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-rw-r--r--src/newgrf_industrytiles.cpp102
1 files changed, 102 insertions, 0 deletions
diff --git a/src/newgrf_industrytiles.cpp b/src/newgrf_industrytiles.cpp
index 77993eafa..f87e4a6d7 100644
--- a/src/newgrf_industrytiles.cpp
+++ b/src/newgrf_industrytiles.cpp
@@ -15,6 +15,7 @@
#include "newgrf_spritegroup.h"
#include "newgrf_callbacks.h"
#include "newgrf_industries.h"
+#include "newgrf_industrytiles.h"
#include "newgrf_text.h"
#include "industry_map.h"
#include "clear_map.h"
@@ -249,3 +250,104 @@ bool PerformIndustryTileSlopeCheck(TileIndex tile, const IndustryTileSpec *its,
default: _error_message = GetGRFStringID(its->grf_prop.grffile->grfid, 0xD000 + callback_res); return false;
}
}
+
+void AnimateNewIndustryTile(TileIndex tile)
+{
+ Industry *ind = GetIndustryByTile(tile);
+ IndustryGfx gfx = GetIndustryGfx(tile);
+ const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
+ byte animation_speed = itspec->animation_speed;
+
+ if (HASBIT(itspec->callback_flags, CBM_INDT_ANIM_SPEED)) {
+ uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIMATION_SPEED, 0, 0, gfx, ind, tile);
+ if (callback_res != CALLBACK_FAILED) animation_speed = clamp(callback_res & 0xFF, 0, 16);
+ }
+
+ /* An animation speed of 2 means the animation frame changes 4 ticks, and
+ * increasing this value by one doubles the wait. 0 is the minimum value
+ * allowed for animation_speed, which corresponds to 30ms, and 16 is the
+ * maximum, corresponding to around 33 minutes. */
+ if ((_tick_counter % (1 << animation_speed)) != 0) return;
+
+ bool frame_set_by_callback = false;
+ byte frame = GetIndustryAnimationState(tile);
+ uint16 num_frames = GB(itspec->animation_info, 0, 8) + 1;
+
+ if (HASBIT(itspec->callback_flags, CBM_INDT_ANIM_NEXT_FRAME)) {
+ uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIM_NEXT_FRAME, HASBIT(itspec->animation_special_flags, 0) ? Random() : 0, 0, gfx, ind, tile);
+
+ if (callback_res != CALLBACK_FAILED) {
+ frame_set_by_callback = true;
+
+ switch (callback_res & 0xFF) {
+ case 0xFF:
+ DeleteAnimatedTile(tile);
+ break;
+ case 0xFE:
+ /* Carry on as normal. */
+ frame_set_by_callback = false;
+ break;
+ default:
+ frame = callback_res & 0xFF;
+ break;
+ }
+ }
+ }
+
+ if (!frame_set_by_callback) {
+ if (frame < num_frames) {
+ frame++;
+ } else if (frame == num_frames && GB(itspec->animation_info, 8, 8) == 1) {
+ /* This animation loops, so start again from the beginning */
+ frame = 0;
+ } else {
+ /* This animation doesn't loop, so stay here */
+ DeleteAnimatedTile(tile);
+ }
+ }
+
+ SetIndustryAnimationState(tile, frame);
+ MarkTileDirtyByTile(tile);
+}
+
+static void ChangeIndustryTileAnimationFrame(TileIndex tile, IndustryAnimationTrigger iat, uint32 random_bits, IndustryGfx gfx, Industry *ind)
+{
+ uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_ANIM_START_STOP, random_bits, iat, gfx, ind, tile);
+ if (callback_res == CALLBACK_FAILED) return;
+
+ switch (callback_res & 0xFF) {
+ case 0xFD: /* Do nothing. */ break;
+ case 0xFE: AddAnimatedTile(tile); break;
+ case 0xFF: DeleteAnimatedTile(tile); break;
+ default:
+ SetIndustryAnimationState(tile, callback_res & 0xFF);
+ AddAnimatedTile(tile);
+ break;
+ }
+}
+
+bool StartStopIndustryTileAnimation(TileIndex tile, IndustryAnimationTrigger iat, uint32 random)
+{
+ IndustryGfx gfx = GetIndustryGfx(tile);
+ const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
+
+ if (!HASBIT(itspec->animation_triggers, iat)) return false;
+
+ Industry *ind = GetIndustryByTile(tile);
+ ChangeIndustryTileAnimationFrame(tile, iat, random, gfx, ind);
+ return true;
+}
+
+bool StartStopIndustryTileAnimation(const Industry *ind, IndustryAnimationTrigger iat)
+{
+ bool ret = true;
+ uint32 random = Random();
+ BEGIN_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
+ if (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == ind->index) {
+ ret &= StartStopIndustryTileAnimation(tile, iat, random);
+ SB(random, 0, 16, Random());
+ }
+ END_TILE_LOOP(tile, ind->width, ind->height, ind->xy)
+
+ return ret;
+}