Drawing validity
Validity when making a selection
While editor or playing a game, it may be necessary to make a selection in the 3D World. In many cases, there are parts of the world that are not valid for selection. For example, when making a selection for placing a construction, the building may not be placed in a location where a construction already exists. Similarly, when making a selection to remove a part of a specific building, any part of the selection that does not actually select the building will be invalid.
When a selection is made, it may be composed of both valid and invalid parts. If the action, for which the selection is made, is performed, only the valid parts of the selection will be used to perform the action. Invalid parts of your selection are ignored. When the selection has other effects while selecting, such as the calculation of a price for the action to take, the invalid parts of your selection are ignored as well.
Validity colors
In general, the following colors indicate validity:
Natural colors
This is how the world looks normally. This means this part of the game area would be valid for selection.
Grey
This is a part of the world that is not valid for selection.
Green
This part of the world has been selected, and is also a valid selection. When taking the action for which this selection is made, this part of the 3D World will be affected.
Red
This part of the world has been selected, but is not a valid selection. When taking the action for which this selection is made, this part of the 3D World will remain unaffected. Other effects of the selection, such as the calculation of a price for the action, are unaffected by invalid parts of the selection.