import os

class Graphics():
    def load_assets(self):
        self.tunnel = self.render_engine.load_image("Rat/BMP_TUNNEL.png", surface=True)
        self.grasses = [self.render_engine.load_image(f"Rat/BMP_1_GRASS_{i+1}.png", surface=True) for i in range(4)]
        self.rat_assets = {}
        self.bomb_assets = {}
        for sex in ["MALE", "FEMALE", "BABY"]:
            self.rat_assets[sex] = {}
            for direction in ["UP", "DOWN", "LEFT", "RIGHT"]:
                self.rat_assets[sex][direction] = self.render_engine.load_image(f"Rat/BMP_{sex}_{direction}.png", transparent_color=(128, 128, 128))
        for n in range(5):
            self.bomb_assets[n] = self.render_engine.load_image(f"Rat/BMP_BOMB{n}.png", transparent_color=(128, 128, 128))
        self.assets = {}
        for file in os.listdir("assets/Rat"):
            if file.endswith(".png"):
                self.assets[file[:-4]] = self.render_engine.load_image(f"Rat/{file}")


    # ==================== RENDERING ====================

    def draw_maze(self):
        if self.background_texture is None:
            
            texture_tiles = []
            for y, row in enumerate(self.map.matrix):
                for x, cell in enumerate(row):
                    variant = x*y % 4
                    tile = self.grasses[variant] if cell else self.tunnel
                    texture_tiles.append((tile, x*self.cell_size, y*self.cell_size))
            self.background_texture = self.render_engine.create_texture(texture_tiles)
        self.render_engine.draw_background(self.background_texture)
        
    def scroll_cursor(self, x=0, y=0):
        if self.pointer[0] + x > self.map.width or self.pointer[1] + y > self.map.height:
            return
        
        self.pointer = (
            max(1, min(self.map.width-2, self.pointer[0] + x)),
            max(1, min(self.map.height-2, self.pointer[1] + y))
        )
        self.render_engine.scroll_view(self.pointer)