Merge pull request #22 from Ewpratten/camera-movement

Camera movement

game/dist/project-constants.json

@@ -20,6 +20,7 @@
     "player": {
         "max_velocity": 3,
         "acceleration": 2,
-        "deceleration": 1
+        "deceleration": 1,
+        "start_size": 0.8
     }
 }

game/game_logic/src/project_constants.rs

@@ -40,6 +40,9 @@ pub struct PlayerConstants {
 
     /// Deceleration, tiles per second per second
     pub deceleration: u32,
+
+    /// Starting size of player in tiles
+    pub start_size: f32,
 }
 
 /// This structure is filled with the contents of `dist/project-constants.json` at runtime

game/game_logic/src/scenes/player_interaction.rs

@@ -81,33 +81,48 @@ impl PlayableScene {
 
         // Clear the screen
         draw.clear_background(Color::WHITE);
+        
+        self.draw_world(&mut draw, constants);
 
-        {
-            // Begin camera mode
-            let mut ctx2d = draw.begin_mode2D(self.camera);
+        self.draw_ui(&mut draw, constants);
+    }
 
-            // Render the map
-            self.world_map.render_map(&mut ctx2d, &self.camera, true);
-        }       
+    pub fn draw_world(
+        &mut self,
+        draw: &mut RaylibDrawHandle,
+        constants: &ProjectConstants,
+    ) {
+        // Begin camera mode
+        let mut ctx2d = draw.begin_mode2D(self.camera);
 
-        for i in 0..100 {
-            for j in 0..100 {
-                draw.draw_rectangle(
-                    constants.tile_size as i32 * (i * 2),
-                    constants.tile_size as i32 * (j * 2) * -1,
-                    constants.tile_size as i32,
-                    constants.tile_size as i32,
-                    Color::RED
-                )
-            }
-        }    
+        // Render the map
+        self.world_map.render_map(&mut ctx2d, &self.camera, true);
+       
+        let player_size = (constants.tile_size as f32 * constants.player.start_size * self.player.size) as i32;
 
+        ctx2d.draw_rectangle(
+            self.player.position[0] as i32 - player_size / 2, 
+            self.player.position[1] as i32 * -1 - player_size / 2,
+            player_size,
+            player_size,
+            Color::LIGHTBLUE
+        );
+    }
+
+    pub fn draw_ui(
+        &mut self,
+        draw: &mut RaylibDrawHandle,
+        constants: &ProjectConstants,
+    ) {
         draw.draw_rectangle(
-            self.player.position[0] as i32, 
-            self.player.position[1] as i32 * -1,
-            (constants.tile_size as f32 * self.player.size) as i32, 
-            (constants.tile_size as f32 * self.player.size) as i32, 
-            Color::GREEN
+            draw.get_screen_width() / 2 - 225, 0, 
+            450, 40,
+            Color::WHITE
+        );
+        draw.draw_text(
+           "Unregistered HyperCam 2",
+           draw.get_screen_width() / 2 - 215, 0, 
+           32, Color::BLACK
         );
     }
         
@@ -143,7 +158,7 @@ impl PlayableScene {
                 * constants.player.deceleration as f32 
                 * constants.tile_size as f32 
                 * delta_time;
-            if player.velocity.magnitude() < 0.01 {
+            if player.velocity.magnitude() < 1.0 {
                 player.velocity.set_magnitude(0.0);
             }
         }
@@ -154,6 +169,18 @@ impl PlayableScene {
         }
 
         player.position += &player.velocity * delta_time;
+
+        self.update_camera(raylib);
+    }
+
+    pub fn update_camera(
+        &mut self, 
+        raylib: & raylib::RaylibHandle,
+    ) {
+        self.camera.target = self.player.position.into();
+        self.camera.target.y *= -1.0;
+        self.camera.offset.x = raylib.get_screen_width() as f32 / 2.0;
+        self.camera.offset.y = raylib.get_screen_height() as f32 / 2.0;
     }
 }