Tynker Snake and Ladder Game – Step-by-Step Guide

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 In this project, we build a classic Snake and Ladder game using Tynker block coding.

Players roll a dice, move their character using arrow keys, climb ladders, and get bitten by snakes.
The game uses messages, variables, random numbers, and collision detection to control gameplay.

This project is excellent for teaching:

  • Turn-based logic

  • Dice simulation

  • Keyboard controls

  • Conditional statements

  • Game rules implementation

  • Click the arrow button to roll the dice

  • Move the player by the number shown on the dice

  • Land on ladders to climb up

  • Avoid snakes or slide down

  • Reach the destination square to win

 Game Elements Used

 Actors

  • Player (actor)

  • Goblin / Opponent (optional extension)


 Game Objects

  • Dice

  • Arrow Button (to roll dice)

 Board Elements

  • Green Chip – Ladder

  • Red Chip – Snake

Step-by-Step Coding Guidelines

 Step 1: Arrow Button – Turn & Dice Trigger

Code Logic:

when actor clicked
→ if choice = 1
   → send message goblinchoice to Dice
   → set choice to 0
else
   → send message actorchoice to Dice
   → set choice to 1

Explanation:

  • Controls turn switching

  • choice variable decides whose turn it is

  • Sends message to dice to roll for the correct player

 Introduces turn-based game logic

Step 2: Dice Roll Animation & Random Number

Code (Dice):

when I receive actorchoice / goblinchoice
→ repeat 10
   → set diceroll to pick random 1 to 6
   → switch costume to diceroll
   → wait 0.1 secs
→ send message move 1 / move 2
→ say diceroll for 2 secs

Explanation:

  • Simulates dice rolling effect

  • Uses pick random 1 to 6

  • Displays dice face using costumes

  • Sends movement message to player

 Core concept: Random numbers + animation


 Step 3: Player Movement Using Arrow Keys

Code:

when up arrow pressed
→ if choice = 1
   → change y by 10
when down arrow pressed
→ if choice = 1
   → change y by -10
when right arrow pressed
→ if choice = 1
   → change x by 10
when left arrow pressed
→ if choice = 1
   → change x by -10

Explanation:

  • Player can move only during their turn

  • Arrow keys control movement

  • Helps students understand conditional input control

 Great intro to keyboard-based navigation

 Step 4: Display Movement Instructions

Code:

when I receive move 1
→ say "move me diceroll steps using arrow keys" for 2 secs

Explanation:

  • Guides player on how many steps to move

  • Improves user experience

  • Reinforces dice logic

 Step 5: Ladder Detection (Green Chip)

Code:

when touching Chip Green
→ set detect to 0
→ repeat while touching Chip Green
   → wait 0.01 secs
   → change detect by 1
→ if detect > 3
   → say "hey i got a ladder"
   → glide 1 sec to ladder top position

Explanation:

  • Prevents instant triggering

  • Ensures proper collision detection

  • Moves player upward (ladder effect)

 Introduces collision timing logic

 Step 6: Snake Bite Detection (Red Chip)

Code:

when touching Chip Red
→ set detect to 0
→ repeat while touching Chip Red
   → wait 0.01 secs
   → change detect by 1
→ if detect > 3
   → say "i got bitten"
   → glide 1 sec to snake tail position

Explanation:

  • Simulates snake bite

  • Player slides down

  • Adds challenge and excitement

Teaches game penalties

 How to Play the Game

  1. Click the arrow button to roll the dice

  2. Note the dice number

  3. Move player using arrow keys

  4. Climb ladders, avoid snakes

  5. Take turns and race to the end



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