drawSetColor

2 files changed, 35 insertions, 3 deletions

diff --git a/src/FLD.hpp b/src/FLD.hpp
index c404996..c00866f 100644
--- a/src/FLD.hpp
+++ b/src/FLD.hpp
@@ -6,6 +6,8 @@
 
 class FLD {
 public:
+	using Error = int;
+	using MainLoop = int (*)(FLD& fld, void *udata);
 	struct Config {
 		int width = 640;
 		int height = 480;
@@ -15,16 +17,20 @@ public:
 		bool hide_cursor = true;
 		std::string title = "FLD project";
 	};
+	struct Color {
+		float r = -1.0f;
+		float g = -1.0f;
+		float b = -1.0f;
+		float a = -1.0f;
+	};
 
 	const Config config;
 	READONLY(SDL_Window *, window, nullptr);
 	READONLY(SDL_Renderer *, renderer, nullptr);
 	READONLY(SDL_Texture *, target, nullptr);
 	READONLY(unsigned long, tick, 0);
+	READONLY(Color, drawColor, Color({0, 0, 0, 1}));
 public:
-	using Error = int;
-	using MainLoop = int (*)(FLD& fld, void *udata);
-
 	FLD(const Config& config);
 	FLD(const Config&& config);
 	~FLD();
@@ -34,6 +40,8 @@ public:
 
 	[[nodiscard]] Error drawBegin() const;
 	[[nodiscard]] Error drawEnd();
+	[[nodiscard]] Error drawSetColor(float r, float g, float b, float a=-1);
+	[[nodiscard]] Error drawSetColor(const Color& c);
 private:
 	bool shouldQuit = false;
 	struct {
diff --git a/src/drawSetColor.cpp b/src/drawSetColor.cpp
new file mode 100644
index 0000000..1c63aed
--- /dev/null
+++ b/src/drawSetColor.cpp
@@ -0,0 +1,24 @@
+#include "FLD.hpp"
+#include <SDL2/SDL_render.h>
+
+FLD::Error
+FLD::drawSetColor(float r, float g, float b, float a)
+{
+	if (r >= 0) _drawColor.r = r;
+	if (g >= 0) _drawColor.g = g;
+	if (b >= 0) _drawColor.b = b;
+	if (a >= 0) _drawColor.a = a;
+	if (SDL_SetRenderDrawColor(_renderer,
+	                           static_cast<int>(_drawColor.r * 0xff),
+	                           static_cast<int>(_drawColor.g * 0xff),
+	                           static_cast<int>(_drawColor.b * 0xff),
+	                           static_cast<int>(_drawColor.a * 0xff) < 0))
+		sdlError();
+	return 0;
+}
+
+FLD::Error
+FLD::drawSetColor(const Color& c)
+{
+	return drawSetColor(c.r, c.g, c.b, c.a);
+}