Converted all ints to floats for x coordinate purposes.

src/api/renderer.c

@@ -168,11 +168,11 @@ static int f_draw_rect(lua_State *L) {
 static int f_draw_text(lua_State *L) {
   RenFont** font = luaL_checkudata(L, 1, API_TYPE_FONT);
   const char *text = luaL_checkstring(L, 2);
-  int x_subpixel = luaL_checknumber(L, 3);
+  float x = luaL_checknumber(L, 3);
   int y = luaL_checknumber(L, 4);
   RenColor color = checkcolor(L, 5, 255);
-  x_subpixel = rencache_draw_text(L, *font, text, x_subpixel, y, color);
+  x = rencache_draw_text(L, *font, text, x, y, color);
-  lua_pushnumber(L, x_subpixel);
+  lua_pushnumber(L, x);
   return 1;
 }
 

src/rencache.c

@@ -127,9 +127,10 @@ void rencache_draw_rect(RenRect rect, RenColor color) {
   }
 }
 
-int rencache_draw_text(lua_State *L, RenFont *font, const char *text, int x, int y, RenColor color)
+float rencache_draw_text(lua_State *L, RenFont *font, const char *text, int x, int y, RenColor color)
 {
-  RenRect rect = { x, y, ren_font_get_width(font, text), ren_font_get_height(font) };
+  float width = ren_font_get_width(font, text);
+  RenRect rect = { x, y, (int)width, ren_font_get_height(font) };
   if (rects_overlap(screen_rect, rect)) {
     int sz = strlen(text) + 1;
     Command *cmd = push_command(DRAW_TEXT, COMMAND_BARE_SIZE + sz);
@@ -141,7 +142,7 @@ int rencache_draw_text(lua_State *L, RenFont *font, const char *text, int x, int
       cmd->tab_size = ren_font_get_tab_size(font);
     }
   }
-  return x + rect.width;
+  return x + width;
 }
 
 

src/rencache.h

@@ -5,13 +5,13 @@
 #include <lua.h>
 #include "renderer.h"
 
-void rencache_show_debug(bool enable);
+void  rencache_show_debug(bool enable);
-void rencache_set_clip_rect(RenRect rect);
+void  rencache_set_clip_rect(RenRect rect);
-void rencache_draw_rect(RenRect rect, RenColor color);
+void  rencache_draw_rect(RenRect rect, RenColor color);
-int  rencache_draw_text(lua_State *L, RenFont *font, 
+float rencache_draw_text(lua_State *L, RenFont *font, 
-  const char *text, int x, int y, RenColor color);
+  const char *text, float x, int y, RenColor color);
-void rencache_invalidate(void);
+void  rencache_invalidate(void);
-void rencache_begin_frame(lua_State *L);
+void  rencache_begin_frame(lua_State *L);
-void rencache_end_frame(lua_State *L);
+void  rencache_end_frame(lua_State *L);
 
 #endif

src/renderer.c

@@ -42,8 +42,8 @@ typedef struct {
 typedef struct RenFont {
   FT_Face face;
   GlyphSet* sets[MAX_GLYPHSET];
-  float size;
+  float size, space_advance, tab_advance;
-  short max_height, space_advance, tab_advance;
+  short max_height;
   bool subpixel;
   ERenFontHinting hinting;
   unsigned char style;
@@ -212,7 +212,8 @@ float ren_font_get_width(RenFont *font, const char *text) {
   while (text < end) {
     unsigned int codepoint;
     text = utf8_to_codepoint(text, &codepoint);
-    width += font_get_glyphset(font, codepoint)->metrics[codepoint % 256].xadvance;
+    float advance = font_get_glyphset(font, codepoint)->metrics[codepoint % 256].xadvance;
+    width += advance ? advance : font->space_advance;
   }
   const int surface_scale = renwin_surface_scale(&window_renderer);
   return width / surface_scale;
@@ -225,7 +226,7 @@ int ren_font_get_height(RenFont *font) {
   return font->size + 3;
 }
 
-int ren_draw_text(RenFont *font, const char *text, float x, int y, RenColor color) {
+float ren_draw_text(RenFont *font, const char *text, float x, int y, RenColor color) {
   SDL_Surface *surface = renwin_get_surface(&window_renderer);
   const RenRect clip = window_renderer.clip;
 

src/renderer.h

@@ -19,7 +19,7 @@ int ren_font_get_tab_size(RenFont *font);
 float ren_font_get_width(RenFont *font, const char *text);
 int ren_font_get_height(RenFont *font);
 float ren_font_get_size(RenFont *font);
-int ren_draw_text(RenFont *font, const char *text, float x, int y, RenColor color);
+float ren_draw_text(RenFont *font, const char *text, float x, int y, RenColor color);
 
 void ren_draw_rect(RenRect rect, RenColor color);