF &srf) {
 	auto &arr = dynamic_cast<const Swan::SRFArray &>(srf);
 	auto *pos = dynamic_cast<Swan::SRFFloatArray *>(arr.val[0].get());
 	auto *name = dynamic_cast<Swan::SRFString *>(arr.val[1].get());
 
 	body_.pos_.set(pos->val[0], pos->val[1]);
-	item_ = &ctx.world.getItem(name->val); 
+	item_ = &ctx.world.getItem(name->val);
 }
 
 Swan::SRF *EntItemStack::writeSRF(const Swan::Context &ctx) {

core.mod/src/entities/EntItemStack.h

 
 	EntItemStack(const Swan::Context &ctx, const Swan::SRF &params);
 
+	void draw(const Swan::Context &ctx, Swan::Win &win) override;
+	void update(const Swan::Context &ctx, float dt) override;
 	void readSRF(const Swan::Context &ctx, const Swan::SRF &srf) override;
 	Swan::SRF *writeSRF(const Swan::Context &ctx) override;
 

libswan/CMakeLists.txt

 	src/WorldPlane.cc)
 target_include_directories(libswan PUBLIC "include/swan")
 set_target_properties(libswan PROPERTIES OUTPUT_NAME swan)
-target_link_libraries(libswan sfml-graphics sfml-system sfml-window sfml-audio dl)
+target_link_libraries(libswan ${LIBRARIES})
 
 install(TARGETS libswan DESTINATION swan/libswan)

libswan/include/swan/common.h

 	}
 
 	Vec2 getSize() {
-		sf::Vector2 v = window_->getSize();
+		sf::Vector2u v = window_->getSize();
 		return Vec2(v.x, v.y) / (TILE_SIZE * scale_);
 	}
 };

libswan/src/WorldPlane.cc

 
 	if (t.dropped_item != "") {
 		spawnEntity("core::item-stack", SRFArray{
-			new SRFFloatArray{ pos.x_ + 0.5f, pos.y_ + 0.5f },
+			new SRFFloatArray{ (float)pos.x_, (float)pos.y_ },
 			new SRFString{ t.dropped_item },
 		});
 	}