move to directories. add examples

README.md

@@ -0,0 +1 @@
+my silly little ecs engine for odin and raylib :3

examples/bouncing_balls.odin

@@ -0,0 +1,86 @@
+package main
+
+import "core:fmt"
+import "core:math/rand"
+import "core:strconv"
+import "core:strings"
+import ecs "shoal/src"
+import rl "vendor:raylib"
+
+app: ecs.App
+
+ball_count: int = 1000
+BallComponent :: struct {
+	radius: f32,
+	speed:  f32,
+}
+Ball: ecs.Storage(BallComponent)
+
+main :: proc() {
+	ecs.add_plugin(&app, ecs.DefaultPlugin)
+	ecs.add_system(&app, ecs.STARTUP, setup_window)
+	ecs.add_system(&app, ecs.STARTUP, spawn_balls)
+	ecs.add_system(&app, ecs.UPDATE, update_balls)
+	ecs.add_system(&app, ecs.DRAW, draw_balls)
+	ecs.add_system(&app, ecs.DRAW, show_framerate)
+	ecs.run(&app)
+}
+
+setup_window :: proc() {
+	_, window := ecs.single(&ecs.Window)
+	window.background = rl.BLACK
+}
+
+spawn_balls :: proc() {
+	for i in 0 ..< ball_count {
+		ball := ecs.spawn_entity(&app)
+		ecs.add_component(
+			ball,
+			&Ball,
+			BallComponent{radius = 10, speed = rand.float32_range(4, 6)},
+		)
+		ecs.add_component(
+			ball,
+			&ecs.Transform,
+			ecs.TransformComponent {
+				translation = {400, 300},
+				rotation = rand.float32_range(0, 360),
+			},
+		)
+	}
+}
+
+update_balls :: proc() {
+	_, window := ecs.single(&ecs.Window)
+
+	for entity, ball in ecs.slice(&Ball) {
+		transform := ecs.get_component(entity, &ecs.Transform)
+		pos := transform.translation
+
+		if pos.x <= 0 || pos.x >= f32(window.width) || pos.y <= 0 || pos.y >= f32(window.height) {
+			transform.rotation -= 180
+		}
+		dir := rl.Vector2Rotate(rl.Vector2{0, ball.speed}, transform.rotation)
+
+		transform.translation += dir
+		fmt.println(transform.rotation)
+	}
+}
+
+draw_balls :: proc() {
+	for entity, ball in ecs.slice(&Ball) {
+		transform := ecs.get_component(entity, &ecs.Transform)
+		rl.DrawCircle(
+			i32(transform.translation.x),
+			i32(transform.translation.y),
+			ball.radius,
+			rl.PURPLE,
+		)
+	}
+}
+
+show_framerate :: proc() {
+	buf: [19]byte
+	framerate := strconv.write_int(buf[:], i64(1 / rl.GetFrameTime()), 10)
+	rl.DrawText(strings.clone_to_cstring(framerate), 0, 0, 24, rl.WHITE)
+}

plugins.odin

@@ -1,4 +0,0 @@
-#+private
-package shoal
-
-plugins: [dynamic]proc()

query.odin

@@ -1 +0,0 @@
-package shoal

src/componenets.odin

@@ -6,6 +6,7 @@ WindowComponent :: struct {
 	width:      i32,
 	height:     i32,
 	title:      string,
+	background: rl.Color,
 }
 Window: Storage(WindowComponent)
 

src/ecs.odin

@@ -42,7 +42,7 @@ run :: proc(app: ^App, entity_limit: int = 1000) {
 
 	rl.SetTargetFPS(60)
 	for !rl.WindowShouldClose() {
-		rl.ClearBackground(rl.WHITE)
+		rl.ClearBackground(window.background)
 		for i in app.update_systems {i()}
 		rl.BeginDrawing()
 		for i in app.draw_systems {i()}