From e9396447537e0c6dedfb55e9a7ffc1e99575d860 Mon Sep 17 00:00:00 2001 From: Aki Date: Thu, 6 Apr 2017 20:06:12 +0200 Subject: Camera moved to /not/ and cleaned-up a bit --- not/Camera.lua | 145 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 145 insertions(+) create mode 100644 not/Camera.lua (limited to 'not') diff --git a/not/Camera.lua b/not/Camera.lua new file mode 100644 index 0000000..63489f3 --- /dev/null +++ b/not/Camera.lua @@ -0,0 +1,145 @@ +--- `Camera` +-- Used in drawing. +Camera = { + x = 0, + y = 0, + dest_x = 0, + dest_y = 0, + scale = getScale(), + scaler = getRealScale(), + shake = 0, + timer = 0, + delay = 0, + origin_x = 0, + origin_y = 0, + shake_x = 0, + shake_y = 0, + world = --[[not.World]]nil, +} + +-- Constructor of `Camera` +function Camera:new (world) + local o = {} + setmetatable(o, self) + self.__index = self + o.world = world + o:setPosition(o:follow()) + o:setDestination(o:follow()) + return o +end + +-- Drawing offsets +function Camera:getOffsets () + return -self.x,-self.y +end + +-- Position +function Camera:setPosition (x, y) + local x = x or 0 + local y = y or 0 + self.x, self.y = x, y +end + +function Camera:getPosition () + return self.x, self.y +end + +function Camera:getPositionScaled () + return self.x*self.scale, self.y*self.scale +end + +-- Destination +function Camera:setDestination (x, y) + local x = x or 0 + local y = y or 0 + self.dest_x, self.dest_y = x, y +end + +function Camera:getDestination () + return self.dest_x, self.dest_y +end + +-- Translate points +function Camera:translatePosition (x, y) + local x = x or 0 + local y = y or 0 + return (x-self.x)*self.scale, (y-self.y)*self.scale +end + +function Camera:translatePoints(...) + local a = {...} + local r = {} + local x,y = self:getOffsets() + for k,v in pairs(a) do + if k%2 == 1 then + table.insert(r, (v + x) * self.scale) + else + table.insert(r, (v + y) * self.scale) + end + end + return r +end + +-- Shake it +-- Really bad script, but for now it works +function Camera:shake () + if self.shake_x == 0 then + self.shake_x = math.random(-10, 10) * 2 + elseif self.shake_x > 0 then + self.shake_x = math.random(-10, -1) * 2 + elseif self.shake_x < 0 then + self.shake_x = math.random(10, 1) * 2 + end + if self.shake_y == 0 then + self.shake_y = math.random(-10, 10) * 2 + elseif self.shake_y > 0 then + self.shake_y = math.random(-10, -1) * 2 + elseif self.shake_y < 0 then + self.shake_y = math.random(10, 1) * 2 + end + local x = self.origin_x + self.shake_x + local y = self.origin_y + self.shake_y + self:setDestination(x, y) +end + +function Camera:startShake () + self.timer = 0.3 + self.origin_x, self.origin_y = self:getPosition() +end + +-- Move follow +function Camera:follow () + local map = self.world.map + local sum_x,sum_y,i = map.center_x, map.center_y, 1 + for k,naut in pairs(self.world.Nauts) do + local naut_x,naut_y = naut:getPosition() + if math.abs(naut_x - map.center_x) < map.width/2 and + math.abs(naut_y - map.center_y) < map.height/2 then + i = i + 1 + sum_x = naut_x + sum_x + sum_y = naut_y + sum_y + end + end + local x = sum_x / i - love.graphics.getWidth()/self.scale/2 + local y = sum_y / i - love.graphics.getHeight()/self.scale/2 + 4*self.scale -- hotfix + return x,y +end + +-- Update +function Camera:update (dt) + if self.timer > 0 then + self.timer = self.timer - dt + if self.delay <= 0 then + self:shake() + self.delay = 0.02 + else + self.delay = self.delay - dt + end + else + self:setDestination(self:follow()) + end + local dx, dy = self:getDestination() + dx = (dx - self.x) * 6 * dt + dy = (dy - self.y) * 6 * dt + self:setPosition(self.x + dx, self.y + dy) +end -- cgit v1.1