Kayne Ruse
48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
/* Copyright: (c) Kayne Ruse 2013
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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*/
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#include "sprite_sheet.hpp"
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SpriteSheet::SpriteSheet(SDL_Surface* s, Uint16 w, Uint16 h)
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: Image(s, {0, 0, w, h})
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{
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currentFrame = 0; maxFrames = GetSurface()->w / GetClipW();
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currentStrip = 0; maxStrips = GetSurface()->h / GetClipH();
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interval = ticks = 0;
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}
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void SpriteSheet::Update(int delta) {
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if (interval && (ticks += delta) > interval) {
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if (++currentFrame >= maxFrames) {
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currentFrame = 0;
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}
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ticks = 0;
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}
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SetClipX(currentFrame * GetClipW());
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SetClipY(currentStrip * GetClipH());
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}
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void SpriteSheet::SetSurface(SDL_Surface* s, Uint16 w, Uint16 h) {
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Image::SetSurface(s, {0, 0, w, h});
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currentFrame = 0; maxFrames = GetSurface()->w / GetClipW();
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currentStrip = 0; maxStrips = GetSurface()->h / GetClipH();
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interval = ticks = 0;
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} |