I am currently working on an "open world" RPG and I want to make a map like Warcraft 3, but I don' know where to start
Is Warcraft 3 using a special map rendering or it's just a 2d background?
How to make Units like Warcraft 3 or League of Legends ?
Thanks in advance
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That's too much to ask, Warcraft 3 is a 3D game, not 2D.
Creating units, each unit should have complex actions like pathfinding, booleans, states, animations, etc. You need to master your video game design before to create another strategy game.
WC3 uses tiles + cliffs + a height map (and units, structures and doodads on top of it). It is 3D, emulating all that in construct is not feasible. That doesn't mean that you cant create a two-dimensional RPG map, like in SNES RPGs etc..
Are you trying to make something like this ?
I can tell you it takes a fair bit of time, as you need to look at each units unique ability, movement, attack, as well as buildings, environment and resources.
I have actually put this project on the back burner, as I am waiting for multiplayer functionality to become native in C2.