pygame

Author: furas

pygame/camera - 2/main.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+
+# date: 2020.01.16
+# 
+
+import pygame
+import random
+
+# --- constants ---
+
+RED = (255, 0, 0)
+GREEN = (0, 255, 0)
+BLUE = (0, 0, 255)
+COLORS = (RED, GREEN, BLUE)
+
+TILE_SIZE = 50
+
+# --- main ---
+
+pygame.init()
+
+# - window -
+screen = pygame.display.set_mode((800,600))
+screen_rect = screen.get_rect()
+
+# - map - (with random rectangles)
+fullmap = pygame.Surface((2000, 1000))
+#for y in range(TILE_SIZE, 1000-TILE_SIZE, TILE_SIZE):
+#    for x in range(TILE_SIZE, 2000-TILE_SIZE, TILE_SIZE):
+for y in range(0, 1000, TILE_SIZE):
+    for x in range(0, 2000, TILE_SIZE):
+        pygame.draw.rect(fullmap, random.choice(COLORS), (x, y, TILE_SIZE, TILE_SIZE))
+fullmap_rect = fullmap.get_rect()
+
+# - icon(s) which not move -
+icon = pygame.Surface((100, 100))
+icon.fill((255,255,255))
+icon_rect = icon.get_rect()
+icon_rect.right = screen_rect.right - 10
+icon_rect.bottom = screen_rect.bottom - 10
+
+# - camera -
+# `camera` is not `Surface` but only `Rect` with value/offset which I uses to cut map
+camera = screen.get_rect()
+             
+# --- loop ---                         
+running = True
+while running:
+    
+    # - events -
+    
+    for event in pygame.event.get():
+        if event.type == pygame.QUIT:
+            running = False
+        if event.type == pygame.KEYDOWN:
+            if event.key == pygame.K_ESCAPE:
+                running = False
+
+    # - updates (without draws) -
+    
+    keys = pygame.key.get_pressed()
+    if keys[pygame.K_LEFT]:
+        camera.x -= 5
+        if camera.left < fullmap_rect.left:
+            camera.left = fullmap_rect.left
+    if keys[pygame.K_RIGHT]:
+        camera.x += 5
+        if camera.right > fullmap_rect.right:
+            camera.right = fullmap_rect.right
+    if keys[pygame.K_UP]:
+        camera.y -= 5
+        if camera.top < fullmap_rect.top:
+            camera.top = fullmap_rect.top
+    if keys[pygame.K_DOWN]:
+        camera.y += 5
+        if camera.bottom > fullmap_rect.bottom:
+            camera.bottom = fullmap_rect.bottom
+
+    # - draws (without updates) -
+    
+    # moving map - using `camera` to copy part of `fullmap` to `screen`
+    screen.blit(fullmap, (0,0), camera)
+    
+    # static icon(s)
+    screen.blit(icon, icon_rect)
+    
+    pygame.display.update()
+    
+# --- end ---    
+pygame.quit()