From e46475cdd2e0a9cff9330ec88d08640f19164b42 Mon Sep 17 00:00:00 2001
From: kdx <kdx.42@42l.fr>
Date: Tue, 28 Mar 2023 07:25:59 +0000
Subject: fancy rectangle drawing

---
 headers/TZR_render.h        |  5 ++++-
 headers/TZR_types.h         | 11 +++++++++++
 sources/TZR_DrawRectangle.c | 11 ++++++++---
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/headers/TZR_render.h b/headers/TZR_render.h
index 592440c..99132a2 100644
--- a/headers/TZR_render.h
+++ b/headers/TZR_render.h
@@ -41,10 +41,13 @@ int TZR_DrawLine(int x0, int y0, int x1, int y1);
 
 /* Return -1 on error. Draw rectangle at `x`;`y` position of size `w`x`h` in the
  * framebuffer. */
+#define TZR_DrawRectangle(...) _TZR_DrawRectangle( \
+	&(const TZR_DrawRectangleArgs){ \
+	.x=0, .y=0, .w=0, .h=0, .fill=false, .center=false, ._=0, __VA_ARGS__ })
 #ifdef TZR_PARANOID
 [[nodiscard]]
 #endif
-int TZR_DrawRectangle(bool fill, int x, int y, int w, int h);
+int _TZR_DrawRectangle(const TZR_DrawRectangleArgs *args);
 
 /* Return -1 on error. Draw texture ressource `id` at `x`;`y` position of
  * the framebuffer. */
diff --git a/headers/TZR_types.h b/headers/TZR_types.h
index 32f734a..183fe5d 100644
--- a/headers/TZR_types.h
+++ b/headers/TZR_types.h
@@ -33,6 +33,7 @@ typedef struct TZR_Resource TZR_Resource;
 typedef enum TZR_EventType TZR_EventType;
 typedef struct TZR_Event TZR_Event;
 typedef struct TZR_DrawImageArgs TZR_DrawImageArgs;
+typedef struct TZR_DrawRectangleArgs TZR_DrawRectangleArgs;
 typedef enum TZR_KeyState TZR_KeyState;
 
 struct TZR_Config {
@@ -103,3 +104,13 @@ struct TZR_DrawImageArgs {
 	float sy;
 	bool center;
 };
+
+struct TZR_DrawRectangleArgs {
+	int _;
+	int x;
+	int y;
+	int w;
+	int h;
+	bool fill;
+	bool center;
+};
diff --git a/sources/TZR_DrawRectangle.c b/sources/TZR_DrawRectangle.c
index 879eaba..0ea81fa 100644
--- a/sources/TZR_DrawRectangle.c
+++ b/sources/TZR_DrawRectangle.c
@@ -4,10 +4,15 @@
 #include <SDL2/SDL_render.h>
 
 int
-TZR_DrawRectangle(bool fill, int x, int y, int w, int h)
+_TZR_DrawRectangle(const TZR_DrawRectangleArgs *args)
 {
-	const SDL_Rect rect = { x, y, w, h };
-	if (fill) {
+	const SDL_Rect rect = {
+		args->x - args->center * (args->w / 2),
+		args->y - args->center * (args->h / 2),
+		args->w,
+		args->h
+	};
+	if (args->fill) {
 		if (SDL_RenderFillRect(___tzr_renderer, &rect) < 0)
 			return sdl_error(-1);
 	} else {
-- 
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