rendering.py

import pygame
import os
import tiles
import CONSTANTS
from math import floor, ceil
import player
import CONSTANTS
import enemy
import animation
import hud
import os
import effects
import button

global image_cache
image_cache = {}

def get_image(key):
    if not key in image_cache:
        image_cache[key] = pygame.image.load(os.path.join(key)).convert_alpha()
        # image_cache[key] = pygame.image.load(os.path.join(tiles.tiles[key]))
    return image_cache[key]

def render_frame(window, gameObjects, gameOver, state):
    
    # check if player health is zero
    if state.hearts <= 0:
        state.gameOver = True
        print("game over")
        while state.gameOver:
            GAMEOVER_MOUSE_POS = pygame.mouse.get_pos()
            font = pygame.font.Font("assets/intro/font.ttf", 64)
            gameOverText = font.render('Game Over :(', False, (100, 0, 0))
            gameOverRect = gameOverText.get_rect(center=(window.get_width() // 2, window.get_height() // 2))
            window.blit(gameOverText, gameOverRect)
            gameOverButton = button.Button(base_color=(255,255,255), font=font,hovering_color=(200,200,200), image=None, pos=(window.get_width() // 2, window.get_height() // 2 * 1.4), text_input="Restart")
            gameOverButton.changeColor(GAMEOVER_MOUSE_POS)
            gameOverButton.update(window)

            for event in pygame.event.get():
                if event.type == pygame.MOUSEBUTTONDOWN:
                    if gameOverButton.checkForInput(GAMEOVER_MOUSE_POS):
                        state.resetVars()

            pygame.display.update()

    animation.tileAnimations(state)
    draw_grid(gameObjects, state)

    # Draw enemies on the board
    if state.newLevel == False:
        [enemy.move(state) for enemy in state.enemies]
    draw_enemies(gameObjects, state)

    if state.newLevel == False:
        if state.attacking:
            player.attack(gameObjects, state)
        player.drawPlayer(gameObjects, state)
    else:
        player.newLevel(gameObjects, state)
    
    effects.effectEvent(state)
    draw_effects(gameObjects, state)

    # Move all gameObjects based on the player position 
    camera(window, gameObjects, state)

    hud.draw_hud(window, state)
    
    pygame.display.update()

def clear_surface(window):
    window.fill(CONSTANTS.BACKGROUND_COLOR)

def draw_grid(gameObjects, state):
    """
    leftBound = max(0, floor(((state.x - CONSTANTS.SCREEN_SIZE[0])/2 / CONSTANTS.PIXELS)))
    rightBound = min(len(CONSTANTS.MAP[0]), floor(((state.x)/2 - CONSTANTS.SCREEN_SIZE[0] / CONSTANTS.PIXELS)))

    topBound = max(0, floor(((state.y - CONSTANTS.SCREEN_SIZE[1])/2 / CONSTANTS.PIXELS)))
    bottomBound = min(len(CONSTANTS.MAP), floor(((state.y) - CONSTANTS.SCREEN_SIZE[1]/2 / CONSTANTS.PIXELS)))
    """
    leftBound = max(0, floor(state.x/CONSTANTS.PIXELS) - CONSTANTS.BOUND)
    topBound = max(0, floor(state.y/CONSTANTS.PIXELS) - CONSTANTS.BOUND)
    bottomBound = min(len(CONSTANTS.MAP), floor(state.y/CONSTANTS.PIXELS) + CONSTANTS.BOUND)
    rightBound = min(max([len(y) for y in CONSTANTS.MAP]), floor(state.x/CONSTANTS.PIXELS) + CONSTANTS.BOUND)

    for y in range(topBound, bottomBound):
        for x in range(leftBound, rightBound):
            try:
                image = get_image(tiles.tiles[CONSTANTS.MAP[y][x]])
                gameObjects.blit(image, (CONSTANTS.PIXELS * x , CONSTANTS.PIXELS * y))
            except:
                pass


def camera(window, gameObjects, state):
    # Move every gameObject on the screen relative to the player position
    window.blit(gameObjects, (CONSTANTS.SCREEN_WIDTH/2 - state.x, CONSTANTS.SCREEN_HEIGHT/2 - state.y))
    # Remove previous gameObjects
    clear_surface(gameObjects)


def toggle_fullscreen():
    pygame.display.toggle_fullscreen()

def draw_enemies(game_objects, state):
    for enemy in state.enemies:
        enemy.draw(game_objects, state)

def draw_effects(game_objects, state):
    for e in state.effects:
        e.draw(game_objects, state)