Mercurial > games > semicongine

annotate examples/E10_pong.nim @ 1195:cfba2b7e00d0 compiletime-tests

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did: most of swapchain, swap still needs to be done
author sam <sam@basx.dev>
date Mon, 08 Jul 2024 23:47:33 +0700
parents 5934c5615f13
children
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diff changeset
1 import std/times
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2 import std/tables
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3
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4 import ../semicongine
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5
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6 let
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7 barcolor = ToRGBA("5A3F00").ToSRGB().ColorToHex()
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8 barSize = 0.1'f
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9 barWidth = 0.01'f
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10 ballcolor = ToRGBA("B17F08").ToSRGB().ColorToHex()
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11 ballSize = 0.01'f
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12 ballSpeed = 60'f
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13 matDef = MaterialType(name: "default", vertexAttributes: {
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14 "position": Vec3F32,
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15 "color": Vec4F32,
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16 }.toTable)
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17
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18 var
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19 level: Scene
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20 ballVelocity = NewVec2f(1, 1).Normalized * ballSpeed
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21
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22 when isMainModule:
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23 var myengine = InitEngine("Pong")
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24
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25 var player = Rect(color = barcolor, width = barWidth, height = barSize)
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26 player.material = matDef.InitMaterialData(name = "player material")
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27 var ball = Circle(color = ballcolor)
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28 ball.material = matDef.InitMaterialData(name = "player material")
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29 level = Scene(name: "scene", meshes: @[ball, player])
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31 const
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32 shaderConfiguration = CreateShaderConfiguration(
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33 name = "default shader",
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34 inputs = [
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35 Attr[Vec3f]("position"),
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36 Attr[Vec4f]("color", memoryPerformanceHint = PreferFastWrite),
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37 Attr[Mat4]("transform", memoryPerformanceHint = PreferFastWrite, perInstance = true),
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38 ],
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39 intermediates = [Attr[Vec4f]("outcolor")],
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40 uniforms = [Attr[Mat4]("projection")],
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41 outputs = [Attr[Vec4f]("color")],
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42 vertexCode = """outcolor = color; gl_Position = vec4(position, 1) * (transform * Uniforms.projection);""",
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43 fragmentCode = "color = outcolor;",
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44 )
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45
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46 # set up rendering
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47 myengine.InitRenderer({matDef: shaderConfiguration})
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48 level.AddShaderGlobal("projection", Unit4f32)
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49 myengine.LoadScene(level)
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50
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51 var
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52 winsize = myengine.GetWindow().Size
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53 height = float32(winsize[1]) / float32(winsize[0])
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54 width = 1'f
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55 currentTime = cpuTime()
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56 showSystemCursor = true
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57 fullscreen = false
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58 while myengine.UpdateInputs() and not KeyIsDown(Escape):
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59 if KeyWasPressed(C):
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60 if showSystemCursor:
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61 myengine.HideSystemCursor()
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62 else:
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63 myengine.ShowSystemCursor()
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64 showSystemCursor = not showSystemCursor
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65 if KeyWasPressed(F):
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66 fullscreen = not fullscreen
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67 myengine.Fullscreen = fullscreen
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68
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69 let dt: float32 = cpuTime() - currentTime
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70 currentTime = cpuTime()
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71 if WindowWasResized():
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72 winsize = myengine.GetWindow().Size
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73 height = float32(winsize[1]) / float32(winsize[0])
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74 width = 1'f
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75 SetShaderGlobal(level, "projection", Ortho(0, width, 0, height, 0, 1))
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76 if KeyIsDown(Down) and (player.transform.Col(3).y + barSize/2) < height:
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77 player.transform = player.transform * Translate(0'f, 1'f * dt, 0'f)
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78 if KeyIsDown(Up) and (player.transform.Col(3).y - barSize/2) > 0:
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79 player.transform = player.transform * Translate(0'f, -1'f * dt, 0'f)
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81 # bounce level
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82 if ball.transform.Col(3).x + ballSize/2 > width: ballVelocity[0] = -ballVelocity[0]
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83 if ball.transform.Col(3).y - ballSize/2 <= 0: ballVelocity[1] = -ballVelocity[1]
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84 if ball.transform.Col(3).y + ballSize/2 > height: ballVelocity[1] = -ballVelocity[1]
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85
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86 ball.transform = ball.transform * Translate(ballVelocity[0] * dt, ballVelocity[1] * dt, 0'f32)
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88 # loose
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89 if ball.transform.Col(3).x - ballSize/2 <= 0:
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90 ball.transform = Scale(ballSize, ballSize, 1'f) * Translate(30'f, 30'f, 0'f)
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91 ballVelocity = NewVec2f(1, 1).Normalized * ballSpeed
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93 # bar
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94 if ball.transform.Col(3).x - ballSize/2 <= barWidth:
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95 let
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96 barTop = player.transform.Col(3).y - barSize/2
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97 barBottom = player.transform.Col(3).y + barSize/2
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98 ballTop = ball.transform.Col(3).y - ballSize/2
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99 ballBottom = ball.transform.Col(3).y + ballSize/2
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100 if ballTop >= barTop and ballBottom <= barBottom:
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101 ballVelocity[0] = abs(ballVelocity[0])
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102
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103 myengine.RenderScene(level)
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104 myengine.Destroy()