button binding function

2 files changed, 16 insertions, 4 deletions

diff --git a/lzr.c b/lzr.c
index 4e0ec7b..edf9d17 100644
--- a/lzr.c
+++ b/lzr.c
@@ -23,6 +23,9 @@ static struct {
 	int width, height;
 } images[LZR_MAX_IMAGES] = {0};
 static unsigned int color[3] = {0};
+static unsigned int map[LZR_BUTTON_COUNT] = {
+    SDL_SCANCODE_LEFT, SDL_SCANCODE_RIGHT, SDL_SCANCODE_UP,
+    SDL_SCANCODE_DOWN, SDL_SCANCODE_X,     SDL_SCANCODE_C};
 static bool input[LZR_BUTTON_COUNT] = {false};
 
 static char *_path_prefix(const char *path)
@@ -47,9 +50,6 @@ static char *_path_prefix(const char *path)
 
 static int _scode_to_button(unsigned int scode)
 {
-	static const unsigned int map[LZR_BUTTON_COUNT] = {
-	    SDL_SCANCODE_LEFT, SDL_SCANCODE_RIGHT, SDL_SCANCODE_UP,
-	    SDL_SCANCODE_DOWN, SDL_SCANCODE_X,     SDL_SCANCODE_C};
 	for (int i = 0; i < LZR_BUTTON_COUNT; i++)
 		if (map[i] == scode)
 			return i;
@@ -230,6 +230,17 @@ bool LZR_ButtonDown(LZR_Button btn)
 	return false;
 }
 
+void LZR_ButtonBind(LZR_Button btn, unsigned int code)
+{
+	if (btn < LZR_BUTTON_COUNT) {
+		map[btn] = code;
+		dx_log_trace("bound key %s to button %u",
+		             SDL_GetScancodeName(map[btn]), btn);
+	} else
+		dx_log_warn("button %u can't be remapped to key %s", btn,
+		            SDL_GetScancodeName(code));
+}
+
 int LZR_DrawBegin(void)
 {
 	if (config.target_fps > 0)
diff --git a/lzr.h b/lzr.h
index 451848d..1d44dbe 100644
--- a/lzr.h
+++ b/lzr.h
@@ -44,7 +44,8 @@ void LZR_Quit(void);
 bool LZR_ShouldQuit(void);
 bool LZR_PollEvent(LZR_Event *e);
 void LZR_CycleEvents(void);
-bool LZR_ButtonDown(LZR_Button);
+bool LZR_ButtonDown(LZR_Button btn);
+void LZR_ButtonBind(LZR_Button btn, unsigned int code);
 int LZR_ImageLoad(const char *path);
 int LZR_DrawBegin(void);
 int LZR_DrawEnd(void);