added now functional cannon needs projectiles (and alot more)

game/enemy.py

@@ -2,7 +2,7 @@ from game.util import *
 import pygame as pg
 import math
 
-class Enemy(pg.sprite.Group):
+class Enemy(pg.sprite.Sprite):
     def __init__(self, game, speed, health):
         super().__init__()
         self.game = game
@@ -23,6 +23,12 @@ class Enemy(pg.sprite.Group):
 
         self.rect.center = self.pos
 
+        self.healthbar = HealthBar(
+            18,
+            5,
+            self.health
+        )
+
     def update(self):
         self.move()
         self.rotate()    
@@ -71,4 +77,51 @@ class Enemy(pg.sprite.Group):
         scaled_pos = camera.world_to_screen(self.pos)
         scaled_rect.center = scaled_pos
 
-        surf.blit(scaled_image, scaled_rect)
+        surf.blit(scaled_image, scaled_rect)
+        self.healthbar.render(
+            surf,
+            camera,
+            self.pos,
+            self.rect.height
+        )
+    
+    def take_damage(self, amount):
+        self.health -= amount
+        self.healthbar.hp = self.health
+        if self.health <= 0:
+            self.kill()
+
+class EnemyGroup(pg.sprite.Group):
+    def render(self, surf, camera):
+        for enemy in self.sprites():
+            enemy.render(surf, camera)
+    
+    def update(self):
+        for enemy in self.sprites():
+            enemy.update()
+
+class HealthBar():
+    def __init__(self, w, h, max_hp):
+        self.w = w
+        self.h = h
+        self.hp = max_hp
+        self.max_hp = max_hp
+
+    def render(self, surf, camera, pos, enemy_height):
+        ratio = self.hp / self.max_hp
+
+        world_pos = (
+            pos.x - self.w / 2,
+            pos.y + enemy_height / 2 -20
+        )
+
+        screen_pos = camera.world_to_screen(world_pos)
+
+        scaled_w = self.w * camera.zoom
+        scaled_h = self.h * camera.zoom
+
+        bg_rect = pg.Rect(screen_pos[0], screen_pos[1], scaled_w, scaled_h)
+        fg_rect = pg.Rect(screen_pos[0], screen_pos[1], scaled_w * ratio, scaled_h)
+
+        pg.draw.rect(surf, "red", bg_rect)
+        pg.draw.rect(surf, "green", fg_rect)

game/game.py

@@ -31,7 +31,7 @@ class Game:
             "enemy": load_image('/entities/enemies/enemy.png'),
             "cannon": load_image('/entities/towers/cannon/shoot/0.png'),
             "red_cannon": load_image('/entities/towers/cannon/red_cannon.png'),
-            "cannon/shoot": Animation(load_images('/entities/towers/cannon/shoot'), 10, False)
+            "cannon/shoot": Animation(load_images_alpha('/entities/towers/cannon/shoot'), 10, False)
         }
 
         self.screens = {

game/screens/game_play.py

@@ -1,5 +1,5 @@
 from game.screens.base_screen import BaseScreen
-from game.enemy import Enemy
+from game.enemy import Enemy, EnemyGroup
 from game.camera import Camera
 from game.tower import Tower, TowerGroup
 from game.util import *
@@ -29,10 +29,11 @@ class GamePlay(BaseScreen):
         except FileNotFoundError:
             print('File not Found')
 
-        self.enemy_group = pg.sprite.Group()
+        self.enemy_group = EnemyGroup()
         self.tower_group = TowerGroup()
 
-        self.enemy = Enemy(self.game, 0.5, 100)
+        self.enemy = Enemy(self.game, 0.5, 200)
+        self.enemy_group.add(self.enemy)
 
         self.buy_button = pgi.elements.UIButton(
             relative_rect=pg.Rect(
@@ -134,8 +135,8 @@ class GamePlay(BaseScreen):
                 self.movment[3] = False
     
     def update(self, dt):
-        self.enemy.update()
+        self.enemy_group.update()
-        self.tower_group.update("sigma")
+        self.tower_group.update(self.enemy_group)
 
         self.camera.move((self.movment[1] - self.movment[0]) * 2, (self.movment[3] - self.movment[2]) * 2)
 
@@ -145,7 +146,7 @@ class GamePlay(BaseScreen):
 
         self.game.tilemap.render_game(self.game_surface, self.camera)
 
-        self.enemy.render(self.game_surface, self.camera)
+        self.enemy_group.render(self.game_surface, self.camera)
         self.tower_group.render(self.game_surface, self.camera)
 
         if self.bought:

game/tower.py

@@ -1,5 +1,6 @@
 import pygame as pg
 from game.util import *
+import math
 
 class Tower(pg.sprite.Sprite):
     def __init__(self, game, pos, tile_pos, type, range, level=1):
@@ -12,6 +13,12 @@ class Tower(pg.sprite.Sprite):
 
         self.range = range
         self.selected = False
+        self.angle = 0
+        self.target = None
+
+        self.fire_rate = 180      # frames between shots — tune to taste
+        self.fire_cooldown = 0
+        self.damage = 50
 
         self.pos = pos
         self.tile_pos = tile_pos
@@ -19,8 +26,17 @@ class Tower(pg.sprite.Sprite):
         self.action = ""
         self.set_action('shoot')
 
-    def update(self, enemies):
+    def update(self, enemy_group):
         self.animation.update()
+        self.pick_target(enemy_group)
+        self.rotate()
+
+        if self.fire_cooldown > 0:
+            self.fire_cooldown -= 1
+
+        if self.target is not None and self.fire_cooldown == 0:
+            print("shoot fired")
+            self.shoot()
 
     def set_action(self, action):
         if action != self.action:
@@ -33,15 +49,16 @@ class Tower(pg.sprite.Sprite):
         ))
 
         anim_img = self.animation.img()
+        rotated_img = pg.transform.rotate(anim_img, self.angle)
         scaled_image = pg.transform.scale(
-          anim_img,
+          rotated_img,
             (
-                int(anim_img.get_width() * camera.zoom),
+                int(rotated_img.get_width() * camera.zoom),
-                int(anim_img.get_height() * camera.zoom)
+                int(rotated_img.get_height() * camera.zoom)
             )
         )
 
-        rect = scaled_image.get_rect(center=screen_pos)
+        self.rect = scaled_image.get_rect(center=screen_pos)
 
         if self.selected:
             scaled_range = int(self.range * camera.zoom)
@@ -50,7 +67,40 @@ class Tower(pg.sprite.Sprite):
             range_rect = range_surf.get_rect(center=screen_pos)
             surf.blit(range_surf, range_rect)
 
-        surf.blit(scaled_image, rect)
+        surf.blit(scaled_image, self.rect)
+    
+    def rotate(self):
+        if self.target is None:
+            # print("no target")
+            return  # keep last angle, or reset to a default — your call
+
+        tower_world_pos = pg.Vector2(
+            tile_to_pixel(self.tile_pos, self.game.tilemap.tile_size, True)
+        )
+        direction = self.target.pos - tower_world_pos
+        self.angle = math.degrees(math.atan2(-direction[1], direction[0])) -90
+        # print(f"angle {self.angle}")
+        
+    def pick_target(self, enemy_group):
+        closest = None
+        closest_dist = float('inf')
+
+        tower_world_pos = pg.Vector2(
+            tile_to_pixel(self.tile_pos, self.game.tilemap.tile_size, True)
+        )
+
+        for enemy in enemy_group:
+            distance = tower_world_pos.distance_to(enemy.pos)
+            if distance <= self.range and distance < closest_dist:
+                closest = enemy
+                closest_dist = distance
+
+        self.target = closest  # explicitly None if nothing in range
+    
+    def shoot(self):
+        self.target.take_damage(self.damage)
+        self.animation.play_animation()
+        self.fire_cooldown = self.fire_rate
 
 class TowerGroup(pg.sprite.Group):
     def render(self, surf, camera):

game/util.py

@@ -15,6 +15,16 @@ def load_images(dir_path):
         images.append(load_image(dir_path + '/' + img_name))
     return images
 
+def load_image_alpha(path):
+    img = pg.image.load(img_path + path).convert_alpha()
+    return img
+
+def load_images_alpha(dir_path):
+    images = []
+    for img_name in os.listdir(img_path + dir_path):
+        images.append(load_image_alpha(dir_path + '/' + img_name))
+    return images
+
 def tile_to_pixel(waypoint, tile_size, center=False):
     if center:
         return (
@@ -40,17 +50,27 @@ class Animation:
         self.img_duration = img_dur
         self.done = False
         self.frame = 0
+        self.playing = False  # not playing until told to
 
     def copy(self):
         return Animation(self.images, self.img_duration, self.loop)
     
     def update(self):
+        if not self.playing:
+            return
+
         if self.loop:
             self.frame = (self.frame + 1) % (self.img_duration * len(self.images))
         else:
-            self.frame = min(self.frame + 1, self.img_duration * len(self.images))
+            self.frame = min(self.frame + 1, self.img_duration * len(self.images) - 1)
             if self.frame >= self.img_duration * len(self.images) - 1:
                 self.done = True
+                self.playing = False
+
+    def play_animation(self):
+        self.playing = True
+        self.done = False
+        self.frame = 0
     
     def img(self):
-        return self.images[int(self.frame / self.img_duration) - 1]
+        return self.images[self.frame // self.img_duration]