Build updates (vcpkg, warnings, setsmooth)

Add vcpkg toolchains if present
Add cmake build types (debug or release)
Require sfml >= 2 in cmake (match readme)
Add a config check for sf::font.setSmooth() only added in sfml 2.6
Install font as a build step once we know where the exe is
Use std::pow instead of std::powf
Compiles on windows

Signed-off-by: Aiden Woodruff <aiden.woodruff@gmail.com>

4 files changed, 51 insertions, 6 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b2facc6..778a4e9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,10 +1,38 @@
 cmake_minimum_required(VERSION 3.8)
 
+include("cmake/vcpkg.cmake")
+
+set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose the type of build.")
+message("Build type: ${CMAKE_BUILD_TYPE}")
+set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release")
+set(CMAKE_CONFIGURATION_TYPES "Debug;Release")
+
 project(noise VERSION 0.0 LANGUAGES CXX)
 
-find_package(SFML COMPONENTS graphics REQUIRED)
+if (CMAKE_BUILD_TYPE STREQUAL "Debug" OR $<CONFIG:Debug>)
+        # Enable extra compiler warnings in debug builds.
+        if (MSVC)
+                add_compile_options("/W4" "/WX")
+        else()
+                add_compile_options("-Wall" "-Wextra" "-pedantic")
+        endif()
+endif()
+
+find_package(SFML 2 COMPONENTS graphics REQUIRED)
+
+if("${SFML_VERSION}" VERSION_GREATER_EQUAL 2.6)
+set(HAVE_FONT_SMOOTHING TRUE)
+endif()
+
+configure_file(config.h.in config.h @ONLY)
+include_directories("${CMAKE_CURRENT_BINARY_DIR}")
 
 add_executable(noise noise.cc brush.cc)
 target_link_libraries(noise sfml-graphics)
 target_compile_features(noise PRIVATE cxx_std_17)
-configure_file(OpenSans-Regular.ttf OpenSans.ttf COPYONLY)
+
+add_custom_command(TARGET noise POST_BUILD COMMAND
+  cmake ARGS -E copy_if_different
+        "${CMAKE_CURRENT_SOURCE_DIR}/OpenSans-Regular.ttf"
+        "$<TARGET_FILE_DIR:noise>/OpenSans.ttf" COMMENT "Copying font."
+)
diff --git a/cmake/vcpkg.cmake b/cmake/vcpkg.cmake
new file mode 100644
index 0000000..58c2c05
--- /dev/null
+++ b/cmake/vcpkg.cmake
@@ -0,0 +1,11 @@
+# optional vcpkg support
+if(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
+        if(DEFINED ENV{VCPKG_ROOT})
+                set(CMAKE_TOOLCHAIN_FILE "$ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake"
+                                CACHE STRING "")
+        elseif(DEFINED ENV{VCPKG_INSTALLATION_ROOT})
+                set(CMAKE_TOOLCHAIN_FILE
+                                "$ENV{VCPKG_INSTALLATION_ROOT}/scripts/buildsystems/vcpkg.cmake"
+                                CACHE STRING "")
+        endif()
+endif()
diff --git a/config.h.in b/config.h.in
new file mode 100644
index 0000000..46f9ecd
--- /dev/null
+++ b/config.h.in
@@ -0,0 +1 @@
+#cmakedefine HAVE_FONT_SMOOTHING
diff --git a/noise.cc b/noise.cc
index b5651e8..065e854 100644
--- a/noise.cc
+++ b/noise.cc
@@ -1,8 +1,11 @@
+#include "config.h"
+
 #include <filesystem>
 #include <iostream>
 #include <random>
 #include <stdexcept>
 #include <vector>
+#include <cmath>
 
 #include <SFML/Graphics.hpp>
 
@@ -50,9 +53,9 @@ sf::Color random_color() {
 
 // Distort a black-white color. assume color_mode == 3 or 4.
 sf::Color distort(const sf::Color& c, float p = 2) {
-        return sf::Color(255 * std::powf(c.r / 255.0, p),
-                                                                         255 * std::powf(c.g / 255.0, p),
-                                                                         255 * std::powf(c.b / 255.0, p), 255);
+        return sf::Color(255 * std::pow(c.r / 255.0, p),
+                                                                         255 * std::pow(c.g / 255.0, p),
+                                                                         255 * std::pow(c.b / 255.0, p), 255);
 }
 
 bool in_range(const sf::Vector2u& size, const sf::Vector2u& v) {
@@ -146,11 +149,13 @@ int main(int argc, char* argv[]) {
         sf::RenderWindow window(sf::VideoMode(640, 400), "Noise");
 
         sf::Font font;
-        if (!font.loadFromFile(fs::path(argv[0]).parent_path() / "OpenSans.ttf")) {
+        if (!font.loadFromFile((fs::path(argv[0]).parent_path() / "OpenSans.ttf").string())) {
                 std::cerr << "FATAL: Failed to load font OpenSans.ttf." << std::endl;
                 return -1;
         }
+#ifdef HAVE_FONT_SMOOTHING
         font.setSmooth(true);
+#endif
 
         sf::Text counter("Iteration 0 Blur 0 Brightness 0", font);
         counter.setPosition(5, 5);