More core examples (#13)

* Added core_input_keys example * Added core_basic_window example * Added core_input_mouse example * Added core_input_mouse_wheel example * Added Rectangle struct * Added core_input_gestures example to utilize the Rectangle struct * Removed unused imports * Used the right draw function for the example * PEP8 fixes * Added core 2d camera examples * Added core 2d camera examples
2020-09-19 16:02:17 +08:00 · 2020-09-19 16:02:17 +08:00 · 6a3be55fe2
commit 6a3be55fe2
parent 6854ec4a3e
4 changed files with 462 additions and 10 deletions
--- a/examples/core/core_2d_camera.py
+++ b/examples/core/core_2d_camera.py
@ -0,0 +1,137 @@
+"""
+
+raylib [core] example - 2d camera
+
+"""
+from raylib.pyray import PyRay
+from raylib.colors import (
+    RAYWHITE,
+    DARKGRAY,
+    RED,
+    GREEN,
+    SKYBLUE,
+    BLUE,
+    BLACK,
+)
+
+
+pyray = PyRay()
+
+# Initialization
+MAX_BUILDINGS = 100
+SCREEN_WIDTH = 800
+SCREEN_HEIGHT = 450
+
+pyray.init_window(SCREEN_WIDTH, SCREEN_HEIGHT,
+                  'raylib [core] example - 2d camera')
+
+player = pyray.Rectangle(400, 280, 40, 40)
+buildings = []
+build_colors = []
+spacing = 0
+
+for i in range(MAX_BUILDINGS):
+    width = pyray.get_random_value(50, 200)
+    height = pyray.get_random_value(100, 800)
+    y = SCREEN_HEIGHT - 130 - height
+    x = -6000 + spacing
+
+    buildings.append(pyray.Rectangle(x, y, width, height))
+
+    spacing += width
+
+    build_colors.append(pyray.Color(
+        pyray.get_random_value(200, 240),
+        pyray.get_random_value(200, 240),
+        pyray.get_random_value(200, 250),
+        255
+    ))
+
+camera = pyray.Camera2D()
+camera.target = pyray.Vector2(player.x + 20, player.y + 20)
+camera.offset = pyray.Vector2(SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2)
+camera.rotation = 0.0
+camera.zoom = 1.0
+
+pyray.set_target_fps(60)  # Set our game to run at 60 frames-per-second
+
+
+# Main game loop
+while not pyray.window_should_close():  # Detect window close button or ESC key
+    # Update
+
+    # Player movement
+    if pyray.is_key_down(pyray.KEY_RIGHT):
+        player.x += 2
+    elif pyray.is_key_down(pyray.KEY_LEFT):
+        player.x -= 2
+
+    # Camera target follows player
+    camera.target = pyray.Vector2(player.x + 20, player.y + 20)
+
+    # Camera rotation controls
+    if pyray.is_key_down(pyray.KEY_A):
+        camera.rotation -= 1
+    elif pyray.is_key_down(pyray.KEY_S):
+        camera.rotation += 1
+
+    # Limit camera rotation to 80 degrees (-40 to 40)
+    if camera.rotation > 40:
+        camera.rotation = 40
+    elif camera.rotation < -40:
+        camera.rotation = -40
+
+    # Camera zoom controls
+    camera.zoom += pyray.get_mouse_wheel_move() * 0.05
+
+    if camera.zoom > 3.0:
+        camera.zoom = 3.0
+    elif camera.zoom < 0.1:
+        camera.zoom = 0.1
+
+    # Camera reset (zoom and rotation)
+    if pyray.is_key_pressed(pyray.KEY_R):
+        camera.zoom = 1.0
+        camera.rotation = 0.0
+
+    # Draw
+    pyray.begin_drawing()
+    pyray.clear_background(RAYWHITE)
+
+    pyray.begin_mode_2d(camera)
+
+    pyray.draw_rectangle(-6000, 320, 13000, 8000, DARKGRAY)
+
+    for i in range(MAX_BUILDINGS):
+        pyray.draw_rectangle_rec(buildings[i], build_colors[i])
+
+    pyray.draw_rectangle_rec(player, RED)
+
+    x = int(camera.target.x)
+    y = int(camera.target.y)
+    pyray.draw_line(x, -SCREEN_HEIGHT * 10, x, SCREEN_HEIGHT * 10, GREEN)
+    pyray.draw_line(-SCREEN_WIDTH * 10, y, SCREEN_WIDTH * 10, y, GREEN)
+
+    pyray.end_mode_2d()
+
+    pyray.draw_text('SCREEN AREA', 640, 10, 20, RED)
+
+    pyray.draw_rectangle(0, 0, SCREEN_WIDTH, 5, RED)
+    pyray.draw_rectangle(0, 5, 5, SCREEN_HEIGHT - 10, RED)
+    pyray.draw_rectangle(SCREEN_WIDTH - 5, 5, 5, SCREEN_HEIGHT - 10, RED)
+    pyray.draw_rectangle(0, SCREEN_HEIGHT - 5, SCREEN_WIDTH, 5, RED)
+
+    pyray.draw_rectangle(10, 10, 250, 113, pyray.fade(SKYBLUE, 0.5))
+    pyray.draw_rectangle_lines(10, 10, 250, 113, BLUE)
+
+    pyray.draw_text('Free 2d camera controls:', 20, 20, 10, BLACK)
+    pyray.draw_text('- Right/Left to move Offset', 40, 40, 10, DARKGRAY)
+    pyray.draw_text('- Mouse Wheel to Zoom in-out', 40, 60, 10, DARKGRAY)
+    pyray.draw_text('- A / S to Rotate', 40, 80, 10, DARKGRAY)
+    pyray.draw_text('- R to reset Zoom and Rotation', 40, 100, 10, DARKGRAY)
+
+    pyray.end_drawing()
+
+
+# De-Initialization
+pyray.close_window()  # Close window and OpenGL context