Spiky Ball Trap

Spiky Ball Traps can be found in Jungle Temple in Hardmode Underground Jungle Biomes.

When activated, the Traps dispense orange spiky balls that bounce several times, dealing around 90 damage to players and enemies. They have a cooldown of 4 seconds(5 version 1.3).

Spawn Limits
Before it spawn a spiky ball, the game goes through every spiky ball in the world, and add up their 'effect' on the trap based on the pixel distance between the trap's center and the spiky ball's center.(To compare, a tile on the map is 16*16) A spiky ball's effect is:

50, if the distance falls in [0,50)

15, [50,100)

10, [100,200)

8, [200,300)

6, [300,400)

5, [400,500)

4, [500,700)

3, [700,900)

2, [900,1200)

1, [1200,+infinity)

Sum the 'effect' up and if the sum is less than 200 (not equal), the spiky ball can spawn.

Tips

 * Effective for home defense, especially using the enemy-triggered Pressure Plate.
 * Effective for farming enemies. But due to the change in 1.3(spawning trap + extended cooldown time) it is not very suitable. Try Spear Trap instead.

History
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