Refactor

tools/editor/map/camera.py

@@ -0,0 +1,55 @@
+import math
+import time
+from OpenGL.GL import *
+from OpenGL.GLU import *
+from tools.dusk.defs import TILE_WIDTH, TILE_HEIGHT, TILE_DEPTH, RPG_CAMERA_PIXELS_PER_UNIT, RPG_CAMERA_Z_OFFSET, RPG_CAMERA_FOV
+
+class Camera:
+  def __init__(self, parent):
+    self.parent = parent
+    self.pixelsPerUnit = RPG_CAMERA_PIXELS_PER_UNIT
+    self.yOffset = RPG_CAMERA_Z_OFFSET
+    self.fov = RPG_CAMERA_FOV
+    self.scale = 8.0
+    self.lastTime = time.time()
+    self.lookAtTarget = [0.0, 0.0, 0.0]
+
+  def setup(self, vw, vh, duration=0.1):
+    now = time.time()
+    delta = now - self.lastTime
+    self.lastTime = now
+    # Calculate ease factor for exponential smoothing over 'duration' seconds
+    ease = 1 - math.exp(-delta / duration)
+
+    z = (vh / 2.0) / (
+      (self.pixelsPerUnit * self.scale) * math.tan(math.radians(self.fov / 2.0))
+    )
+    lookAt = [
+      self.parent.map.position[0] * TILE_WIDTH,
+      self.parent.map.position[1] * TILE_HEIGHT,
+      self.parent.map.position[2] * TILE_DEPTH,
+    ]
+    aspectRatio = vw / vh
+
+    # Ease the lookAt target
+    for i in range(3):
+      self.lookAtTarget[i] += (lookAt[i] - self.lookAtTarget[i]) * ease
+
+    # Camera position is now based on the eased lookAtTarget
+    cameraPosition = (
+      self.lookAtTarget[0],
+      self.lookAtTarget[1] + self.yOffset,
+      self.lookAtTarget[2] + z
+    )
+
+    glMatrixMode(GL_PROJECTION)
+    glLoadIdentity()
+    gluPerspective(self.fov, aspectRatio, 0.1, 1000.0)
+    glScalef(1.0, -1.0, 1.0)  # Flip the projection matrix upside down
+    glMatrixMode(GL_MODELVIEW)
+    glLoadIdentity()
+    gluLookAt(
+      cameraPosition[0], cameraPosition[1], cameraPosition[2],
+      self.lookAtTarget[0], self.lookAtTarget[1], self.lookAtTarget[2],
+      0.0, 1.0, 0.0
+    )