yay

.gitignore

@@ -0,0 +1 @@
+/build

Makefile

@@ -0,0 +1,116 @@
+# Makefile generated by smake.
+
+PROJNAME = cpplat
+PROJTYPE = exe
+
+SRCS = src/Body.cc src/main.cc src/Player.cc
+HDRS = src/Body.h src/common.h src/Player.h
+OBJS = $(patsubst src/%,$(BUILD)/obj/%.o,$(SRCS))
+DEPS = $(patsubst src/%,$(BUILD)/dep/%.d,$(SRCS))
+PUBLICHDRS =
+
+# Defaults
+PKGS =
+EXTRADEPS =
+EXTRAPUBLICDEPS =
+CONFIG ?= release
+BUILDDIR ?= build
+BUILD ?= $(BUILDDIR)/$(CONFIG)
+WARNINGS = -Wall -Wextra -Wno-unused-parameter
+SMAKEFILE ?= Smakefile
+DESTDIR ?=
+PREFIX ?= /usr/local
+PHONIES = dumpdeps dumppublicdeps dumpprojtype clean cleanall
+CONFIGS = release sanitize debug
+
+PKG_CONFIG ?= pkg-config
+AR ?= ar
+
+CCOPTS = -Iinclude
+CCOPTS_release = -O2 -flto
+CCOPTS_debug = -g
+CCOPTS_sanitize = -fsanitize=address -fsanitize=undefined $(CCOPTS_debug)
+
+LDOPTS =
+LDOPTS_release = -flto
+LDOPTS_debug =
+LDOPTS_sanitize = -fsanitize=address -fsanitize=undefined $(LDOPTS_debug)
+
+runpfx = @echo $(1) $(2) && $(2)
+
+.PHONY: all
+all: $(BUILD)/$(PROJNAME)
+
+-include $(SMAKEFILE)
+
+ifeq ($(filter $(CONFIGS),$(CONFIG)),)
+ifeq ($(filter cleanall,$(MAKECMDGOALS)),)
+$(error Unknown config '$(CONFIG)'. Supported configs: $(CONFIGS))
+endif
+endif
+
+ifneq ($(PKGS),)
+CCOPTS += $(shell $(PKG_CONFIG) --cflags $(PKGS))
+LDOPTS += $(shell $(PKG_CONFIG) --libs $(PKGS))
+endif
+
+CFLAGS := $(CCOPTS_$(CONFIG)) $(CCOPTS) $(WARNINGS) $(CFLAGS)
+CXXFLAGS := $(CCOPTS_$(CONFIG)) $(CCOPTS) $(WARNINGS) $(CXXFLAGS)
+LDFLAGS := $(LDOPTS_$(CONFIG)) $(LDOPTS) $(LDFLAGS)
+
+$(BUILD)/$(PROJNAME):  $(OBJS)
+	@mkdir -p $(@D)
+	$(call runpfx,'(LD)',$(CC) -o $@ $(OBJS) $(LDFLAGS))
+	touch $(BUILD)/.built
+	@echo '(OK)' Created $@.
+$(PROJNAME): $(BUILD)/$(PROJNAME)
+	cp $< $@
+	@echo '(OK)' Created $@.
+
+$(BUILD)/obj/%.c.o: src/%.c $(EXTRAPUBLICDEPS)
+	@mkdir -p $(@D)
+	$(call runpfx,'(CC)',$(CC) -o $@ -c $< $(CFLAGS))
+$(BUILD)/obj/%.cc.o: src/%.cc $(EXTRAPUBLICDEPS)
+	@mkdir -p $(@D)
+	$(call runpfx,'(CXX)',$(CXX) -o $@ -c $< $(CXXFLAGS))
+
+$(BUILD)/dep/%.c.d: src/%.c $(HDRS)
+	@mkdir -p $(@D)
+	$(call runpfx,'(DEP)',$(CC) -o $@ -MM $< -MT $(patsubst src/%,$(BUILD)/obj/%.o,$<) $(CFLAGS))
+$(BUILD)/dep/%.cc.d: src/%.cc $(HDRS)
+	@mkdir -p $(@D)
+	$(call runpfx,'(DEP)',$(CXX) -o $@ -MM $< -MT $(patsubst src/%,$(BUILD)/obj/%.o,$<) $(CXXFLAGS))
+
+.PHONY: install
+install: $(BUILD)/$(PROJNAME)
+	mkdir -p $(DESTDIR)$(PREFIX)/bin
+	cp -f $^ $(DESTDIR)$(PREFIX)/bin
+	chmod 755 $(DESTDIR)$(PREFIX)/bin/$(PROJNAME)
+
+.PHONY: uninstall
+uninstall:
+	rm -f $(DESTDIR)$(PREFIX)/bin/$(PROJNAME)
+
+.PHONY: clean
+clean:
+	rm -rf $(PROJNAME) $(BUILD)
+
+.PHONY: cleanall
+cleanall:
+	rm -rf $(BUILDDIR)
+
+.PHONY: dumpdeps
+dumpdeps:
+	@echo $(addprefix $(PREPEND),$(SRCS) $(HDRS) $(EXTRADEPS))
+
+.PHONY: dumppublicdeps
+dumppublicdeps:
+	@echo $(addprefix $(PREPEND),$(PUBLICHDRS) $(EXTRAPUBLICDEPS))
+
+.PHONY: dumpprojtype
+dumpprojtype:
+	@echo $(PROJTYPE)
+
+ifeq ($(filter $(PHONIES),$(MAKECMDGOALS)),)
+-include $(DEPS)
+endif

Smakefile

@@ -0,0 +1,2 @@
+PKGS = sfml-all
+LDFLAGS += -lstdc++

src/Body.cc

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+#include "Body.h"
+
+void Body::outline(Win &win) {
+	win.setPos(pos_);
+
+	sf::RectangleShape rect(size_);
+	rect.setFillColor(sf::Color::Transparent);
+	rect.setOutlineColor(sf::Color(128, 128, 128));
+	rect.setOutlineThickness(2 / UNIT_SIZE);
+	win.draw(rect);
+}
+
+void Body::update(float dt) {
+	vel_ += force_ * dt;
+	pos_ += vel_ * dt;
+	force_ = { 0, 0 };
+}

src/Body.h

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+#pragma once
+
+#include <SFML/Graphics.hpp>
+
+#include "common.h"
+
+class Body {
+public:
+	Vec2 force_ = { 0, 0 };
+	Vec2 vel_ = { 0, 0 };
+	Vec2 pos_;
+	Vec2 size_;
+
+	Body(Vec2 pos, Vec2 size):
+		pos_(pos), size_(size) {};
+
+	void outline(Win &win);
+	void update(float dt);
+};

src/Player.cc

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+#include "Player.h"
+
+void Player::draw(Win &win) {
+	body_.outline(win);
+}
+
+void Player::update(float dt) {
+	body_.vel_.x = 1;
+	body_.update(dt);
+
+	if (body_.pos_.x > 20)
+		body_.pos_.x = 0;
+}

src/Player.h

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+#pragma once
+
+#include <SFML/Graphics.hpp>
+
+#include "common.h"
+#include "Body.h"
+
+class Player {
+public:
+	Player(Vec2 pos):
+		body_(pos, Vec2(1, 1)) {}
+
+	void draw(Win &win);
+	void update(float dt);
+
+private:
+	Body body_;
+};

src/common.h

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+#pragma once
+
+#include <SFML/System/Vector2.hpp>
+#include <SFML/Graphics.hpp>
+
+#define UNIT_SIZE 32.0
+
+class Vec2: public sf::Vector2<float> {
+public:
+	using sf::Vector2<float>::Vector2;
+
+	Vec2 operator+(Vec2 &vec) {
+		return Vec2(x + vec.x, y + vec.y);
+	}
+	Vec2 &operator+=(Vec2 &vec) {
+		this->x += vec.x;
+		this->y += vec.y;
+		return *this;
+	}
+
+	Vec2 operator-(Vec2 &vec) {
+		return Vec2(x - vec.x, y - vec.y);
+	}
+	Vec2 &operator-=(Vec2 &vec) {
+		this->x -= vec.x;
+		this->y -= vec.y;
+		return *this;
+	}
+
+	Vec2 operator*(Vec2 &vec) {
+		return Vec2(x * vec.x, y * vec.y);
+	}
+	Vec2 &operator*=(Vec2 &vec) {
+		this->x *= vec.x;
+		this->y *= vec.y;
+		return *this;
+	}
+
+	Vec2 operator/(Vec2 &vec) {
+		return Vec2(x / vec.x, y / vec.y);
+	}
+	Vec2 &operator/=(Vec2 &vec) {
+		this->x /= vec.x;
+		this->y /= vec.y;
+		return *this;
+	}
+};
+
+struct Win {
+public:
+	sf::RenderWindow &window_;
+	sf::Transform &transform_;
+	Vec2 curr_pos_ = { 0, 0 };
+
+	void setPos(Vec2 &pos) {
+		transform_.translate(-curr_pos_.x, -curr_pos_.y);
+		transform_.translate(pos.x, pos.y);
+		curr_pos_ = pos;
+	}
+
+	void draw(const sf::Drawable &drawable) {
+		window_.draw(drawable, transform_);
+	}
+};

src/main.cc

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+#include <vector>
+#include <time.h>
+
+#include "common.h"
+#include "Player.h"
+
+double getTime() {
+	struct timespec ts;
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	return (double)ts.tv_sec + (double)ts.tv_nsec / 1000000000.0;
+}
+
+template<typename T>
+void draw_ents(std::vector<T> ents) {
+	for (auto &ent: ents)
+		ent.draw();
+}
+
+int main() {
+	sf::RenderWindow window(sf::VideoMode(800, 600), "SFML works!");
+	sf::Transform transform;
+	transform.scale(UNIT_SIZE, UNIT_SIZE);
+
+	Win win = { window, transform };
+
+	Player player(Vec2(1, 1));
+
+	double prevtime = getTime();
+	double acc = 0;
+	int fcount = 0;
+
+	while (window.isOpen()) {
+		sf::Event event;
+		while (window.pollEvent(event)) {
+			if (event.type == sf::Event::Closed)
+				window.close();
+		}
+
+		double now = getTime();
+		double dt = now - prevtime;
+		prevtime = now;
+		acc += dt;
+		fcount += 1;
+		if (acc >= 1) {
+			fprintf(stderr, "fps %i\n", fcount);
+			acc = 0;
+			fcount = 0;
+		}
+
+		window.clear(sf::Color(135, 206, 250));
+
+		player.draw(win);
+		player.update(dt);
+
+		window.display();
+	}
+
+	return 0;
+}