Differences

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--- pygame_terminal [2023/09/20 02:09] – appledog
+++ pygame_terminal [2023/11/06 00:23] (current) – appledog
@@ Line 14: / Line 14: @@
 Additionally a small logo can be used, but if you comment out the logo line it still works.
+== Simpifying the code
+The code can be simplified by removing all references to logos and captions, and removing the boilerplate key code for up and down arrows, etc.
+== Code Commentary
+The most overlooked part of such a system is the font metrics. Often it is required to determine only only the width and height but also determine if there is a baseline or an offset for the characters. It is important to know that there is not always an easy way to do this on a font by font basis and sometimes you must use a manual adjustment. In the base code shown here there is a -2 adjustment to font height in setFont(). This may be adjusted to taste by the programmer based on the font and the situation.
+Pro tip, you may also wish to blit the text 1 to 5 pixels to the right and down so that it does not touch the window borders.
 == Character Set and Logo
@@ Line 44: / Line 52: @@
 == game.py
 <Code:Python>
+import pygame
+import time
+class Game:
+    def __init__(self, window):
+        self.window = window
+        self.screen = window.screen
+        self.logo = window.logo
+        self.font = window.font
+        # Clear the screen.
+        self.screen.fill((0, 0, 0))
+        # Set up game variables
+        self.running = True
+    def start(self):
+        # Main loop
+        while self.running == True:
+            self.checkEvents()
+            self.screen.fill((0, 0, 0))  # Clear the screen.
+            self.drawGame()
+            pygame.display.flip()  # update the display.
+            time.sleep(1 / 60)  # Sleep for 1/FPS, or about 60 fps.
+    def drawGame(self):
+        self.drawText(0, 2, "it works!", "gray")
+    def checkEvents(self):
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                self.running = False
+                return
+            if event.type == pygame.KEYDOWN:
+                # key down event, process keys.
+                if event.key == pygame.K_LEFT:
+                    pass
+                elif event.key == pygame.K_RIGHT:
+                    pass
+                elif event.key == pygame.K_UP:
+                    pass
+                elif event.key == pygame.K_DOWN:
+                    pass
+                else:
+                    pass
+    def drawText(self, at_x, at_y, text, color):
+        text_surface = self.font.render(text, False, color)
+        x = self.window.fontwidth * at_x
+        y = self.window.fontheight * at_y
+        self.screen.blit(text_surface, (x + 2, y))
 </Code>
 == window.py
 <Code:Python>
+import pygame
+class Window:
+    def __init__(self):
+        pygame.init()
+    def setLogo(self, filename):
+        self.logo = pygame.image.load(filename)
+        pygame.display.set_icon(self.logo)
+        return self.logo
+    def setCaption(self, cap):
+        pygame.display.set_caption(cap)
+    def setSize(self, width, height):
+        self.width = width
+        self.height = height
+        self.size = (width, height)
+        self.screen = pygame.display.set_mode(self.size)
+        return self.screen
+    def setFont(self, filename, size):
+        pygame.font.init()
+        self.font = pygame.font.Font(filename, size)
+        font_width, font_height = self.font.size("@")
+        self.fontwidth = font_width
+        self.fontheight = size - 2
+        return self.font
 </Code>
+== Next
+You may wish to continue on to [[Pygame Terminal II]] for a more advanced version of this.