Mercurial > games > semicongine
annotate examples/E04_input.nim @ 610:d236692d6d36
add: base code structure for cross-platform sound
| author | Sam <sam@basx.dev> |
|---|---|
| date | Thu, 27 Apr 2023 00:36:45 +0700 |
| parents | 64eb53f81cf6 |
| children | 3f13de7d8ec4 |
| rev | line source |
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| 527 | 1 import std/enumerate |
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2 import std/strutils |
| 525 | 3 import std/typetraits |
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4 import std/times |
| 525 | 5 import std/math |
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6 |
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7 import semicongine |
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8 |
| 525 | 9 const |
| 10 arrow = @[ | |
| 604 | 11 newVec3f(-1, -1), |
| 12 newVec3f(1, -1), | |
| 13 newVec3f(-0.3, -0.3), | |
| 14 newVec3f(-0.3, -0.3), | |
| 15 newVec3f(-1, 1), | |
| 16 newVec3f(-1, -1), | |
| 525 | 17 ] |
| 527 | 18 # keyboard layout, specifying rows with key widths, negative numbers are empty spaces |
| 525 | 19 keyrows = ( |
| 604 | 20 [1.0, -0.6, 1.0, 1.0, 1.0, 1.0, -0.5, 1.0, 1.0, 1.0, 1.0, -0.5, 1.0, 1.0, 1.0, 1.0, -0.1, 1.0, 1.0, 1.0], |
| 21 [1.2, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.8, -0.1, 1.0, 1.0, 1.0], | |
| 22 [1.8, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.5, 1.0, 1.0, 1.0], | |
| 527 | 23 [2.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0], |
| 24 [2.6, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 2.8, -1.3, 1.0], | |
| 25 [1.5, 1.5, 1.5, 6, 1.5, 1.5, -1.2, 1.5, -0.1, 1.0, 1.0, 1.0], | |
| 525 | 26 ) |
| 527 | 27 keyDimension = 50'f32 |
| 525 | 28 keyGap = 10'f32 |
| 604 | 29 backgroundColor = newVec3f(0.6705882352941176, 0.6078431372549019, 0.5882352941176471) |
| 30 baseColor = newVec3f(0.9411764705882353, 0.9058823529411765, 0.8470588235294118'f32) | |
| 31 activeColor = newVec3f(0.6509803921568628'f32, 0.22745098039215686, 0.3137254901960784'f32) | |
| 530 | 32 arrow_colors = @[ |
| 33 baseColor * 0.9'f32, | |
| 34 baseColor * 0.9'f32, | |
| 35 baseColor * 0.9'f32, | |
| 36 baseColor * 0.8'f32, | |
| 37 baseColor * 0.8'f32, | |
| 38 baseColor * 0.8'f32, | |
| 39 ] | |
| 527 | 40 keyIndices = [ |
| 41 Escape, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, PrintScreen, | |
| 42 ScrollLock, Pause, | |
| 43 | |
| 44 NumberRowExtra1, `1`, `2`, `3`, `4`, `5`, `6`, `7`, `8`, `9`, `0`, | |
| 45 | |
| 46 NumberRowExtra2, NumberRowExtra3, Backspace, Insert, Home, PageUp, | |
| 47 Tab, Q, W, Key.E, R, T, Key.Y, U, I, O, P, LetterRow1Extra1, | |
| 48 LetterRow1Extra2, Delete, End, PageDown, | |
| 49 | |
| 50 CapsLock, A, S, D, F, G, H, J, K, L, LetterRow2Extra1, LetterRow2Extra2, | |
| 51 LetterRow2Extra3, Enter, | |
| 52 | |
| 53 ShiftL, Key.Z, Key.X, C, V, B, N, M, LetterRow3Extra1, LetterRow3Extra2, | |
| 54 LetterRow3Extra3, ShiftR, Up, | |
| 55 | |
| 56 CtrlL, SuperL, AltL, Space, AltR, SuperR, CtrlR, Left, Down, Right | |
| 57 ] | |
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58 |
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59 # build keyboard and cursor meshes |
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60 var |
| 604 | 61 scene: Entity |
| 62 keyvertexpos: seq[Vec3f] | |
| 63 keyvertexcolor: seq[Vec3f] | |
| 527 | 64 keymeshindices: seq[array[3, uint16]] |
| 604 | 65 rowpos = newVec2f(0, 0) |
| 525 | 66 i = 0'u16 |
| 527 | 67 firstRow = true |
| 68 rowWidth = 0'f32 | |
| 525 | 69 for row in keyrows.fields: |
| 70 for key in row: | |
| 527 | 71 let keySpace = float32(keyDimension * key) |
| 72 if key > 0: | |
| 73 if keyIndices[i div 4] == Enter: | |
| 604 | 74 keyvertexpos.add newVec3f(rowpos[0], rowpos[1] - keyDimension - keyGap) |
| 75 keyvertexpos.add newVec3f(rowpos[0] + keySpace, rowpos[1] - keyDimension - keyGap) | |
| 527 | 76 else: |
| 604 | 77 keyvertexpos.add newVec3f(rowpos[0], rowpos[1]) |
| 78 keyvertexpos.add newVec3f(rowpos[0] + keySpace, rowpos[1]) | |
| 79 keyvertexpos.add newVec3f(rowpos[0] + keySpace, rowpos[1] + keyDimension) | |
| 80 keyvertexpos.add newVec3f(rowpos[0], rowpos[1] + keyDimension) | |
| 527 | 81 keyvertexcolor.add [baseColor, baseColor, baseColor, baseColor] |
| 82 keymeshindices.add [i, i + 1, i + 2] | |
| 83 keymeshindices.add [i + 2, i + 3, i] | |
| 84 rowpos[0] += keySpace + keyGap | |
| 85 i += 4 | |
| 86 else: | |
| 87 rowpos[0] += -keySpace + keyGap | |
| 88 if firstRow: | |
| 89 rowWidth = rowpos[0] | |
| 525 | 90 rowpos[0] = 0 |
| 527 | 91 rowpos[1] += keyDimension + keyGap * (if firstRow: 2'f32 else: 1'f32) |
| 92 firstRow = false | |
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93 |
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94 |
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95 when isMainModule: |
| 604 | 96 var myengine = initEngine("Input") |
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97 |
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98 # transform the cursor a bit to make it look nice |
| 525 | 99 let cursorscale = ( |
| 100 scale2d(20'f32, 20'f32) * | |
| 101 translate2d(1'f32, 1'f32) * | |
| 102 rotate2d(-float32(PI) / 4'f32) * | |
| 103 scale2d(0.5'f32, 1'f32) * | |
| 104 rotate2d(float32(PI) / 4'f32) | |
| 105 ) | |
| 604 | 106 var positions = arrow |
| 107 for i in 0 ..< positions.len: | |
| 108 positions[i] = cursorscale * newVec3f(positions[i].x, positions[i].y) | |
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109 |
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110 # define mesh objects |
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111 var |
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112 cursormesh = newMesh( |
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113 positions=positions, |
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114 colors=arrow_colors, |
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115 instanceCount=1, |
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116 ) |
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117 keyboardmesh = newMesh( |
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118 positions=keyvertexpos, |
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119 colors=keyvertexcolor, |
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120 indices=keymeshindices |
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121 ) |
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122 backgroundmesh = newMesh( |
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123 positions= @[ |
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124 newVec3f(0'f32, 0'f32), |
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125 newVec3f(1'f32, 0'f32), |
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126 newVec3f(1'f32, 1'f32), |
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127 newVec3f(0'f32, 1'f32), |
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128 ], |
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129 colors= @[ |
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130 backgroundColor, |
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131 backgroundColor, |
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132 backgroundColor, |
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133 backgroundColor, |
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134 ], |
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135 indices= @[[0'u16, 1'u16, 2'u16], [2'u16, 3'u16, 0'u16]], |
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136 ) |
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137 |
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138 # define mesh objects |
| 604 | 139 scene = newEntity("scene") |
| 140 scene.add newEntity("background", backgroundmesh) | |
| 141 let keyboard = newEntity("keyboard", keyboardmesh) | |
| 142 keyboard.transform = translate3d( | |
| 143 -float32(rowWidth) / 2'f32, | |
| 144 -float32(tupleLen(keyRows) * (keyDimension + keyGap) - keyGap) / 2'f32, | |
| 145 0'f32 | |
| 146 ) | |
| 147 scene.add newEntity("keyboard-center", keyboard) | |
| 148 scene.add newEntity("cursor", cursormesh) | |
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149 |
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150 # shaders |
| 604 | 151 const |
| 152 vertexInput = @[ | |
| 153 attr[Vec3f]("position", memoryLocation=VRAM), | |
| 154 attr[Vec3f]("color", memoryLocation=VRAMVisible), | |
| 155 attr[Mat4]("transform", memoryLocation=VRAMVisible, perInstance=true), | |
| 156 ] | |
| 157 vertexOutput = @[attr[Vec3f]("outcolor")] | |
| 158 uniforms = @[attr[Mat4]("projection")] | |
| 159 fragOutput = @[attr[Vec4f]("color")] | |
| 160 vertexCode = compileGlslShader( | |
| 161 stage=VK_SHADER_STAGE_VERTEX_BIT, | |
| 162 inputs=vertexInput, | |
| 163 uniforms=uniforms, | |
| 164 outputs=vertexOutput, | |
| 165 main="""outcolor = color; gl_Position = vec4(position, 1) * (transform * Uniforms.projection);""" | |
| 166 ) | |
| 167 fragmentCode = compileGlslShader( | |
| 168 stage=VK_SHADER_STAGE_FRAGMENT_BIT, | |
| 169 inputs=vertexOutput, | |
| 170 uniforms=uniforms, | |
| 171 outputs=fragOutput, | |
| 172 main="color = vec4(outcolor, 1);" | |
| 173 ) | |
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174 |
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175 # set up rendering |
| 604 | 176 myengine.setRenderer(myengine.gpuDevice.simpleForwardRenderPass(vertexCode, fragmentCode, clearColor=newVec4f(0, 0, 0.5))) |
| 177 myengine.addScene(scene, vertexInput, transformAttribute="transform") | |
| 178 var projection = initShaderGlobal("projection", Unit4f32) | |
| 179 scene.add projection | |
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180 |
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181 # mainloop |
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182 while myengine.updateInputs() == Running: |
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183 if myengine.windowWasResized(): |
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184 setValue[Mat4](projection.value, ortho[float32]( |
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185 0'f32, float32(myengine.getWindow().size[0]), |
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186 0'f32, float32(myengine.getWindow().size[1]), |
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187 0'f32, 1'f32, |
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188 )) |
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189 let |
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190 winsize = myengine.getWindow().size |
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191 center = translate3d(float32(winsize[0]) / 2'f32, float32(winsize[1]) / 2'f32, 0.1'f32) |
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192 scene.firstWithName("keyboard-center").transform = center |
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193 scene.firstWithName("background").transform = scale3d(float32(winsize[0]), float32(winsize[1]), 1'f32) |
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194 |
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195 let mousePos = translate3d(myengine.mousePosition().x + 20, myengine.mousePosition().y + 20, 0'f32) |
| 604 | 196 scene.firstWithName("cursor").transform = mousePos |
| 197 | |
| 198 var mesh = Mesh(scene.firstWithName("keyboard").components[0]) | |
| 199 for (index, key) in enumerate(keyIndices): | |
| 200 if myengine.keyWasPressed(key): | |
| 201 let baseIndex = uint32(index * 4) | |
| 202 mesh.updateMeshData("color", baseIndex + 0, activeColor) | |
| 203 mesh.updateMeshData("color", baseIndex + 1, activeColor) | |
| 204 mesh.updateMeshData("color", baseIndex + 2, activeColor) | |
| 205 mesh.updateMeshData("color", baseIndex + 3, activeColor) | |
| 206 if myengine.keyWasReleased(key): | |
| 207 let baseIndex = uint32(index * 4) | |
| 208 mesh.updateMeshData("color", baseIndex + 0, baseColor) | |
| 209 mesh.updateMeshData("color", baseIndex + 1, baseColor) | |
| 210 mesh.updateMeshData("color", baseIndex + 2, baseColor) | |
| 211 mesh.updateMeshData("color", baseIndex + 3, baseColor) | |
| 212 | |
| 213 myengine.renderScene(scene) | |
| 214 | |
| 215 myengine.destroy() |