From 59bac8bb2342058bba91f017aea2f96783194acd Mon Sep 17 00:00:00 2001
From: Ivan Yuriev <ivanyr44@gmail.com>
Date: Sun, 3 Aug 2025 20:48:39 +0300
Subject: [PATCH] better camera zoom

---
 lib/camera.lua | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/lib/camera.lua b/lib/camera.lua
index 524e4b0..7a69072 100644
--- a/lib/camera.lua
+++ b/lib/camera.lua
@@ -7,19 +7,29 @@ local EPSILON = 0.001
 --- @field velocity Vec3
 --- @field speed number
 --- @field pixelsPerMeter integer
+--- @field scale number
 local camera = {
     position = Vec3 {},
     velocity = Vec3 {},
     acceleration = 0.2,
     speed = 5,
     pixelsPerMeter = 24,
-    scale = 2
 }
 
+function camera:getDefaultScale()
+    return love.window.getDesktopDimensions() /
+        (self.pixelsPerMeter * 30) -- 30 meters wide regardless of the actual screen size
+end
+
+camera.__index = camera
+camera.scale = camera:getDefaultScale()
+
+---------------------------------------------------
+
 love.wheelmoved = function(x, y)
-    if camera.scale > 50 and y > 0 then return end;
-    if camera.scale < 0.005 and y < 0 then return end;
-    camera.scale = camera.scale + 0.1 * y
+    if camera.scale > camera:getDefaultScale() * 5 and y > 0 then return end;
+    if camera.scale < camera:getDefaultScale() / 5 and y < 0 then return end;
+    camera.scale = camera.scale + (camera.scale * 0.1 * y)
 end
 
 ---@todo Отрефакторить и вынести кнопки управления в controls, не должно быть таких ужасных проверок
@@ -61,9 +71,8 @@ end
 
 --- @return Camera
 local function new()
-    return setmetatable({}, {
-        __index = camera
-    })
+    return setmetatable({
+    }, camera)
 end
 
 return { new = new }