Minimap screenshot: add console params and help to mostly match screenshot.

src/console_cmds.cpp

@@ -49,8 +49,6 @@ static bool _script_running; ///< Script is running (used to abort execution whe
 #define DEF_CONSOLE_CMD(function) static bool function(byte argc, char *argv[])
 #define DEF_CONSOLE_HOOK(function) static ConsoleHookResult function(bool echo)
 
-void SaveMinimap();
-
 /****************
  * command hooks
  ****************/
@@ -1393,7 +1391,24 @@ DEF_CONSOLE_CMD(ConScreenShot)
 
 DEF_CONSOLE_CMD(ConMinimap)
 {
-	SaveMinimap();
+	if (argc == 0) {
+		IConsoleHelp("Create a flat image of the game minimap. Usage: 'minimap [owner] [file name]'");
+		IConsoleHelp("'owner' uses the tile owner to colour the minimap image, this is the only mode at present");
+		return true;
+	}
+
+	const char *name = NULL;
+	if (argc > 1) {
+		if (strcmp(argv[1], "owner") != 0) {
+			/* invalid mode */
+			return false;
+		}
+	}
+	if (argc > 2) {
+		name = argv[2];
+	}
+
+	SaveMinimap(name);
 	return true;
 }
 

src/screenshot.cpp

@@ -924,7 +924,7 @@ static void MinimapOwnerCallback(void *userdata, void *buf, uint y, uint pitch,
 /**
  * Saves the complete savemap in a PNG-file.
  */
-void SaveMinimap()
+void SaveMinimap(const char *name)
 {
 	/* setup owner table */
 	const Company *c;
@@ -941,6 +941,9 @@ void SaveMinimap()
 			_colour_gradient[c->colour][5] * 0x01010101;
 	}
 
+	_screenshot_name[0] = '\0';
+	if (name != NULL) strecpy(_screenshot_name, name, lastof(_screenshot_name));
+
 	const ScreenshotFormat *sf = _screenshot_formats + _cur_screenshot_format;
 	sf->proc(MakeScreenshotName("minimap", sf->extension), MinimapOwnerCallback, NULL, MapSizeX(), MapSizeY(), 32, _cur_palette.palette);
 }

src/screenshot.h

@@ -29,6 +29,7 @@ enum ScreenshotType {
 void SetupScreenshotViewport(ScreenshotType t, struct ViewPort *vp);
 bool MakeHeightmapScreenshot(const char *filename);
 bool MakeScreenshot(ScreenshotType t, const char *name);
+void SaveMinimap(const char *name);
 
 extern char _screenshot_format_name[8];
 extern uint _num_screenshot_formats;