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Add aabb example (#86)
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‎model/aabb/all.texture_profiles‎

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path_settings {
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path: "**"
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profile: "Default"
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}
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profiles {
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name: "Default"
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platforms {
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os: OS_ID_GENERIC
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formats {
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format: TEXTURE_FORMAT_RGBA
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compression_level: BEST
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compression_type: COMPRESSION_TYPE_DEFAULT
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}
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mipmaps: false
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max_texture_size: 0
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premultiply_alpha: true
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}
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}

‎model/aabb/assets/materials/unlit.fp‎

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#version 140
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// Inputs should match the vertex shader's outputs.
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in vec2 var_texcoord0;
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// The texture to sample.
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uniform lowp sampler2D texture0;
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// The final color of the fragment.
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out lowp vec4 final_color;
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uniform fs_uniforms
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{
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mediump vec4 tint;
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};
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void main()
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{
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// Pre-multiply alpha since all runtime textures already are
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vec4 tint_pm = vec4(tint.xyz * tint.w, tint.w);
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// Sample the texture at the fragment's texture coordinates.
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vec4 color = texture(texture0, var_texcoord0.xy) * tint_pm;
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// Output the sampled color.
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final_color = color;
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}

‎model/aabb/assets/materials/unlit.material‎

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name: "unlit"
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tags: "model"
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vertex_program: "/assets/materials/unlit.vp"
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fragment_program: "/assets/materials/unlit.fp"
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vertex_space: VERTEX_SPACE_LOCAL
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vertex_constants {
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name: "mtx_view"
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type: CONSTANT_TYPE_VIEW
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}
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vertex_constants {
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name: "mtx_proj"
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type: CONSTANT_TYPE_PROJECTION
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}
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fragment_constants {
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name: "tint"
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type: CONSTANT_TYPE_USER
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value {
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x: 1.0
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y: 1.0
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z: 1.0
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w: 1.0
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}
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}
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samplers {
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name: "texture0"
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wrap_u: WRAP_MODE_CLAMP_TO_EDGE
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wrap_v: WRAP_MODE_CLAMP_TO_EDGE
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filter_min: FILTER_MODE_MIN_LINEAR
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filter_mag: FILTER_MODE_MAG_LINEAR
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max_anisotropy: 0.0
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}

‎model/aabb/assets/materials/unlit.vp‎

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#version 140
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// The model's vertex position and texture coordinates.
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in vec4 position;
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in vec2 texcoord0;
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// The model's world matrix.
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in mat4 mtx_world;
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// The projection and view matrices.
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uniform general_vp
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{
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mat4 mtx_view;
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mat4 mtx_proj;
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};
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// The output of a vertex shader are passed to the fragment shader.
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// The texture coordinates of the vertex.
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out vec2 var_texcoord0;
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void main()
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{
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// Pass the texture coordinates to the fragment shader.
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var_texcoord0 = texcoord0;
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// Transform the vertex position to clip space.
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gl_Position = mtx_proj * mtx_view * mtx_world * vec4(position.xyz, 1.0);
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}

‎model/aabb/assets/models/License.txt‎

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Prototype Kit (1.0)
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Created/distributed by Kenney (www.kenney.nl)
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Creation date: 28-08-2024 09:59
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------------------------------
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License: (Creative Commons Zero, CC0)
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http://creativecommons.org/publicdomain/zero/1.0/
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You can use this content for personal, educational, and commercial purposes.
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Support by crediting 'Kenney' or 'www.kenney.nl' (this is not a requirement)
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------------------------------
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• Website : www.kenney.nl
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• Donate : www.kenney.nl/donate
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• Patreon : patreon.com/kenney
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Follow on social media for updates:
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• Twitter: twitter.com/KenneyNL
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• Instagram: instagram.com/kenney_nl
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• Mastodon: mastodon.gamedev.place/@kenney

‎model/aabb/assets/models/Textures/colormap.png‎

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‎model/aabb/assets/models/crate-color.glb‎

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‎model/aabb/assets/models/crate.glb‎

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‎model/aabb/example.md‎

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---
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tags: model
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title: AABB
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brief: This example demonstrates how to use the `model.get_aabb()` function in a 3D scene.
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scripts: aabb.script
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author: Artsiom Trubchyk
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---
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This example shows how to work with Axis-Aligned Bounding Boxes (AABB) in a 3D scene. The setup consists of falling cubes that are dynamically tracked by a camera using their combined bounding box. The example demonstrates:
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* How to create and manage a dynamic bounding box that updates with moving objects
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* Using `model.get_aabb()` to get object bounds
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* Camera positioning based on bounding box size
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* Dynamic object spawning with factory
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* Smooth camera transitions
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Press SPACE or click to spawn new cubes. The camera will automatically adjust to keep all objects in view based on their combined bounding box.
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The models used in this example are from Kenney's [Prototype Kit](https://kenney.nl/assets/prototype-kit), licensed under CC0.

‎model/aabb/example/aabb.collection‎

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name: "gltf"
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scale_along_z: 1
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embedded_instances {
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id: "camera"
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data: "embedded_components {\n"
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" id: \"camera\"\n"
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" type: \"camera\"\n"
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" data: \"aspect_ratio: 1.0\\n"
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"fov: 0.7854\\n"
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"near_z: 0.1\\n"
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"far_z: 1000.0\\n"
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"auto_aspect_ratio: 1\\n"
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"\"\n"
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"}\n"
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""
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position {
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x: 1.6733184
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y: 0.87541014
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z: -2.2133834
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}
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rotation {
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x: -0.041512698
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y: 0.93996596
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z: 0.12374887
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w: 0.31532025
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}
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}
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embedded_instances {
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id: "main"
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data: "components {\n"
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" id: \"aabb\"\n"
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" component: \"/example/aabb.script\"\n"
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"}\n"
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"embedded_components {\n"
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" id: \"factory_box1\"\n"
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" type: \"factory\"\n"
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" data: \"prototype: \\\"/example/box1.go\\\"\\n"
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"\"\n"
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"}\n"
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"embedded_components {\n"
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" id: \"factory_box2\"\n"
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" type: \"factory\"\n"
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" data: \"prototype: \\\"/example/box2.go\\\"\\n"
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"\"\n"
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"}\n"
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""
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}
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embedded_instances {
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id: "ground"
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data: "embedded_components {\n"
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" id: \"sprite\"\n"
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" type: \"sprite\"\n"
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" data: \"default_animation: \\\"anim\\\"\\n"
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"material: \\\"/builtins/materials/sprite.material\\\"\\n"
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"size {\\n"
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" x: 40.0\\n"
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" y: 40.0\\n"
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"}\\n"
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"size_mode: SIZE_MODE_MANUAL\\n"
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"textures {\\n"
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" sampler: \\\"texture_sampler\\\"\\n"
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" texture: \\\"/builtins/graphics/particle_blob.tilesource\\\"\\n"
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"}\\n"
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"\"\n"
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" rotation {\n"
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" x: 0.70710677\n"
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" w: 0.70710677\n"
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" }\n"
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"}\n"
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"embedded_components {\n"
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" id: \"collisionobject\"\n"
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" type: \"collisionobject\"\n"
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" data: \"type: COLLISION_OBJECT_TYPE_STATIC\\n"
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"mass: 0.0\\n"
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"friction: 0.8\\n"
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"restitution: 0.2\\n"
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"group: \\\"default\\\"\\n"
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"mask: \\\"default\\\"\\n"
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"embedded_collision_shape {\\n"
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" shapes {\\n"
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" shape_type: TYPE_BOX\\n"
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" position {\\n"
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" y: -0.25\\n"
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" }\\n"
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" rotation {\\n"
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" }\\n"
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" index: 0\\n"
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" count: 3\\n"
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" }\\n"
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" data: 50.0\\n"
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" data: 0.25\\n"
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" data: 50.0\\n"
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"}\\n"
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"\"\n"
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"}\n"
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""
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}

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