tile_utils.c File Reference

Utility functions for tile-based environment. More...

#include <maps.h>
#include <math.h>
#include <random.h>

Functions
void	Tile_FromPixelPoint (Vec2 pixelPoint, Vec2 *chunkIndex, Vec2 *tileIndex)
	[Utility] Converts a pixel position to tile and chunk indices
bool	Tile_IsValid (Vec2 tileIndex)
	[Utility] Checks if a tile index is valid within a chunk
Vec2	Tile_GetPositionFromPixel (Vec2 pixelPoint)
	[Utility] Converts a pixel point to a tile position
SDL_Rect	Tile_GetRectFromPixel (Vec2 pixelPoint)
	[Utility] Gets the rectangle for a tile from a pixel point
Vec2	Tile_GetRandomPixelInRect (SDL_Rect rect)
	[Utility] Gets a random pixel coordinate within a rectangle
Vec2	Tile_TileIndexToPixel (Vec2 tileIndex, Vec2 chunkIndex)
	[Utility] Converts tile and chunk indices to a world pixel position

Detailed Description

Utility functions for tile-based environment.

Provides coordinate conversion, validation, and helper functions for the tile-based environment system.

Author

Mango

Date

2025-03-03

Function Documentation

Tile_FromPixelPoint()

void Tile_FromPixelPoint	(	Vec2	pixelPoint,
		Vec2 *	chunkIndex,
		Vec2 *	tileIndex
	)

[Utility] Converts a pixel position to tile and chunk indices

Convert a pixel coordinate to tile and chunk indices.

Takes a world-space pixel coordinate and determines which tile and chunk it belongs to.

Parameters

pixelPoint	The world position in pixels
chunkIndex	Output parameter for the chunk index
tileIndex	Output parameter for the tile index within the chunk

Tile_GetPositionFromPixel()

Vec2 Tile_GetPositionFromPixel

(

Vec2

pixelPoint

)

[Utility] Converts a pixel point to a tile position

Convert a pixel coordinate to a tile position.

Parameters

pixelPoint

The pixel coordinates to convert

Returns

Vec2 The position of the tile that contains the pixel

Tile_GetRandomPixelInRect()

Vec2 Tile_GetRandomPixelInRect

(

SDL_Rect

rect

)

[Utility] Gets a random pixel coordinate within a rectangle

Get a random pixel coordinate within a rectangle.

Parameters

rect	The rectangle to get a random point within

Returns

Vec2 A random pixel position inside the rectangle

Tile_GetRectFromPixel()

SDL_Rect Tile_GetRectFromPixel

(

Vec2

pixelPoint

)

[Utility] Gets the rectangle for a tile from a pixel point

Get the rectangle of a tile from a pixel coordinate.

Parameters

pixelPoint

The pixel coordinates within the tile

Returns

SDL_Rect The rectangle representing the tile

Tile_IsValid()

bool Tile_IsValid

(

Vec2

tileIndex

)

[Utility] Checks if a tile index is valid within a chunk

Check if a tile index is valid.

Parameters

tileIndex

The tile index to check

Returns

bool True if the tile index is valid, false otherwise

Tile_TileIndexToPixel()

Vec2 Tile_TileIndexToPixel	(	Vec2	tileIndex,
		Vec2	chunkIndex
	)

[Utility] Converts tile and chunk indices to a world pixel position

Convert tile and chunk indices to a pixel coordinate.

Parameters

tileIndex	The tile index within the chunk
chunkIndex	The chunk index

Returns

Vec2 The world pixel position