Refactor with some better types

src/types.rs

@@ -0,0 +1,55 @@
+#[derive(Deserialize, Serialize)]
+pub struct Vec2 {
+    pub x: f32,
+    pub y: f32,
+}
+
+#[derive(Deserialize, Serialize)]
+pub struct Rect {
+    pub pos: Vec2,
+    pub size: Vec2,
+}
+
+impl Rect {
+    pub fn contains(&self, p: &Vec2) -> bool {
+        self.pos.x <= p.x
+            && p.x <= self.pos.x + self.size.x
+            && self.pos.y <= p.y
+            && p.y <= self.pos.y + self.size.y
+    }
+}
+
+#[derive(Deserialize)]
+pub struct Input {
+    pub screen_size: Vec2,
+    pub mouse_pos: Vec2,
+}
+
+#[derive(Serialize)]
+#[serde(rename_all = "snake_case")]
+pub enum TextAlign {
+    Start,
+    Center,
+    End,
+}
+
+#[derive(Serialize)]
+#[serde(rename_all = "snake_case", tag = "kind")]
+pub enum PaintCmd {
+    Clear {
+        fill_style: String,
+    },
+    RoundedRect {
+        fill_style: String,
+        pos: Vec2,
+        size: Vec2,
+        corner_radius: f32,
+    },
+    Text {
+        fill_style: String,
+        font: String,
+        pos: Vec2,
+        text: String,
+        text_align: TextAlign,
+    },
+}