From a953273e8069251d43e1c9464792fb70bebe8f57 Mon Sep 17 00:00:00 2001
From: Federico Igne <git@federicoigne.com>
Date: Fri, 4 Nov 2022 22:34:34 +0000
Subject: feat: add waypoints with movement animation and particle effect

---
 raccoon.lua | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 67 insertions(+), 1 deletion(-)

diff --git a/raccoon.lua b/raccoon.lua
index 5a3c648..c777c1d 100644
--- a/raccoon.lua
+++ b/raccoon.lua
@@ -228,6 +228,12 @@ function Movement:is_moving()
     return self.cur.x ~= 0 or self.cur.y ~= 0
 end
 
+local Pixel = Component()
+function Pixel:init(c)
+    self.color = c
+    return self
+end
+
 local Sprite = Component()
 function Sprite:init(i)
     self.i = i
@@ -284,6 +290,32 @@ function CircleEffect:draw(x,y)
     circb(x,y,self.r1,self.color)
 end
 
+local PosAnim = Component()
+function PosAnim:init(f,d)
+    self.t = 0
+    self.d = d
+    self.f = f
+    return self
+end
+
+local Particles = Component()
+function Particles:init(d)
+    self.t = 0
+    self.d = d
+    self.parts = {}
+    return self
+end
+function Particles:spawn(pos, entities)
+    if math.random(10) == 1 then
+        local offset = math.random(7) -- TODO change to pos.width once implemented
+        local speed = 0.2 + math.random()
+        table.insert(entities,
+            Entity():with_component(Pixel(12))
+                    :with_component(Pos(pos.x + offset,pos.y))
+                    :with_component(PosAnim(function(t,p) p.y = p.y - speed end, 10)))
+    end
+end
+
 local InputSystem = System(Input)
 function InputSystem:exec(entity)
     local input = entity.get_component[Input]
@@ -403,7 +435,10 @@ end
 local DrawingSystem = System(Pos)
 function DrawingSystem:exec(entity,level)
     local x, y = entity.get_component[Pos]:to_screen(level)
-    if entity.has_component[Sprite] then
+    if entity.has_component[Pixel] then
+        local c = entity.get_component[Pixel].color
+        pix(x, y, c)
+    elseif entity.has_component[Sprite] then
         local sprite = entity.get_component[Sprite]
         spr(sprite.i, x, y, 0)
     end
@@ -471,6 +506,28 @@ function EffectSystem:exec(entity)
      end
 end
 
+local PosAnimSystem = System(Pos, PosAnim)
+function PosAnimSystem:exec(entity)
+    local pos = entity.get_component[Pos]
+    local anim = entity.get_component[PosAnim]
+    anim.f(anim.t, pos)
+    anim.t = anim.t + 1
+    if anim.d and anim.t > anim.d then
+        return true--, {anim}
+    end
+end
+
+local ParticlesSystem = System(Pos, Particles)
+function ParticlesSystem:exec(entity, game)
+    local pos = entity.get_component[Pos]
+    local parts = entity.get_component[Particles]
+    parts:spawn(pos,game.entities)
+    parts.t = parts.t + 1
+    if parts.d and parts.t > parts.d then
+        return true, {parts}
+    end
+end
+
 local player = Entity()
     :with_component(Pos(100,10))
     :with_component(Movement())
@@ -491,6 +548,12 @@ local level1_entities = {
     Entity():with_component(Pos(16*8,11*8)):with_component(Sprite(272)),
     Entity():with_component(Pos(47*8, 8*8)):with_component(Sprite(272)),
     Entity():with_component(Pos(85*8, 7*8)):with_component(Sprite(272)),
+    -- Waypoints
+    Entity():with_component(Pos(15*8,11*8)):with_component(Sprite(288))
+            :with_component(PosAnim(function(t,p) p.y = p.y - math.sin(t/6)/3 end))
+            :with_component(Particles()),
+    Entity():with_component(Pos(48*8, 8*8)):with_component(Sprite(288))
+            :with_component(PosAnim(function(t,p) p.y = p.y - math.sin(t/6)/3 end)),
 }
 
 -- TODO turn this into something more structured, containing everything related
@@ -514,6 +577,8 @@ function TIC()
     MovementSystem:run(game.entities)
     ActionSystem:run(game.entities, game)
     EffectSystem:run(game.entities)
+    PosAnimSystem:run(game.entities)
+    ParticlesSystem:run(game.entities, game)
     LevelSystem:run(game.levels, game)
 
     DrawingSystem:draw(game)
@@ -534,6 +599,7 @@ end
 -- <SPRITES>
 -- 000:0000000000777700077777000740400000444400022222200488884000800800
 -- 016:0003330000044300000444000007770000077600004774000008840000080800
+-- 032:0222220022ccc2202ccccc202ccccc2022ccc220022222000022200000020000
 -- </SPRITES>
 
 -- <MAP>
-- 
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