LayaBox写的飞机大战小例子

package laya.d3.core { import laya.d3.graphics.IndexBuffer3D; import laya.d3.graphics.VertexBuffer3D; import laya.d3.graphics.VertexDeclaration; import laya.d3.graphics.VertexElement; import laya.d3.graphics.VertexElementFormat; import laya.d3.graphics.VertexElementUsage; import laya.d3.math.Vector3; import laya.d3.math.Vector4; import laya.d3.shader.Shader3D; import laya.d3.shader.ShaderCompile3D; import laya.d3.shader.ValusArray; import laya.utils.Stat; import laya.webgl.WebGL; import laya.webgl.WebGLContext; /** * @private * <code>PhasorSpriter3D</code> 类用于创建矢量笔刷。 */ public class PhasorSpriter3D { /**混合状态_不透明*/ public static const BLENDSTATE_OPAQUE:int = 0; /**混合状态_加色法*/ public static const BLENDSTATE_ADDITIVE:int = 1; /**混合状态_透明混合*/ public static const BLENDSTATE_ALPHABLEND:int = 2; /**深度状态_默认*/ public static const DEPTHSTATE_DEFAULT:int = 0; /**深度状态_只读*/ public static const DEPTHSTATE_ONLYREAD:int = 1; /**深度状态_无*/ public static const DEPTHSTATE_NONE:int = 2; private static const _vertexDeclaration:VertexDeclaration = new VertexDeclaration(28, [new VertexElement(0, VertexElementFormat.Vector3, VertexElementUsage.POSITION0), new VertexElement(12, VertexElementFormat.Vector4, VertexElementUsage.COLOR0)]); private var _tempInt0:int; private var _tempInt1:int; private var _tempUint0:uint; private var _tempUint1:uint; private var _tempUint2:uint; private var _tempUint3:uint; private var _tempUint4:uint; private var _tempUint5:uint; private var _tempUint6:uint; private var _tempUint7:uint; private var _tempNumver0:Number; private var _tempNumver1:Number; private var _tempNumver2:Number; private var _tempNumver3:Number; private const _floatSizePerVer:int = 7;//顶点结构为Position(3个float)+Color(4个float) private const _defaultBufferSize:int = 600 * _floatSizePerVer; private var _vbData:Float32Array = new Float32Array(_defaultBufferSize); private var _vb:VertexBuffer3D; private var _posInVBData:uint; private var _ibData:Uint16Array = new Uint16Array(_defaultBufferSize); private var _ib:IndexBuffer3D; private var _posInIBData:uint; private var _primitiveType:Number; private var _blendState:Number; private var _depthState:Number; private var _hasBegun:Boolean; private var _numVertsPerPrimitive:uint; private var _camera:BaseCamera; private var _sharderNameID:int; private var _shader:Shader3D; /** @private */ protected var _shaderCompile:ShaderCompile3D; /** @private */ private var _spriteShaderValue:ValusArray = new ValusArray(); public function PhasorSpriter3D() { super(); _vb = VertexBuffer3D.create(_vertexDeclaration, _defaultBufferSize / _floatSizePerVer, WebGLContext.DYNAMIC_DRAW); _ib = IndexBuffer3D.create(IndexBuffer3D.INDEXTYPE_USHORT, _defaultBufferSize, WebGLContext.DYNAMIC_DRAW); _sharderNameID = Shader3D.nameKey.getID("LINE"); _shaderCompile = ShaderCompile3D._preCompileShader[_sharderNameID]; } public function line(startPosition:Vector3, startColor:Vector4, endPosition:Vector3, endColor:Vector4):PhasorSpriter3D { if (!_hasBegun || _primitiveType !== WebGLContext.LINES) drawLinesException(); if (_posInVBData + 2 * _floatSizePerVer > _vbData.length || _posInIBData + 2 > _ibData.length) _flush(); _tempUint0 = _posInVBData / _floatSizePerVer;//_tempUint0为curVBPosVertex addVertex(startPosition.x, startPosition.y, startPosition.z, startColor.x, startColor.y, startColor.z, startColor.w); // start addVertex(endPosition.x, endPosition.y, endPosition.z, endColor.x, endColor.y, endColor.z, endColor.w); // end addIndexes(_tempUint0, _tempUint0 + 1); return this; } public function circle(radius:Number, numberOfPoints:uint, r:Number, g:Number, b:Number, a:Number):PhasorSpriter3D { if (!_hasBegun || (_primitiveType !== WebGLContext.LINES)) drawLinesException(); _tempUint0 = numberOfPoints * 2;//_tempUint0为总顶点数 if (_posInVBData + _tempUint0 * _floatSizePerVer > _vbData.length || _posInIBData + 2 * _tempUint0 > _ibData.length) _flush(); _tempUint1 = _posInVBData / _floatSizePerVer;//_tempUint1为curVBPosVertex for (_tempNumver0 = 0, _tempInt0 = 0; _tempNumver0 < 3.1416 * 2; _tempNumver0 = _tempNumver0 + (3.1416 / numberOfPoints), _tempInt0++) { addVertex(Math.sin(_tempNumver0) * radius, Math.cos(_tempNumver0) * radius, 0, r, g, b, a); if (_tempInt0 === 0) { addIndexes(_tempUint1); } else if (_tempInt0 === _tempUint0 - 1) { _tempUint2 = _tempUint1 + _tempInt0;//_tempUit2为当前索引数 addIndexes(_tempUint2, _tempUint2, _tempUint1); } else { _tempUint2 = _tempUint1 + _tempInt0; //_tempUint2为当前索引数 addIndexes(_tempUint2, _tempUint2); } } return this; } public function plane(positionX:Number, positionY:Number, positionZ:Number, width:Number, height:Number, r:Number, g:Number, b:Number, a:Number):PhasorSpriter3D { if (!_hasBegun || _primitiveType !== WebGLContext.TRIANGLES) drawTrianglesException(); if (_posInVBData + 4 * _floatSizePerVer > _vbData.length || _posInIBData + 6 > _ibData.length) _flush(); _tempNumver0 = width / 2;//tempNumver0为halfWidth _tempNumver1 = height / 2;//tempNumver1为halfHeight _tempUint0 = _posInVBData / _floatSizePerVer;//_tempUint0为curVBPosVertex addVertex(positionX - _tempNumver0, positionY + _tempNumver1, positionZ, r, g, b, a); // LeftUp addVertex(positionX + _tempNumver0, positionY + _tempNumver1, positionZ, r, g, b, a); // RightUp addVertex(positionX - _tempNumver0, positionY - _tempNumver1, positionZ, r, g, b, a); // LeftBottom addVertex(positionX + _tempNumver0, positionY - _tempNumver1, positionZ, r, g, b, a); // RightBottom _tempUint1 = _tempUint0 + 1;//_tempUint0为curVBPosVertex1 _tempUint2 = _tempUint0 + 2;//_tempUint1为curVBPosVertex2 addIndexes(_tempUint0, _tempUint1, _tempUint2, _tempUint2, _tempUint1, _tempUint0 + 3); return this; } public function box(positionX:Number, positionY:Number, positionZ:Number, width:Number, height:Number, depth:Number, r:Number, g:Number, b:Number, a:Number):PhasorSpriter3D { if (!_hasBegun || _primitiveType !== WebGLContext.TRIANGLES) drawTrianglesException(); if (_posInVBData + 8 * _floatSizePerVer > _vbData.length || _posInIBData + 36 > _ibData.length) _flush(); _tempNumver0 = width / 2;//tempNumver0为halfWidth _tempNumver1 = height / 2;//tempNumver1为halfHeight _tempNumver2 = depth / 2;//tempNumver2为halfDepth _tempUint0 = _posInVBData / _floatSizePerVer;//_tempUint0为curVBPosVertex //frontVertex addVertex(positionX - _tempNumver0, positionY + _tempNumver1, positionZ + _tempNumver2, r, g, b, a); // V0 addVertex(positionX + _tempNumver0, positionY + _tempNumver1, positionZ + _tempNumver2, r, g, b, a); // V1 addVertex(positionX - _tempNumver0, positionY - _tempNumver1, positionZ + _tempNumver2, r, g, b, a); // V2 addVertex(positionX + _tempNumver0, positionY - _tempNumver1, positionZ + _tempNumver2, r, g, b, a); // V3 //backVertex addVertex(positionX + _tempNumver0, positionY + _tempNumver1, positionZ - _tempNumver2, r, g, b, a); // V4 addVertex(positionX - _tempNumver0, positionY + _tempNumver1, positionZ - _tempNumver2, r, g, b, a); // V5 addVertex(positionX + _tempNumver0, positionY - _tempNumver1, positionZ - _tempNumver2, r, g, b, a); // V6 addVertex(positionX - _tempNumver0, positionY - _tempNumver1, positionZ - _tempNumver2, r, g, b, a); // V7 // v5----- v4 // /| /| // v0----- v1