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Stage 7: Rolling Rocks + cover

Course progressStage 7 of 10
~40 min
Before you start

Make sure the hidden hazard field has a fair route to Stage 7.

Build

a ramp, a CoverBlock, and rolling boulders

Learn

how timing and safe cover make moving hazards fair

Ship

a stage where players dodge rocks instead of guessing

The big idea​

Moving hazards are exciting when players can read them. A rolling rock should have a rhythm, and the CoverBlock should give players a safe plan.

New words
spawner
a part whose script creates new game objects
Debris
a Roblox service that removes objects after a delay
rhythm
a repeated pattern the player can learn

Build it​

Step 1 — Build the ramp and cover​

Build this part

RockRamp

Block
Open recipe
Size
14 × 2 × 36
Color
Medium stone grey
Material
Slate
Anchored
✓ Yes
Build this part

CoverBlock

Block
Open recipe
Size
10 × 10 × 2
Color
Dark stone grey
Material
Concrete
Anchored
✓ Yes
Place
Beside the ramp where players can hide
Build this part

BoulderSpawner

Block
Open recipe
Size
4 × 1 × 4
Color
Bright yellow
Material
Neon
Anchored
✓ Yes
Place
At the high end of RockRamp
Target
BoulderTarget

Add one marker where the rocks should roll:

Build this part

BoulderTarget

Block
Open recipe
Size
2 × 1 × 2
Color
Bright yellow
Material
Neon
Anchored
✓ Yes
Place
At the low end of RockRamp

Make BoulderTarget transparent if you want it hidden.

Step 2 — Spawn simple boulders​

Insert a Script inside BoulderSpawner:

local spawner = script.Parent
local target = workspace:WaitForChild("BoulderTarget")
local Debris = game:GetService("Debris")
local PUSH = 45

while true do
	local rock = Instance.new("Part")
	rock.Shape = Enum.PartType.Ball
	rock.Size = Vector3.new(5, 5, 5)
	rock.Position = spawner.Position + Vector3.new(0, 4, 0)
	rock.Color = Color3.fromRGB(90, 70, 50)
	rock.Material = Enum.Material.Slate
	rock.Anchored = false
	rock.Parent = workspace

	local direction = target.Position - spawner.Position
	if direction.Magnitude > 0 then
		rock:ApplyImpulse(direction.Unit * PUSH * rock.AssemblyMass)
	end

	Debris:AddItem(rock, 6)
	task.wait(3)
end

Press Play. Watch the rocks. Move BoulderTarget so the rocks roll down the ramp, then move the ramp, spawner, target, or cover until the stage has a learnable rhythm.

Step 3 — Add the Stage 8 checkpoint​

Place the Stage 8 SpawnLocation after the ramp. Add StageNumber = 8 and the matching Team. Give this checkpoint the same settings as Stage 1 (check AllowTeamChangeOnTouch, uncheck Neutral, match the pad's TeamColor to its Team), and uncheck AutoAssignable on the new Team so players always start at Stage 1.

Understand it​

The spawner creates an unanchored ball, gives it one impulse toward BoulderTarget, waits, and does it again. This impulse stays in a server Script because the rock is created by the server. That is different from launching a player character, where ParkourLaunchClient applies the impulse on the player's own computer.

Try this​

Learning beat

Try this

Three short experiments. Predict before you run, then test your guess.

Predict first

What happens if the wait changes from 3 to 1?

Compare

Try slow rocks and fast rocks. Which gives the best "I can learn this" feeling?

Connect

What other obstacle could use a rhythm instead of random danger?

Test your stage​

  • Boulders spawn on a steady beat.
  • Players can hide behind CoverBlock.
  • The route is hard but readable.
  • Stage 8 checkpoint works.

If it breaks​

  • No rocks appear. Check the Script is inside BoulderSpawner.
  • Rocks roll the wrong way. Move BoulderTarget to the low end of the ramp.
  • Too many rocks pile up. Confirm Debris:AddItem(rock, 6) is in the script.
  • The stage feels impossible. Lower PUSH or increase the wait.
Coach notes

Stage 7 is the hardest required script in the younger path. Pair students, type as a room if needed, and protect the tuning/playtesting time.