From d5e67552d4f330d0227661ec75ee1b3052d3455e Mon Sep 17 00:00:00 2001
From: morrigan <phantom.morrigan@proton.me>
Date: Sun, 22 Jun 2025 21:35:03 +0200
Subject: [PATCH] sdl3 and uh some fun stuff!

---
 README.md |  3 +++
 main.odin | 55 ++++++++++++++++++++++++++++++-------------------------
 math.odin |  5 +++++
 unit.odin | 27 +++++++++++++++++++++++++++
 4 files changed, 65 insertions(+), 25 deletions(-)
 create mode 100644 README.md
 create mode 100644 math.odin
 create mode 100644 unit.odin

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..57a3651
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# Fumarole
+
+This project has the goal of exploring the Odin programming language, and its game dev applications.
diff --git a/main.odin b/main.odin
index b3020d8..548c5dd 100644
--- a/main.odin
+++ b/main.odin
@@ -1,54 +1,59 @@
 package main
 
 import "core:fmt"
-import "vendor:sdl2"
+import "core:image/png"
+import "vendor:sdl3"
 
 WIDTH :: 1600
 HEIGHT :: 900
 
 Game :: struct {
-	render: ^sdl2.Renderer,
-	time:   f64,
-	dt:     f64,
-}
-
-get_time :: proc() -> f64 {
-	return f64(sdl2.GetPerformanceCounter()) * 1000 / f64(sdl2.GetPerformanceFrequency())
+	render: ^sdl3.Renderer,
+	units:  [dynamic]Unit,
 }
 
 main :: proc() {
-	assert(sdl2.Init(sdl2.INIT_VIDEO) == 0, sdl2.GetErrorString())
-	defer sdl2.Quit()
+	assert(sdl3.Init(sdl3.INIT_VIDEO))
+	defer sdl3.Quit()
 
-	window := sdl2.CreateWindow("Game", 0, 0, 1600, 900, sdl2.WINDOW_SHOWN)
-	assert(window != nil, sdl2.GetErrorString())
-	defer sdl2.DestroyWindow(window)
+	window := sdl3.CreateWindow("Game", 1600, 900, nil)
+	assert(window != nil)
+	defer sdl3.DestroyWindow(window)
 
-	render := sdl2.CreateRenderer(window, -1, sdl2.RENDERER_ACCELERATED)
-	assert(render != nil, sdl2.GetErrorString())
+	render := sdl3.CreateRenderer(window, "vulkan")
+	assert(render != nil)
 
-	tickrate := 240.0
-	ticktime := 1000.0 / tickrate
+	units := make([dynamic]Unit)
+	append(&units, Unit{faction = Faction.Player, position = Position{x = 500, y = 500}, hp = 100})
+	append(&units, Unit{faction = Faction.Enemy, position = Position{x = 700, y = 700}, hp = 100})
 
 	game := Game {
 		render = render,
-		time   = get_time(),
-		dt     = ticktime,
+		units  = units,
 	}
 
 	for {
-		event: sdl2.Event
-		for sdl2.PollEvent(&event) {
+		event: sdl3.Event
+		for sdl3.PollEvent(&event) {
 			#partial switch event.type {
 			case .QUIT:
 				return
-
+			case .KEY_DOWN:
+				{
+					fmt.println(event.key)
+				}
 			}
 		}
 
-		sdl2.SetRenderDrawColor(render, 0, 0, 0, 0)
-		sdl2.RenderClear(render)
-		sdl2.RenderPresent(render)
+		sdl3.SetRenderDrawColor(render, 0, 0, 0, 0)
+		sdl3.RenderClear(render)
+
+		for unit in game.units {
+			RenderUnit(unit, game)
+		}
+
+		sdl3.RenderPresent(render)
+
 	}
 
 }
diff --git a/math.odin b/math.odin
new file mode 100644
index 0000000..811fee7
--- /dev/null
+++ b/math.odin
@@ -0,0 +1,5 @@
+package main
+
+Position :: struct {
+	x, y: f32,
+}
diff --git a/unit.odin b/unit.odin
new file mode 100644
index 0000000..5cce543
--- /dev/null
+++ b/unit.odin
@@ -0,0 +1,27 @@
+package main
+
+import "vendor:sdl3"
+
+Faction :: enum {
+	Player,
+	Enemy,
+}
+
+Unit :: struct {
+	faction:  Faction,
+	position: Position,
+	hp:       u32,
+}
+
+RenderUnit :: proc(unit: Unit, game: Game) {
+	switch unit.faction {
+	case Faction.Player:
+		sdl3.SetRenderDrawColor(game.render, 0, 255, 0, 0)
+	case Faction.Enemy:
+		sdl3.SetRenderDrawColor(game.render, 255, 0, 0, 0)
+	}
+	sdl3.RenderRect(
+		game.render,
+		&sdl3.FRect{x = unit.position.x, y = unit.position.y, w = 10, h = 10},
+	)
+}