From 87b6a8469bdd9e3a09aa6a16c1a0fa8c9867c5bf Mon Sep 17 00:00:00 2001
From: Ivan Yuriev <ivanyr44@gmail.com>
Date: Sat, 19 Apr 2025 03:15:47 +0300
Subject: [PATCH] camera follows mouse

---
 lib/camera.lua | 18 ++++++++++++++----
 main.lua       |  3 +--
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/lib/camera.lua b/lib/camera.lua
index bfbcfc9..86dde39 100644
--- a/lib/camera.lua
+++ b/lib/camera.lua
@@ -1,13 +1,23 @@
 Camera = {
     target = Vec3 {},
     position = Vec3 {},
-    lerp_speed = 5.0
+    lerp_speed = 5.0,
+    max_offset = 1,         -- на сколько метров камера может отдалиться от целевой позиции
+    max_offset_distance = 5 -- на сколько метров надо отвести мышь для максимального отдаления камеры
 }
 
 function Camera:update(dt)
     if not self.target then return end
 
-    -- Плавное движение камеры к цели
-    local to_target = self.target - self.position
-    self.position = self.position + to_target:scale(dt * self.lerp_speed)
+    local mx, my = love.mouse.getPosition()
+    local screen_center = Vec3 { love.graphics.getWidth() / 2, love.graphics.getHeight() / 2, 0 }
+    local mouse_offset = Vec3 { mx, my, 0 } - screen_center
+    local offset_distance = mouse_offset:length() / PIXELS_PER_METER
+    if offset_distance > self.max_offset_distance then offset_distance = self.max_offset_distance end
+
+    local adjusted_target = self.target +
+    mouse_offset:normalize() * (self.max_offset * offset_distance / self.max_offset_distance)
+
+    local to_target = adjusted_target - self.position
+    self.position = self.position + to_target * (dt * self.lerp_speed)
 end
diff --git a/main.lua b/main.lua
index 93a749e..2ded9c4 100644
--- a/main.lua
+++ b/main.lua
@@ -98,8 +98,7 @@ function love.draw()
 
     love.graphics.setCanvas()
 
-    local scale = math.min(love.graphics.getDimensions()) / (15 * PIXELS_PER_METER);
-    love.graphics.draw(spriteCanvas, 0, 0, 0, scale, scale)
+    love.graphics.draw(spriteCanvas)
 
     love.graphics.setColor(1, 1, 1, 1)
 end