Leonid Pershin
b3415120c3
CI / build-test (push) Failing after 1m4s
TileSet maps ids to texture regions with tints (0 = empty), TileGrid is a bounds-checked dense ushort grid, and the Tilemap component places a grid in the world per render layer. UseTilemaps() inserts TilemapRenderSystem before the flush; it submits only the camera-visible cell range (TilemapMath.VisibleCells), so frame cost scales with the screen, not the grid. Demonstrated in the sample as a checkerboard floor; Tiled loading stays on the roadmap on top of this API.
48 lines
1.6 KiB
C#
48 lines
1.6 KiB
C#
using Friflo.Engine.ECS;
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using Microsoft.Xna.Framework;
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using MrGameEng.Graphics;
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namespace MrGameEng.Tilemaps;
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/// <summary>
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/// Tilemap component: a <see cref="TileGrid"/> of ids drawn with a <see cref="TileSet"/>.
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/// Cell (0,0) sits at <see cref="Origin"/>, cells are <see cref="TileSize"/> world units square.
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/// Only the cells visible through the camera are submitted each frame, so grids can be large.
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/// Create via the constructor — the struct default has no grid and draws nothing.
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/// </summary>
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public struct Tilemap : IComponent
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{
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/// <summary>Tile definitions; ids in the grid index into it.</summary>
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public TileSet? TileSet;
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/// <summary>The cells. Mutating ids takes effect next frame.</summary>
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public TileGrid? Grid;
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/// <summary>World position of the top-left corner of cell (0,0).</summary>
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public Vector2 Origin;
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/// <summary>Cell size in world units.</summary>
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public float TileSize;
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/// <summary>Render layer of the whole map.</summary>
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public LayerId Layer;
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/// <summary>Draw order within the layer (smaller = drawn first / behind).</summary>
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public float Depth;
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/// <summary>Tint multiplied into every tile on top of its <see cref="TileDef.Color"/>.</summary>
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public Color Color;
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/// <summary>Creates a tilemap at world origin.</summary>
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public Tilemap(TileGrid grid, TileSet tileSet, float tileSize, LayerId layer = default)
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{
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Grid = grid;
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TileSet = tileSet;
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TileSize = tileSize;
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Layer = layer;
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Origin = Vector2.Zero;
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Depth = 0f;
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Color = Color.White;
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}
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}
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