Obby (WIP) • vhmp.dev

Obby

An obby is a classic obstacle game in Roblox. This project focuses on coding certain common components of an Obby from scratch.

List of Common Mechanics

Some common mechanics include

Damage Brick - Kill Brick, Fire Brick
Path Pattern - A correct path is illuminated before disappearing for a couple of seconds
Stages System - Spawn locations
Progress Saving - Saving The stage the player is on through DataStore.

Damage Brick

When the player touches a damage brick, their health will decrease. We’re going to be using the Touched event for both this and two different bricks.

Kill Brick

Kill Brick simply sets the health of the player to zero when the player touches it.

Solution

workspace/KillBrick/Script

part = script.Parent

function burn(otherPart)
    -- First, we confirm if the otherPart is a body part
    local character = otherPart.Parent
    local humanoid = character:FindFirstChild("Humanoid")
    if not humanoid then return end

    humanoid.Health = 0
end

part.Touched:Connect(burn)

Fire Brick

Unlike the Kill Brick, the fire brick deals damages over time and is much more complex. We have to make cool-down system.

Burn Brick #1 Simply decrease the health instead of setting it to 0.

Solution

part = script.Parent

function burn(otherPart)
    -- First, we confirm if the otherPart is a body part
    local character = otherPart.Parent
    local humanoid = character:FindFirstChild("Humanoid")
    if not humanoid then return end

    humanoid.Health -= 5
    -- Code above is same as:
    -- humanoid.Health = humanoid.Health - 5
end

part.Touched:Connect(burn)

Burn Brick #2 - Countdown system attempted

Solution

-- the function os.time() returns seconds since January 1st of 1970.
savedTime = os.time()

function burn(otherPart)
    -- First we once again confirm if otherPart is a body part
    local character = otherPart.Parent
    local humanoid = character:FindFirstChild("Humanoid")
    if not humanoid then return end

    -- Cooldown of 1 second
    if os.time() - savedTime > 1 then
        humanoid.Health -= 5
    end
end

Bug: In the first version, we thought the burning effect worked because multiple body parts was causing the burn. In the next version we have to begin integrating the event TouchEnded to deal damage gradually until the player stops touching the part

Solution

charactersTouching = {
    -- ["Player1"] = {12312512, true, <Character>}, -- touching is still occuring.
    -- ["Player2"] = {123451243, false, <Character>}, -- touch stops about to be removed from the table
    -- ["Player3"] = nil -- not actually in the table anymore
}

part = script.Parent

function isCharacter(otherPart: BasePart)
    local potentialCharacter = otherPart.Parent
    local humanoid = potentialCharacter:FindFirstChild("Humanoid")
    if humanoid then return potentialCharacter end
    return false
end

function startBurn(otherPart: BasePart)
    local character = isCharacter(otherPart)
    if not character then return end
    if charactersTouching[otherPart] then return end
    charactersTouching[otherPart] = {os.time(), true, character}
end

function stopBurn(otherPart: BasePart)
    local character = isCharacter(otherPart)
    if not character then return end
    charactersTouching[character.Name][2] = false
end

function burnOnStandBy()
    for characterName, data in charactersTouching do
        if not data[2] or not data[3] then
            charactersTouching[characterName] = nil
            continue
        end
        if os.time() - data[1] > 1 then
            data[3].Humanoid.Health -= 5
        end
    end
end

part.Touched:Connect(startBurn)
part.Touched:Connect(stopBurn)
part.Heartbeat:Connect(burnOnStandby)