From a3a4040662f6a562d59e2b25462c63aeab99b87f Mon Sep 17 00:00:00 2001
From: Eltrac <hi@guhub.cn>
Date: Sat, 22 Feb 2025 11:04:38 +0800
Subject: feat: enemy gets blocked by walls and obstacles

---
 objects/Enemy.lua | 32 +++++++++++++++++++++++---------
 1 file changed, 23 insertions(+), 9 deletions(-)

(limited to 'objects/Enemy.lua')

diff --git a/objects/Enemy.lua b/objects/Enemy.lua
index 05990f1..b61e3b5 100644
--- a/objects/Enemy.lua
+++ b/objects/Enemy.lua
@@ -16,16 +16,30 @@ function Enemy:new(name, location)
     return obj
 end
 
+function Enemy:isBlocked()
+
+end
+
 function Enemy:moveTowardPlayer(dt)
-    if self.x < G.player.x then
-        self.x = self.x + self.speed*dt
-    elseif self.x > G.player.x then
-        self.x = self.x - self.speed*dt
-    end
+    local dv = self.speed * dt
+    local dx, dy = 0, 0
 
-    if self.y < G.player.y then
-        self.y = self.y + self.speed*dt
-    elseif self.y > G.player.y then
-        self.y = self.y - self.speed*dt
+    local function getDirection(axis, playerPos, direction, blockAxis)
+        if self[axis] < playerPos then
+            if not utils.isBlocked(self.body, self.x, self.y, direction, blockAxis, dv) then
+                return 1
+            end
+        elseif self[axis] > playerPos then
+            if not utils.isBlocked(self.body, self.x, self.y, direction, blockAxis, dv) then
+                return -1
+            end
+        end
+        return 0
     end
+
+    dx = getDirection("x", G.player.x, Direction.RIGHT, "x")
+    dy = getDirection("y", G.player.y, Direction.DOWN, "y")
+
+    self.x = self.x + dx * dv
+    self.y = self.y + dy * dv
 end
-- 
cgit v1.2.3