mirror of
https://github.com/ClassiCube/ClassiCube.git
synced 2025-09-24 05:10:42 -04:00
270 lines
14 KiB
C#
270 lines
14 KiB
C#
using System;
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using System.Runtime.InteropServices;
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using ClassicalSharp.GraphicsAPI;
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using ClassicalSharp.Renderers;
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using OpenTK;
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namespace ClassicalSharp.Model {
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/// <summary> Contains a set of quads and/or boxes that describe a 3D object as well as
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/// the bounding boxes that contain the entire set of quads and/or boxes. </summary>
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public abstract class IModel : IDisposable {
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protected Game game;
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protected ModelCache cache;
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protected IGraphicsApi graphics;
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protected const int quadVertices = 4;
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protected const int boxVertices = 6 * quadVertices;
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protected RotateOrder Rotate = RotateOrder.ZYX;
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public IModel( Game game ) {
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this.game = game;
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graphics = game.Graphics;
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cache = game.ModelCache;
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}
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/// <summary> Whether the entity should be slightly bobbed up and down when rendering. </summary>
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/// <remarks> e.g. for players when their legs are at the peak of their swing,
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/// the whole model will be moved slightly down. </remarks>
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public abstract bool Bobbing { get; }
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/// <summary> Vertical offset from the model's feet/base that the name texture should be drawn at. </summary>
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public abstract float NameYOffset { get; }
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/// <summary> Vertical offset from the model's feet/base that the model's eye is located. </summary>
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public abstract float GetEyeY( Player player );
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/// <summary> The size of the bounding box that is used when
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/// performing collision detection for this model. </summary>
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public abstract Vector3 CollisionSize { get; }
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/// <summary> Bounding box that contains this model,
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/// assuming that the model is not rotated at all.</summary>
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public abstract BoundingBox PickingBounds { get; }
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protected Vector3 pos;
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protected float cosA, sinA;
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/// <summary> Renders the model based on the given entity's position and orientation. </summary>
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public void RenderModel( Player p ) {
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index = 0;
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pos = p.Position;
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if( Bobbing )
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pos.Y += p.bobYOffset;
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Map map = game.Map;
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col = game.Map.IsLit( Vector3I.Floor( p.EyePosition ) ) ? map.Sunlight : map.Shadowlight;
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graphics.SetBatchFormat( VertexFormat.Pos3fTex2fCol4b );
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DrawPlayerModel( p );
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}
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protected abstract void DrawPlayerModel( Player p );
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public virtual void Dispose() {
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}
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protected FastColour col;
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protected ModelVertex[] vertices;
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protected int index;
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public struct BoxDescription {
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public int TexX, TexY, SidesW, BodyW, BodyH;
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public float X1, X2, Y1, Y2, Z1, Z2;
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public BoxDescription SetTexOrigin( int x, int y ) {
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TexX = x; TexY = y; return this;
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}
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public BoxDescription SetModelBounds( float x1, float y1, float z1, float x2, float y2, float z2 ) {
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X1 = x1 / 16f; X2 = x2 / 16f;
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Y1 = y1 / 16f; Y2 = y2 / 16f;
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Z1 = z1 / 16f; Z2 = z2 / 16f;
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return this;
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}
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}
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protected BoxDescription MakeBoxBounds( int x1, int y1, int z1, int x2, int y2, int z2 ) {
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BoxDescription desc = default( BoxDescription )
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.SetModelBounds( x1, y1, z1, x2, y2, z2 );
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desc.SidesW = Math.Abs( z2 - z1 );
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desc.BodyW = Math.Abs( x2 - x1 );
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desc.BodyH = Math.Abs( y2 - y1 );
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return desc;
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}
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protected BoxDescription MakeRotatedBoxBounds( int x1, int y1, int z1, int x2, int y2, int z2 ) {
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BoxDescription desc = default( BoxDescription )
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.SetModelBounds( x1, y1, z1, x2, y2, z2 );
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desc.SidesW = Math.Abs( y2 - y1 );
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desc.BodyW = Math.Abs( x2 - x1 );
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desc.BodyH = Math.Abs( z2 - z1 );
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return desc;
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}
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/// <summary>Builds a box model assuming the follow texture layout:<br/>
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/// let SW = sides width, BW = body width, BH = body height<br/>
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/// ┏━━━━━━━━━━━━┳━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━┳━━━━━━━━━━━━┓ <br/>
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/// ┃┈┈┈┈┈SW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┈┃┈┈┈┈┈┈┈┈┈┈┈┈┃ <br/>
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/// ┃S┈┈┈┈┈┈┈┈┈┈┈S┃S┈┈┈┈top┈┈┈┈S┃S┈┈bottom┈┈┈S┃┈┈┈┈┈┈┈┈┈┈┈┈┃ <br/>
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/// ┃W┈┈┈┈┈┈┈┈┈W┃W┈┈┈┈tex┈┈┈W┃W┈┈┈┈tex┈┈┈┈W┃┈┈┈┈┈┈┈┈┈┈┈┈┃ <br/>
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/// ┃┈┈┈┈┈SW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┈┃┈┈┈┈┈┈┈┈┈┈┈┈┃ <br/>
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/// ┣━━━━━━━━━━━━━╋━━━━━━━━━━━━━╋━━━━━━━━━━━━━━╋━━━━━━━━━━━━┃ <br/>
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/// ┃┈┈┈┈┈SW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┈┃┈┈┈┈┈SW┈┈┈┈┃ <br/>
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/// ┃B┈┈┈left┈┈┈┈┈B┃B┈┈front┈┈┈┈B┃B┈┈┈right┈┈┈┈B┃B┈┈┈back┈┈┈B┃ <br/>
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/// ┃H┈┈┈tex┈┈┈┈┈H┃H┈┈tex┈┈┈┈┈H┃H┈┈┈tex┈┈┈┈┈H┃H┈┈┈┈tex┈┈┈H┃ <br/>
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/// ┃┈┈┈┈┈SW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┈┃┈┈┈┈┈SW┈┈┈┈┃ <br/>
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/// ┗━━━━━━━━━━━━━┻━━━━━━━━━━━━━┻━━━━━━━━━━━━━┻━━━━━━━━━━━━━┛ </summary>
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protected ModelPart BuildBox( BoxDescription desc ) {
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int sidesW = desc.SidesW, bodyW = desc.BodyW, bodyH = desc.BodyH;
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float x1 = desc.X1, y1 = desc.Y1, z1 = desc.Z1;
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float x2 = desc.X2, y2 = desc.Y2, z2 = desc.Z2;
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int x = desc.TexX, y = desc.TexY;
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YQuad( x + sidesW, y, bodyW, sidesW, x2, x1, z2, z1, y2 ); // top
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YQuad( x + sidesW + bodyW, y, bodyW, sidesW, x2, x1, z1, z2, y1 ); // bottom
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ZQuad( x + sidesW, y + sidesW, bodyW, bodyH, x2, x1, y1, y2, z1 ); // front
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ZQuad( x + sidesW + bodyW + sidesW, y + sidesW, bodyW, bodyH, x1, x2, y1, y2, z2 ); // back
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XQuad( x, y + sidesW, sidesW, bodyH, z2, z1, y1, y2, x2 ); // left
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XQuad( x + sidesW + bodyW, y + sidesW, sidesW, bodyH, z1, z2, y1, y2, x1 ); // right
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return new ModelPart( index - 6 * 4, 6 * 4 );
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}
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/// <summary>Builds a box model assuming the follow texture layout:<br/>
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/// let SW = sides width, BW = body width, BH = body height<br/>
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/// ┏━━━━━━━━━━━━┳━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━┳━━━━━━━━━━━━┓ <br/>
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/// ┃┈┈┈┈┈SW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┈┃┈┈┈┈┈┈┈┈┈┈┈┈┃ <br/>
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/// ┃S┈┈┈┈┈┈┈┈┈┈┈S┃S┈┈┈┈front┈┈┈S┃S┈┈┈back┈┈┈┈S┃┈┈┈┈┈┈┈┈┈┈┈┈┃ <br/>
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/// ┃W┈┈┈┈┈┈┈┈┈W┃W┈┈┈┈tex┈┈┈W┃W┈┈┈┈tex┈┈┈┈W┃┈┈┈┈┈┈┈┈┈┈┈┈┃ <br/>
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/// ┃┈┈┈┈┈SW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┈┃┈┈┈┈┈┈┈┈┈┈┈┈┃ <br/>
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/// ┣━━━━━━━━━━━━━╋━━━━━━━━━━━━━╋━━━━━━━━━━━━━━╋━━━━━━━━━━━━┃ <br/>
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/// ┃┈┈┈┈┈SW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┃┈┈┈┈┈SW┈┈┈┈┈┈┃┈┈┈┈┈SW┈┈┈┈┃ <br/>
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/// ┃B┈┈┈left┈┈┈┈┈B┃B┈┈bottom┈┈B┃B┈┈┈right┈┈┈┈B┃B┈┈┈┈top┈┈┈B┃ <br/>
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/// ┃H┈┈┈tex┈┈┈┈┈H┃H┈┈tex┈┈┈┈┈H┃H┈┈┈tex┈┈┈┈┈H┃H┈┈┈┈tex┈┈┈H┃ <br/>
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/// ┃┈┈┈┈┈SW┈┈┈┈┈┃┈┈┈┈┈BW┈┈┈┈┈┃┈┈┈┈┈SW┈┈┈┈┈┈┃┈┈┈┈┈SW┈┈┈┈┃ <br/>
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/// ┗━━━━━━━━━━━━━┻━━━━━━━━━━━━━┻━━━━━━━━━━━━━┻━━━━━━━━━━━━━┛ </summary>
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protected ModelPart BuildRotatedBox( BoxDescription desc ) {
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int sidesW = desc.SidesW, bodyW = desc.BodyW, bodyH = desc.BodyH;
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float x1 = desc.X1, y1 = desc.Y1, z1 = desc.Z1;
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float x2 = desc.X2, y2 = desc.Y2, z2 = desc.Z2;
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int x = desc.TexX, y = desc.TexY;
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YQuad( x + sidesW + bodyW + sidesW, y + sidesW, bodyW, bodyH, x1, x2, z1, z2, y2 ); // top
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YQuad( x + sidesW, y + sidesW, bodyW, bodyH, x2, x1, z1, z2, y1 ); // bottom
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ZQuad( x + sidesW, y, bodyW, sidesW, x2, x1, y1, y2, z1 ); // front
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ZQuad( x + sidesW + bodyW, y, bodyW, sidesW, x1, x2, y2, y1, z2 ); // back
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XQuad( x, y + sidesW, sidesW, bodyH, y2, y1, z2, z1, x2 ); // left
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XQuad( x + sidesW + bodyW, y + sidesW, sidesW, bodyH, y1, y2, z2, z1, x1 ); // right
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// rotate left and right 90 degrees
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for( int i = index - 8; i < index; i++ ) {
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ModelVertex vertex = vertices[i];
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float z = vertex.Z; vertex.Z = vertex.Y; vertex.Y = z;
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vertices[i] = vertex;
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}
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return new ModelPart( index - 6 * 4, 6 * 4 );
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}
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protected void XQuad( int texX, int texY, int texWidth, int texHeight,
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float z1, float z2, float y1, float y2, float x ) {
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vertices[index++] = new ModelVertex( x, y1, z1, texX, texY + texHeight );
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vertices[index++] = new ModelVertex( x, y2, z1, texX, texY );
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vertices[index++] = new ModelVertex( x, y2, z2, texX + texWidth, texY );
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vertices[index++] = new ModelVertex( x, y1, z2, texX + texWidth, texY + texHeight );
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}
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protected void YQuad( int texX, int texY, int texWidth, int texHeight,
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float x1, float x2, float z1, float z2, float y ) {
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vertices[index++] = new ModelVertex( x1, y, z2, texX, texY + texHeight );
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vertices[index++] = new ModelVertex( x1, y, z1, texX, texY );
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vertices[index++] = new ModelVertex( x2, y, z1, texX + texWidth, texY );
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vertices[index++] = new ModelVertex( x2, y, z2, texX + texWidth, texY + texHeight );
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}
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protected void ZQuad( int texX, int texY, int texWidth, int texHeight,
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float x1, float x2, float y1, float y2, float z ) {
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vertices[index++] = new ModelVertex( x1, y1, z, texX, texY + texHeight );
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vertices[index++] = new ModelVertex( x1, y2, z, texX, texY );
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vertices[index++] = new ModelVertex( x2, y2, z, texX + texWidth, texY );
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vertices[index++] = new ModelVertex( x2, y1, z, texX + texWidth, texY + texHeight );
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}
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protected bool _64x64 = false;
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protected void DrawPart( ModelPart part ) {
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float vScale = _64x64 ? 64f : 32f;
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for( int i = 0; i < part.Count; i++ ) {
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ModelVertex model = vertices[part.Offset + i];
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Vector3 newPos = Utils.RotateY( model.X, model.Y, model.Z, cosA, sinA ) + pos;
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FastColour col = GetCol( i, part.Count );
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VertexPos3fTex2fCol4b vertex = default( VertexPos3fTex2fCol4b );
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vertex.X = newPos.X; vertex.Y = newPos.Y; vertex.Z = newPos.Z;
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vertex.R = col.R; vertex.G = col.G; vertex.B = col.B; vertex.A = 255;
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AdjustUV( model.U, model.V, vScale, i, ref vertex );
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cache.vertices[index++] = vertex;
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}
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}
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protected void DrawRotate( float x, float y, float z, float angleX, float angleY, float angleZ, ModelPart part ) {
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float cosX = (float)Math.Cos( -angleX ), sinX = (float)Math.Sin( -angleX );
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float cosY = (float)Math.Cos( -angleY ), sinY = (float)Math.Sin( -angleY );
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float cosZ = (float)Math.Cos( -angleZ ), sinZ = (float)Math.Sin( -angleZ );
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float vScale = _64x64 ? 64f : 32f;
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for( int i = 0; i < part.Count; i++ ) {
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ModelVertex model = vertices[part.Offset + i];
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Vector3 loc = new Vector3( model.X - x, model.Y - y, model.Z - z );
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if( Rotate == RotateOrder.ZYX ) {
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loc = Utils.RotateZ( loc.X, loc.Y, loc.Z, cosZ, sinZ );
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loc = Utils.RotateY( loc.X, loc.Y, loc.Z, cosY, sinY );
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loc = Utils.RotateX( loc.X, loc.Y, loc.Z, cosX, sinX );
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} else if( Rotate == RotateOrder.XZY ) {
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loc = Utils.RotateX( loc.X, loc.Y, loc.Z, cosX, sinX );
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loc = Utils.RotateZ( loc.X, loc.Y, loc.Z, cosZ, sinZ );
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loc = Utils.RotateY( loc.X, loc.Y, loc.Z, cosY, sinY );
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}
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FastColour col = GetCol( i, part.Count );
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VertexPos3fTex2fCol4b vertex = default( VertexPos3fTex2fCol4b );
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Vector3 newPos = Utils.RotateY( loc.X + x, loc.Y + y, loc.Z + z, cosA, sinA ) + pos;
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vertex.X = newPos.X; vertex.Y = newPos.Y; vertex.Z = newPos.Z;
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vertex.R = col.R; vertex.G = col.G; vertex.B = col.B; vertex.A = 255;
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AdjustUV( model.U, model.V, vScale, i, ref vertex );
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cache.vertices[index++] = vertex;
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}
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}
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FastColour GetCol( int i, int count ) {
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if( count != boxVertices )
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return FastColour.Scale( col, 0.7f );
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if( i >= 4 && i < 8 )
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return FastColour.Scale( col, FastColour.ShadeYBottom );
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if( i >= 8 && i < 16 )
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return FastColour.Scale( col, FastColour.ShadeZ );
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if( i >= 16 && i < 24 )
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return FastColour.Scale( col, FastColour.ShadeX );
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return col;
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}
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void AdjustUV( ushort u, ushort v, float vScale, int i, ref VertexPos3fTex2fCol4b vertex ) {
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vertex.U = u / 64f; vertex.V = v / vScale;
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int quadIndex = i % 4;
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if( quadIndex == 0 || quadIndex == 3 )
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vertex.V -= 0.01f / vScale;
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if( quadIndex == 2 || quadIndex == 3 )
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vertex.U -= 0.01f / 64f;
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}
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[StructLayout( LayoutKind.Sequential, Pack = 1 )]
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protected struct ModelVertex {
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public float X, Y, Z;
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public ushort U, V;
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public ModelVertex( float x, float y, float z, int u, int v ) {
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X = x; Y = y; Z = z;
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U = (ushort)u; V = (ushort)v;
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}
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}
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protected enum RotateOrder { ZYX, XZY }
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}
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} |