44 lines
766 B
Go
44 lines
766 B
Go
package mainwindow
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type GameCamera struct {
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X int
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Y int
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Width int
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Height int
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}
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func (c *GameCamera) MoveCamera(targetX int, targetY int, mapWidth int, mapHeight int) {
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// Update the camera coordinates to the target coordinates
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x := targetX - c.Width/2
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y := targetY - c.Height/2
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if x < 0 {
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x = 0
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}
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if y < 0 {
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y = 0
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}
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if x > mapWidth - c.Width {
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x = mapWidth - c.Width
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}
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if y > mapHeight - c.Height {
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y = mapHeight - c.Height
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}
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c.X, c.Y = x, y
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}
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func (c *GameCamera) ToCameraCoordinates(mapX int, mapY int) (cameraX int, cameraY int) {
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// Convert coordinates on the gamemap, to coordinates on the viewport
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x, y := mapX-c.X, mapY-c.Y
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if x < 0 || y < 0 || x >= c.Width || y >= c.Height {
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return -1, -1
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}
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return x, y
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}
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