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78 lines
2.3 KiB
C#
78 lines
2.3 KiB
C#
// ClassicalSharp copyright 2014-2016 UnknownShadow200 | Licensed under MIT
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using System;
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using OpenTK;
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#if false
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namespace ClassicalSharp.Entities {
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/// <summary> Entity component that performs collision detection. </summary>
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public sealed class NewCollisionsComponent {
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Game game;
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Entity entity;
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BlockInfo info;
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static AABB bb;
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static RayTracer tracerP1Y1 = new RayTracer();
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static RayTracer tracerP2Y1 = new RayTracer();
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static RayTracer tracerP1Y2 = new RayTracer();
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static RayTracer tracerP2Y2 = new RayTracer();
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public NewCollisionsComponent(Game game, Entity entity) {
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this.game = game;
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this.entity = entity;
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info = game.BlockInfo;
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}
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internal unsafe void MoveAndWallSlide() {
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if (entity.Velocity == Vector3.Zero) return;
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int* minY = stackalloc int[4096];
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int* maxY = stackalloc int[4096];
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int* minX = stackalloc int[4096];
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int* maxX = stackalloc int[4096];
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for (int i = 0; i < 4096; i++) {
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minX[i] = int.MaxValue; minY[i] = int.MaxValue;
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maxX[i] = int.MinValue; maxY[i] = int.MinValue;
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}
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bb = entity.Bounds;
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int count = 0;
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// First raytrace out from the origin to find approximate blocks
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CalcRayDirection();
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while (true) {
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UpdateCoords(tracerP1Y1, minX, maxX, minY, maxY);
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UpdateCoords(tracerP1Y2, minX, maxX, minY, maxY);
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UpdateCoords(tracerP2Y1, minX, maxX, minY, maxY);
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UpdateCoords(tracerP2Y2, minX, maxX, minY, maxY);
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}
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// Now precisely which blocks we really intersect with
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// .. then perform collision
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}
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void UpdateCoords(RayTracer tracer, int* minX, int* maxX,
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int* minY, int* maxY, ref int count) {
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tracer.Step();
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minX[tracer.Z] = Math.Min(tracer.X, minX[tracer.Z]);
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minY[tracer.Z] = Math.Min(tracer.Y, minY[tracer.Z]);
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maxX[tracer.Z] = Math.Max(tracer.X, maxX[tracer.Z]);
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maxY[tracer.Z] = Math.Max(tracer.Y, maxY[tracer.Z]);
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count = Math.Max(count, tracer.Z);
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}
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void CalcRayDirection() {
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Vector3 dir = entity.Velocity;
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Vector3 P = new Vector3(bb.Min.X, bb.Min.Y, bb.Max.Z);
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tracerP1Y1.SetVectors(P, dir);
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P.Y = bb.Max.Y;
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tracerP1Y1.SetVectors(P, dir);
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P = new Vector3(bb.Max.X, bb.Min.Y, bb.Min.Z);
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tracerP2Y1.SetVectors(P, dir);
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P.Y = bb.Max.Y;
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tracerP2Y2.SetVectors(P, dir);
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}
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}
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}
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#endif |