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Feb 17, 2026
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Guide
Scripting Basics with Code Blocks API
Learn how to use the Code Blocks API to make interactive worlds.
Learn how to use the Code Blocks API to make interactive worlds.
The Bloxd scripting environment enforces a strict 16,000 character limit per Code Block. This constraint necessitates efficient code composition and strategic optimization. BloxdForge provides tools specifically designed to assist developers in maintaining code within this character budget while preserving functionality.
Scripts execute within a sandboxed JavaScript environment with access to a predefined API object. Direct DOM manipulation, external network requests, and certain JavaScript built-in functions are restricted for security and performance considerations. All game interaction must occur through the documented API methods.
Developing scripts within the constrained in-game code editor presents significant usability challenges. BloxdForge provides a comprehensive integrated development environment (IDE) with professional tooling specifically configured for Bloxd script development.
The integrated AI assistant has been trained on the complete Bloxd API documentation and common scripting patterns. Developers can request specific functionality through natural language queries. Example: "Create a script that applies Speed II effect when a player clicks this block." The assistant generates syntactically correct code utilizing appropriate API methods.
The AI assistant remains current with API updates and can provide explanations for generated code segments, facilitating learning and understanding of API mechanics.
The editor incorporates a specialized linter that validates code against the Bloxd API specification. Invalid function calls, incorrect parameter types, and deprecated methods are highlighted immediately. For instance, attempting to use "api.kill()" (which does not exist) instead of the correct "api.killLifeform()" triggers an immediate warning with suggested corrections.
The linter also identifies common logical errors such as undefined variables, scope issues, and incorrect event handler implementations.
A persistent character counter displays the current script length relative to the 16,000 character limit. This real-time feedback enables developers to make informed decisions about code structure and identify opportunities for optimization before exceeding the constraint.
The following API methods represent the fundamental functions for world interaction and player manipulation. All method signatures have been verified against the current API specification.
api.setPosition(id, x, y, z)Teleportation function. Immediately relocates the specified lifeform to the provided coordinates. Note: api.teleport does not exist in the current API specification.
Parameters: id (string), x (number), y (number), z (number)
api.setVelocity(id, x, y, z)Applies velocity vector to the specified lifeform. Commonly utilized for jump pads, launch mechanics, and knockback effects. Example implementation for vertical jump pad: api.setVelocity(playerId, 0, 12, 0)
Parameters: id (string), x (number), y (number), z (number)
api.giveItem(id, "item_name", count)Adds specified items to player inventory. Item identifiers are case-sensitive and must match the official naming convention. Reference the ITEM_NAMES.md documentation for complete item identifier list.
Parameters: id (string), item_name (string), count (number)
api.hasItem(id, "item_name")Returns boolean indicating whether the specified player possesses the named item. Essential for implementing conditional logic such as shop systems, key-card access, and quest progression tracking.
Parameters: id (string), item_name (string) | Returns: boolean
api.removeItem(id, "item_name", count)Removes specified quantity of items from player inventory. Used in conjunction with shop systems and consumable resources.
Parameters: id (string), item_name (string), count (number)
api.setBlock(x, y, z, "block_type")Places or modifies blocks at specified coordinates. Block type strings must correspond to valid block identifiers. This method forms the foundation for dynamic world modification scripts.
Parameters: x (number), y (number), z (number), block_type (string)
api.getBlock(x, y, z)Returns the block type identifier at the specified coordinates. Useful for conditional logic based on world state.
Parameters: x (number), y (number), z (number) | Returns: string
api.createExplosion(x, y, z, power)Generates explosion at specified coordinates with defined power level. Higher power values create larger blast radius and increased block destruction.
Parameters: x (number), y (number), z (number), power (number)
Scripts interact with player actions and world events through event listener registration. The API provides several event types that trigger callback execution when specific conditions occur.
api.on("blockClick", function(event) { ... });Executes callback when a player clicks the code block. The event object contains player ID and click coordinates, enabling player-specific responses.
api.on("playerJoin", function(event) { ... });Triggers when a player enters the world instance. Commonly used for initialization scripts, welcome messages, and player-specific setup procedures.
api.on("playerLeave", function(event) { ... });Executes when a player disconnects from the world. Useful for cleanup operations and persistent data storage.
Event listeners should be registered during script initialization. Multiple listeners can be attached to the same event type, and they will execute in registration order.
Maintaining code within the 16,000 character limit requires strategic optimization techniques without sacrificing functionality or readability.
playerIdentifier with abbreviated forms like pId after development and testing phases.The BloxdForge AI assistant maintains training on the current API documentation. Request "minify and optimize this script" to receive an automated optimization pass that reduces character count while preserving functionality. The AI identifies optimization opportunities that may not be immediately apparent to human developers.
The following patterns represent frequently implemented script functionalities and demonstrate proper API usage.
api.on("blockClick", function(e) {
api.setPosition(e.playerId, 100, 65, 200);
});Simple teleportation implementation triggered by block interaction.
api.on("blockClick", function(e) {
if (api.hasItem(e.playerId, "diamond", 5)) {
api.removeItem(e.playerId, "diamond", 5);
api.giveItem(e.playerId, "diamond_sword", 1);
}
});Conditional item exchange demonstrating inventory check and modification.
api.on("blockClick", function(e) {
api.setVelocity(e.playerId, 0, 15, 0);
});Vertical velocity application for jump pad functionality.