Implemented brothers movements

src/brothers.zig

@@ -1,3 +1,4 @@
+const inputs = @import("inputs.zig");
 const std = @import("std");
 const utils = @import("utils.zig");
 const w4 = @import("wasm4.zig");
@@ -5,8 +6,10 @@ const w4 = @import("wasm4.zig");
 pub const Brother = struct {
     side: utils.side,
     score: u8,
+    // position of the bottom left corner
     x: u8,
     y: f64,
+    vy: f64,
     pub fn draw(self: Brother) void {
         var y = @floatToInt(u8, std.math.round(self.y));
         w4.DRAW_COLORS.* = 0x30;
@@ -20,6 +23,12 @@ pub const Brother = struct {
         self.x = utils.startingX[@enumToInt(self.side)];
         self.y = 160;
     }
+    pub fn update(self: *Brother, gamepad: inputs.Gamepad) void {
+        if (gamepad.held.left and self.x > utils.leftLimit[@enumToInt(self.side)])
+            self.x -= 1;
+        if (gamepad.held.right and self.x <= utils.rightLimit[@enumToInt(self.side)] - brother_width)
+            self.x += 1;
+    }
 };
 
 //----- Sprite ----------------------------------------------------------------

src/game.zig

@@ -1,14 +1,16 @@
+const ball = @import("ball.zig");
+const brothers = @import("brothers.zig");
+const inputs = @import("inputs.zig");
 const std = @import("std");
 const utils = @import("utils.zig");
 const w4 = @import("wasm4.zig");
 
-const ball = @import("ball.zig");
-const brothers = @import("brothers.zig");
-
 pub const Game = struct {
     ball: ball.Ball = undefined,
     brothers: [2]brothers.Brother = undefined,
+    gamepads: [4]inputs.Gamepad = undefined,
     playerSide: utils.side = undefined,
+
     pub fn draw(self: *Game) void {
         self.ball.draw();
         self.brothers[0].draw();
@@ -20,8 +22,17 @@ pub const Game = struct {
     pub fn reset(self: *Game) void {
         self.brothers[0].reset(.left);
         self.brothers[1].reset(.right);
+        self.resetRound();
+    }
+    pub fn resetRound(self: *Game) void {
         self.ball.resetRound(.left);
         self.brothers[0].resetRound();
         self.brothers[1].resetRound();
     }
+    pub fn update(self: *Game) void {
+        self.gamepads[0].update(w4.GAMEPAD1.*);
+        self.gamepads[1].update(w4.GAMEPAD2.*);
+        self.brothers[0].update(self.gamepads[0]);
+        self.brothers[1].update(self.gamepads[1]);
+    }
 };

src/main.zig

@@ -11,5 +11,6 @@ export fn start() void {
 }
 
 export fn update() void {
+    Game.update();
     Game.draw();
 }