From 22d1469b0f53fcad0e19a34d463f65bc5ff1bb00 Mon Sep 17 00:00:00 2001
From: morrigan <phantom.morrigan@proton.me>
Date: Thu, 26 Jun 2025 22:19:33 +0200
Subject: [PATCH] movement and input handlin (delta time based distance still
 needed though)

---
 main.odin     | 23 ++++++++++++-----------
 movement.odin | 20 ++++++++++++++++++++
 unit.odin     |  3 +--
 3 files changed, 33 insertions(+), 13 deletions(-)
 create mode 100644 movement.odin

diff --git a/main.odin b/main.odin
index 0ca38e8..56742b8 100644
--- a/main.odin
+++ b/main.odin
@@ -8,9 +8,10 @@ WIDTH :: 1600
 HEIGHT :: 900
 
 Game :: struct {
-	render: ^sdl3.Renderer,
-	units:  [dynamic]Unit,
-	player: Unit,
+	render:      ^sdl3.Renderer,
+	units:       [dynamic]Unit,
+	player:      Unit,
+	input_state: map[sdl3.Scancode]bool,
 }
 
 main :: proc() {
@@ -28,11 +29,12 @@ main :: proc() {
 	units := make([dynamic]Unit)
 	append(&units, Unit{faction = Faction.Allied, position = Position{x = 500, y = 500}, hp = 100})
 	append(&units, Unit{faction = Faction.Enemy, position = Position{x = 700, y = 700}, hp = 100})
-
+	input_state := make(map[sdl3.Scancode]bool)
 	game := Game {
 		render = render,
 		units = units,
 		player = Unit{faction = Faction.Player, position = Position{x = 255, y = 255}, hp = 100},
+		input_state = input_state,
 	}
 
 	for {
@@ -41,18 +43,18 @@ main :: proc() {
 			#partial switch event.type {
 			case .QUIT:
 				return
+			case .KEY_UP:
+				HandleInput(&game, event)
 			case .KEY_DOWN:
-				{
-					fmt.println(event.key)
-				}
+				HandleInput(&game, event)
 			}
 		}
-
-		RenderGame(game)
+		MovePlayer(&game)
+		RenderGame(&game)
 	}
 }
 
-RenderGame :: proc(game: Game) {
+RenderGame :: proc(game: ^Game) {
 	sdl3.SetRenderDrawColor(game.render, 0, 0, 0, 0)
 	sdl3.RenderClear(game.render)
 
@@ -63,5 +65,4 @@ RenderGame :: proc(game: Game) {
 	RenderUnit(game.player, game)
 
 	sdl3.RenderPresent(game.render)
-
 }
diff --git a/movement.odin b/movement.odin
new file mode 100644
index 0000000..66d7388
--- /dev/null
+++ b/movement.odin
@@ -0,0 +1,20 @@
+package main
+
+import "core:fmt"
+import "vendor:sdl3"
+
+HandleInput :: proc(game: ^Game, event: sdl3.Event) {
+	effect := event.type == sdl3.EventType.KEY_DOWN ? true : false
+	game.input_state[event.key.scancode] = effect
+}
+
+
+MovePlayer :: proc(game: ^Game) {
+	x: f32 = game.input_state[sdl3.Scancode.W] ? 1 : 0
+	x = game.input_state[sdl3.Scancode.S] ? -1 : 0
+	y: f32 = game.input_state[sdl3.Scancode.A] ? 1 : 0
+	y = game.input_state[sdl3.Scancode.D] ? -1 : 0
+	fmt.println(x, y)
+	game.player.position.y += y
+	game.player.position.x += x
+}
diff --git a/unit.odin b/unit.odin
index 5cad71e..1f8ca94 100644
--- a/unit.odin
+++ b/unit.odin
@@ -14,7 +14,7 @@ Unit :: struct {
 	hp:       u32,
 }
 
-RenderUnit :: proc(unit: Unit, game: Game) {
+RenderUnit :: proc(unit: Unit, game: ^Game) {
 	switch unit.faction {
 	case Faction.Player:
 		sdl3.SetRenderDrawColor(game.render, 0, 255, 0, 0)
@@ -29,7 +29,6 @@ RenderUnit :: proc(unit: Unit, game: Game) {
 	)
 }
 
-
 Projectile :: struct {
 	faction:   Faction,
 	position:  Position,