17 replies to this topic

[mmaarrkkuuss]

Tower Defense example
Description:Basics of a tower defense game.

Type: Gmk.
Gm version: Game maker 7.0 unregistered.
Link:
size: 112 kb.

Other info: Has no upgrade system. Yet. EDIT: Yay! It has now.



Covers:
-Standard towers and buttons.
-Upgrade system.
-A creepspawn system which allowes you to make many levels in no time.
-Range.
-Menu

[Dailyn_Game_maker_in_training]

Dude the game idea works and i like the basis. When you add the leveling (upgrading) system be sure to have at least five levels per tower cause then it's more fun! With of course the "speacail" towers ex. the strongest ones.
Besides that keep at it we need more TD games. Good Job!

[mmaarrkkuuss]

Thanks for the nice feedback.
I do only plan to make one more tower open source, cause I don't want to give my whole game away.

[dotoriton]

I can use this like an mini game if it get more towers better ones (the sprites!) AND when you got upgrading pm me when you are p.s ITS GREAT 7/10

[mmaarrkkuuss]

Update
This update has:
-Two difficulties.
-Upgrade system.

[General McSlave]

Yay good job, I hope to see some more tower defense games as a result off this. I hope to use it sometime too, good job again.

[a2h]

Hmm, nice.

I suppose this is a clone of the Tower Defence thing by Roman Sanine? Or the Warcraft III thingy?

[mmaarrkkuuss]

You need these objects: a button, a projectile, a tower and a marker (uses same sprite as tower.)

I really can't teach you how to do the upgrade system if you can't do code. Tell me if you can.

Button:
Create event:

Set variable Hover to 0.

Begin step event:

Set variable Hover to 0.

Mouse event no button:

Set variable Hover to 1.

Left pressed:

Create instance of object marker at position(mouse_x,mouse_y)

Draw event:

Draw sprite at relative position(0,0)
if variable Hover is equal to 1
{Start of block
  Set color. (Your decision)
  at position room_width/2 draw text "Whatever you want to say"
}End of block

Marker:
Step event:

Jump to given position(mouse_x,mouse_y)

if score(what I use for money) is greater than 249 (if the prize of the tower is 250)
{Start of block
  Set variable score relative to -250
  Change instance to object tower.
}End of block
else
{Start of block
  destroy instance self
}End of block

Draw event:

Draw sprite spr_Tower at relative position (0,0) (if your sprite is centered)
Draw circle with relative vertices (-34,-34) and (66,66), outline.

Tower object:
Create event:

Set variable Showrange to 0.
Set variable Deactivated to 0.
Set variable Menuvar to 0.
Set variable Strikeshot to 0.
Set variable ProjectileID to 0.

Destroy event:

Set score relative to 250.

Step event:

If the number of enemies is greater than 0
{Start of block
  With chance 1 out of 3 perform the next action(s)
    {Start of block
       Create instance of object projectile at relative position (0,0)
     }
}

Collision road:

destroy instance self

Intersect boundary and outside room:

Destroy instance self

Draw event:

Draw sprite tower at relative position (0,0)
Draw circle with relative vertices(-50,-50) and (50,50)

Projectile object:
Create event:

Check expression: distance_to_object(Target)<50
  {
       Move towards point (Enemy.x,Enemy.y) at speed 15
  }

Step event:

Check expression: distance_to_object(Tower)>50
{
destroy instance self
}

Collision Enemy:
[code]destroy instance self

I'll post the creepspawn-system tomorrow. I'm not sure if I can explain it. :/

[mmaarrkkuuss]

Hmm, nice.

I suppose this is a clone of the Tower Defence thing by Roman Sanine? Or the Warcraft III thingy?

<{POST_SNAPBACK}>

Well, It's more like a clone of a clone. I don't know where this Tower defence started at all.

[Appolo]

How do exit? o_O

[Unib5]

Hmm...This tutorial was good, but it definatly needs more towers. And the range on the towers is puny.

[A13x]

be greatful he posted this at all punib5

[Fratrino]

very cool!

[xGamerZx]

Instead of making a new object for each enemy, you could make one object that covers all enemies. For speed, test for the level in the object. For different health, use something like 50+(level*25). It adds 25 health for each level that you progress though. However, this does not allow for more than 1 type of enemy per level.

[Rybo5000]

I keep trying to motivate myself into starting a Tower Defence game...........and this engine is pretty awesome.

[Blue Falcon]

thx for te help but it is still pretty confusing

[benjabby]

can you make a turret rotate toward the enemy in an unregisted TD

[Zgamemaker]

Thanks for the Engine but it needs a whole lot more work. I am not the best programmer ever but I think this is a great start for a experienced programmer. Thanks for the help I've been wanting to make a game like this for quite some time!