From 27b8ca961a3a2e76d04b41c1506ec86ad88c0802 Mon Sep 17 00:00:00 2001
From: herbglitch <herbglitch@github.com>
Date: Fri, 18 Aug 2023 23:06:41 -0600
Subject: [PATCH] added frame index selection

---
 include/arc/graphics/sprite.h |  8 ++++++++
 src/graphics/sdl/sprite.c     | 10 ++++++++++
 2 files changed, 18 insertions(+)

diff --git a/include/arc/graphics/sprite.h b/include/arc/graphics/sprite.h
index a0ca565..556ee90 100644
--- a/include/arc/graphics/sprite.h
+++ b/include/arc/graphics/sprite.h
@@ -62,6 +62,14 @@ void ARC_Sprite_Render(ARC_Sprite *sprite, ARC_Renderer *renderer, ARC_Rect *ren
  */
 void ARC_Sprite_RenderRotated(ARC_Sprite *sprite, ARC_Renderer *renderer, ARC_Rect *renderBounds, ARC_Point *center, double angle);
 
+/**
+ * @brief switches ARC_Sprite's frame to specified index
+ * 
+ * @param sprite ARC_Sprite that is having its frame set
+ * @param index  uint32_t to set ARC_Sprite's frame index to
+ */
+void ARC_Sprite_SetFrameIndex(ARC_Sprite *sprite, uint32_t index);
+
 /**
  * @brief switches ARC_Sprite's frames to next for animation
  * 
diff --git a/src/graphics/sdl/sprite.c b/src/graphics/sdl/sprite.c
index a28aeaa..216866d 100644
--- a/src/graphics/sdl/sprite.c
+++ b/src/graphics/sdl/sprite.c
@@ -5,6 +5,7 @@
 #include "arc/graphics/sdl/renderer.h"
 #include "arc/math/point.h"
 #include "arc/math/rectangle.h"
+#include "arc/std/errno.h"
 #include <stdlib.h>
 
 void ARC_Sprite_Create(ARC_Sprite **sprite, ARC_Spritesheet *spritesheet, ARC_Array *frames){
@@ -35,6 +36,15 @@ void ARC_Sprite_RenderRotated(ARC_Sprite *sprite, ARC_Renderer *renderer, ARC_Re
     SDL_RenderCopyEx((SDL_Renderer *)renderer, sprite->spritesheet->texture, (SDL_Rect *)sprite->frames->data + *sprite->frameIndex, (SDL_Rect *)renderBounds, angle, (SDL_Point *)center, SDL_FLIP_NONE);
 }
 
+void ARC_Sprite_SetFrameIndex(ARC_Sprite *sprite, uint32_t index){
+    if(sprite->frames->size <= index){
+        arc_errno = ARC_ERRNO_DATA;
+        ARC_DEBUG_LOG(arc_errno, "in ARC_Sprite_SetFrameIndex(sprite, %d); index out of bounds", index);
+        return;
+    }
+    *sprite->frameIndex = index;
+}
+
 void ARC_Sprite_IterateFrame(ARC_Sprite *sprite){
     ++*sprite->frameIndex;