Merge pull request #1 from BreizhHardware/dev_clement

Basics of pygame : Movement and gravity

pygame_basics.py

@@ -0,0 +1,111 @@
+import pygame
+from pygame.locals import *
+import sys
+
+pygame.init()
+
+vec = pygame.math.Vector2
+HEIGHT = 450
+WIDTH = 400
+ACC = 0.5
+FRIC = -0.12
+FPS = 60
+FramePerSec = pygame.time.Clock()
+
+displaysurface = pygame.display.set_mode((0, 0), pygame.FULLSCREEN)
+WIDTH, HEIGHT = displaysurface.get_size()
+pygame.display.set_caption("Game")
+
+
+class Player(pygame.sprite.Sprite):
+    def __init__(self):
+        super().__init__()
+        self.surf = pygame.Surface((30, 30))
+        self.surf.fill((128, 255, 40))
+        self.rect = self.surf.get_rect()
+
+        self.pos = vec((10, 385))
+        self.vel = vec(0, 0)
+        self.acc = vec(0, 0)
+        self.jumping = False  # Track if the player is in the air
+
+    def dash(self, acc):
+        self.acc.x = 5*acc
+
+    def move(self):
+        self.acc = vec(0, 1)  # Gravity
+
+        pressed_keys = pygame.key.get_pressed()
+        if pressed_keys[K_q]:
+            self.acc.x = -ACC
+            if pressed_keys[K_a]:
+                self.dash(-ACC)
+        if pressed_keys[K_d]:
+            self.acc.x = ACC
+            if pressed_keys[K_a]:
+                self.dash(ACC)
+
+        # Jumping logic: only jump if not already in the air
+        if pressed_keys[K_SPACE] and not self.jumping:
+            self.vel.y = -30  # Jump force
+            self.jumping = True  # Prevent mid-air jumping
+
+
+            self.vel.x = -ACC
+        # Apply friction
+        self.acc.y += self.vel.y * FRIC
+        self.acc.x += self.vel.x * FRIC
+        self.vel += self.acc
+        self.pos += self.vel + 0.5 * self.acc
+
+        # Prevent the player from moving off-screen horizontally
+        if self.pos.x > WIDTH - self.rect.width / 2:
+            self.pos.x = WIDTH - self.rect.width / 2
+            self.vel.x = 0  # Stop movement
+        if self.pos.x < self.rect.width / 2:
+            self.pos.x = self.rect.width / 2
+            self.vel.x = 0  # Stop movement
+
+        self.rect.midbottom = self.pos
+
+    def update(self):
+        hits = pygame.sprite.spritecollide(self, platforms, False)
+        if hits:
+            if self.vel.y > 0:  # Only reset jumping if falling onto a platform
+                self.pos.y = hits[0].rect.top
+                self.vel.y = 0
+                self.jumping = False  # Reset jumping state
+
+
+
+class platform(pygame.sprite.Sprite):
+    def __init__(self):
+        super().__init__()
+        self.surf = pygame.Surface((WIDTH, 20))
+        self.surf.fill((255, 0, 0))
+        self.rect = self.surf.get_rect(center=(WIDTH / 2, HEIGHT - 10))
+
+
+PT1 = platform()
+P1 = Player()
+platforms = pygame.sprite.Group()
+platforms.add(PT1)
+all_sprites = pygame.sprite.Group()
+all_sprites.add(PT1)
+all_sprites.add(P1)
+
+while True:
+    for event in pygame.event.get():
+        if event.type == QUIT:
+            pygame.quit()
+            sys.exit()
+
+    displaysurface.fill((0, 0, 0))
+
+    P1.move()
+    P1.update()
+    for entity in all_sprites:
+        displaysurface.blit(entity.surf, entity.rect)
+
+    pygame.display.update()
+    FramePerSec.tick(FPS)