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Merge pull request #25 from Ewpratten/camera-movement

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Camera Follow Deadzone
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Evan Pratten 2022-04-02 20:22:07 -04:00 committed by GitHub
commit 64a59daf8b
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 50 additions and 10 deletions
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60
game/game_logic/src/scenes/player_interaction.rs
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@ -44,13 +44,16 @@ impl PlayableScene {
Self { Self {
has_updated_discord_rpc: false, has_updated_discord_rpc: false,
player: Player::new(na::Vector2::new(10.0, 10.0)), player: Player::new(na::Vector2::new(10.0 * constants.tile_size as f32, -10.0 * constants.tile_size as f32)),
world_map: map_renderer, world_map: map_renderer,
camera: raylib::camera::Camera2D { camera: raylib::camera::Camera2D {
target: raylib::math::Vector2 { x: 0.0, y: 0.0 }, target: raylib::math::Vector2 {
offset: raylib::math::Vector2 { x: 0.0,
x: (constants.base_window_size.0 as f32 / 2.0), y: 0.0,
y: (constants.base_window_size.1 as f32 / 2.0), },
offset: raylib::math::Vector2 {
x: 0.0,
y: 0.0
}, },
rotation: 0.0, rotation: 0.0,
zoom: 1.0, zoom: 1.0,
@ -193,10 +196,47 @@ impl PlayableScene {
self.update_camera(raylib); self.update_camera(raylib);
} }
pub fn update_camera(&mut self, raylib: &raylib::RaylibHandle) { // Update the camera
self.camera.target = self.player.position.into(); pub fn update_camera(
self.camera.target.y *= -1.0; &mut self,
self.camera.offset.x = raylib.get_screen_width() as f32 / 2.0; raylib: & raylib::RaylibHandle,
self.camera.offset.y = raylib.get_screen_height() as f32 / 2.0; ) {
// Bounding box
let bbox = na::Vector2::new(0.2, 0.2);
// Get bounding box dimensions on the screen
let bbox_screen_min: raylib::math::Vector2 = (((na::Vector2::new(1.0, 1.0) - bbox) * 0.5).component_mul(
&na::Vector2::new(raylib.get_screen_width() as f32, raylib.get_screen_height() as f32)
)).into();
let bbox_screen_max: raylib::math::Vector2 = (((na::Vector2::new(1.0, 1.0) + bbox) * 0.5).component_mul(
&na::Vector2::new(raylib.get_screen_width() as f32, raylib.get_screen_height() as f32)
)).into();
// Get bounding box in world space
let mut bbox_world_min = raylib.get_screen_to_world2D(bbox_screen_min, self.camera);
let mut bbox_world_max = raylib.get_screen_to_world2D(bbox_screen_max, self.camera);
// Invert y
bbox_world_min.y *= -1.0;
bbox_world_max.y *= -1.0;
self.camera.offset = bbox_screen_min;
if self.player.position.x < bbox_world_min.x {
self.camera.target.x = self.player.position.x;
}
if self.player.position.y > bbox_world_min.y {
self.camera.target.y = -self.player.position.y;
}
if self.player.position.x > bbox_world_max.x {
self.camera.target.x = bbox_world_min.x + (self.player.position.x - bbox_world_max.x);
}
if self.player.position.y < bbox_world_max.y {
self.camera.target.y = bbox_world_max.y - (self.player.position.y + bbox_world_min.y);
}
} }
} }