diff options
Diffstat (limited to 'jeu-test/Lemmini/0.84/src/Game/Stencil.java')
| -rw-r--r-- | jeu-test/Lemmini/0.84/src/Game/Stencil.java | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/jeu-test/Lemmini/0.84/src/Game/Stencil.java b/jeu-test/Lemmini/0.84/src/Game/Stencil.java new file mode 100644 index 0000000..3035efa --- /dev/null +++ b/jeu-test/Lemmini/0.84/src/Game/Stencil.java @@ -0,0 +1,248 @@ +package Game;
+
+/*
+ * Copyright 2009 Volker Oth
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Defines the stencil which defines the properties of each pixel of the level.
+ * @author Volker Oth
+ */
+public class Stencil {
+ /* Each pixel is represented by a 32bit value in the stencil.
+ * The lower part is used for a bitmask that contains stencil properties.
+ * The higher part (val << ID_SHIFT_VAL) can contain an identifier for
+ * a special trap, exit etc.
+ * Note: the lowe part is a bitmask, mainly to save space, but also
+ * since some combinations of properties are possible.
+ * Yet of course not all combinations are possible or make sense.
+ */
+ /** empty space - background is visible */
+ public final static int MSK_EMPTY = 0;
+ /** brick - can be destroyed, Lemmings can walk on it */
+ public final static int MSK_BRICK = 1;
+ /** steel - can't be destroyed, Lemmings can walk on it */
+ public final static int MSK_STEEL = 2;
+ /** Lemmings can either walk on steel or on brick */
+ public final static int MSK_WALK_ON = MSK_BRICK|MSK_STEEL;
+ /** stair build by a builder - note that this is just an additional attribute - brick is also needed to walk on it */
+ public final static int MSK_STAIR = 4;
+ /** right side of stopper mask - reflects to the right */
+ public final static int MSK_STOPPER_RIGHT = 8;
+ /** left side of stopper mask - reflects to the left */
+ public final static int MSK_STOPPER_LEFT = 16;
+ /** stopper mask (either left or right) */
+ public final static int MSK_STOPPER = MSK_STOPPER_RIGHT|MSK_STOPPER_LEFT;
+ /** arrow to the right - no digging to the left */
+ public final static int MSK_NO_DIG_LEFT = 32;
+ /** arrow to the left - no digging to the right */
+ public final static int MSK_NO_DIG_RIGHT = 64;
+ /** no digging - either left or right */
+ public final static int MSK_NO_DIG = MSK_NO_DIG_LEFT|MSK_NO_DIG_RIGHT;
+
+ /** mask used to erase stencil properties when a pixel is erased */
+ public final static int MSK_ERASE = ~(Stencil.MSK_WALK_ON|Stencil.MSK_STAIR|Stencil.MSK_NO_DIG);
+
+ /** a trap triggering the drowning animation - i.e. water */
+ public final static int MSK_TRAP_DROWN = 128;
+ /** a trap that replaces the Lemming with a special death animation */
+ public final static int MSK_TRAP_REPLACE = 256;
+ /** a trap that triggers the normal death animation */
+ public final static int MSK_TRAP_DIE = 512;
+ /** a trap (either DROWN, REPLACE or DIE) */
+ public final static int MSK_TRAP = MSK_TRAP_DROWN|MSK_TRAP_REPLACE|MSK_TRAP_DIE;
+ /** the level exit */
+ public final static int MSK_EXIT = 1024;
+
+ /** number of bits the identifier is shifter up (below is the bitmask part) */
+ private final static int ID_SHIFT_VAL = 16;
+
+ /** array which represents the stencil buffer */
+ private int stencil[];
+ /** width of stencil (=width of level) */
+ private int width;
+ /** height of stencil (=height of level) */
+ private int height;
+
+
+ /**
+ * Constructor.
+ * @param w width in pixels
+ * @param h height in pixels
+ */
+ public Stencil(final int w, final int h) {
+ width = w;
+ height = h;
+ stencil = new int[width * height];
+ }
+
+ /**
+ * Clear stencil (fill with MSK_EMPTY).
+ */
+ public void clear() {
+ int size = width*height;
+ for (int idx=0; idx<size; idx++)
+ stencil[idx] = MSK_EMPTY;
+ }
+
+ /**
+ * Set given value at given position.
+ * @param x x position in pixels
+ * @param y y position in pixels
+ * @param val stencil value
+ */
+ public void set(final int x, final int y, final int val) {
+ stencil[x+y*width] = val;
+ }
+
+ /**
+ * Set given value at given position.
+ * @param pos position (x*width+y)
+ * @param val stencil value
+ */
+ public void set(final int pos, final int val) {
+ stencil[pos] = val;
+ }
+
+ /**
+ * Get stencil value at given position.
+ * @param x x position in pixels
+ * @param y y position in pixels
+ * @return stencil value
+ */
+ public int get(final int x, final int y) {
+ return stencil[x+y*width];
+ }
+
+ /**
+ * Get stencil value at given position.
+ * @param pos position (x*width+y)
+ * @return stencil value
+ */
+ public int get(final int pos) {
+ return stencil[pos];
+ }
+
+ /**
+ * AND given value with existing value at given position.
+ * @param x x position in pixels
+ * @param y y position in pixels
+ * @param val stencil value
+ */
+ public void and(final int x, final int y, final int val) {
+ int pos = x+y*width;
+ stencil[pos] = (stencil[pos] & val);
+ }
+
+ /**
+ * AND given value with existing value at given position.
+ * @param pos position (x*width+y)
+ * @param val stencil value
+ */
+ public void and(final int pos, final int val) {
+ stencil[pos] = (stencil[pos] & val);
+ }
+
+ /**
+ * OR given value with existing value at given position.
+ * @param x x position in pixels
+ * @param y y position in pixels
+ * @param val stencil value
+ */
+ public void or(final int x, final int y, final int val) {
+ int pos = x+y*width;
+ stencil[pos] = (stencil[pos] | val);
+ }
+
+ /**
+ * OR given value with existing value at given position.
+ * @param pos position (x*width+y)
+ * @param val stencil value
+ */
+ public void or(final int pos, final int val) {
+ stencil[pos] = (stencil[pos] | val);
+ }
+
+ /**
+ * Set only the ID without changing the lower bitmask part.
+ * @param x x position in pixels
+ * @param y y position in pixels
+ * @param id identifier (must not exceed 16bit)
+ */
+ public void setID(final int x, final int y, final int id) {
+ stencil[x+y*width] |= (id << ID_SHIFT_VAL);
+ }
+
+ /**
+ * Set only the ID without changing the lower bitmask part.
+ * @param pos position (x*width+y)
+ * @param id identifier (must not exceed 16bit)
+ */
+ public void setID(final int pos, final int id) {
+ stencil[pos] |= (id << ID_SHIFT_VAL);
+ }
+
+ /**
+ * Get the identifier from the stencil.
+ * @param x x position in pixels
+ * @param y y position in pixels
+ * @return identifier
+ */
+ public int getID(final int x, final int y) {
+ return (stencil[x+y*width] >> ID_SHIFT_VAL);
+ }
+
+ /**
+ * Get the identifier from the stencil.
+ * @param pos position (x*width+y)
+ * @return identifier
+ */
+ public int getID(final int pos) {
+ return (stencil[pos] >> ID_SHIFT_VAL);
+ }
+
+ /**
+ * Get identifier (upper part) from full stencil value.
+ * @param sval stencil value
+ * @return identifier
+ */
+ public static int getObjectID(final int sval) {
+ return sval >> ID_SHIFT_VAL;
+ }
+
+ /**
+ * Create the numerical value used in the stencil from the identifier.
+ * @param id identifier
+ * @return numerical value of the identifier as used in the stencil
+ */
+ static int createObjectID(final int id) {
+ return id << ID_SHIFT_VAL;
+ }
+
+ /** Get width of stencil.
+ * @return width of stencil
+ */
+ public int getWidth() {
+ return width;
+ }
+
+ /**
+ * Get height of stencil.
+ * @return height of stencil
+ */
+ public int getHeight() {
+ return height;
+ }
+}
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