From 436659aaceb6914722d79b1ed812f2cd2be78041 Mon Sep 17 00:00:00 2001
From: Vincent Shields <vince.shields913@gmail.com>
Date: Fri, 13 Feb 2026 01:04:57 -0800
Subject: [PATCH 1/3] ported shapes_simple_particles.c from the official raylib
 examples to Odin

---
 .../ports/shapes/shapes_simple_particles.odin | 306 ++++++++++++++++++
 .../ports/shapes/shapes_simple_particles.png  | Bin 0 -> 10261 bytes
 2 files changed, 306 insertions(+)
 create mode 100644 raylib/ports/shapes/shapes_simple_particles.odin
 create mode 100644 raylib/ports/shapes/shapes_simple_particles.png

diff --git a/raylib/ports/shapes/shapes_simple_particles.odin b/raylib/ports/shapes/shapes_simple_particles.odin
new file mode 100644
index 00000000..13c6f53e
--- /dev/null
+++ b/raylib/ports/shapes/shapes_simple_particles.odin
@@ -0,0 +1,306 @@
+/*******************************************************************************************
+*
+*   raylib [shapes] example - simple particles
+*
+*   Example complexity rating: [★★☆☆] 2/4
+*
+*   Example originally created with raylib 5.6, last time updated with raylib 5.6
+*
+*   Example contributed by Jordi Santonja (@JordSant)
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2025 Jordi Santonja (@JordSant)
+*
+********************************************************************************************/
+package raylib_examples
+
+import "core:math"
+import "core:math/rand"
+import rl "vendor:raylib"
+
+//----------------------------------------------------------------------------------
+// Types and Structures Definition
+//----------------------------------------------------------------------------------
+
+SCREEN_WIDTH :: 800
+SCREEN_HEIGHT :: 450
+MAX_PARTICLES :: 3000
+
+Particle_Type :: enum {
+	WATER,
+	SMOKE,
+	FIRE,
+}
+
+PARTICLE_TYPE_NAMES :: [Particle_Type]cstring {
+	.WATER = "WATER",
+	.SMOKE = "SMOKE",
+	.FIRE  = "FIRE",
+}
+
+Particle :: struct {
+	type:      Particle_Type,
+	position:  rl.Vector2,
+	velocity:  rl.Vector2,
+	radius:    f32,
+	color:     rl.Color,
+	life_time: f32,
+	alive:     bool,
+}
+
+Circular_Buffer :: struct {
+	head:   int,
+	tail:   int,
+	buffer: [MAX_PARTICLES]Particle,
+}
+
+
+cb: Circular_Buffer
+emission_rate: int = -2
+current_type: Particle_Type = .WATER
+emitter_position: rl.Vector2
+type_names := PARTICLE_TYPE_NAMES
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+
+main :: proc() {
+
+	// Initialization
+	//--------------------------------------------------------------------------------------
+	
+	rl.InitWindow(SCREEN_WIDTH, SCREEN_HEIGHT, "raylib [shapes] example - simple particles (Odin)")
+	defer rl.CloseWindow()
+
+	rl.SetTargetFPS(60)
+
+	emitter_position = {f32(SCREEN_WIDTH) / 2.0, f32(SCREEN_HEIGHT) / 2.0}
+	
+	//--------------------------------------------------------------------------------------
+
+	// Main "game" loop
+	
+	for !rl.WindowShouldClose() {
+		// Update
+		//----------------------------------------------------------------------------------
+		update()
+		//----------------------------------------------------------------------------------
+
+		// Draw
+		//----------------------------------------------------------------------------------
+		draw()
+		//----------------------------------------------------------------------------------
+	}
+
+	// De-Initialization
+	//--------------------------------------------------------------------------------------
+	// No resources to unload
+	//--------------------------------------------------------------------------------------
+}
+
+//----------------------------------------------------------------------------------
+// Module Functions Definition
+//----------------------------------------------------------------------------------
+update :: proc() {
+	
+	if emission_rate < 0 {
+		if rand.int31() % i32(-emission_rate) == 0 {
+			emit_particle()
+		}
+	} else {
+		for i := 0; i <= emission_rate; i += 1 {
+			emit_particle()
+		}
+	}
+
+	
+	update_particles()
+
+	// Remove dead particles from the circular buffer
+	update_circular_buffer()
+
+	
+	if rl.IsKeyPressed(.UP) do emission_rate += 1
+	if rl.IsKeyPressed(.DOWN) do emission_rate -= 1
+
+	
+	if rl.IsKeyPressed(.RIGHT) {
+		current_type = Particle_Type((int(current_type) + 1) % len(Particle_Type))
+	}
+	if rl.IsKeyPressed(.LEFT) {
+		current_type = Particle_Type(
+			(int(current_type) + len(Particle_Type) - 1) % len(Particle_Type),
+		)
+	}
+
+	
+	if rl.IsMouseButtonDown(.LEFT) {
+		emitter_position = rl.GetMousePosition()
+	}
+}
+
+draw :: proc() {
+	rl.BeginDrawing()
+	defer rl.EndDrawing()
+
+	rl.ClearBackground(rl.RAYWHITE)
+
+
+	draw_particles()
+
+
+	rl.DrawRectangle(5, 5, 315, 75, rl.Fade(rl.SKYBLUE, 0.5))
+	rl.DrawRectangleLines(5, 5, 315, 75, rl.BLUE)
+
+	rl.DrawText("CONTROLS:", 15, 15, 10, rl.BLACK)
+	rl.DrawText("UP/DOWN: Change Particle Emission Rate", 15, 35, 10, rl.BLACK)
+	rl.DrawText("LEFT/RIGHT: Change Particle Type (Water, Smoke, Fire)", 15, 55, 10, rl.BLACK)
+
+	if emission_rate < 0 {
+		rl.DrawText(
+			rl.TextFormat(
+				"Particles every %d frames | Type: %s",
+				-emission_rate,
+				type_names[current_type],
+			),
+			15,
+			95,
+			10,
+			rl.DARKGRAY,
+		)
+	} else {
+		rl.DrawText(
+			rl.TextFormat(
+				"%d Particles per frame | Type: %s",
+				emission_rate + 1,
+				type_names[current_type],
+			),
+			15,
+			95,
+			10,
+			rl.DARKGRAY,
+		)
+	}
+
+	rl.DrawFPS(SCREEN_WIDTH - 80, 10)
+}
+
+emit_particle :: proc() {
+	particle := add_to_circular_buffer()
+	if particle == nil do return
+
+
+	particle.position = emitter_position
+	particle.alive = true
+	particle.life_time = 0.0
+	particle.type = current_type
+
+	speed := f32(rand.int31() % 10) / 5.0
+
+	switch current_type {
+	case .WATER:
+		particle.radius = 5.0
+		particle.color = rl.BLUE
+	case .SMOKE:
+		particle.radius = 7.0
+		particle.color = rl.GRAY
+	case .FIRE:
+		particle.radius = 10.0
+		particle.color = rl.YELLOW
+		speed /= 10.0
+	}
+
+	direction := f32(rand.int31() % 360)
+	rad := direction * math.RAD_PER_DEG
+	particle.velocity = {speed * math.cos(rad), speed * math.sin(rad)}
+}
+
+add_to_circular_buffer :: proc() -> ^Particle {
+	// Check if buffer is full
+	next_head := (cb.head + 1) % MAX_PARTICLES
+	if next_head == cb.tail do return nil
+
+	// Add new particle to the head position and advance head
+	particle := &cb.buffer[cb.head]
+	cb.head = next_head
+	return particle
+}
+
+update_particles :: proc() {
+	i := cb.tail
+	for i != cb.head {
+		p := &cb.buffer[i]
+
+
+		p.life_time += 1.0 / 60.0
+
+		switch p.type {
+		case .WATER:
+			p.position.x += p.velocity.x
+			p.velocity.y += 0.2 
+			p.position.y += p.velocity.y
+        // Smoke expands and fades
+		case .SMOKE:
+			p.position.x += p.velocity.x
+			p.velocity.y -= 0.05 
+			p.position.y += p.velocity.y
+			p.radius += 0.5 
+
+			if p.color.a > 4 {
+				p.color.a -= 4
+			} else {
+				p.alive = false
+			}
+
+		case .FIRE:
+			// Make fire look more natural by adding horizontal oscillation.
+			// Real flame does not rise in a straight line
+			p.position.x += p.velocity.x + math.cos(p.life_time * 215.0)
+			p.velocity.y -= 0.05 // Upwards
+			p.position.y += p.velocity.y
+			p.radius -= 0.15 // Fire shrinks
+
+
+			if p.color.g > 3 {
+				p.color.g -= 3
+			} else {
+				p.alive = false
+			}
+
+			if p.radius <= 0.02 {
+				p.alive = false
+			}
+		}
+
+		// Disable particle when out of screen
+		if p.position.x < -p.radius ||
+		   p.position.x > f32(SCREEN_WIDTH) + p.radius ||
+		   p.position.y < -p.radius ||
+		   p.position.y > f32(SCREEN_HEIGHT) + p.radius {
+			p.alive = false
+		}
+
+		i = (i + 1) % MAX_PARTICLES
+	}
+}
+
+// Update circular buffer: advance tail over dead particles
+update_circular_buffer :: proc() {
+	for cb.tail != cb.head && !cb.buffer[cb.tail].alive {
+		cb.tail = (cb.tail + 1) % MAX_PARTICLES
+	}
+}
+
+draw_particles :: proc() {
+	i := cb.tail
+	for i != cb.head {
+		p := &cb.buffer[i]
+		if p.alive {
+			rl.DrawCircleV(p.position, p.radius, p.color)
+		}
+		i = (i + 1) % MAX_PARTICLES
+	}
+}
diff --git a/raylib/ports/shapes/shapes_simple_particles.png b/raylib/ports/shapes/shapes_simple_particles.png
new file mode 100644
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literal 0
HcmV?d00001


From f1382598cf599cdae2554d2dae07fef1ddabcead Mon Sep 17 00:00:00 2001
From: Vincent Shields <vince.shields913@gmail.com>
Date: Fri, 13 Feb 2026 01:18:32 -0800
Subject: [PATCH 2/3] Remove all 'do' statements and change indentation to
 tabs. build with  -vet -strict-style -vet-tabs -disallow-do
 -warnings-as-errors

---
 raylib/ports/shapes/shapes_simple_particles.odin | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/raylib/ports/shapes/shapes_simple_particles.odin b/raylib/ports/shapes/shapes_simple_particles.odin
index 13c6f53e..d0389bf8 100644
--- a/raylib/ports/shapes/shapes_simple_particles.odin
+++ b/raylib/ports/shapes/shapes_simple_particles.odin
@@ -123,8 +123,8 @@ update :: proc() {
 	update_circular_buffer()
 
 	
-	if rl.IsKeyPressed(.UP) do emission_rate += 1
-	if rl.IsKeyPressed(.DOWN) do emission_rate -= 1
+	if rl.IsKeyPressed(.UP) { emission_rate += 1 }
+	if rl.IsKeyPressed(.DOWN) { emission_rate -= 1 }
 
 	
 	if rl.IsKeyPressed(.RIGHT) {
@@ -190,7 +190,7 @@ draw :: proc() {
 
 emit_particle :: proc() {
 	particle := add_to_circular_buffer()
-	if particle == nil do return
+	if particle == nil { return }
 
 
 	particle.position = emitter_position
@@ -221,7 +221,7 @@ emit_particle :: proc() {
 add_to_circular_buffer :: proc() -> ^Particle {
 	// Check if buffer is full
 	next_head := (cb.head + 1) % MAX_PARTICLES
-	if next_head == cb.tail do return nil
+	if next_head == cb.tail { return nil }
 
 	// Add new particle to the head position and advance head
 	particle := &cb.buffer[cb.head]
@@ -242,7 +242,7 @@ update_particles :: proc() {
 			p.position.x += p.velocity.x
 			p.velocity.y += 0.2 
 			p.position.y += p.velocity.y
-        // Smoke expands and fades
+		// Smoke expands and fades
 		case .SMOKE:
 			p.position.x += p.velocity.x
 			p.velocity.y -= 0.05 

From 1f1fd82cd4a1e896c8f8009719b3ad70a4e30e38 Mon Sep 17 00:00:00 2001
From: Vincent Shields <vince.shields913@gmail.com>
Date: Fri, 13 Feb 2026 01:26:57 -0800
Subject: [PATCH 3/3] Add raylib/ports/shapes/shapes_simple_particles.odin to
 check.yml

---
 .github/workflows/check.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 73b767d2..416ffed5 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -81,6 +81,7 @@ jobs:
           odin check raylib/ports/shapes/shapes_rectangle_scaling.odin -file $FLAGS
           odin check raylib/ports/shapes/shapes_collision_area.odin -file $FLAGS
           odin check raylib/ports/shapes/shapes_logo_raylib.odin -file $FLAGS
+          odin check raylib/ports/shapes/shapes_simple_particles.odin -file $FLAGS
           odin check raylib/ports/text/text_codepoints_loading.odin -file $FLAGS
           odin check raylib/ports/textures/textures_gif_player.odin -file $FLAGS
           odin check raylib/ports/textures/textures_bunnymark.odin -file $FLAGS