240 lines
7.9 KiB
Odin
240 lines
7.9 KiB
Odin
package main
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import "base:runtime"
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import "base:intrinsics"
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import "core:log"
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import "core:mem"
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import "core:time"
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import "core:fmt"
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import "core:testing"
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import "core:strings"
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import "core:path/filepath"
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import "core:math"
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import "core:math/linalg"
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import "core:os"
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import "core:math/rand"
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import stbi "vendor:stb/image"
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import sa "sokol/app"
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import sh "sokol/helpers"
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import "ecs"
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Vec2 :: [2]f32
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Vec3 :: [3]f32
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Vec4 :: [4]f32
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Globals :: struct {
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coordinator: ecs.Coordinator,
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input_system: ^ecs.InputSystem,
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physics_system: ^ecs.PhysicsSystem,
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camera_system: ^ecs.CameraSystem,
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render_system: ^ecs.RenderSystem,
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entities: []ecs.EntityID,
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}
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g: ^Globals
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default_context: runtime.Context
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main :: proc() {
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context.logger = log.create_console_logger()
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tracking_allocator: mem.Tracking_Allocator
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mem.tracking_allocator_init(&tracking_allocator, context.allocator)
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context.allocator = mem.tracking_allocator(&tracking_allocator)
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defer reset_tracking_allocator(&tracking_allocator)
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default_context = context
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sa.run({
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window_title = "ECS",
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allocator = sa.Allocator(sh.allocator(&default_context)),
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logger = sa.Logger(sh.logger(&default_context)),
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init_cb = init_cb,
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frame_cb = frame_cb,
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cleanup_cb = cleanup_cb,
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event_cb = event_cb,
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})
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}
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init_cb :: proc "c" () {
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context = default_context
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sa.show_mouse(false)
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sa.lock_mouse(true)
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g = new(Globals)
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g.coordinator = ecs.coordinator_create()
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create_scene()
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}
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frame_cb:: proc "c" () {
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context = default_context
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dt := f32(sa.frame_duration())
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ecs.physics_system_update(g.physics_system, &g.coordinator, dt)
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ecs.camera_system_update(g.camera_system, &g.coordinator, dt)
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ecs.render_system_update(g.render_system, &g.coordinator, dt)
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ecs.input_system_mouse_reset(g.input_system, &g.coordinator)
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}
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cleanup_cb :: proc "c" () {
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context = default_context
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ecs.render_system_delete(g.render_system, &g.coordinator)
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delete(g.entities)
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ecs.coordinator_destroy(&g.coordinator)
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free(g)
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}
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event_cb :: proc "c" (event: ^sa.Event) {
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context = default_context
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ecs.input_system_update(g.input_system, &g.coordinator, event)
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}
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create_scene :: proc() {
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ecs.coordinator_register_component(ecs.GravityComponent, &g.coordinator)
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ecs.coordinator_register_component(ecs.RigidBodyComponent, &g.coordinator)
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ecs.coordinator_register_component(ecs.TransformComponent, &g.coordinator)
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ecs.coordinator_register_component(ecs.ColorComponent, &g.coordinator)
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ecs.coordinator_register_component(ecs.CameraComponent, &g.coordinator)
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ecs.coordinator_register_component(ecs.MaterialComponent, &g.coordinator)
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ecs.coordinator_register_component(ecs.MeshComponent, &g.coordinator)
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ecs.coordinator_register_component(ecs.InputComponent, &g.coordinator)
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g.physics_system = ecs.coordinator_register_system(ecs.PhysicsSystem, &g.coordinator)
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signature := ecs.signature_create()
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ecs.signature_set(&signature, ecs.coordinator_get_component_type(ecs.GravityComponent, &g.coordinator))
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ecs.signature_set(&signature, ecs.coordinator_get_component_type(ecs.RigidBodyComponent, &g.coordinator))
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ecs.signature_set(&signature, ecs.coordinator_get_component_type(ecs.TransformComponent, &g.coordinator))
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ecs.coordinator_set_system_signature(ecs.PhysicsSystem, &g.coordinator, signature)
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g.render_system = ecs.coordinator_register_system(ecs.RenderSystem, &g.coordinator)
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ecs.signature_clear(&signature)
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ecs.signature_set(&signature, ecs.coordinator_get_component_type(ecs.TransformComponent, &g.coordinator))
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ecs.signature_set(&signature, ecs.coordinator_get_component_type(ecs.ColorComponent, &g.coordinator))
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ecs.signature_set(&signature, ecs.coordinator_get_component_type(ecs.MeshComponent, &g.coordinator))
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ecs.signature_set(&signature, ecs.coordinator_get_component_type(ecs.MaterialComponent, &g.coordinator))
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ecs.coordinator_set_system_signature(ecs.RenderSystem, &g.coordinator, signature)
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g.camera_system = ecs.coordinator_register_system(ecs.CameraSystem, &g.coordinator)
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ecs.signature_clear(&signature)
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ecs.signature_set(&signature, ecs.coordinator_get_component_type(ecs.CameraComponent, &g.coordinator))
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ecs.signature_set(&signature, ecs.coordinator_get_component_type(ecs.InputComponent, &g.coordinator))
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ecs.coordinator_set_system_signature(ecs.CameraSystem, &g.coordinator, signature)
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g.input_system = ecs.coordinator_register_system(ecs.InputSystem, &g.coordinator)
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ecs.signature_clear(&signature)
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ecs.signature_set(&signature, ecs.coordinator_get_component_type(ecs.InputComponent, &g.coordinator))
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ecs.coordinator_set_system_signature(ecs.InputSystem, &g.coordinator, signature)
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camera_entity := ecs.coordinator_create_entity(&g.coordinator)
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ecs.coordinator_add_component(
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ecs.CameraComponent,
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&g.coordinator,
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camera_entity,
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ecs.CameraComponent{
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position = { 30, 0, 60 },
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target = { 0, 0, 1 },
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look = { 0, 0 },
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movement_speed = 3.0,
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look_sensitivity = 0.15,
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})
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ecs.coordinator_add_component(
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ecs.InputComponent,
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&g.coordinator,
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camera_entity,
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ecs.InputComponent{
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key_down = {},
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mouse_movement = Vec2{ 0, 0 }
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})
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ecs.render_system_init(g.render_system, camera_entity)
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g.entities = make([]ecs.EntityID, 1000)
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for &entity in g.entities {
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entity = ecs.coordinator_create_entity(&g.coordinator)
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ecs.coordinator_add_component(
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ecs.GravityComponent,
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&g.coordinator,
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entity,
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ecs.GravityComponent{
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ecs.Vec3{0.0, -2.82, 0.0}
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})
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ecs.coordinator_add_component(
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ecs.RigidBodyComponent,
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&g.coordinator,
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entity,
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ecs.RigidBodyComponent{
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velocity = ecs.Vec3{0.0, 0.0, 0.0},
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acceleration = ecs.Vec3{0.0, 0.0, 0.0},
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})
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ecs.coordinator_add_component(
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ecs.TransformComponent,
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&g.coordinator,
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entity,
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ecs.TransformComponent{
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position = Vec3{
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f32(rand.int_max(50)),
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f32(rand.int_max(10)),
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f32(rand.int_max(50)),
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},
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rotation = ecs.Vec3{0.0, 0.0, 0.0},
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scale = ecs.Vec3{1.0, 1.0, 1.0},
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})
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ecs.coordinator_add_component(
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ecs.ColorComponent,
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&g.coordinator,
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entity,
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ecs.ColorComponent{
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color = Vec4{
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rand.float32_uniform(0,1),
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rand.float32_uniform(0,1),
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rand.float32_uniform(0,1),
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rand.float32_uniform(0,1),
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},
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})
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ecs.coordinator_add_component(
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ecs.MeshComponent,
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&g.coordinator,
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entity,
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ecs.MeshComponent{
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mesh_id = .Cube
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})
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ecs.coordinator_add_component(
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ecs.MaterialComponent,
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&g.coordinator,
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entity,
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ecs.MaterialComponent{
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material_id = .Grid
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})
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}
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}
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reset_tracking_allocator :: proc(track: ^mem.Tracking_Allocator) {
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if len(track.allocation_map) > 0 {
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fmt.eprintf("=== %v allocations not freed: ===\n", len(track.allocation_map))
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for _, entry in track.allocation_map {
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fmt.eprintf("- %v bytes @ %v\n", entry.size, entry.location)
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}
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}
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if len(track.bad_free_array) > 0 {
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fmt.eprintf("=== %v incorrect frees: ===\n", len(track.bad_free_array))
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for entry in track.bad_free_array {
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fmt.eprintf("- %p @ %v\n", entry.memory, entry.location)
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}
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}
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mem.tracking_allocator_destroy(track)
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}
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