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apparently I deleted this file when rebasing?

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UnknownShadow200 2018-03-22 16:24:01 +11:00
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commit dc813c9209
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ClassicalSharp/Blocks/BlockInfo.BoundsBox.cs Normal file
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// Copyright 2014-2017 ClassicalSharp | Licensed under BSD-3
using System;
using OpenTK;
using ClassicalSharp;
#if USE16_BIT
using BlockID = System.UInt16;
#else
using BlockID = System.Byte;
#endif
namespace ClassicalSharp {
/// <summary> Stores various properties about the blocks in Minecraft Classic. </summary>
public static partial class BlockInfo {
public static Vector3[] MinBB = new Vector3[Block.Count];
public static Vector3[] MaxBB = new Vector3[Block.Count];
public static Vector3[] RenderMinBB = new Vector3[Block.Count];
public static Vector3[] RenderMaxBB = new Vector3[Block.Count];
internal static void CalcRenderBounds(BlockID block) {
Vector3 min = MinBB[block], max = MaxBB[block];
if (IsLiquid[block]) {
min.X -= 0.1f/16f; max.X -= 0.1f/16f;
min.Z -= 0.1f/16f; max.Z -= 0.1f/16f;
min.Y -= 1.5f/16f; max.Y -= 1.5f/16f;
} else if (Draw[block] == DrawType.Translucent && Collide[block] != CollideType.Solid) {
min.X += 0.1f/16f; max.X += 0.1f/16f;
min.Z += 0.1f/16f; max.Z += 0.1f/16f;
min.Y -= 0.1f/16f; max.Y -= 0.1f/16f;
}
RenderMinBB[block] = min; RenderMaxBB[block] = max;
}
internal static byte CalcLightOffset(BlockID block) {
int flags = 0xFF;
Vector3 min = MinBB[block], max = MaxBB[block];
if (min.X != 0) flags &= ~(1 << Side.Left);
if (max.X != 1) flags &= ~(1 << Side.Right);
if (min.Z != 0) flags &= ~(1 << Side.Front);
if (max.Z != 1) flags &= ~(1 << Side.Back);
if ((min.Y != 0 && max.Y == 1) && Draw[block] != DrawType.Gas) {
flags &= ~(1 << Side.Top);
flags &= ~(1 << Side.Bottom);
}
return (byte)flags;
}
internal static void RecalculateSpriteBB() {
using (FastBitmap fastBmp = new FastBitmap(TerrainAtlas2D.Atlas, true, true)) {
for (int i = 0; i < Block.Count; i++) {
if (Draw[i] != DrawType.Sprite) continue;
RecalculateBB((BlockID)i, fastBmp);
}
}
}
const float angle = 45f * Utils.Deg2Rad;
static readonly Vector3 centre = new Vector3(0.5f, 0, 0.5f);
internal static void RecalculateBB(BlockID block, FastBitmap fastBmp) {
int elemSize = fastBmp.Width / 16;
int texId = GetTextureLoc(block, Side.Right);
int texX = texId & 0x0F, texY = texId >> 4;
float topY = GetSpriteBB_TopY(elemSize, texX, texY, fastBmp);
float bottomY = GetSpriteBB_BottomY(elemSize, texX, texY, fastBmp);
float leftX = GetSpriteBB_LeftX(elemSize, texX, texY, fastBmp);
float rightX = GetSpriteBB_RightX(elemSize, texX, texY, fastBmp);
MinBB[block] = Utils.RotateY(leftX - 0.5f, bottomY, 0, angle) + centre;
MaxBB[block] = Utils.RotateY(rightX - 0.5f, topY, 0, angle) + centre;
CalcRenderBounds(block);
}
unsafe static float GetSpriteBB_TopY(int size, int tileX, int tileY, FastBitmap fastBmp) {
for (int y = 0; y < size; y++) {
int* row = fastBmp.GetRowPtr(tileY * size + y) + (tileX * size);
for (int x = 0; x < size; x++) {
if ((byte)(row[x] >> 24) != 0)
return 1 - (float)y / size;
}
}
return 0;
}
unsafe static float GetSpriteBB_BottomY(int size, int tileX, int tileY, FastBitmap fastBmp) {
for (int y = size - 1; y >= 0; y--) {
int* row = fastBmp.GetRowPtr(tileY * size + y) + (tileX * size);
for (int x = 0; x < size; x++) {
if ((byte)(row[x] >> 24) != 0)
return 1 - (float)(y + 1) / size;
}
}
return 1;
}
unsafe static float GetSpriteBB_LeftX(int size, int tileX, int tileY, FastBitmap fastBmp) {
for (int x = 0; x < size; x++) {
for (int y = 0; y < size; y++) {
int* row = fastBmp.GetRowPtr(tileY * size + y) + (tileX * size);
if ((byte)(row[x] >> 24) != 0)
return (float)x / size;
}
}
return 1;
}
unsafe static float GetSpriteBB_RightX(int size, int tileX, int tileY, FastBitmap fastBmp) {
for (int x = size - 1; x >= 0; x--) {
for (int y = 0; y < size; y++) {
int* row = fastBmp.GetRowPtr(tileY * size + y) + (tileX * size);
if ((byte)(row[x] >> 24) != 0)
return (float)(x + 1) / size;
}
}
return 0;
}
}
}