From: Joshua Simmons <josh@nega.tv>
Date: Mon, 27 Oct 2025 22:40:10 +0000 (+0100)
Subject: shark: Improve camera controls
X-Git-Url: https://git.nega.tv//gitweb.cgi?a=commitdiff_plain;ds=sidebyside;p=josh%2Fnarcissus

shark: Improve camera controls
---

diff --git a/title/shark/src/game.rs b/title/shark/src/game.rs
index d1a9a09..90aa050 100644
--- a/title/shark/src/game.rs
+++ b/title/shark/src/game.rs
@@ -56,6 +56,7 @@ pub enum Action {
     CameraRight,
     CameraUp,
     CameraDown,
+    CameraZoom,
     Damage,
 }
 
@@ -81,6 +82,10 @@ impl Default for Actions {
 impl Actions {
     const MAX_ACTIONS: usize = 256;
 
+    fn value(&self, action: Action) -> f32 {
+        self.new_values[action as usize]
+    }
+
     fn is_active(&self, action: Action) -> bool {
         self.new_values[action as usize] != 0.0
     }
@@ -92,6 +97,9 @@ impl Actions {
     pub fn tick(&mut self, action_queue: &[ActionEvent]) {
         self.old_values = self.new_values;
 
+        // TODO: Handle this properly...
+        self.new_values[Action::CameraZoom as usize] = 0.0;
+
         for event in action_queue {
             self.new_values[event.action as usize] = event.value;
         }
@@ -156,6 +164,9 @@ impl CameraState {
     }
 
     pub fn tick(&mut self, actions: &Actions, target: Point3, time: f32, delta_time: f32) {
+        self.distance += actions.value(Action::CameraZoom);
+        self.distance = self.distance.clamp(1.0, 100.0);
+
         let movement_bitmap = actions.is_active(Action::CameraUp) as usize
             | (actions.is_active(Action::CameraDown) as usize) << 1
             | (actions.is_active(Action::CameraLeft) as usize) << 2
@@ -165,11 +176,10 @@ impl CameraState {
         const DOWN: Vec2 = vec2(0.0, -1.0);
         const LEFT: Vec2 = vec2(-1.0, 0.0);
         const RIGHT: Vec2 = vec2(1.0, 0.0);
-        //SQRT_2 / 2.0
-        const UP_LEFT: Vec2 = vec2(1.0, 0.0);
-        const UP_RIGHT: Vec2 = vec2(0.0, 1.0);
-        const DOWN_LEFT: Vec2 = vec2(0.0, -1.0);
-        const DOWN_RIGHT: Vec2 = vec2(-1.0, 0.0);
+        const UP_LEFT: Vec2 = vec2(-SQRT_2 / 2.0, SQRT_2 / 2.0);
+        const UP_RIGHT: Vec2 = vec2(SQRT_2 / 2.0, SQRT_2 / 2.0);
+        const DOWN_LEFT: Vec2 = vec2(-SQRT_2 / 2.0, -SQRT_2 / 2.0);
+        const DOWN_RIGHT: Vec2 = vec2(SQRT_2 / 2.0, -SQRT_2 / 2.0);
 
         let movement = [
             // 0 0 0 0
diff --git a/title/shark/src/main.rs b/title/shark/src/main.rs
index 4d340fd..58e0ff3 100644
--- a/title/shark/src/main.rs
+++ b/title/shark/src/main.rs
@@ -177,6 +177,18 @@ pub fn main() {
                                 action_queue.push(ActionEvent { action, value })
                             }
                         }
+                        MouseWheel {
+                            window_id: _,
+                            x: _,
+                            y,
+                        } => {
+                            if y != 0.0 {
+                                action_queue.push(ActionEvent {
+                                    action: Action::CameraZoom,
+                                    value: y,
+                                });
+                            }
+                        }
                         ScaleChanged { window_id: _ } => {
                             window_display_scale = window.display_scale()
                         }