Refactor config file API.

The config file API previously relied on binding config variables
using M_BindVariable() which took a void pointer. It occurred to me
that if used on a boolean variable, this would be erroneous, but the
void pointer would make it impossible to tell. Split this into
separate M_Bind{Foo}Variable() functions based on type, which allows
for proper type checking on the pointers that are passed.

Vaguely related to #509.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/m_config.h b/src/m_config.h
index a17de2b4..43882a49 100644
--- a/src/m_config.h
+++ b/src/m_config.h
@@ -26,10 +26,12 @@ void M_LoadDefaults(void);
 void M_SaveDefaults(void);
 void M_SaveDefaultsAlternate(char *main, char *extra);
 void M_SetConfigDir(char *dir);
-void M_BindVariable(char *name, void *variable);
+void M_BindIntVariable(char *name, int *variable);
+void M_BindFloatVariable(char *name, float *variable);
+void M_BindStringVariable(char *name, char **variable);
 boolean M_SetVariable(char *name, char *value);
 int M_GetIntVariable(char *name);
-const char *M_GetStrVariable(char *name);
+const char *M_GetStringVariable(char *name);
 float M_GetFloatVariable(char *name);
 void M_SetConfigFilenames(char *main_config, char *extra_config);
 char *M_GetSaveGameDir(char *iwadname);