63 lines
1.7 KiB
Lua
63 lines
1.7 KiB
Lua
local tf = love.math.newTransform()
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local tfTerritory = love.math.newTransform()
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local tfNodes = love.math.newTransform()
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local lg = assert( love.graphics )
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local Camera = {
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x = 0, y = 0,
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w = 360, h = 200,
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zoom = 1, tf = tf,
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tfTerritory = tfTerritory, tfNodes = tfNodes }
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function Camera.GetWorldCoordinate( x, y )
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return tf:inverseTransformPoint( x, y )
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end
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function Camera.GetBitmapCoordinate( x, y )
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return tfTerritory:inverseTransformPoint( x, y )
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end
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function Camera.GetNodeCoordinate( x, y )
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return tfNodes:inverseTransformPoint( x, y )
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end
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function Camera.Zoom( out )
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local scale = out and 1.1 or 0.9
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tf:scale( scale, scale )
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local x = Camera.x
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local y = Camera.y
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return Camera.Set( x, y, Camera.w * scale, Camera.h * scale )
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end
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function Camera.Translate( x, y )
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x = x or 0
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y = y or 0
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return Camera.Set( math.max(-180, math.min(360, Camera.x + x)), math.min(100, Camera.y + y), Camera.w, Camera.h)
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end
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--In world coordinates: top left corner at x, y, extent of w, h.
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function Camera.Set( x, y, w, h )
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print( ("CAMERA: %3.2f %3.2f %3.2f %3.2f"):format(x, y, w, h) )
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Camera.x, Camera.y, Camera.w, Camera.h = x, y, w, h
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Camera.zoom = w / 360
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tf:reset()
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tf:scale( w / 360, -h / 200 )
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tf:translate( 180 - x, -y - 100 )
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tfTerritory:reset()
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tfTerritory:scale( w / 512, h / 285 )
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tfTerritory:translate( -x * 512 / 360, y * 512 / 360 )
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tfNodes:reset()
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tfNodes:scale( w / 360, h / 200 )
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tfNodes:translate( 180 - x , y + 100 )
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--tfNodes:translate( -x * 800 / 360, y * 400 / 200 )
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end
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function Camera.Resize( w, h )
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w, h = math.min( w, h * 360 / 200 ), math.min( h, w * 200 / 360 )
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return Camera.Set( Camera.x, Camera.y, w, h )
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end
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Camera.Resize( lg.getDimensions() )
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return Camera |