prepare for loading a language file

projects/openrct2.vcxproj

@@ -129,6 +129,12 @@
   <ItemGroup>
     <None Include="..\openrct2.exe" />
   </ItemGroup>
+  <ItemGroup>
+    <Text Include="..\data\language\english.txt">
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+      </DeploymentContent>
+    </Text>
+  </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{D24D94F6-2A74-480C-B512-629C306CE92F}</ProjectGuid>
     <RootNamespace>openrct2</RootNamespace>

projects/openrct2.vcxproj.filters

@@ -16,6 +16,12 @@
     <Filter Include="Windows">
       <UniqueIdentifier>{611458dc-7dd2-4c37-af0f-306cf9d85fb9}</UniqueIdentifier>
     </Filter>
+    <Filter Include="Data">
+      <UniqueIdentifier>{ee2e3a6f-1209-407b-8000-a6a4b88d28d9}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="Data\Language">
+      <UniqueIdentifier>{b344ca0f-b412-4924-be08-54bb6f83c3dd}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\src\addresses.h">
@@ -350,4 +356,9 @@
       <Filter>Resource Files</Filter>
     </None>
   </ItemGroup>
+  <ItemGroup>
+    <Text Include="..\data\language\english.txt">
+      <Filter>Data\Language</Filter>
+    </Text>
+  </ItemGroup>
 </Project>

src/rct2.c

@@ -49,6 +49,7 @@
 #include "track.h"
 #include "viewport.h"
 #include "sprite.h"
+#include "string_ids.h"
 
 typedef struct tm tm_t;
 
@@ -75,6 +76,9 @@ __declspec(dllexport) int StartOpenRCT(HINSTANCE hInstance, HINSTANCE hPrevInsta
 {
 	print_launch_information();
 
+	// OpenRCT2 initialisation
+	language_open("data/language/english.txt");
+
 	// Begin RCT2
 	RCT2_GLOBAL(RCT2_ADDRESS_HINSTANCE, HINSTANCE) = hInstance;
 	RCT2_GLOBAL(RCT2_ADDRESS_CMDLINE, LPSTR) = lpCmdLine;

src/string_ids.c

@@ -1068,11 +1068,6 @@ char real_name_initials[] = {
 void format_string_part_from_raw(char **dest, const char *src, char **args);
 void format_string_part(char **dest, rct_string_id format, char **args);
 
-const char *get_string(rct_string_id id)
-{
-	return RCT2_ADDRESS(0x009BF2D4, const char*)[id];
-}
-
 void format_integer(char **dest, int value)
 {
 	int digit;
@@ -1661,3 +1656,73 @@ void reset_saved_strings() {
 		RCT2_ADDRESS(0x135A8F4, uint8)[i * 32] = 0;
 	}
 }
+
+// Buffer storing all the string data
+long language_buffer_size = 0;
+char *language_buffer = NULL;
+
+// List of string pointers into the string data
+int language_num_strings = 0;
+char **language_strings = NULL;
+
+const char *get_string(rct_string_id id)
+{
+	const char *str = language_strings == NULL ?
+		RCT2_ADDRESS(0x009BF2D4, const char*)[id] :
+		language_strings[id];
+
+	return str == NULL ? "" : str;
+}
+
+int language_open(const char *filename)
+{
+	// WIP, file can be loaded in but not in a suitable state.
+	// Due to loading an uncompiled text language file, tokens surrounded with braces need to be converted to the correct
+	// format character code. Therefore the language can not stay in its raw form and must be re-written as the text file is
+	// parsed.
+
+	// get_string returns the original game string address if no language is loaded in.
+	return 0;
+
+	FILE *f = fopen(filename, "rb");
+	if (f == NULL)
+		return 0;
+
+	fseek(f, 0, SEEK_END);
+	language_buffer_size = ftell(f);
+	language_buffer = calloc(1, language_buffer_size);
+	fseek(f, 0, SEEK_SET);
+	fread(language_buffer, language_buffer_size, 1, f);
+	fclose(f);
+
+	language_strings = calloc(STR_COUNT, sizeof(char*));
+
+	int i, stringIndex = 0, searchForEndLine = 0;
+	for (i = 0; i < language_buffer_size; i++) {
+		char *c = &language_buffer[i];
+
+		if (searchForEndLine) {
+			if (*c == '\n' || *c == '\r') {
+				*c = 0;
+				searchForEndLine = 0;
+			}
+		} else if (*c == ':') {
+			language_strings[stringIndex++] = c + 1;
+			searchForEndLine = 1;
+		}
+	}
+	language_num_strings = stringIndex;
+
+	return 1;
+}
+
+void language_close()
+{
+	if (language_buffer != NULL)
+		free(language_buffer);
+	language_buffer_size = 0;
+
+	if (language_strings != NULL)
+		free(language_strings);
+	language_num_strings = 0;
+}

src/string_ids.h

@@ -28,6 +28,10 @@ void generate_string_file();
 void reset_saved_strings();
 void error_string_quit(int error, rct_string_id format);
 
+const char *get_string(rct_string_id id);
+int language_open(const char *filename);
+void language_close();
+
 enum {
 	// Font format codes
 
@@ -755,6 +759,8 @@ enum {
 	STR_PAGE_3 = STR_PAGE_1 + 2,
 	STR_PAGE_4 = STR_PAGE_1 + 3,
 	STR_PAGE_5 = STR_PAGE_1 + 4,
+
+	STR_COUNT = 4000
 };
 
 #endif