86 lines
1.7 KiB
Go
86 lines
1.7 KiB
Go
package grid
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import (
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"openquell/components"
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. "openquell/config"
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)
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func (grid *Grid) GetSolidNeighborPosition(
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position *components.Position,
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velocity *components.Velocity,
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solid bool) (bool, *components.Position) {
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if !solid {
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return false, nil
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}
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// set to true if we are already on the last tile in the current
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// direction, i.e. on the edge of the grid
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edge := true
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neighborpos := position.Point()
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switch velocity.Direction {
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case East:
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if neighborpos.X < grid.TilesX {
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neighborpos.X++
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edge = false
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}
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case West:
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if neighborpos.X > 0 {
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neighborpos.X--
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edge = false
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}
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case South:
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if neighborpos.Y < grid.TilesY {
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neighborpos.Y++
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edge = false
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}
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case North:
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if neighborpos.Y > 0 {
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neighborpos.Y--
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edge = false
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}
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}
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newpos := components.NewPosition(neighborpos, grid.Tilesize)
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// slog.Debug("SolidNeighbor?", "player", position.Point(),
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// "neighbor", neighborpos, "edge", edge, "neighbor-solid",
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// grid.Map[neighborpos].Solid, "newpos", newpos.Point())
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if !edge && grid.Map[neighborpos].Solid {
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return true, newpos
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}
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return false, nil
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}
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func (grid *Grid) BumpEdge(
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pos *components.Position,
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velocity *components.Velocity) (bool, *components.Position) {
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x := pos.X + velocity.Data.X
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y := pos.Y + velocity.Data.Y
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if x < 0 || x > grid.Width-grid.Tilesize || y < 0 || y > grid.Height-grid.Tilesize {
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newpos := &components.Position{}
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X := pos.X
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Y := pos.Y
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switch velocity.Direction {
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case East:
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X = 0
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case West:
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X = grid.Width - grid.Tilesize
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case South:
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Y = 0
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case North:
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Y = grid.Height - grid.Tilesize
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}
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newpos.Update(X, Y, grid.Tilesize)
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return true, newpos
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}
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return false, nil
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}
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