mittens-engine 0.7.0

A Vulkan and OpenXR scene engine with ECS, reactive signals, and Meow Meow scripting
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162

BGC {
    C.rgba(0.9, 0.9, 0.9, 1.0)
}

let stencil_clip_debug_texture = Texture.render_image("render_graph.stencil_clip.debug")


BG {
    T.position(0.0, 0.0, -5.0)
    .scale(10.0, 10.0, 1.0)
    .rotation(2,3,0) {
        R.cube() {
            C.rgba(1.0, 1.0, 1.0, 1.0)
        }
    }
    T.position(0.0, 0.0,  4.9).scale(9.5, 9.5, 1.0) {
        R.cube() {
            C.rgba(0.8, 0.8, 0.8, 1.0)

        }
    }
}


I {
    speed(1.0)
    InputTransformMode.forward_z() {
        roll_axis_y()
        fps_rotation()
    }
    T.position(0.0, 1.2, 3.5) {
        C3D {
            Pointer {}
        }

        T.position(1.4, -1.1, -3.0).scale(1.4, 1.0, 1.0) {
            OV {
                R.square() {
                    C.rgba(0.98, 0.98, 0.98, 1.0)
                }

                T.position(0.0, 0.0, 0.01).scale(0.86, 0.66, 1.0) {
                    R.square() {
                        C.rgba(1.0, 1.0, 1.0, 1.0)
                        stencil_clip_debug_texture
                        TextureFiltering.linear()
                    }
                }

                T.position(-0.4, -0.42, 0.02).scale(0.05, 0.05, 1.0) {
                    TXT {
                        "s-buffer debug"
                        C.rgba(0.08, 0.08, 0.10, 1.0)
                    }
                }
            }
        }
    }
}

T.position(5, 0, 1.0).scale(1.8, 4.8, 1.0) {
    // Sketch of the intended topology:
    // - this scaled T defines the viewport pose + size
    // - StencilClip owns the content branch
    // - The clip shape renderable owns StencilClip
    // - the plane keeps viewport scale and defines the stencil boundary
    // - the pipeline drops scale before producing the scroll/content branch
    R.plane() {
        C.rgba(0.9, 0.9, 0.9, 1.0)
        Raycastable {}
    
        StencilClip {
            TransformForkTRS {
                TransformMapScale {
                    TransformDrop {}
                }
                T {
                    Scrolling.new(1.0, 100.0) {
                        for y in range(100) {
                            T.position(0, y / 4.0, 0.01).scale(0.12, 0.12, 0.12) {
                                Text {
                                    "item "+y
                                    C.rgba(1.0, 0.9, 0.9, 1.0)
                                    Emissive.on()
                            }
                        }
                    }
                }
            }
        }
    }
}
}

// lighting
AL {
    C.rgba(0.14, 0.14, 0.14, 1.0)
}
T.position(-1, -1, 0) {
    DL {
        intensity(0.9)
        C.rgba(1.0, 0.75, 0.75, 1.0)
    }
}
T.position(1,1,0) {
    DL {
        intensity(0.9)
        C.rgba(0.75, 0.75, 1.0, 1.0)
    }
}

// render graph
RenderGraph {
    EmissivePass {

    }
    Bloom {
        intensity(0.95)
        radius_ndc(0.06)
        emissive_scale(1.2)
        half_res(true)
    }
}

// perimeter cubes
ED {
T.position(0.0, -5.0, -5.0) {
    T.position(0, 0, -2) {
        R.cube() {
            C.rgba(0.8, 0.8, 0.8, 1.0)
            Emissive.on()
        }
    
        let i = 0;
        for x in range(-5, 6) {
            for y in range(-5, 6) {
                i = i + 1;
                T.position(x, y, 0.0).scale(0.9, 0.9, 0.9) {
                    if x % 2 == 0 && y % 2 == 0 {
                        let red = (x + y) / 5.0;

                        if (red > 0.2) {
                            R.cube() {

                                C.rgba(red, x / 5.0, y / 5.0, 1.0)
                                Emissive.on()
                            }
                        }

                    } else {
                        R.cube() {
                            C.rgba(x / 5.0, 1.0, y / 5.0, 1.0)
                        }
                    }
                }

            }
        }

    }
}
}